TY  - CONF
AU  - Petrović, Jana
AU  - Radovanović, Željko
AU  - Lazarević, Slavica
AU  - Janaćković, Đorđe
AU  - Petrović, Rada
AU  - Gasik, Michael
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7486
AB  - A great deal of interest is directed towards g-C3N4 (CN) for the photocatalytic reduction of Cr(VI), due to its high stability in acidic conditions and medium band gap (~2,7 eV), but its practical application is limited because of the high recombination rate of electrons and holes. Sulfuric acid treatment is considered as one of the methods for optimizing properties of CN by certain surface and possibly structure modifications which would lead to an increased specific surface area (Sp) and more active sites, anchoring electronegative groups to enhance charge separation, exfoliated bulk CN into the nanosheets, etc. The aim of this research was to investigate the influence of H2SO4 concentration and other experimental conditions (temperature and time) on physicochemical properties and photocatalytic efficiency of CN.
PB  - Savez hemijskih inženjera Srbije
C3  - Hemijska industrija - Supplementary Issue - ExcellMater Conference 2024 Abstracts
T1  - The effect of sulfuric acid treatment on physicochemical properties of g-C3N4 and its efficiency for photocatalytic reduction of Cr(VI)
IS  - 1S
SP  - 71
VL  - 78
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7486
ER  - 

@conference{
author = "Petrović, Jana and Radovanović, Željko and Lazarević, Slavica and Janaćković, Đorđe and Petrović, Rada and Gasik, Michael",
year = "2024",
abstract = "A great deal of interest is directed towards g-C3N4 (CN) for the photocatalytic reduction of Cr(VI), due to its high stability in acidic conditions and medium band gap (~2,7 eV), but its practical application is limited because of the high recombination rate of electrons and holes. Sulfuric acid treatment is considered as one of the methods for optimizing properties of CN by certain surface and possibly structure modifications which would lead to an increased specific surface area (Sp) and more active sites, anchoring electronegative groups to enhance charge separation, exfoliated bulk CN into the nanosheets, etc. The aim of this research was to investigate the influence of H2SO4 concentration and other experimental conditions (temperature and time) on physicochemical properties and photocatalytic efficiency of CN.",
publisher = "Savez hemijskih inženjera Srbije",
journal = "Hemijska industrija - Supplementary Issue - ExcellMater Conference 2024 Abstracts",
title = "The effect of sulfuric acid treatment on physicochemical properties of g-C3N4 and its efficiency for photocatalytic reduction of Cr(VI)",
number = "1S",
pages = "71",
volume = "78",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7486"
}

Petrović, J., Radovanović, Ž., Lazarević, S., Janaćković, Đ., Petrović, R.,& Gasik, M.. (2024). The effect of sulfuric acid treatment on physicochemical properties of g-C3N4 and its efficiency for photocatalytic reduction of Cr(VI). in Hemijska industrija - Supplementary Issue - ExcellMater Conference 2024 Abstracts
Savez hemijskih inženjera Srbije., 78(1S), 71.
https://hdl.handle.net/21.15107/rcub_technorep_7486

Petrović J, Radovanović Ž, Lazarević S, Janaćković Đ, Petrović R, Gasik M. The effect of sulfuric acid treatment on physicochemical properties of g-C3N4 and its efficiency for photocatalytic reduction of Cr(VI). in Hemijska industrija - Supplementary Issue - ExcellMater Conference 2024 Abstracts. 2024;78(1S):71.
https://hdl.handle.net/21.15107/rcub_technorep_7486 .

Petrović, Jana, Radovanović, Željko, Lazarević, Slavica, Janaćković, Đorđe, Petrović, Rada, Gasik, Michael, "The effect of sulfuric acid treatment on physicochemical properties of g-C3N4 and its efficiency for photocatalytic reduction of Cr(VI)" in Hemijska industrija - Supplementary Issue - ExcellMater Conference 2024 Abstracts, 78, no. 1S (2024):71,
https://hdl.handle.net/21.15107/rcub_technorep_7486 .

TY  - JOUR
AU  - Lazarević, Slavica S.
AU  - Mihajlović-Kostić, Marija T.
AU  - Janković-Častvan, Ivona M.
AU  - Janaćković, Đorđe T.
AU  - Petrović, Rada D.
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7434
AB  - The surfaces of natural (NZ) and zeolite/iron oxyhydroxide composite (ZFe) samples were analysed by means of inverse gas chromatography (IGC) using the adsorption data of organic non-polar and polar probes, in the infinite and finite-dilution regimes, in the temperature range 483-513 K. The dispersive components of the free energy of adsorption, γS, determined by the Gray method, decreased with increasing temperature for both zeolites. The specific interactions were characterised by the specific free adsorption energy change, ΔGaS, the specific enthalpy change of adsorption, ΔHaS, as well as the donor and acceptor interaction parameters (KA, KD) and the basic character of the NZ and ZFe was evidenced. The adsorption isotherms of n-hexane, benzene, chloroform and tetrahydrofuran (THF) were determined under finite surface coverage and used to estimate the specific surface area and the adsorption energy distribution. The adsorption capacity of the ZFe was higher than for NZ for all the investigated adsorbates. The specific surface areas and pore size distributions were also determined using nitrogen adsorption-desorption isotherms, i.e., the BET method. It was observed that the nature of the adsorbate and the properties of the solid surface of the initial and modified samples governed the uptake of adsorbates.
AB  - Применом инверзне гасне хроматографије, испитана су површинска својства природног зеолита (NZ) и композита зеолита и гвожђе-оксихидроксида (ZFe), коришћењем поларних и неполарних проба у условима нулте и коначне прекривености у температурном опсегу 483–513 K. Вредности дисперзивне компоненте слободне енергије адсорпције, γS, одређене методом Греја, опадају са порастом температуре за оба зеолита. Одређивањем промене специфичне слободне енергије адсорпције, ΔGa S, и промене специфичне енталпије адсорпције, ΔHa S, које одговарају кисело/базним интеракцијама на чврстој површини, одређени су и акцепторски и донорски параметри (KА и KD) на основу којих је утврђено да су површине узорака NZ и ZFe базног карактера. На основу добијених адсорпционих изотерми за n-хексан, бензен, хлороформ и тетрахидрофуран, применом инверзне гасне хроматографије у условима коначне прекривености, израчунате су вредности специфичне површине као и расподела адсорпционе енергије. Капацитет адсорпције узорка ZFe је био већи у односу на капацитета узорка NZ, за све испитане адсорбенте. Специфична површина узорака као и расподела величине мезопора одређени су применом адсорпионе/десорпционе изотерме за гасовити азот, односно применом BET методе. Закључено је да су природа адсорбата и површинска својства адсорбената главни фактори који одређују капацитет адсорпције.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - An inverse gas chromatography study of the adsorption of organics on zeolite and zeolite/iron oxyhydroxide composite at the infinite and finite surface coverage
T1  - Примена инверзне гасне хроматографије при нултој и коначној прекривености за испитивање адсорпције органских мoлекула на зеолиту и композиту зеолита и гвожђе-оксихидроксида
EP  - 397
IS  - 3
SP  - 383
VL  - 89
DO  - 10.2298/JSC230908093L
ER  - 

@article{
author = "Lazarević, Slavica S. and Mihajlović-Kostić, Marija T. and Janković-Častvan, Ivona M. and Janaćković, Đorđe T. and Petrović, Rada D.",
year = "2024",
abstract = "The surfaces of natural (NZ) and zeolite/iron oxyhydroxide composite (ZFe) samples were analysed by means of inverse gas chromatography (IGC) using the adsorption data of organic non-polar and polar probes, in the infinite and finite-dilution regimes, in the temperature range 483-513 K. The dispersive components of the free energy of adsorption, γS, determined by the Gray method, decreased with increasing temperature for both zeolites. The specific interactions were characterised by the specific free adsorption energy change, ΔGaS, the specific enthalpy change of adsorption, ΔHaS, as well as the donor and acceptor interaction parameters (KA, KD) and the basic character of the NZ and ZFe was evidenced. The adsorption isotherms of n-hexane, benzene, chloroform and tetrahydrofuran (THF) were determined under finite surface coverage and used to estimate the specific surface area and the adsorption energy distribution. The adsorption capacity of the ZFe was higher than for NZ for all the investigated adsorbates. The specific surface areas and pore size distributions were also determined using nitrogen adsorption-desorption isotherms, i.e., the BET method. It was observed that the nature of the adsorbate and the properties of the solid surface of the initial and modified samples governed the uptake of adsorbates., Применом инверзне гасне хроматографије, испитана су површинска својства природног зеолита (NZ) и композита зеолита и гвожђе-оксихидроксида (ZFe), коришћењем поларних и неполарних проба у условима нулте и коначне прекривености у температурном опсегу 483–513 K. Вредности дисперзивне компоненте слободне енергије адсорпције, γS, одређене методом Греја, опадају са порастом температуре за оба зеолита. Одређивањем промене специфичне слободне енергије адсорпције, ΔGa S, и промене специфичне енталпије адсорпције, ΔHa S, које одговарају кисело/базним интеракцијама на чврстој површини, одређени су и акцепторски и донорски параметри (KА и KD) на основу којих је утврђено да су површине узорака NZ и ZFe базног карактера. На основу добијених адсорпционих изотерми за n-хексан, бензен, хлороформ и тетрахидрофуран, применом инверзне гасне хроматографије у условима коначне прекривености, израчунате су вредности специфичне површине као и расподела адсорпционе енергије. Капацитет адсорпције узорка ZFe је био већи у односу на капацитета узорка NZ, за све испитане адсорбенте. Специфична површина узорака као и расподела величине мезопора одређени су применом адсорпионе/десорпционе изотерме за гасовити азот, односно применом BET методе. Закључено је да су природа адсорбата и површинска својства адсорбената главни фактори који одређују капацитет адсорпције.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "An inverse gas chromatography study of the adsorption of organics on zeolite and zeolite/iron oxyhydroxide composite at the infinite and finite surface coverage, Примена инверзне гасне хроматографије при нултој и коначној прекривености за испитивање адсорпције органских мoлекула на зеолиту и композиту зеолита и гвожђе-оксихидроксида",
pages = "397-383",
number = "3",
volume = "89",
doi = "10.2298/JSC230908093L"
}

Lazarević, S. S., Mihajlović-Kostić, M. T., Janković-Častvan, I. M., Janaćković, Đ. T.,& Petrović, R. D.. (2024). An inverse gas chromatography study of the adsorption of organics on zeolite and zeolite/iron oxyhydroxide composite at the infinite and finite surface coverage. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 89(3), 383-397.
https://doi.org/10.2298/JSC230908093L

Lazarević SS, Mihajlović-Kostić MT, Janković-Častvan IM, Janaćković ĐT, Petrović RD. An inverse gas chromatography study of the adsorption of organics on zeolite and zeolite/iron oxyhydroxide composite at the infinite and finite surface coverage. in Journal of the Serbian Chemical Society. 2024;89(3):383-397.
doi:10.2298/JSC230908093L .

Lazarević, Slavica S., Mihajlović-Kostić, Marija T., Janković-Častvan, Ivona M., Janaćković, Đorđe T., Petrović, Rada D., "An inverse gas chromatography study of the adsorption of organics on zeolite and zeolite/iron oxyhydroxide composite at the infinite and finite surface coverage" in Journal of the Serbian Chemical Society, 89, no. 3 (2024):383-397,
https://doi.org/10.2298/JSC230908093L . .

TY  - CONF
AU  - Veljović, Đorđe
AU  - Janaćković, Đorđe
AU  - Petrović, Rada
AU  - Radovanović, Željko
AU  - Ugrinović, Vukašin
AU  - Matić, Tamara
AU  - Milivojević, Marija
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7439
AB  - Bioactive  materials  for  the repairand  regeneration  of human bone  tissue,  as  well  as  for  the restoration  of  teeth,  are  the focus of  numerous  studies  in  the  field  of  biomaterials.Orthopaedic  surgeons  anticipate that  bioactive materialshave  the  potential  to  facilitate  the  formation  of  new  apatite-like  crystals  upon  contact  with body fluids, promoting the development of new bone tissue under in vivoconditions. On the other hand, dentists expect that bioactive  materials  have  the  potential  for  remineralization  of  partially  demineralized  enamel  and  dentin. In  the preceding years, the Bioceramic Materials Group, founded within the Department of Inorganic Chemical Technology at the  Faculty  of  Technology  and  Metallurgy,  University  of  Belgrade (FTM-UB),  conducted  extensive  research  on  the advancement of bioactive and biocompatible materials with adequate mechanical properties, designed for applicationin dentistry, orthopaedics, maxillofacial surgery, and also bone tissue engineering(BTE).
PB  - Savez hemijskih inženjera Srbije
C3  - Hemijska industrija - Supplementary Issue - ExcellMater Conference 2024 Abstracts
T1  - The current trend in innovative bioactive materials for dental and orthopedic applications
IS  - 1S
SP  - 37
VL  - 78
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7439
ER  - 

@conference{
author = "Veljović, Đorđe and Janaćković, Đorđe and Petrović, Rada and Radovanović, Željko and Ugrinović, Vukašin and Matić, Tamara and Milivojević, Marija",
year = "2024",
abstract = "Bioactive  materials  for  the repairand  regeneration  of human bone  tissue,  as  well  as  for  the restoration  of  teeth,  are  the focus of  numerous  studies  in  the  field  of  biomaterials.Orthopaedic  surgeons  anticipate that  bioactive materialshave  the  potential  to  facilitate  the  formation  of  new  apatite-like  crystals  upon  contact  with body fluids, promoting the development of new bone tissue under in vivoconditions. On the other hand, dentists expect that bioactive  materials  have  the  potential  for  remineralization  of  partially  demineralized  enamel  and  dentin. In  the preceding years, the Bioceramic Materials Group, founded within the Department of Inorganic Chemical Technology at the  Faculty  of  Technology  and  Metallurgy,  University  of  Belgrade (FTM-UB),  conducted  extensive  research  on  the advancement of bioactive and biocompatible materials with adequate mechanical properties, designed for applicationin dentistry, orthopaedics, maxillofacial surgery, and also bone tissue engineering(BTE).",
publisher = "Savez hemijskih inženjera Srbije",
journal = "Hemijska industrija - Supplementary Issue - ExcellMater Conference 2024 Abstracts",
title = "The current trend in innovative bioactive materials for dental and orthopedic applications",
number = "1S",
pages = "37",
volume = "78",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7439"
}

Veljović, Đ., Janaćković, Đ., Petrović, R., Radovanović, Ž., Ugrinović, V., Matić, T.,& Milivojević, M.. (2024). The current trend in innovative bioactive materials for dental and orthopedic applications. in Hemijska industrija - Supplementary Issue - ExcellMater Conference 2024 Abstracts
Savez hemijskih inženjera Srbije., 78(1S), 37.
https://hdl.handle.net/21.15107/rcub_technorep_7439

Veljović Đ, Janaćković Đ, Petrović R, Radovanović Ž, Ugrinović V, Matić T, Milivojević M. The current trend in innovative bioactive materials for dental and orthopedic applications. in Hemijska industrija - Supplementary Issue - ExcellMater Conference 2024 Abstracts. 2024;78(1S):37.
https://hdl.handle.net/21.15107/rcub_technorep_7439 .

Veljović, Đorđe, Janaćković, Đorđe, Petrović, Rada, Radovanović, Željko, Ugrinović, Vukašin, Matić, Tamara, Milivojević, Marija, "The current trend in innovative bioactive materials for dental and orthopedic applications" in Hemijska industrija - Supplementary Issue - ExcellMater Conference 2024 Abstracts, 78, no. 1S (2024):37,
https://hdl.handle.net/21.15107/rcub_technorep_7439 .

TY  - JOUR
AU  - Barać, Nemanja
AU  - Dimić‑Mišić, Katarina
AU  - Stijepović, Mirko
AU  - Kijevčanin, Mirjana
AU  - Imani, Monireh
AU  - Uskoković, Petar
AU  - Janaćković, Đorđe
AU  - Barceló, Ernesto
AU  - Gane, Patrick
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7364
AB  - Of major interest, especially in city environments, and increasingly inside vehicles or industrial plants, is the drive to reduce human exposure to nitrogen oxides (NOx). This trend has drawn increasing attention to filtration, which has developed remarkably owing to the capabilities of recently developed mathematical models and novel filter concepts. This paper reports on the study of the kinetic modelling of adsorption of nitrogen dioxide (NO2), collected from the tailpipe of a diesel engine, reacting to calcium nitrate salt (Ca(NO3)2) on a surface flow filter consisting of a coating of fine ground limestone or marble (CaCO3) in combination with micro-nanofibrillated cellulose (MNFC) acting as binder and humectant applied onto a multiply recycled newsprint substrate. The coating and substrate are both porous, but on different pore size scales, with the coating having significantly lower permeability. To maximise gas-coating contact, therefore, the coating deposition is pixelated, achieved by pin coating. An axially dispersed gaseous plug flow model (dispersion model) was used to simulate the transport within the coating pore network structure, following earlier flow modelling studies, and a kinetic reaction model was used to examine NO2 to NO3− conversion in correlation with experimental results. Modelling results indicate a 60.38% conversion of exposed NO2 gas to Ca(NO3)2 under the specific conditions applied, with an absolute relative error between the predicted and experimentally estimated value being 0.81%. The model additionally enabled a prediction of effects of changing parameters over a limited perturbation range, thus assisting in predicting filter element consumption, with attention given to the active component CaCO3 surface as a function of particle size in relation to the gas contact exchange, promoting the reaction over time. It is intended that the Ca(NO3)2 formed from the reaction can go on to be used as a value-added fertiliser, thus contributing to circular economy. Graphical abstract: (Figure presented.)
PB  - Springer
T2  - Environmental Science and Pollution Research
T1  - Real-time application and modelling of the NOx-sorption reaction on a particulate calcium carbonate surface-flow filter exposed to combustion exhaust
DO  - 10.1007/s11356-024-32743-x
ER  - 

@article{
author = "Barać, Nemanja and Dimić‑Mišić, Katarina and Stijepović, Mirko and Kijevčanin, Mirjana and Imani, Monireh and Uskoković, Petar and Janaćković, Đorđe and Barceló, Ernesto and Gane, Patrick",
year = "2024",
abstract = "Of major interest, especially in city environments, and increasingly inside vehicles or industrial plants, is the drive to reduce human exposure to nitrogen oxides (NOx). This trend has drawn increasing attention to filtration, which has developed remarkably owing to the capabilities of recently developed mathematical models and novel filter concepts. This paper reports on the study of the kinetic modelling of adsorption of nitrogen dioxide (NO2), collected from the tailpipe of a diesel engine, reacting to calcium nitrate salt (Ca(NO3)2) on a surface flow filter consisting of a coating of fine ground limestone or marble (CaCO3) in combination with micro-nanofibrillated cellulose (MNFC) acting as binder and humectant applied onto a multiply recycled newsprint substrate. The coating and substrate are both porous, but on different pore size scales, with the coating having significantly lower permeability. To maximise gas-coating contact, therefore, the coating deposition is pixelated, achieved by pin coating. An axially dispersed gaseous plug flow model (dispersion model) was used to simulate the transport within the coating pore network structure, following earlier flow modelling studies, and a kinetic reaction model was used to examine NO2 to NO3− conversion in correlation with experimental results. Modelling results indicate a 60.38% conversion of exposed NO2 gas to Ca(NO3)2 under the specific conditions applied, with an absolute relative error between the predicted and experimentally estimated value being 0.81%. The model additionally enabled a prediction of effects of changing parameters over a limited perturbation range, thus assisting in predicting filter element consumption, with attention given to the active component CaCO3 surface as a function of particle size in relation to the gas contact exchange, promoting the reaction over time. It is intended that the Ca(NO3)2 formed from the reaction can go on to be used as a value-added fertiliser, thus contributing to circular economy. Graphical abstract: (Figure presented.)",
publisher = "Springer",
journal = "Environmental Science and Pollution Research",
title = "Real-time application and modelling of the NOx-sorption reaction on a particulate calcium carbonate surface-flow filter exposed to combustion exhaust",
doi = "10.1007/s11356-024-32743-x"
}

Barać, N., Dimić‑Mišić, K., Stijepović, M., Kijevčanin, M., Imani, M., Uskoković, P., Janaćković, Đ., Barceló, E.,& Gane, P.. (2024). Real-time application and modelling of the NOx-sorption reaction on a particulate calcium carbonate surface-flow filter exposed to combustion exhaust. in Environmental Science and Pollution Research
Springer..
https://doi.org/10.1007/s11356-024-32743-x

Barać N, Dimić‑Mišić K, Stijepović M, Kijevčanin M, Imani M, Uskoković P, Janaćković Đ, Barceló E, Gane P. Real-time application and modelling of the NOx-sorption reaction on a particulate calcium carbonate surface-flow filter exposed to combustion exhaust. in Environmental Science and Pollution Research. 2024;.
doi:10.1007/s11356-024-32743-x .

Barać, Nemanja, Dimić‑Mišić, Katarina, Stijepović, Mirko, Kijevčanin, Mirjana, Imani, Monireh, Uskoković, Petar, Janaćković, Đorđe, Barceló, Ernesto, Gane, Patrick, "Real-time application and modelling of the NOx-sorption reaction on a particulate calcium carbonate surface-flow filter exposed to combustion exhaust" in Environmental Science and Pollution Research (2024),
https://doi.org/10.1007/s11356-024-32743-x . .

TY  - CONF
AU  - Lazarević, Slavica
AU  - Janković-Častvan, Ivona
AU  - Janaćković, Đorđe
AU  - Petrović, Rada
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7488
PB  - Belgrade : Institut za multidisciplinarna istraživanja
C3  - Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
T1  - Sepiolite-based nanomaterials: structure, properties, and applications for the removal of pollutants from water solutions
SP  - 49
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7488
ER  - 

@conference{
author = "Lazarević, Slavica and Janković-Častvan, Ivona and Janaćković, Đorđe and Petrović, Rada",
year = "2023",
publisher = "Belgrade : Institut za multidisciplinarna istraživanja",
journal = "Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia",
title = "Sepiolite-based nanomaterials: structure, properties, and applications for the removal of pollutants from water solutions",
pages = "49",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7488"
}

Lazarević, S., Janković-Častvan, I., Janaćković, Đ.,& Petrović, R.. (2023). Sepiolite-based nanomaterials: structure, properties, and applications for the removal of pollutants from water solutions. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
Belgrade : Institut za multidisciplinarna istraživanja., 49.
https://hdl.handle.net/21.15107/rcub_technorep_7488

Lazarević S, Janković-Častvan I, Janaćković Đ, Petrović R. Sepiolite-based nanomaterials: structure, properties, and applications for the removal of pollutants from water solutions. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia. 2023;:49.
https://hdl.handle.net/21.15107/rcub_technorep_7488 .

Lazarević, Slavica, Janković-Častvan, Ivona, Janaćković, Đorđe, Petrović, Rada, "Sepiolite-based nanomaterials: structure, properties, and applications for the removal of pollutants from water solutions" in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia (2023):49,
https://hdl.handle.net/21.15107/rcub_technorep_7488 .

TY  - CONF
AU  - Milovanović, Željka
AU  - Lazarević, Slavica
AU  - Janković-Častvan, Ivona
AU  - Radovanović, Željko
AU  - Cvetković, Slobodan
AU  - Janaćković, Đorđe
AU  - Petrović, Rada
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7487
AB  - The sepiolite/ZrO2 composites were prepared in toluene using sepiolite and zirconium propoxide by two different procedures. The efficiency of the obtained adsorbents for the removal of phosphate from water solutions was investigated. X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), energy dispersive analysis (EDS). Fourier transform infrared (FTIR) spectroscopy, DTA/TG thermal analyses, specific surface area determination and determination of the point of zero charge were used to characterize the obtained composites, Sep-Zrl and Sep-ZrII. The results indicate that ZrO, in the form of fine nanoparticles was successfully loaded onto the surface of sepiolite fibers. Adsorption kinetics and equilibrium isotherms were investigated to establish the adsorption rates, maximum capacities and possible mechanisms of the adsorption of phosphate from water onto Sep-Zrl and Sep-Zrll composites at a pH of 4. The adsorption kinetics and isotherm follow the pseudo second-order equation and Freundlich adsorption model, respectively.
PB  - Belgrade : Institut za multidisciplinarna istraživanja
C3  - Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
T1  - Preparation and characterization of sepiolite/ZrO2 composites for phosphate removal from aqueous solutions
SP  - 105
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7487
ER  - 

@conference{
author = "Milovanović, Željka and Lazarević, Slavica and Janković-Častvan, Ivona and Radovanović, Željko and Cvetković, Slobodan and Janaćković, Đorđe and Petrović, Rada",
year = "2023",
abstract = "The sepiolite/ZrO2 composites were prepared in toluene using sepiolite and zirconium propoxide by two different procedures. The efficiency of the obtained adsorbents for the removal of phosphate from water solutions was investigated. X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), energy dispersive analysis (EDS). Fourier transform infrared (FTIR) spectroscopy, DTA/TG thermal analyses, specific surface area determination and determination of the point of zero charge were used to characterize the obtained composites, Sep-Zrl and Sep-ZrII. The results indicate that ZrO, in the form of fine nanoparticles was successfully loaded onto the surface of sepiolite fibers. Adsorption kinetics and equilibrium isotherms were investigated to establish the adsorption rates, maximum capacities and possible mechanisms of the adsorption of phosphate from water onto Sep-Zrl and Sep-Zrll composites at a pH of 4. The adsorption kinetics and isotherm follow the pseudo second-order equation and Freundlich adsorption model, respectively.",
publisher = "Belgrade : Institut za multidisciplinarna istraživanja",
journal = "Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia",
title = "Preparation and characterization of sepiolite/ZrO2 composites for phosphate removal from aqueous solutions",
pages = "105",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7487"
}

Milovanović, Ž., Lazarević, S., Janković-Častvan, I., Radovanović, Ž., Cvetković, S., Janaćković, Đ.,& Petrović, R.. (2023). Preparation and characterization of sepiolite/ZrO2 composites for phosphate removal from aqueous solutions. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
Belgrade : Institut za multidisciplinarna istraživanja., 105.
https://hdl.handle.net/21.15107/rcub_technorep_7487

Milovanović Ž, Lazarević S, Janković-Častvan I, Radovanović Ž, Cvetković S, Janaćković Đ, Petrović R. Preparation and characterization of sepiolite/ZrO2 composites for phosphate removal from aqueous solutions. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia. 2023;:105.
https://hdl.handle.net/21.15107/rcub_technorep_7487 .

Milovanović, Željka, Lazarević, Slavica, Janković-Častvan, Ivona, Radovanović, Željko, Cvetković, Slobodan, Janaćković, Đorđe, Petrović, Rada, "Preparation and characterization of sepiolite/ZrO2 composites for phosphate removal from aqueous solutions" in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia (2023):105,
https://hdl.handle.net/21.15107/rcub_technorep_7487 .

TY  - CONF
AU  - Petrović, Jana
AU  - Radovanović, Željko
AU  - Lazarević, Slavica
AU  - Janaćković, Đorđe
AU  - Petrović, Rada
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7481
AB  - Great attention is directed towards potential visible light photocatalyst, g-C3N4, due to its simple preparation, high stability, low cost and medium band gap (-2,7 eV)

[1]. However, its practical application is limited, mostly because of the high recombination rate of electrons and holes. One of the methods for optimizing g-C3N4 properties is the chemical exfoliation with concentrated acid. It was reported that treating g-C,N4 with sulfuric acid leads to certain surface and structure modifications, which would further enhance the surface functionality and provide better dispersion of metal/semiconductor nanoparticles when forming heterojunction [l] Different researches showed that chemical etching, i.e. exfoliating bulk g-C,N, to obtain nanosheets with concentrated H.SO, could increase the specific surface area, obtain more active sites and convert surface charge. Furthermore, introducing the electron-withdrawing groups at the edge of g-C;N, nanosheets by using oxidizing agent can boost electron migration and enhance the charge separation, but also expand its band gap [2].

In this work, concentrated H2O4 was used to exfoliate bulk g-C,N, and produce g-C,Na nanosheets (sample E-C3N4) and the improved Hummer's method [2] was used for synthesis of oxygen functionalized g-C,N4 (sample EO-C,N4).

The properties of the photocatalysts were studied by FESEM, FTIR, XRD, BET, PL and DRS analysis, as well as by determination of the point of zero charge (pHpzc) and the number of acidic and basic surface functional groups. Photocatalytic reduction of

Cr(VI) was tested at a constant solution concentration (10 mg/l), at pH = 3, under the
simulated visible irradiation and in the presence of citric acid as a hole scavenger. It was determited that acid treatment led to the decreasing in the specific surface area, lowering the pHeze, slightly increased bandgap energy but also enhanced photocatalytic efficiency and the number of surface functional groups.
PB  - Novi Sad : Faculty of Technology
C3  - Programme and book of abstracts / 15th ECerS Conference for Young Scientists in Ceramics, October 11-14, 2023, Novi Sad, Serbia
T1  - Acid treated g-C3N4 photocatalysts for the photocatalytic reduction of Cr(VI)
SP  - 89
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7481
ER  - 

@conference{
author = "Petrović, Jana and Radovanović, Željko and Lazarević, Slavica and Janaćković, Đorđe and Petrović, Rada",
year = "2023",
abstract = "Great attention is directed towards potential visible light photocatalyst, g-C3N4, due to its simple preparation, high stability, low cost and medium band gap (-2,7 eV)

[1]. However, its practical application is limited, mostly because of the high recombination rate of electrons and holes. One of the methods for optimizing g-C3N4 properties is the chemical exfoliation with concentrated acid. It was reported that treating g-C,N4 with sulfuric acid leads to certain surface and structure modifications, which would further enhance the surface functionality and provide better dispersion of metal/semiconductor nanoparticles when forming heterojunction [l] Different researches showed that chemical etching, i.e. exfoliating bulk g-C,N, to obtain nanosheets with concentrated H.SO, could increase the specific surface area, obtain more active sites and convert surface charge. Furthermore, introducing the electron-withdrawing groups at the edge of g-C;N, nanosheets by using oxidizing agent can boost electron migration and enhance the charge separation, but also expand its band gap [2].

In this work, concentrated H2O4 was used to exfoliate bulk g-C,N, and produce g-C,Na nanosheets (sample E-C3N4) and the improved Hummer's method [2] was used for synthesis of oxygen functionalized g-C,N4 (sample EO-C,N4).

The properties of the photocatalysts were studied by FESEM, FTIR, XRD, BET, PL and DRS analysis, as well as by determination of the point of zero charge (pHpzc) and the number of acidic and basic surface functional groups. Photocatalytic reduction of

Cr(VI) was tested at a constant solution concentration (10 mg/l), at pH = 3, under the
simulated visible irradiation and in the presence of citric acid as a hole scavenger. It was determited that acid treatment led to the decreasing in the specific surface area, lowering the pHeze, slightly increased bandgap energy but also enhanced photocatalytic efficiency and the number of surface functional groups.",
publisher = "Novi Sad : Faculty of Technology",
journal = "Programme and book of abstracts / 15th ECerS Conference for Young Scientists in Ceramics, October 11-14, 2023, Novi Sad, Serbia",
title = "Acid treated g-C3N4 photocatalysts for the photocatalytic reduction of Cr(VI)",
pages = "89",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7481"
}

Petrović, J., Radovanović, Ž., Lazarević, S., Janaćković, Đ.,& Petrović, R.. (2023). Acid treated g-C3N4 photocatalysts for the photocatalytic reduction of Cr(VI). in Programme and book of abstracts / 15th ECerS Conference for Young Scientists in Ceramics, October 11-14, 2023, Novi Sad, Serbia
Novi Sad : Faculty of Technology., 89.
https://hdl.handle.net/21.15107/rcub_technorep_7481

Petrović J, Radovanović Ž, Lazarević S, Janaćković Đ, Petrović R. Acid treated g-C3N4 photocatalysts for the photocatalytic reduction of Cr(VI). in Programme and book of abstracts / 15th ECerS Conference for Young Scientists in Ceramics, October 11-14, 2023, Novi Sad, Serbia. 2023;:89.
https://hdl.handle.net/21.15107/rcub_technorep_7481 .

Petrović, Jana, Radovanović, Željko, Lazarević, Slavica, Janaćković, Đorđe, Petrović, Rada, "Acid treated g-C3N4 photocatalysts for the photocatalytic reduction of Cr(VI)" in Programme and book of abstracts / 15th ECerS Conference for Young Scientists in Ceramics, October 11-14, 2023, Novi Sad, Serbia (2023):89,
https://hdl.handle.net/21.15107/rcub_technorep_7481 .

TY  - CONF
AU  - Petrović, Jana
AU  - Radovanović, Željko
AU  - Janaćković, Đorđe
AU  - Lazarević, Slavica
AU  - Petrović, Rada
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7482
AB  - A potential visible light photocatalyst, g-C3N4, has attracted great attention due to its simple
preparation, high stability, low cost and medium band gap (~2,7 eV) [1]. Nevertheless, mostly
high recombination rate of electrons and holes limits its practical application. One of the methods
for optimizing g-C3N4 properties is the acid treatment. It was reported that treating g-C3N4 with
sulfuric acid leads to certain surface and possibly structure modifications, which would further
enhance the surface functionality and provide better dispersion of metal/semiconductor
nanoparticles when forming heterojunction [1]. Different researches showed that treating g-C3N4with H2SO4 could increase the specific surface area, obtain more active sites, convert surface
charge, anchor the -HSO3 electronegative groups to boost electron migration and enhance the
charge separation, exfoliate bulk g-C3N4 into the nanosheets, but also expand its band gap. In this
work, g-C3N4 was modified with H2SO4, by adjusting acid/C3N4 ratio and other experimental
conditions in order to produce protonated (P-C3N4) [2], sulfated (S-C3N4) [1] and exfoliated (EC3N4) g-C3N4 [3]. The properties of the photocatalysts were studied by FESEM, FTIR, BET and
DRS analysis, as well as by determination of the point of zero charge (pHPZC) and the number of
acidic and basic surface functional groups. Photocatalytic reduction of Cr(VI) was tested at a
constant solution concentration (10 mg/l), at pH 3, under the simulated visible irradiation and in
the presence of citric acid as a hole scavenger. It was determited that acid treatment led to the
decreasing in the specific surface area, lowering the pHPZC, slightly increased bandgap energy but
also enhanced photocatalytic efficiency and the number of surface functional groups.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Twenty-fourth Annual Conference YUCOMAT 2023, Herceg Novi, Montenegro, September 4 - 8, 2023
T1  - Enhancement of g-C3N4 with sulfuric acid treatment for photocatalytic reduction of Cr(VI)
SP  - 159
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7482
ER  - 

@conference{
author = "Petrović, Jana and Radovanović, Željko and Janaćković, Đorđe and Lazarević, Slavica and Petrović, Rada",
year = "2023",
abstract = "A potential visible light photocatalyst, g-C3N4, has attracted great attention due to its simple
preparation, high stability, low cost and medium band gap (~2,7 eV) [1]. Nevertheless, mostly
high recombination rate of electrons and holes limits its practical application. One of the methods
for optimizing g-C3N4 properties is the acid treatment. It was reported that treating g-C3N4 with
sulfuric acid leads to certain surface and possibly structure modifications, which would further
enhance the surface functionality and provide better dispersion of metal/semiconductor
nanoparticles when forming heterojunction [1]. Different researches showed that treating g-C3N4with H2SO4 could increase the specific surface area, obtain more active sites, convert surface
charge, anchor the -HSO3 electronegative groups to boost electron migration and enhance the
charge separation, exfoliate bulk g-C3N4 into the nanosheets, but also expand its band gap. In this
work, g-C3N4 was modified with H2SO4, by adjusting acid/C3N4 ratio and other experimental
conditions in order to produce protonated (P-C3N4) [2], sulfated (S-C3N4) [1] and exfoliated (EC3N4) g-C3N4 [3]. The properties of the photocatalysts were studied by FESEM, FTIR, BET and
DRS analysis, as well as by determination of the point of zero charge (pHPZC) and the number of
acidic and basic surface functional groups. Photocatalytic reduction of Cr(VI) was tested at a
constant solution concentration (10 mg/l), at pH 3, under the simulated visible irradiation and in
the presence of citric acid as a hole scavenger. It was determited that acid treatment led to the
decreasing in the specific surface area, lowering the pHPZC, slightly increased bandgap energy but
also enhanced photocatalytic efficiency and the number of surface functional groups.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Twenty-fourth Annual Conference YUCOMAT 2023, Herceg Novi, Montenegro, September 4 - 8, 2023",
title = "Enhancement of g-C3N4 with sulfuric acid treatment for photocatalytic reduction of Cr(VI)",
pages = "159",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7482"
}

Petrović, J., Radovanović, Ž., Janaćković, Đ., Lazarević, S.,& Petrović, R.. (2023). Enhancement of g-C3N4 with sulfuric acid treatment for photocatalytic reduction of Cr(VI). in Programme and The Book of Abstracts / Twenty-fourth Annual Conference YUCOMAT 2023, Herceg Novi, Montenegro, September 4 - 8, 2023
Belgrade : Materials Research Society of Serbia., 159.
https://hdl.handle.net/21.15107/rcub_technorep_7482

Petrović J, Radovanović Ž, Janaćković Đ, Lazarević S, Petrović R. Enhancement of g-C3N4 with sulfuric acid treatment for photocatalytic reduction of Cr(VI). in Programme and The Book of Abstracts / Twenty-fourth Annual Conference YUCOMAT 2023, Herceg Novi, Montenegro, September 4 - 8, 2023. 2023;:159.
https://hdl.handle.net/21.15107/rcub_technorep_7482 .

Petrović, Jana, Radovanović, Željko, Janaćković, Đorđe, Lazarević, Slavica, Petrović, Rada, "Enhancement of g-C3N4 with sulfuric acid treatment for photocatalytic reduction of Cr(VI)" in Programme and The Book of Abstracts / Twenty-fourth Annual Conference YUCOMAT 2023, Herceg Novi, Montenegro, September 4 - 8, 2023 (2023):159,
https://hdl.handle.net/21.15107/rcub_technorep_7482 .

TY  - JOUR
AU  - Milovanović, Željka
AU  - Lazarević, Slavica
AU  - Janković-Častvan, Ivona
AU  - Radovanović, Željko
AU  - Cvetković, Slobodan
AU  - Janaćković, Đorđe
AU  - Petrović, Rada
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6578
AB  - The sepiolite/ZrO2 composites were prepared by sepiolite (Sep) modification with zirconium propoxide in toluene at room temperature for 24 h (Sep–ZrI) or 95 °C for 4 h (sample Sep–ZrII). The efficiency of the obtained composites for the removal of phosphate from aqueous solutions at initial pH = 4 and pH = 8 was investigated. Characterization of the samples shows that synthesis at a higher temperature for a shorter time provides a slightly higher content of amorphous Zr phase, which is deposited on the sepiolite fibers as a thin layer and agglomerated nanoparticles. Compared to Sep, the composites have a lower point of zero charge and higher specific surface area and pore volume. The adsorption kinetics follow the pseudo second-order model. The adsorption capacities of the composites are approximately the same at both initial pH and higher at initial pH = 4 than at pH = 8. The XPS and ATR-FTIR of Sep–ZrI before and after adsorption identifies the formation of inner-sphere complexes as the mechanism of phosphate adsorption. The slow release during desorption with NaOH solution confirms the strong bonds of the phosphates with the surface of the composites.
PB  - MDPI
T2  - Water
T1  - The Removal of Phosphate from Aqueous Solutions by Sepiolite/ZrO2 Composites: Adsorption Behavior and Mechanism
IS  - 13
SP  - 2376
VL  - 15
DO  - 10.3390/w15132376
ER  - 

@article{
author = "Milovanović, Željka and Lazarević, Slavica and Janković-Častvan, Ivona and Radovanović, Željko and Cvetković, Slobodan and Janaćković, Đorđe and Petrović, Rada",
year = "2023",
abstract = "The sepiolite/ZrO2 composites were prepared by sepiolite (Sep) modification with zirconium propoxide in toluene at room temperature for 24 h (Sep–ZrI) or 95 °C for 4 h (sample Sep–ZrII). The efficiency of the obtained composites for the removal of phosphate from aqueous solutions at initial pH = 4 and pH = 8 was investigated. Characterization of the samples shows that synthesis at a higher temperature for a shorter time provides a slightly higher content of amorphous Zr phase, which is deposited on the sepiolite fibers as a thin layer and agglomerated nanoparticles. Compared to Sep, the composites have a lower point of zero charge and higher specific surface area and pore volume. The adsorption kinetics follow the pseudo second-order model. The adsorption capacities of the composites are approximately the same at both initial pH and higher at initial pH = 4 than at pH = 8. The XPS and ATR-FTIR of Sep–ZrI before and after adsorption identifies the formation of inner-sphere complexes as the mechanism of phosphate adsorption. The slow release during desorption with NaOH solution confirms the strong bonds of the phosphates with the surface of the composites.",
publisher = "MDPI",
journal = "Water",
title = "The Removal of Phosphate from Aqueous Solutions by Sepiolite/ZrO2 Composites: Adsorption Behavior and Mechanism",
number = "13",
pages = "2376",
volume = "15",
doi = "10.3390/w15132376"
}

Milovanović, Ž., Lazarević, S., Janković-Častvan, I., Radovanović, Ž., Cvetković, S., Janaćković, Đ.,& Petrović, R.. (2023). The Removal of Phosphate from Aqueous Solutions by Sepiolite/ZrO2 Composites: Adsorption Behavior and Mechanism. in Water
MDPI., 15(13), 2376.
https://doi.org/10.3390/w15132376

Milovanović Ž, Lazarević S, Janković-Častvan I, Radovanović Ž, Cvetković S, Janaćković Đ, Petrović R. The Removal of Phosphate from Aqueous Solutions by Sepiolite/ZrO2 Composites: Adsorption Behavior and Mechanism. in Water. 2023;15(13):2376.
doi:10.3390/w15132376 .

Milovanović, Željka, Lazarević, Slavica, Janković-Častvan, Ivona, Radovanović, Željko, Cvetković, Slobodan, Janaćković, Đorđe, Petrović, Rada, "The Removal of Phosphate from Aqueous Solutions by Sepiolite/ZrO2 Composites: Adsorption Behavior and Mechanism" in Water, 15, no. 13 (2023):2376,
https://doi.org/10.3390/w15132376 . .

TY  - CONF
AU  - Stefanović, Milica
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6739
AB  - The development of metal oxide-based electron transport layers in perovskite solar cells (PSCs) is being intensively researched to achieve highly efficient PSCs. They offer the advantage of higher charge carrier mobility and stability compared to typical organic materials. To reduce the recombination of charge carriers, methylammonium lead bromide (MAPbBr3) perovskite was coupled with vertically aligned TiO2 nanorods (NRs) as an electron transport layer in this study. The TiO2 NRs were grown on commercial FTO glass in hydrothermal conditions. Titanium (IV) isopropoxide (TTIP) was added in drops, slowly, in the diluted solution of HCl. The obtained precursor solution was transferred into a Teflon-lined stainless steel autoclave which contained FTO substrates and heated at 150 °C for 2 h. Then, the substrates were cleaned using DI water and ethanol and annealed at 500 °C for 30 min. The solution of MAPbBr3 in dimethylformamide (DMF) was deposited on TiO2 NRs by spin coating technique. FESEM results showed that TiO2 NRs were porous and oriented vertically upwards to the substrate and that the perovskite material filled the space between TiO2 NRs. Diffuse reflectance spectroscopy measurement of the sample proved that the absorption edge of the prepared TiO2 NRs/MAPbBr3 was extended into the visible range. By measuring the I-V characteristics of the sample in the dark and under visible light, a hysteresis curve was obtained. Prepared TiO2 NRs/MAPbBr3 photodiode will be the basis for the construction of solar cells.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XI New Frontiers in Multifunctional Material Science and Processing, Serbian Academy of Sciences and Art Serbia, Belgrade,18-20.September 2023
T1  - Vertically aligned TiO2 nanorod array as an electron transport layer in perovskite photodiode
EP  - 73
SP  - 72
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6739
ER  - 

@conference{
author = "Stefanović, Milica and Petrović, Rada and Janaćković, Đorđe",
year = "2023",
abstract = "The development of metal oxide-based electron transport layers in perovskite solar cells (PSCs) is being intensively researched to achieve highly efficient PSCs. They offer the advantage of higher charge carrier mobility and stability compared to typical organic materials. To reduce the recombination of charge carriers, methylammonium lead bromide (MAPbBr3) perovskite was coupled with vertically aligned TiO2 nanorods (NRs) as an electron transport layer in this study. The TiO2 NRs were grown on commercial FTO glass in hydrothermal conditions. Titanium (IV) isopropoxide (TTIP) was added in drops, slowly, in the diluted solution of HCl. The obtained precursor solution was transferred into a Teflon-lined stainless steel autoclave which contained FTO substrates and heated at 150 °C for 2 h. Then, the substrates were cleaned using DI water and ethanol and annealed at 500 °C for 30 min. The solution of MAPbBr3 in dimethylformamide (DMF) was deposited on TiO2 NRs by spin coating technique. FESEM results showed that TiO2 NRs were porous and oriented vertically upwards to the substrate and that the perovskite material filled the space between TiO2 NRs. Diffuse reflectance spectroscopy measurement of the sample proved that the absorption edge of the prepared TiO2 NRs/MAPbBr3 was extended into the visible range. By measuring the I-V characteristics of the sample in the dark and under visible light, a hysteresis curve was obtained. Prepared TiO2 NRs/MAPbBr3 photodiode will be the basis for the construction of solar cells.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XI New Frontiers in Multifunctional Material Science and Processing, Serbian Academy of Sciences and Art Serbia, Belgrade,18-20.September 2023",
title = "Vertically aligned TiO2 nanorod array as an electron transport layer in perovskite photodiode",
pages = "73-72",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6739"
}

Stefanović, M., Petrović, R.,& Janaćković, Đ.. (2023). Vertically aligned TiO2 nanorod array as an electron transport layer in perovskite photodiode. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XI New Frontiers in Multifunctional Material Science and Processing, Serbian Academy of Sciences and Art Serbia, Belgrade,18-20.September 2023
Belgrade : Serbian Ceramic Society., 72-73.
https://hdl.handle.net/21.15107/rcub_technorep_6739

Stefanović M, Petrović R, Janaćković Đ. Vertically aligned TiO2 nanorod array as an electron transport layer in perovskite photodiode. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XI New Frontiers in Multifunctional Material Science and Processing, Serbian Academy of Sciences and Art Serbia, Belgrade,18-20.September 2023. 2023;:72-73.
https://hdl.handle.net/21.15107/rcub_technorep_6739 .

Stefanović, Milica, Petrović, Rada, Janaćković, Đorđe, "Vertically aligned TiO2 nanorod array as an electron transport layer in perovskite photodiode" in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XI New Frontiers in Multifunctional Material Science and Processing, Serbian Academy of Sciences and Art Serbia, Belgrade,18-20.September 2023 (2023):72-73,
https://hdl.handle.net/21.15107/rcub_technorep_6739 .

TY  - JOUR
AU  - Milivojević, Marija
AU  - Chen, Ke
AU  - Radovanović, Željko
AU  - Petrović, Rada
AU  - Dimitrijević-Branković, Suzana
AU  - Kojić, Vesna
AU  - Marković, Danica
AU  - Janaćković, Đorđe
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6803
AB  - The restoration of large bone defects caused by trauma, tumor resection, or infection is a major clinical problem in orthopedics and dentistry because postoperative infections, corrosion, and limited osteointegration of metal implants can lead to loosening of the implant. The aim of this study was to improve the surface properties of a 3D-printed (electron beam melting) Ti6Al4V-based macroporous scaffold by multilayer coating with bioactive silicate glasses (BAGs) and hydroxyapatite doped with a silver (AgHAP) or AgHAP additionally sonochemically modified with ZnO (ZnO-AgHAP). The coated scaffolds AgHAP_BAGs_Ti and ZnO-AgHAP_BAGs_Ti enhanced cytocompatibility in L929 and MRC5 cell lines and expressed bioactivity in simulated body fluid. A lower release of vanadium ions in coated samples compared to bare Ti scaffold indicates decreased dissolution of Ti alloy in coated samples. The coated samples reduced growth ofEscherichia coliandStaphylococcus aureusfor 4-6 orders of magnitude. Therefore, the 3D-printed Ti-based scaffolds coated with BAGs and (ZnO-)AgHAP have great potential for application as a multifunctional implant with antibacterial properties for the restoration of defects in load-bearing bones.
PB  - IOP Publishing
T2  - Biomedical Materials
T1  - Enhanced antimicrobial properties and bioactivity of 3D-printed titanium scaffolds by multilayer bioceramic coating for large bone defects
IS  - 6
SP  - 065020
VL  - 18
DO  - 10.1088/1748-605X/ad02d2
ER  - 

@article{
author = "Milivojević, Marija and Chen, Ke and Radovanović, Željko and Petrović, Rada and Dimitrijević-Branković, Suzana and Kojić, Vesna and Marković, Danica and Janaćković, Đorđe",
year = "2023",
abstract = "The restoration of large bone defects caused by trauma, tumor resection, or infection is a major clinical problem in orthopedics and dentistry because postoperative infections, corrosion, and limited osteointegration of metal implants can lead to loosening of the implant. The aim of this study was to improve the surface properties of a 3D-printed (electron beam melting) Ti6Al4V-based macroporous scaffold by multilayer coating with bioactive silicate glasses (BAGs) and hydroxyapatite doped with a silver (AgHAP) or AgHAP additionally sonochemically modified with ZnO (ZnO-AgHAP). The coated scaffolds AgHAP_BAGs_Ti and ZnO-AgHAP_BAGs_Ti enhanced cytocompatibility in L929 and MRC5 cell lines and expressed bioactivity in simulated body fluid. A lower release of vanadium ions in coated samples compared to bare Ti scaffold indicates decreased dissolution of Ti alloy in coated samples. The coated samples reduced growth ofEscherichia coliandStaphylococcus aureusfor 4-6 orders of magnitude. Therefore, the 3D-printed Ti-based scaffolds coated with BAGs and (ZnO-)AgHAP have great potential for application as a multifunctional implant with antibacterial properties for the restoration of defects in load-bearing bones.",
publisher = "IOP Publishing",
journal = "Biomedical Materials",
title = "Enhanced antimicrobial properties and bioactivity of 3D-printed titanium scaffolds by multilayer bioceramic coating for large bone defects",
number = "6",
pages = "065020",
volume = "18",
doi = "10.1088/1748-605X/ad02d2"
}

Milivojević, M., Chen, K., Radovanović, Ž., Petrović, R., Dimitrijević-Branković, S., Kojić, V., Marković, D.,& Janaćković, Đ.. (2023). Enhanced antimicrobial properties and bioactivity of 3D-printed titanium scaffolds by multilayer bioceramic coating for large bone defects. in Biomedical Materials
IOP Publishing., 18(6), 065020.
https://doi.org/10.1088/1748-605X/ad02d2

Milivojević M, Chen K, Radovanović Ž, Petrović R, Dimitrijević-Branković S, Kojić V, Marković D, Janaćković Đ. Enhanced antimicrobial properties and bioactivity of 3D-printed titanium scaffolds by multilayer bioceramic coating for large bone defects. in Biomedical Materials. 2023;18(6):065020.
doi:10.1088/1748-605X/ad02d2 .

Milivojević, Marija, Chen, Ke, Radovanović, Željko, Petrović, Rada, Dimitrijević-Branković, Suzana, Kojić, Vesna, Marković, Danica, Janaćković, Đorđe, "Enhanced antimicrobial properties and bioactivity of 3D-printed titanium scaffolds by multilayer bioceramic coating for large bone defects" in Biomedical Materials, 18, no. 6 (2023):065020,
https://doi.org/10.1088/1748-605X/ad02d2 . .

TY  - JOUR
AU  - Kokunešoski, Maja
AU  - Janaćković, Đorđe
AU  - Kićević, Dušan
AU  - Ilić, Svetlana
AU  - Šaponjić, Aleksandra
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6468
AB  - Effect of methyl methacrylate (MMA) as a binder and heating treatment were investigated to improve green alumina compacts machinability. Properties of green compacts and their corresponding sintered samples prepared with and without MMA were compared. Investigation of green and sintered properties was performed on samples compacted at applied pressures up to 150 MPa. After pressing, samples with MMA were thermally treated at 115oC. The intention was to enhance the polymerization of MMA at a temperature a little higher than the glass transition temperature (Tg = 103°C) of poly (methyl methacrylate). Green compacts with MMA had higher green density values than those without MMA. Sintered samples with MMA had lower values of sintered density and higher values of total porosity; after sintering, relative linear shrinkage was around 15 % for the whole range of applied pressures. The possibility of easily machining the green compacts with MMA produces great possibilities for application in many fields.
AB  - Испитиван je утицај метил метакрилата (ММА) као везива као и утицај термичког третманана машинску обрадивост испресака од алумине. Упоређена су својства како код испресака од алумине припремљених са и без ММА тако и код њима одговарајућих синтерованих узорака. Испитивање особина испресака и синтерованих узоракаизведено је на узорцима који су испресовани на притисцима до 150 МРа. Након пресовања, узорци са ММА су термички третирани на 115о С са намером да ММА полимеризује на нешто вишој температури од температуре стакластог прелаза (Тg = 103°C) поли(метил метакрилата. Испресци са ММА имали су веће густине од испресака без ММА. Синтеровани узорци припремљени са ММА имали су ниже синтероване густине и већу укупну порозност, aнакон синтеровања, релативно линеарно скупљање је било око 15 % за цео опсег примењених притисака пресовања. Пробе машинске обрадљивости показале су да машинска обрада испресака са ММА има велике могућности за комерцијалну примену.
PB  - International Institute for the Science of Sintering (IISS)
T2  - Science of Sintering
T1  - The Effect of Acrylate on the Properties and Machinability of Alumina Ceramics
EP  - 113
IS  - 1
SP  - 103
VL  - 55
DO  - 10.2298/SOS2301103K
ER  - 

@article{
author = "Kokunešoski, Maja and Janaćković, Đorđe and Kićević, Dušan and Ilić, Svetlana and Šaponjić, Aleksandra",
year = "2023",
abstract = "Effect of methyl methacrylate (MMA) as a binder and heating treatment were investigated to improve green alumina compacts machinability. Properties of green compacts and their corresponding sintered samples prepared with and without MMA were compared. Investigation of green and sintered properties was performed on samples compacted at applied pressures up to 150 MPa. After pressing, samples with MMA were thermally treated at 115oC. The intention was to enhance the polymerization of MMA at a temperature a little higher than the glass transition temperature (Tg = 103°C) of poly (methyl methacrylate). Green compacts with MMA had higher green density values than those without MMA. Sintered samples with MMA had lower values of sintered density and higher values of total porosity; after sintering, relative linear shrinkage was around 15 % for the whole range of applied pressures. The possibility of easily machining the green compacts with MMA produces great possibilities for application in many fields., Испитиван je утицај метил метакрилата (ММА) као везива као и утицај термичког третманана машинску обрадивост испресака од алумине. Упоређена су својства како код испресака од алумине припремљених са и без ММА тако и код њима одговарајућих синтерованих узорака. Испитивање особина испресака и синтерованих узоракаизведено је на узорцима који су испресовани на притисцима до 150 МРа. Након пресовања, узорци са ММА су термички третирани на 115о С са намером да ММА полимеризује на нешто вишој температури од температуре стакластог прелаза (Тg = 103°C) поли(метил метакрилата. Испресци са ММА имали су веће густине од испресака без ММА. Синтеровани узорци припремљени са ММА имали су ниже синтероване густине и већу укупну порозност, aнакон синтеровања, релативно линеарно скупљање је било око 15 % за цео опсег примењених притисака пресовања. Пробе машинске обрадљивости показале су да машинска обрада испресака са ММА има велике могућности за комерцијалну примену.",
publisher = "International Institute for the Science of Sintering (IISS)",
journal = "Science of Sintering",
title = "The Effect of Acrylate on the Properties and Machinability of Alumina Ceramics",
pages = "113-103",
number = "1",
volume = "55",
doi = "10.2298/SOS2301103K"
}

Kokunešoski, M., Janaćković, Đ., Kićević, D., Ilić, S.,& Šaponjić, A.. (2023). The Effect of Acrylate on the Properties and Machinability of Alumina Ceramics. in Science of Sintering
International Institute for the Science of Sintering (IISS)., 55(1), 103-113.
https://doi.org/10.2298/SOS2301103K

Kokunešoski M, Janaćković Đ, Kićević D, Ilić S, Šaponjić A. The Effect of Acrylate on the Properties and Machinability of Alumina Ceramics. in Science of Sintering. 2023;55(1):103-113.
doi:10.2298/SOS2301103K .

Kokunešoski, Maja, Janaćković, Đorđe, Kićević, Dušan, Ilić, Svetlana, Šaponjić, Aleksandra, "The Effect of Acrylate on the Properties and Machinability of Alumina Ceramics" in Science of Sintering, 55, no. 1 (2023):103-113,
https://doi.org/10.2298/SOS2301103K . .

TY  - JOUR
AU  - Stojanović, Dušica
AU  - Ivanovska, Aleksandra
AU  - Barać, Nemanja
AU  - Dimić-Mišić, Katarina
AU  - Kostić, Mirjana
AU  - Radojević, Vesna
AU  - Janaćković, Đorđe
AU  - Uskoković, Petar
AU  - Barceló, Ernest
AU  - Gane, Patrick
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6571
AB  - Ionic liquid 1-butyl-3-methylimidazolium chloride [BMIM][Cl] was used to prepare cellulose (CELL), cellulose/polycaprolactone (CELL/PCL), cellulose/polycaprolactone/keratin (CELL/PCL/KER), and cellulose/polycaprolactone/keratin/ground calcium carbonate (CELL/PCL/KER/GCC) biodegradable mulch films. Attenuated Total Reflectance Fourier-Transform Infrared (ATR-FTIR) spectroscopy, optical microscopy, and Field-Emission Scanning Electron Microscopy (FE-SEM) were used to verify the films’ surface chemistry and morphology. Mulch film made of only cellulose regenerated from ionic liquid solution exhibited the highest tensile strength (75.3 ± 2.1 MPa) and modulus of elasticity of 944.4 ± 2.0 MPa. Among samples containing PCL, CELL/PCL/KER/GCC is characterized by the highest tensile strength (15.8 ± 0.4 MPa) and modulus of elasticity (687.5 ± 16.6 MPa). The film’s breaking strain decreased for all samples containing PCL upon the addition of KER and KER/GCC. The melting temperature of pure PCL is 62.3 °C, whereas that of CELL/PCL film has a slight tendency for melting point depression (61.0 °C), which is a characteristic of partially miscible polymer blends. Furthermore, Differential Scanning Calorimetry (DSC) analysis revealed that the addition of KER or KER/GCC to CELL/PCL films resulted in an increment in melting temperature from 61.0 to 62.6 and 68.9 °C and an improvement in sample crystallinity by 2.2 and 3.0 times, respectively. The light transmittance of all studied samples was greater than 60%. The reported method for mulch film preparation is green and recyclable ([BMIM][Cl] can be recovered), and the inclusion of KER derived by extraction from waste chicken feathers enables conversion to organic biofertilizer. The findings of this study contribute to sustainable agriculture by providing nutrients that enhance the growth rate of plants, and hence food production, while reducing environmental pressure. The addition of GCC furthermore provides a source of Ca2+ for plant micronutrition and a supplementary control of soil pH.
PB  - MDPI
T2  - Polymers
T1  - Biodegradable Cellulose/Polycaprolactone/Keratin/Calcium Carbonate Mulch Films Prepared in Imidazolium-Based Ionic Liquid
IS  - 12
SP  - 2729
VL  - 15
DO  - 10.3390/polym15122729
ER  - 

@article{
author = "Stojanović, Dušica and Ivanovska, Aleksandra and Barać, Nemanja and Dimić-Mišić, Katarina and Kostić, Mirjana and Radojević, Vesna and Janaćković, Đorđe and Uskoković, Petar and Barceló, Ernest and Gane, Patrick",
year = "2023",
abstract = "Ionic liquid 1-butyl-3-methylimidazolium chloride [BMIM][Cl] was used to prepare cellulose (CELL), cellulose/polycaprolactone (CELL/PCL), cellulose/polycaprolactone/keratin (CELL/PCL/KER), and cellulose/polycaprolactone/keratin/ground calcium carbonate (CELL/PCL/KER/GCC) biodegradable mulch films. Attenuated Total Reflectance Fourier-Transform Infrared (ATR-FTIR) spectroscopy, optical microscopy, and Field-Emission Scanning Electron Microscopy (FE-SEM) were used to verify the films’ surface chemistry and morphology. Mulch film made of only cellulose regenerated from ionic liquid solution exhibited the highest tensile strength (75.3 ± 2.1 MPa) and modulus of elasticity of 944.4 ± 2.0 MPa. Among samples containing PCL, CELL/PCL/KER/GCC is characterized by the highest tensile strength (15.8 ± 0.4 MPa) and modulus of elasticity (687.5 ± 16.6 MPa). The film’s breaking strain decreased for all samples containing PCL upon the addition of KER and KER/GCC. The melting temperature of pure PCL is 62.3 °C, whereas that of CELL/PCL film has a slight tendency for melting point depression (61.0 °C), which is a characteristic of partially miscible polymer blends. Furthermore, Differential Scanning Calorimetry (DSC) analysis revealed that the addition of KER or KER/GCC to CELL/PCL films resulted in an increment in melting temperature from 61.0 to 62.6 and 68.9 °C and an improvement in sample crystallinity by 2.2 and 3.0 times, respectively. The light transmittance of all studied samples was greater than 60%. The reported method for mulch film preparation is green and recyclable ([BMIM][Cl] can be recovered), and the inclusion of KER derived by extraction from waste chicken feathers enables conversion to organic biofertilizer. The findings of this study contribute to sustainable agriculture by providing nutrients that enhance the growth rate of plants, and hence food production, while reducing environmental pressure. The addition of GCC furthermore provides a source of Ca2+ for plant micronutrition and a supplementary control of soil pH.",
publisher = "MDPI",
journal = "Polymers",
title = "Biodegradable Cellulose/Polycaprolactone/Keratin/Calcium Carbonate Mulch Films Prepared in Imidazolium-Based Ionic Liquid",
number = "12",
pages = "2729",
volume = "15",
doi = "10.3390/polym15122729"
}

Stojanović, D., Ivanovska, A., Barać, N., Dimić-Mišić, K., Kostić, M., Radojević, V., Janaćković, Đ., Uskoković, P., Barceló, E.,& Gane, P.. (2023). Biodegradable Cellulose/Polycaprolactone/Keratin/Calcium Carbonate Mulch Films Prepared in Imidazolium-Based Ionic Liquid. in Polymers
MDPI., 15(12), 2729.
https://doi.org/10.3390/polym15122729

Stojanović D, Ivanovska A, Barać N, Dimić-Mišić K, Kostić M, Radojević V, Janaćković Đ, Uskoković P, Barceló E, Gane P. Biodegradable Cellulose/Polycaprolactone/Keratin/Calcium Carbonate Mulch Films Prepared in Imidazolium-Based Ionic Liquid. in Polymers. 2023;15(12):2729.
doi:10.3390/polym15122729 .

Stojanović, Dušica, Ivanovska, Aleksandra, Barać, Nemanja, Dimić-Mišić, Katarina, Kostić, Mirjana, Radojević, Vesna, Janaćković, Đorđe, Uskoković, Petar, Barceló, Ernest, Gane, Patrick, "Biodegradable Cellulose/Polycaprolactone/Keratin/Calcium Carbonate Mulch Films Prepared in Imidazolium-Based Ionic Liquid" in Polymers, 15, no. 12 (2023):2729,
https://doi.org/10.3390/polym15122729 . .

TY  - CONF
AU  - Matić, Tamara
AU  - Ležaja Zebić, Maja
AU  - Miletić, Vesna
AU  - Janaćković, Đorđe
AU  - Veljović, Đorđe
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6685
UR  - https://ecers2023.org/en/program/full-conference-program/34
AB  - The main drawback of resin-based composites (RBCs) widely used in restorative dentistry presents their volumetric shrinkage during the polymerization that can lead to clinical failures of restorations such asmarginal gap formation, bacterial microleakage, fractures, and postoperative sensitivity. To address this problem, sintered hydroxyapatite based dental inserts were introduced in the central part of molar teethrestoration, due to chemical and structural similarities with inorganic part of teeth.
The fabrication of bioceramic dental inserts based on HAP doped with Sr and/or Mg ions presents a way to obtain a dentin substitute that has even greater resemblance to the biological apatite in dentin. However, ion-substitutions arise lattice strain that can have a signifi cant impact on phase composition and properties of apatite materials, especially upon thermal treatment, which could be determining for their further application.
The aims of this study were to comparatively analyze physico-chemical and mechanical properties of the Sr- or Mg-, and Sr+Mg substituted HAP based dental inserts; and evaluate their possible application as dentinsubstitutes. Mono (5 mol. % Sr or Mg ions) and binary- (3 mol.% Sr and 3 mol.% Mg ions) doped HAP nanoparticles were hydrothermally obtained, isostatically pressed into compacts and eventually sintered at 1200°C to obtain dental inserts. The inserts are meant to be adhered to the cavity walls as well as topped with resin composite for sealing and esthetic purposes. Bonding ability of obtained inserts with different commercialrestorative materials, as well as fracture resistance of human molars restored with doped HAP inserts was investigated.
Ion doping was found to infl uence phase compositions of sintered inserts, leading to different mechanical properties and etching behavior of inserts. All inserts showed fracture toughness and bonding ability torestorative materials similar to dentin, while the highest bond strength was obtained for HAP insert doped with 5 mol% Mg (Mg-HAP) bonded to. Fracture resistance of human molars restored with Mg-HAP wasshown to be similar to the fracture resistance of the conventionally restored molars. In conclusion the obtained hydroxyapatite based dental inserts present promising materials for application as dentin substitutes inrestorative dentistry, which have the potential to extend the durability of the restoration.
PB  - European Ceramic Society
C3  - The XVIIIth Conference and Exhibition of the European Ceramic Society (ECerS), Lyon-France, 2-6 July 2023
T1  - Sintered dental inserts based on ion-doped hydroxyapatite as dentin substitutes
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6685
ER  - 

@conference{
author = "Matić, Tamara and Ležaja Zebić, Maja and Miletić, Vesna and Janaćković, Đorđe and Veljović, Đorđe",
year = "2023",
abstract = "The main drawback of resin-based composites (RBCs) widely used in restorative dentistry presents their volumetric shrinkage during the polymerization that can lead to clinical failures of restorations such asmarginal gap formation, bacterial microleakage, fractures, and postoperative sensitivity. To address this problem, sintered hydroxyapatite based dental inserts were introduced in the central part of molar teethrestoration, due to chemical and structural similarities with inorganic part of teeth.
The fabrication of bioceramic dental inserts based on HAP doped with Sr and/or Mg ions presents a way to obtain a dentin substitute that has even greater resemblance to the biological apatite in dentin. However, ion-substitutions arise lattice strain that can have a signifi cant impact on phase composition and properties of apatite materials, especially upon thermal treatment, which could be determining for their further application.
The aims of this study were to comparatively analyze physico-chemical and mechanical properties of the Sr- or Mg-, and Sr+Mg substituted HAP based dental inserts; and evaluate their possible application as dentinsubstitutes. Mono (5 mol. % Sr or Mg ions) and binary- (3 mol.% Sr and 3 mol.% Mg ions) doped HAP nanoparticles were hydrothermally obtained, isostatically pressed into compacts and eventually sintered at 1200°C to obtain dental inserts. The inserts are meant to be adhered to the cavity walls as well as topped with resin composite for sealing and esthetic purposes. Bonding ability of obtained inserts with different commercialrestorative materials, as well as fracture resistance of human molars restored with doped HAP inserts was investigated.
Ion doping was found to infl uence phase compositions of sintered inserts, leading to different mechanical properties and etching behavior of inserts. All inserts showed fracture toughness and bonding ability torestorative materials similar to dentin, while the highest bond strength was obtained for HAP insert doped with 5 mol% Mg (Mg-HAP) bonded to. Fracture resistance of human molars restored with Mg-HAP wasshown to be similar to the fracture resistance of the conventionally restored molars. In conclusion the obtained hydroxyapatite based dental inserts present promising materials for application as dentin substitutes inrestorative dentistry, which have the potential to extend the durability of the restoration.",
publisher = "European Ceramic Society",
journal = "The XVIIIth Conference and Exhibition of the European Ceramic Society (ECerS), Lyon-France, 2-6 July 2023",
title = "Sintered dental inserts based on ion-doped hydroxyapatite as dentin substitutes",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6685"
}

Matić, T., Ležaja Zebić, M., Miletić, V., Janaćković, Đ.,& Veljović, Đ.. (2023). Sintered dental inserts based on ion-doped hydroxyapatite as dentin substitutes. in The XVIIIth Conference and Exhibition of the European Ceramic Society (ECerS), Lyon-France, 2-6 July 2023
European Ceramic Society..
https://hdl.handle.net/21.15107/rcub_technorep_6685

Matić T, Ležaja Zebić M, Miletić V, Janaćković Đ, Veljović Đ. Sintered dental inserts based on ion-doped hydroxyapatite as dentin substitutes. in The XVIIIth Conference and Exhibition of the European Ceramic Society (ECerS), Lyon-France, 2-6 July 2023. 2023;.
https://hdl.handle.net/21.15107/rcub_technorep_6685 .

Matić, Tamara, Ležaja Zebić, Maja, Miletić, Vesna, Janaćković, Đorđe, Veljović, Đorđe, "Sintered dental inserts based on ion-doped hydroxyapatite as dentin substitutes" in The XVIIIth Conference and Exhibition of the European Ceramic Society (ECerS), Lyon-France, 2-6 July 2023 (2023),
https://hdl.handle.net/21.15107/rcub_technorep_6685 .

TY  - CONF
AU  - Stefanović, Milica
AU  - Jovančićević, Branimir
AU  - Janaćković, Đorđe
AU  - Antić, Nevena
AU  - Gallart, Francesc
AU  - Moreno-de las Heras, Mariano
AU  - Kašanin-Grubin, Milica
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7137
AB  - This study involves establishing a relationship between weathering and erosion processes in badlands comparing the mineralogical and physicochemical properties of unweathered and weathered material formed in the natural environment and under laboratory climate simulation experiments. Three unweathered samples with different mineralogical contents were taken from the badlands of Vallcebre and Bagà in Spain. The climatic conditions in these areas are humid-Mediterranean. Besides quartz and calcite as dominant minerals, one unweathered sample contained smectite and gypsum, the second smectite and the third neither smectite nor gypsum. The laboratory climate simulation experiment was designed so that each sample had two sub-samples, one of which was exposed to rain and the second to snow. In the first part, the samples were placed in a climate chamber at a temperature of -3 °C after simulating rain (~140 ml) or snow (~150 g). After 15 cycles, in the second part of the experiment, all samples were exposed to rain (~140 ml) and placed in a climate chamber at a temperature of 50 °C. These treatments were repeated 8 times. Analyses of the mineralogical and physicochemical properties of the material before and after the experiment give a clear insight into the changes in mineralogy, chemical composition, grain size, porosity, etc. The changes in the microstructure were analysed using Field Emission Scanning Electron Microscopy (FESEM). The particle size distribution was determined by laser diffraction, while mineralogy was determined by X-ray diffraction (XRD). The Brunauer-Emmett-Teller (BET) surface analysis confirmed that the sample with smectite had the highest specific surface area. It was also proved that other measured parameters such as volume and diameter of the pores changed with weathering rate.
C3  - 9th EUGEO Congress, Barcelona 4-7 September 2023
T1  - How do mineralogical and physicochemical properties of badland materials change during weathering and erosion processes?
SP  - 565
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7137
ER  - 

@conference{
author = "Stefanović, Milica and Jovančićević, Branimir and Janaćković, Đorđe and Antić, Nevena and Gallart, Francesc and Moreno-de las Heras, Mariano and Kašanin-Grubin, Milica",
year = "2023",
abstract = "This study involves establishing a relationship between weathering and erosion processes in badlands comparing the mineralogical and physicochemical properties of unweathered and weathered material formed in the natural environment and under laboratory climate simulation experiments. Three unweathered samples with different mineralogical contents were taken from the badlands of Vallcebre and Bagà in Spain. The climatic conditions in these areas are humid-Mediterranean. Besides quartz and calcite as dominant minerals, one unweathered sample contained smectite and gypsum, the second smectite and the third neither smectite nor gypsum. The laboratory climate simulation experiment was designed so that each sample had two sub-samples, one of which was exposed to rain and the second to snow. In the first part, the samples were placed in a climate chamber at a temperature of -3 °C after simulating rain (~140 ml) or snow (~150 g). After 15 cycles, in the second part of the experiment, all samples were exposed to rain (~140 ml) and placed in a climate chamber at a temperature of 50 °C. These treatments were repeated 8 times. Analyses of the mineralogical and physicochemical properties of the material before and after the experiment give a clear insight into the changes in mineralogy, chemical composition, grain size, porosity, etc. The changes in the microstructure were analysed using Field Emission Scanning Electron Microscopy (FESEM). The particle size distribution was determined by laser diffraction, while mineralogy was determined by X-ray diffraction (XRD). The Brunauer-Emmett-Teller (BET) surface analysis confirmed that the sample with smectite had the highest specific surface area. It was also proved that other measured parameters such as volume and diameter of the pores changed with weathering rate.",
journal = "9th EUGEO Congress, Barcelona 4-7 September 2023",
title = "How do mineralogical and physicochemical properties of badland materials change during weathering and erosion processes?",
pages = "565",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7137"
}

Stefanović, M., Jovančićević, B., Janaćković, Đ., Antić, N., Gallart, F., Moreno-de las Heras, M.,& Kašanin-Grubin, M.. (2023). How do mineralogical and physicochemical properties of badland materials change during weathering and erosion processes?. in 9th EUGEO Congress, Barcelona 4-7 September 2023, 565.
https://hdl.handle.net/21.15107/rcub_technorep_7137

Stefanović M, Jovančićević B, Janaćković Đ, Antić N, Gallart F, Moreno-de las Heras M, Kašanin-Grubin M. How do mineralogical and physicochemical properties of badland materials change during weathering and erosion processes?. in 9th EUGEO Congress, Barcelona 4-7 September 2023. 2023;:565.
https://hdl.handle.net/21.15107/rcub_technorep_7137 .

Stefanović, Milica, Jovančićević, Branimir, Janaćković, Đorđe, Antić, Nevena, Gallart, Francesc, Moreno-de las Heras, Mariano, Kašanin-Grubin, Milica, "How do mineralogical and physicochemical properties of badland materials change during weathering and erosion processes?" in 9th EUGEO Congress, Barcelona 4-7 September 2023 (2023):565,
https://hdl.handle.net/21.15107/rcub_technorep_7137 .

TY  - CONF
AU  - Ivanovska, Aleksandra
AU  - Stojanović, Dušica
AU  - Barać, Nemanja
AU  - Dimić-Mišić, Katarina
AU  - Kostić, Mirjana
AU  - Radojević, Vesna
AU  - Uskoković, Petar
AU  - Janaćković, Đorđe
AU  - Barcelo, Ernesto
AU  - Gane, Patrick
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6820
AB  - Biodegradable mulch films from cellulose (CELL), cellulose/polycaprolactone (CELL/PCL),
cellulose/polycaprolactone/keratin (CELL/PCL/KER) and cellulose/polycaprolactone/keratin/ground calcium carbonate (CELL/PCL/KER/GCC) were prepared using Ionic liquid as a green
solvent. Pure cellulose biopolymer is characterised by better mechanical properties (tensile
strength - force per unit cross-sectional area at breakage - of 75.3 MPa and modulus of elasticity
of 944.4 MPa) than the other studied samples which is attributed to the formation of partially
miscible polymer blends. Among samples containing PCL, CELL/PCL/KER/GCC has the highest
tensile strength and modulus of elasticity. The addition of KER or KER/GCC to CELL/PCL films
resulted in an increment in melting temperature and an improvement of sample crystallinity. The
light transmittance of all films was >60 %. The incorporation of KER enhanced the
biodegradability of the biocomposites, while KER/GCC addition slightly inhibited degradation
due to an increased hydrophobicity and crystallisation growth of semi-crystalline biopolymers.
The reported method for mulch film preparation is green and recyclable, and, when including a
readily available source of KER, such as by extraction from waste chicken feathers, enables
conversion to organic biofertiliser. The findings of this study contributed to sustainable agriculture
by providing nutrients that enhance the growth speed of the plant, and hence food production, and
reduce environmental pressure. Inclusion of GCC additionally provides not only Ca2+ for plant
consumption but also soil pH control.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Twenty-fourth Annual Conference YUCOMAT 2023, Herceg Novi, Montenegro, September 4 - 8, 2023
T1  - Biodegradable mulch films obtained from unique combinations of cellulose, polycaprolactone, keratin and calcium carbonate
SP  - 135
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6820
ER  - 

@conference{
author = "Ivanovska, Aleksandra and Stojanović, Dušica and Barać, Nemanja and Dimić-Mišić, Katarina and Kostić, Mirjana and Radojević, Vesna and Uskoković, Petar and Janaćković, Đorđe and Barcelo, Ernesto and Gane, Patrick",
year = "2023",
abstract = "Biodegradable mulch films from cellulose (CELL), cellulose/polycaprolactone (CELL/PCL),
cellulose/polycaprolactone/keratin (CELL/PCL/KER) and cellulose/polycaprolactone/keratin/ground calcium carbonate (CELL/PCL/KER/GCC) were prepared using Ionic liquid as a green
solvent. Pure cellulose biopolymer is characterised by better mechanical properties (tensile
strength - force per unit cross-sectional area at breakage - of 75.3 MPa and modulus of elasticity
of 944.4 MPa) than the other studied samples which is attributed to the formation of partially
miscible polymer blends. Among samples containing PCL, CELL/PCL/KER/GCC has the highest
tensile strength and modulus of elasticity. The addition of KER or KER/GCC to CELL/PCL films
resulted in an increment in melting temperature and an improvement of sample crystallinity. The
light transmittance of all films was >60 %. The incorporation of KER enhanced the
biodegradability of the biocomposites, while KER/GCC addition slightly inhibited degradation
due to an increased hydrophobicity and crystallisation growth of semi-crystalline biopolymers.
The reported method for mulch film preparation is green and recyclable, and, when including a
readily available source of KER, such as by extraction from waste chicken feathers, enables
conversion to organic biofertiliser. The findings of this study contributed to sustainable agriculture
by providing nutrients that enhance the growth speed of the plant, and hence food production, and
reduce environmental pressure. Inclusion of GCC additionally provides not only Ca2+ for plant
consumption but also soil pH control.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Twenty-fourth Annual Conference YUCOMAT 2023, Herceg Novi, Montenegro, September 4 - 8, 2023",
title = "Biodegradable mulch films obtained from unique combinations of cellulose, polycaprolactone, keratin and calcium carbonate",
pages = "135",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6820"
}

Ivanovska, A., Stojanović, D., Barać, N., Dimić-Mišić, K., Kostić, M., Radojević, V., Uskoković, P., Janaćković, Đ., Barcelo, E.,& Gane, P.. (2023). Biodegradable mulch films obtained from unique combinations of cellulose, polycaprolactone, keratin and calcium carbonate. in Programme and The Book of Abstracts / Twenty-fourth Annual Conference YUCOMAT 2023, Herceg Novi, Montenegro, September 4 - 8, 2023
Belgrade : Materials Research Society of Serbia., 135.
https://hdl.handle.net/21.15107/rcub_technorep_6820

Ivanovska A, Stojanović D, Barać N, Dimić-Mišić K, Kostić M, Radojević V, Uskoković P, Janaćković Đ, Barcelo E, Gane P. Biodegradable mulch films obtained from unique combinations of cellulose, polycaprolactone, keratin and calcium carbonate. in Programme and The Book of Abstracts / Twenty-fourth Annual Conference YUCOMAT 2023, Herceg Novi, Montenegro, September 4 - 8, 2023. 2023;:135.
https://hdl.handle.net/21.15107/rcub_technorep_6820 .

Ivanovska, Aleksandra, Stojanović, Dušica, Barać, Nemanja, Dimić-Mišić, Katarina, Kostić, Mirjana, Radojević, Vesna, Uskoković, Petar, Janaćković, Đorđe, Barcelo, Ernesto, Gane, Patrick, "Biodegradable mulch films obtained from unique combinations of cellulose, polycaprolactone, keratin and calcium carbonate" in Programme and The Book of Abstracts / Twenty-fourth Annual Conference YUCOMAT 2023, Herceg Novi, Montenegro, September 4 - 8, 2023 (2023):135,
https://hdl.handle.net/21.15107/rcub_technorep_6820 .

TY  - CONF
AU  - Kostić, Mirjana
AU  - Janaćković, Đorđe
AU  - Uskoković, Petar
AU  - Gane, Patrick
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6845
AB  - Cellulose as the most abundant natural polymer holds great potential as a raw material for the preparation of both sustainable and economically viable polymeric products hitherto predominantly produced from synthetic fossil-based polymers. However, the utilization of cellulose to its full potential is constrained by its recalcitrance to chemical processing. Prior to processing and conversion into valuable products, cellulose needs to be dissolved and then regenerated via an efficient, energy-saving, and environmentally benign route. In the late 1990s, ionic liquids (ILs)have been re-discovered as the most promising cellulose solvents. The application of these novel, green solvents is discussed in detail. The subsequent regeneration of cellulose solutions from these solvents into various products such as fibers, films, membranes, beads, aerogels, hydrogels, and composites including all-cellulose composites, as well as their application in biomedicine, sorption, agriculture, packaging, and thermal insulation, have been reviewed. The properties of the regenerated cellulose material can be additionally tuned by the proper choice of the experimental conditions such as temperature and polarity of the coagulation medium. Furthermore, recycling and converting waste paper and cardboard into high-value materials have been discussed. The recyclability of ILs is one of the challenges to making the process cost-effective and environmentally benignthat scientists and technologists dealing with cellulose processing need to solve.
AB  - Celuloza kao najzastupljeniji prirodni polimer ima veliki potencijal kao sirovina za proizvodnju kako održivih tako i ekonomski isplativih polimernih proizvoda koji su se do sada pretežno proizvodili od sintetičkih polimera na bazi petrohemijskih sirovina. Međutim, korišćenje celuloze u njenom punom potencijalu je ograničeno njenom otpornošću na hemijske tretmane. Pre obrade i konverzije u vredne proizvode, celulozu treba rastvoriti, a zatim regenerisati efikasnim, energetski štedljivim i ekološki benignim putem. Krajem 1990-ih, jonske tečnosti (ILs) su ponovo otkrivene kao najperspektivniji rastvarači celuloze. U radu je detaljno razmatrana primena ovih novih, zelenih rastvarača, kao i regeneracija celuloze rastvorene u jonskim tečnostima u različite proizvode kao što su vlakna, filmovi, membrane, sfere, aerogelovi, hidrogelovi i kompoziti, uključujući i kompozite celuloza-celuloza, i primena ovih proizvoda u biomedicini, poljoprivredi, kao sorbenata, ambalažnih i termoizolacionih materijala i sl. Svojstva regenerisanih celuloznih materijala mogu se dodatno podesiti pravilnim izborom eksperimentalnih uslova procesa regeneracije kao što su temperatura i polaritet medijuma za koagulaciju. Nadalje, analizirana je mogućnost recikliranja i pretvaranja starog papira i kartona u materijale visoke vrednosti. Reciklabilnost ILs je jedan od izazova koji naučnici i tehnolozi koji se bave preradom celuloze moraju da reše kako bi se proces učinio isplativim i ekološki benignim.
PB  - Belgrade : Faculty of Technology and Metallurgy University, Center for Pulp, Paper, Packaging and Graphics in Serbia
C3  - Proceedings / XXIV International Symposium in the Field of Pulp, Paper, Packaging and Graphics, Belgrade, June 21st-22nd 2023
T1  - REGENERACIJA CELULOZE IZ RASTVORA JONSKE TEČNOSTI: NOVI PUT VALORIZACIJE ZA POTPUNO ISKORIŠĆENJE CELULOZE
T1  - REGENERATION OF CELLULOSE FROM IONIC LIQUID SOLUTION: A NOVEL VALORIZATION ROUTE FOR FULL POTENTIAL UTILIZATION OF CELLULOSE
EP  - 17
SP  - 11
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6845
ER  - 

@conference{
author = "Kostić, Mirjana and Janaćković, Đorđe and Uskoković, Petar and Gane, Patrick",
year = "2023",
abstract = "Cellulose as the most abundant natural polymer holds great potential as a raw material for the preparation of both sustainable and economically viable polymeric products hitherto predominantly produced from synthetic fossil-based polymers. However, the utilization of cellulose to its full potential is constrained by its recalcitrance to chemical processing. Prior to processing and conversion into valuable products, cellulose needs to be dissolved and then regenerated via an efficient, energy-saving, and environmentally benign route. In the late 1990s, ionic liquids (ILs)have been re-discovered as the most promising cellulose solvents. The application of these novel, green solvents is discussed in detail. The subsequent regeneration of cellulose solutions from these solvents into various products such as fibers, films, membranes, beads, aerogels, hydrogels, and composites including all-cellulose composites, as well as their application in biomedicine, sorption, agriculture, packaging, and thermal insulation, have been reviewed. The properties of the regenerated cellulose material can be additionally tuned by the proper choice of the experimental conditions such as temperature and polarity of the coagulation medium. Furthermore, recycling and converting waste paper and cardboard into high-value materials have been discussed. The recyclability of ILs is one of the challenges to making the process cost-effective and environmentally benignthat scientists and technologists dealing with cellulose processing need to solve., Celuloza kao najzastupljeniji prirodni polimer ima veliki potencijal kao sirovina za proizvodnju kako održivih tako i ekonomski isplativih polimernih proizvoda koji su se do sada pretežno proizvodili od sintetičkih polimera na bazi petrohemijskih sirovina. Međutim, korišćenje celuloze u njenom punom potencijalu je ograničeno njenom otpornošću na hemijske tretmane. Pre obrade i konverzije u vredne proizvode, celulozu treba rastvoriti, a zatim regenerisati efikasnim, energetski štedljivim i ekološki benignim putem. Krajem 1990-ih, jonske tečnosti (ILs) su ponovo otkrivene kao najperspektivniji rastvarači celuloze. U radu je detaljno razmatrana primena ovih novih, zelenih rastvarača, kao i regeneracija celuloze rastvorene u jonskim tečnostima u različite proizvode kao što su vlakna, filmovi, membrane, sfere, aerogelovi, hidrogelovi i kompoziti, uključujući i kompozite celuloza-celuloza, i primena ovih proizvoda u biomedicini, poljoprivredi, kao sorbenata, ambalažnih i termoizolacionih materijala i sl. Svojstva regenerisanih celuloznih materijala mogu se dodatno podesiti pravilnim izborom eksperimentalnih uslova procesa regeneracije kao što su temperatura i polaritet medijuma za koagulaciju. Nadalje, analizirana je mogućnost recikliranja i pretvaranja starog papira i kartona u materijale visoke vrednosti. Reciklabilnost ILs je jedan od izazova koji naučnici i tehnolozi koji se bave preradom celuloze moraju da reše kako bi se proces učinio isplativim i ekološki benignim.",
publisher = "Belgrade : Faculty of Technology and Metallurgy University, Center for Pulp, Paper, Packaging and Graphics in Serbia",
journal = "Proceedings / XXIV International Symposium in the Field of Pulp, Paper, Packaging and Graphics, Belgrade, June 21st-22nd 2023",
title = "REGENERACIJA CELULOZE IZ RASTVORA JONSKE TEČNOSTI: NOVI PUT VALORIZACIJE ZA POTPUNO ISKORIŠĆENJE CELULOZE, REGENERATION OF CELLULOSE FROM IONIC LIQUID SOLUTION: A NOVEL VALORIZATION ROUTE FOR FULL POTENTIAL UTILIZATION OF CELLULOSE",
pages = "17-11",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6845"
}

Kostić, M., Janaćković, Đ., Uskoković, P.,& Gane, P.. (2023). REGENERACIJA CELULOZE IZ RASTVORA JONSKE TEČNOSTI: NOVI PUT VALORIZACIJE ZA POTPUNO ISKORIŠĆENJE CELULOZE. in Proceedings / XXIV International Symposium in the Field of Pulp, Paper, Packaging and Graphics, Belgrade, June 21st-22nd 2023
Belgrade : Faculty of Technology and Metallurgy University, Center for Pulp, Paper, Packaging and Graphics in Serbia., 11-17.
https://hdl.handle.net/21.15107/rcub_technorep_6845

Kostić M, Janaćković Đ, Uskoković P, Gane P. REGENERACIJA CELULOZE IZ RASTVORA JONSKE TEČNOSTI: NOVI PUT VALORIZACIJE ZA POTPUNO ISKORIŠĆENJE CELULOZE. in Proceedings / XXIV International Symposium in the Field of Pulp, Paper, Packaging and Graphics, Belgrade, June 21st-22nd 2023. 2023;:11-17.
https://hdl.handle.net/21.15107/rcub_technorep_6845 .

Kostić, Mirjana, Janaćković, Đorđe, Uskoković, Petar, Gane, Patrick, "REGENERACIJA CELULOZE IZ RASTVORA JONSKE TEČNOSTI: NOVI PUT VALORIZACIJE ZA POTPUNO ISKORIŠĆENJE CELULOZE" in Proceedings / XXIV International Symposium in the Field of Pulp, Paper, Packaging and Graphics, Belgrade, June 21st-22nd 2023 (2023):11-17,
https://hdl.handle.net/21.15107/rcub_technorep_6845 .

TY  - CONF
AU  - Kostić, Mirjana
AU  - Janaćković, Đorđe
AU  - Uskoković, Petar
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6996
AB  - Ogromne količine celuloznog otpada (tekstila, papira i kartona), pri čemu se većina spaljuje ili završava na deponijama, dovode do ozbiljnog zagađenja životne sredine i značajnog rasipanja prirodnih resursa. Stoga je neophodna reciklaža/konverzija ovog celuloznog otpada u proizvode sa dodatom vrednošću. U tom kontekstu, celulozu treba rastvoriti i zatim regenerisati u različite proizvode (vlakna, filmove, membrane, mikro i nano sfere, aerogelove, hidrogelove i kompozite, uključujući i kompozite celuloza-celuloza) efikasnim, enegetski štedljivim i ekoliški benignim putem. U radu je analizirana sposobnost jonskih tečnosti da rastvaraju celulozu i naknadna regeneracija celuloze iz ovih rastvora u različite proizvode, kao i primena ovih proizvoda.
AB  - Huge production of cellulose wastes (textiles, paper and cardboard) with most of them incinerated and landfilled, leads to seriously environmental pollution and significant waste of natural resources. Hence, recycling/conversion of these cellulose wastes into value-added products is urgent. In this context, cellulose needs to be dissolved and then regenerated into various products (fibers, films, membranes, beads, aerogels, hydrogels, and composites including all-cellulose composites) via en efficient, energy-saving, and environmentally benign route. The ability if ionic liquids to dissolve cellulose and the subsequent regeration of cellulose from these solutions into various products, as well as their application have been discussed.
PB  - Beograd : Savez inženjera i tehničara Srbije
C3  - Zbornik radova / Naučna konferencija sa međunarodnim učešćem Industrija 4.0 u cirkularnoj ekonomiji i zaštiti i oporavku životne sredine, Beograd, 15. decembar 2023
T1  - Upotreba jonskih tečnosti za rastvaranje celuloze: Održiva valorizacija celuloznog otpada
T1  - Use of ionic liquids in cellulose dissolution: Sustainable cellulose waste valorization
EP  - 37
SP  - 28
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6996
ER  - 

@conference{
author = "Kostić, Mirjana and Janaćković, Đorđe and Uskoković, Petar",
year = "2023",
abstract = "Ogromne količine celuloznog otpada (tekstila, papira i kartona), pri čemu se većina spaljuje ili završava na deponijama, dovode do ozbiljnog zagađenja životne sredine i značajnog rasipanja prirodnih resursa. Stoga je neophodna reciklaža/konverzija ovog celuloznog otpada u proizvode sa dodatom vrednošću. U tom kontekstu, celulozu treba rastvoriti i zatim regenerisati u različite proizvode (vlakna, filmove, membrane, mikro i nano sfere, aerogelove, hidrogelove i kompozite, uključujući i kompozite celuloza-celuloza) efikasnim, enegetski štedljivim i ekoliški benignim putem. U radu je analizirana sposobnost jonskih tečnosti da rastvaraju celulozu i naknadna regeneracija celuloze iz ovih rastvora u različite proizvode, kao i primena ovih proizvoda., Huge production of cellulose wastes (textiles, paper and cardboard) with most of them incinerated and landfilled, leads to seriously environmental pollution and significant waste of natural resources. Hence, recycling/conversion of these cellulose wastes into value-added products is urgent. In this context, cellulose needs to be dissolved and then regenerated into various products (fibers, films, membranes, beads, aerogels, hydrogels, and composites including all-cellulose composites) via en efficient, energy-saving, and environmentally benign route. The ability if ionic liquids to dissolve cellulose and the subsequent regeration of cellulose from these solutions into various products, as well as their application have been discussed.",
publisher = "Beograd : Savez inženjera i tehničara Srbije",
journal = "Zbornik radova / Naučna konferencija sa međunarodnim učešćem Industrija 4.0 u cirkularnoj ekonomiji i zaštiti i oporavku životne sredine, Beograd, 15. decembar 2023",
title = "Upotreba jonskih tečnosti za rastvaranje celuloze: Održiva valorizacija celuloznog otpada, Use of ionic liquids in cellulose dissolution: Sustainable cellulose waste valorization",
pages = "37-28",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6996"
}

Kostić, M., Janaćković, Đ.,& Uskoković, P.. (2023). Upotreba jonskih tečnosti za rastvaranje celuloze: Održiva valorizacija celuloznog otpada. in Zbornik radova / Naučna konferencija sa međunarodnim učešćem Industrija 4.0 u cirkularnoj ekonomiji i zaštiti i oporavku životne sredine, Beograd, 15. decembar 2023
Beograd : Savez inženjera i tehničara Srbije., 28-37.
https://hdl.handle.net/21.15107/rcub_technorep_6996

Kostić M, Janaćković Đ, Uskoković P. Upotreba jonskih tečnosti za rastvaranje celuloze: Održiva valorizacija celuloznog otpada. in Zbornik radova / Naučna konferencija sa međunarodnim učešćem Industrija 4.0 u cirkularnoj ekonomiji i zaštiti i oporavku životne sredine, Beograd, 15. decembar 2023. 2023;:28-37.
https://hdl.handle.net/21.15107/rcub_technorep_6996 .

Kostić, Mirjana, Janaćković, Đorđe, Uskoković, Petar, "Upotreba jonskih tečnosti za rastvaranje celuloze: Održiva valorizacija celuloznog otpada" in Zbornik radova / Naučna konferencija sa međunarodnim učešćem Industrija 4.0 u cirkularnoj ekonomiji i zaštiti i oporavku životne sredine, Beograd, 15. decembar 2023 (2023):28-37,
https://hdl.handle.net/21.15107/rcub_technorep_6996 .

TY  - JOUR
AU  - Dimić-Mišić, Katarina
AU  - Imani, Monireh
AU  - Barać, Nemanja
AU  - Janaćković, Đorđe
AU  - Uskoković, Petar
AU  - Barcelo, Ernest
AU  - Gane, Patrick
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6028
AB  - Unlike established coating formulations, functional particulate coatings often demand the omission of polymer dispersant so as to retain surface functionality. This results in heterogeneous complex rheology. We take an example from a novel development for an NOx mitigation surface flow filter system, in which ground calcium carbonate (GCC), applied in a coating, reacts with NO2 releasing CO2. Inclusion of mesoporous ancillary mineral acts to capture the CO2. The coating is applied as droplets to maximize gas-contact dynamic by forming a pixelated 2D array using a coating device consisting of protruding pins, which are loaded by submersion in the aqueous coating color such that the adhering droplets are transferred onto the substrate. The flow is driven by surface meniscus wetting causing lateral spread and bulk pore permeation. Filamentation occurs during the retraction of the pins. Stress-related viscoelastic and induced dilatancy in the suspension containing the ancillary mesoporous mineral disrupts processability. Adopting shear, oscillation and extensional rheometric methods, we show that the inclusion of an ancillary mineral that alone absorbs water, e.g., perlite (a naturally occurring porous volcanic glass), is rheologically preferable to one that in addition to absorbing water also immobilizes it on the mineral surface, e.g., sepiolite. When including micro-nanofibrillated cellulose (MNFC), critical for maintaining moisture to support NO2 sorption, it is observed that it acts also as a flow modifier, enabling uniform coating transfer to be achieved, thus eliminating any possible detrimental effect on mineral surface activity by avoiding the use of soluble polymeric dispersant.
PB  - MDPI
T2  - Materials
T1  - Micro Nanofibrillated Cellulose as Functional Additive Supporting Processability of Surface-Active Mineral Suspensions: Exemplified by Pixel Coating of an NOx-Sorbent Layer
IS  - 4
SP  - 1598
VL  - 16
DO  - 10.3390/ma16041598
ER  - 

@article{
author = "Dimić-Mišić, Katarina and Imani, Monireh and Barać, Nemanja and Janaćković, Đorđe and Uskoković, Petar and Barcelo, Ernest and Gane, Patrick",
year = "2023",
abstract = "Unlike established coating formulations, functional particulate coatings often demand the omission of polymer dispersant so as to retain surface functionality. This results in heterogeneous complex rheology. We take an example from a novel development for an NOx mitigation surface flow filter system, in which ground calcium carbonate (GCC), applied in a coating, reacts with NO2 releasing CO2. Inclusion of mesoporous ancillary mineral acts to capture the CO2. The coating is applied as droplets to maximize gas-contact dynamic by forming a pixelated 2D array using a coating device consisting of protruding pins, which are loaded by submersion in the aqueous coating color such that the adhering droplets are transferred onto the substrate. The flow is driven by surface meniscus wetting causing lateral spread and bulk pore permeation. Filamentation occurs during the retraction of the pins. Stress-related viscoelastic and induced dilatancy in the suspension containing the ancillary mesoporous mineral disrupts processability. Adopting shear, oscillation and extensional rheometric methods, we show that the inclusion of an ancillary mineral that alone absorbs water, e.g., perlite (a naturally occurring porous volcanic glass), is rheologically preferable to one that in addition to absorbing water also immobilizes it on the mineral surface, e.g., sepiolite. When including micro-nanofibrillated cellulose (MNFC), critical for maintaining moisture to support NO2 sorption, it is observed that it acts also as a flow modifier, enabling uniform coating transfer to be achieved, thus eliminating any possible detrimental effect on mineral surface activity by avoiding the use of soluble polymeric dispersant.",
publisher = "MDPI",
journal = "Materials",
title = "Micro Nanofibrillated Cellulose as Functional Additive Supporting Processability of Surface-Active Mineral Suspensions: Exemplified by Pixel Coating of an NOx-Sorbent Layer",
number = "4",
pages = "1598",
volume = "16",
doi = "10.3390/ma16041598"
}

Dimić-Mišić, K., Imani, M., Barać, N., Janaćković, Đ., Uskoković, P., Barcelo, E.,& Gane, P.. (2023). Micro Nanofibrillated Cellulose as Functional Additive Supporting Processability of Surface-Active Mineral Suspensions: Exemplified by Pixel Coating of an NOx-Sorbent Layer. in Materials
MDPI., 16(4), 1598.
https://doi.org/10.3390/ma16041598

Dimić-Mišić K, Imani M, Barać N, Janaćković Đ, Uskoković P, Barcelo E, Gane P. Micro Nanofibrillated Cellulose as Functional Additive Supporting Processability of Surface-Active Mineral Suspensions: Exemplified by Pixel Coating of an NOx-Sorbent Layer. in Materials. 2023;16(4):1598.
doi:10.3390/ma16041598 .

Dimić-Mišić, Katarina, Imani, Monireh, Barać, Nemanja, Janaćković, Đorđe, Uskoković, Petar, Barcelo, Ernest, Gane, Patrick, "Micro Nanofibrillated Cellulose as Functional Additive Supporting Processability of Surface-Active Mineral Suspensions: Exemplified by Pixel Coating of an NOx-Sorbent Layer" in Materials, 16, no. 4 (2023):1598,
https://doi.org/10.3390/ma16041598 . .

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Đokić, Veljko
AU  - Blagojević, Vladimir
AU  - Pavlović, Vera P.
AU  - Ćirković, Jovana
AU  - Horváth, Endre
AU  - Forró, László
AU  - Karoui, Abdennaceur
AU  - Pavlović, Vladimir B.
AU  - Janaćković, Đorđe
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5921
AB  - In this study, we report the influence of vanadium oxide (VO), as a photosensitive component, on the photoactivity of TiO2 nanotubes (TNTs). A series of TNTs of varying tube diameter were synthesized by the anodization of titanium foils at different voltages, while vanadium oxide was deposited on TNTs by wet chemical deposition. An improvement in the optical properties of nanotubes was observed after the deposition of vanadium oxide. An improvement in the optical properties (redshift in UV-Vis spectra) of TNTs and TNT/VO was noted. The photocatalytic activity was improved with increasing tube diameter, while it was weakened after the deposition of VO. Furthermore, photoactivity was investigated in photodiodes based on TNTs or TNT/VO and single crystals of CH3NH3PbI3. The photoelectric measurement revealed that different TNT diameters did not influence the I-V characteristic of the photodiodes, while the deposition of VO improved the photocurrent for smaller TNTs.
PB  - MDPI
T2  - Catalysts
T1  - Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal
IS  - 2
SP  - 352
VL  - 13
DO  - 10.3390/catal13020352
ER  - 

@article{
author = "Vujančević, Jelena and Andričević, Pavao and Đokić, Veljko and Blagojević, Vladimir and Pavlović, Vera P. and Ćirković, Jovana and Horváth, Endre and Forró, László and Karoui, Abdennaceur and Pavlović, Vladimir B. and Janaćković, Đorđe",
year = "2023",
abstract = "In this study, we report the influence of vanadium oxide (VO), as a photosensitive component, on the photoactivity of TiO2 nanotubes (TNTs). A series of TNTs of varying tube diameter were synthesized by the anodization of titanium foils at different voltages, while vanadium oxide was deposited on TNTs by wet chemical deposition. An improvement in the optical properties of nanotubes was observed after the deposition of vanadium oxide. An improvement in the optical properties (redshift in UV-Vis spectra) of TNTs and TNT/VO was noted. The photocatalytic activity was improved with increasing tube diameter, while it was weakened after the deposition of VO. Furthermore, photoactivity was investigated in photodiodes based on TNTs or TNT/VO and single crystals of CH3NH3PbI3. The photoelectric measurement revealed that different TNT diameters did not influence the I-V characteristic of the photodiodes, while the deposition of VO improved the photocurrent for smaller TNTs.",
publisher = "MDPI",
journal = "Catalysts",
title = "Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal",
number = "2",
pages = "352",
volume = "13",
doi = "10.3390/catal13020352"
}

Vujančević, J., Andričević, P., Đokić, V., Blagojević, V., Pavlović, V. P., Ćirković, J., Horváth, E., Forró, L., Karoui, A., Pavlović, V. B.,& Janaćković, Đ.. (2023). Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal. in Catalysts
MDPI., 13(2), 352.
https://doi.org/10.3390/catal13020352

Vujančević J, Andričević P, Đokić V, Blagojević V, Pavlović VP, Ćirković J, Horváth E, Forró L, Karoui A, Pavlović VB, Janaćković Đ. Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal. in Catalysts. 2023;13(2):352.
doi:10.3390/catal13020352 .

Vujančević, Jelena, Andričević, Pavao, Đokić, Veljko, Blagojević, Vladimir, Pavlović, Vera P., Ćirković, Jovana, Horváth, Endre, Forró, László, Karoui, Abdennaceur, Pavlović, Vladimir B., Janaćković, Đorđe, "Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal" in Catalysts, 13, no. 2 (2023):352,
https://doi.org/10.3390/catal13020352 . .

TY  - CONF
AU  - Petrović, Jana
AU  - Barać, Nemanja
AU  - Lazarević, Slavica
AU  - Radovanović, Željko
AU  - Janaćković, Đorđe
AU  - Petrović, Rada
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7485
AB  - Fotokatalizatori za redukciju CrVI sintetisani su deponovanjem nanodestica CdS Vili Cu

na TiOz. Redukcijom Cu'* jona ekstraktom lisca hrasta u prisustvu TiO, sintetisan je Cu-

TiO,,

a Cu-TIO,-CdS reakcijom kadmijum-acetata i tiouree u prisustvu Cu-TiO,.

Redukcija CrVD je ispitivana pod dejstvom simuliranog vidljivog zracenja, na pH-3 i

pH=6. DRS je pokazala da fotokatalizatori apsorbuju u vidljivom delu spektra. Cu-TiO,-CdS pokazuje dve granice apsorpcije, za TiO, i za CdS. Cu-TiO, je imao uzu zabranjenu

zonu u odnosu na TiO, i dodatnu apsorpciju u vidijivoj oblasti. Oba fotokatalizatora, a

posebno Cu-110-Cos, su pokazala znatno vecu efikasnost od cistog 11O≥. Odredivanjem

sadrzaja Cd'* jona u rastvoru i ispitivanjem moguénosti ponovne upotrebe fotokatalizatora,

utureno je da dolazi do korozije Cu-TiO,-CdS pri pH=3. Korozija je znacajno smanjena

pri pH=6, ali je i fotokatalitieka efikasnost bila manja.
AB  - Photocatalysts for the reduction of Cr(VI) were synthesized by depositing CdS and/or Cu nanoparticles on TiO,. Cu-TiO, was synthesized by the reduction of Cu?" ions with oak leaf extract in the presence of TiO,, and Cu-TiO.-CdS by the reaction of cadmium acetate and thiourea in the presence of Cu-TiO,, The reduction of Cr(VI was tested under simulated visible irradiation, at pH-3 or pH-6. DRS has shown that the photocatalysts absorb in the visible part of the spectrum. Cu-TiO,-CdS showed two absorption edges, one for TiO, and the other for CdS. The Cu-TiO, sample had a narrower band gap than TiO, and additional absorption in the visible region. Both photocatalysts, especially Cu-TiO.-CdS" showed significantly higher efficiency than pure TiO,. Based on determining the content of Cd** ions in the solution and examining the possibility of reusing photocatalysts, it was determined that Cu-TiO,-CdS corrosion occurs at pH=3. Corrosion was significantly reduced at pH-6, but the photocatalytic efficiency was also lower.
PB  - Beograd : Srpsko hemijsko društvo = Serbian Chemical Society
C3  - Kratki izvodi radova ; Knjiga radova / 58. savetovanje Srpskog hemijskog društva, Beograd, 9. i 10. jun 2022. godine = Book of Abstracts ; Proceedings = 58th meeting of the Serbian Chemical Society, Belgrade, June 9-10, 2022
T1  - Fotokatalizatori na bazi TiO2 za redukciju Cr(VI)
T1  - Photocatalysts based on TiO2 for the reduction of Cr(VI)
SP  - 106
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7485
ER  - 

@conference{
author = "Petrović, Jana and Barać, Nemanja and Lazarević, Slavica and Radovanović, Željko and Janaćković, Đorđe and Petrović, Rada",
year = "2022",
abstract = "Fotokatalizatori za redukciju CrVI sintetisani su deponovanjem nanodestica CdS Vili Cu

na TiOz. Redukcijom Cu'* jona ekstraktom lisca hrasta u prisustvu TiO, sintetisan je Cu-

TiO,,

a Cu-TIO,-CdS reakcijom kadmijum-acetata i tiouree u prisustvu Cu-TiO,.

Redukcija CrVD je ispitivana pod dejstvom simuliranog vidljivog zracenja, na pH-3 i

pH=6. DRS je pokazala da fotokatalizatori apsorbuju u vidljivom delu spektra. Cu-TiO,-CdS pokazuje dve granice apsorpcije, za TiO, i za CdS. Cu-TiO, je imao uzu zabranjenu

zonu u odnosu na TiO, i dodatnu apsorpciju u vidijivoj oblasti. Oba fotokatalizatora, a

posebno Cu-110-Cos, su pokazala znatno vecu efikasnost od cistog 11O≥. Odredivanjem

sadrzaja Cd'* jona u rastvoru i ispitivanjem moguénosti ponovne upotrebe fotokatalizatora,

utureno je da dolazi do korozije Cu-TiO,-CdS pri pH=3. Korozija je znacajno smanjena

pri pH=6, ali je i fotokatalitieka efikasnost bila manja., Photocatalysts for the reduction of Cr(VI) were synthesized by depositing CdS and/or Cu nanoparticles on TiO,. Cu-TiO, was synthesized by the reduction of Cu?" ions with oak leaf extract in the presence of TiO,, and Cu-TiO.-CdS by the reaction of cadmium acetate and thiourea in the presence of Cu-TiO,, The reduction of Cr(VI was tested under simulated visible irradiation, at pH-3 or pH-6. DRS has shown that the photocatalysts absorb in the visible part of the spectrum. Cu-TiO,-CdS showed two absorption edges, one for TiO, and the other for CdS. The Cu-TiO, sample had a narrower band gap than TiO, and additional absorption in the visible region. Both photocatalysts, especially Cu-TiO.-CdS" showed significantly higher efficiency than pure TiO,. Based on determining the content of Cd** ions in the solution and examining the possibility of reusing photocatalysts, it was determined that Cu-TiO,-CdS corrosion occurs at pH=3. Corrosion was significantly reduced at pH-6, but the photocatalytic efficiency was also lower.",
publisher = "Beograd : Srpsko hemijsko društvo = Serbian Chemical Society",
journal = "Kratki izvodi radova ; Knjiga radova / 58. savetovanje Srpskog hemijskog društva, Beograd, 9. i 10. jun 2022. godine = Book of Abstracts ; Proceedings = 58th meeting of the Serbian Chemical Society, Belgrade, June 9-10, 2022",
title = "Fotokatalizatori na bazi TiO2 za redukciju Cr(VI), Photocatalysts based on TiO2 for the reduction of Cr(VI)",
pages = "106",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7485"
}

Petrović, J., Barać, N., Lazarević, S., Radovanović, Ž., Janaćković, Đ.,& Petrović, R.. (2022). Fotokatalizatori na bazi TiO2 za redukciju Cr(VI). in Kratki izvodi radova ; Knjiga radova / 58. savetovanje Srpskog hemijskog društva, Beograd, 9. i 10. jun 2022. godine = Book of Abstracts ; Proceedings = 58th meeting of the Serbian Chemical Society, Belgrade, June 9-10, 2022
Beograd : Srpsko hemijsko društvo = Serbian Chemical Society., 106.
https://hdl.handle.net/21.15107/rcub_technorep_7485

Petrović J, Barać N, Lazarević S, Radovanović Ž, Janaćković Đ, Petrović R. Fotokatalizatori na bazi TiO2 za redukciju Cr(VI). in Kratki izvodi radova ; Knjiga radova / 58. savetovanje Srpskog hemijskog društva, Beograd, 9. i 10. jun 2022. godine = Book of Abstracts ; Proceedings = 58th meeting of the Serbian Chemical Society, Belgrade, June 9-10, 2022. 2022;:106.
https://hdl.handle.net/21.15107/rcub_technorep_7485 .

Petrović, Jana, Barać, Nemanja, Lazarević, Slavica, Radovanović, Željko, Janaćković, Đorđe, Petrović, Rada, "Fotokatalizatori na bazi TiO2 za redukciju Cr(VI)" in Kratki izvodi radova ; Knjiga radova / 58. savetovanje Srpskog hemijskog društva, Beograd, 9. i 10. jun 2022. godine = Book of Abstracts ; Proceedings = 58th meeting of the Serbian Chemical Society, Belgrade, June 9-10, 2022 (2022):106,
https://hdl.handle.net/21.15107/rcub_technorep_7485 .

TY  - CONF
AU  - Petrović, Jana
AU  - Lazarević, Slavica
AU  - Barać, Nemanja
AU  - Ugrinović, Vukašin
AU  - Janaćković, Đorđe
AU  - Petrović, Rada
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7483
AB  - In the field of photocatalysis, various semiconductor materials have been widely used, precisely because of their electronic structure, which allows them to operate under the different types of irradiations. Titanium dioxide, TiO2, is the most widely used photocatalyst due to its biological and chemical inertness, non-toxicity, availability and affordability. Nevertheless, the inefficient utilization of visible light and high recombination rate of electrons and holes, limit its practicalapplication. Two types of modifications have been used to improve certain properties of TiO2andtake the advantages of the good ones: changing the phase structure, crystallinity, or morphology and combining with various ions, noble metals, semiconductors or other materials by doping, deposition, or sensitization [1,2]. In this work, sol-gel synthesized TiO2 [3] was modified by depositing carbon quantum dots (CQD) and/or cadmium sulfide, CdS, in order to form heterojunctions and so-called"Z" scheme [4]. CQDs were deposited by decomposition of citric acid in hydrothermal conditions (sample CQD-TiO2), and CdS by thermal decomposition of thiourea in the presence of cadmium acetate (samples CQD-TiO2 and CQD-TiO2-CdS). ...
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program and Book of Abstracts / Second International Conference ELMINA Electron Microscopy of Nanostructures 2022, Belgrade, Serbia, August 22nd-26th, 2022
T1  - Carbon quantum dots-assisted CdS/TiO2 heterojunction for photocatalytic reduction of hexavalent chromium under visible light
SP  - 196
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7483
ER  - 

@conference{
author = "Petrović, Jana and Lazarević, Slavica and Barać, Nemanja and Ugrinović, Vukašin and Janaćković, Đorđe and Petrović, Rada",
year = "2022",
abstract = "In the field of photocatalysis, various semiconductor materials have been widely used, precisely because of their electronic structure, which allows them to operate under the different types of irradiations. Titanium dioxide, TiO2, is the most widely used photocatalyst due to its biological and chemical inertness, non-toxicity, availability and affordability. Nevertheless, the inefficient utilization of visible light and high recombination rate of electrons and holes, limit its practicalapplication. Two types of modifications have been used to improve certain properties of TiO2andtake the advantages of the good ones: changing the phase structure, crystallinity, or morphology and combining with various ions, noble metals, semiconductors or other materials by doping, deposition, or sensitization [1,2]. In this work, sol-gel synthesized TiO2 [3] was modified by depositing carbon quantum dots (CQD) and/or cadmium sulfide, CdS, in order to form heterojunctions and so-called"Z" scheme [4]. CQDs were deposited by decomposition of citric acid in hydrothermal conditions (sample CQD-TiO2), and CdS by thermal decomposition of thiourea in the presence of cadmium acetate (samples CQD-TiO2 and CQD-TiO2-CdS). ...",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program and Book of Abstracts / Second International Conference ELMINA Electron Microscopy of Nanostructures 2022, Belgrade, Serbia, August 22nd-26th, 2022",
title = "Carbon quantum dots-assisted CdS/TiO2 heterojunction for photocatalytic reduction of hexavalent chromium under visible light",
pages = "196",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7483"
}

Petrović, J., Lazarević, S., Barać, N., Ugrinović, V., Janaćković, Đ.,& Petrović, R.. (2022). Carbon quantum dots-assisted CdS/TiO2 heterojunction for photocatalytic reduction of hexavalent chromium under visible light. in Program and Book of Abstracts / Second International Conference ELMINA Electron Microscopy of Nanostructures 2022, Belgrade, Serbia, August 22nd-26th, 2022
Belgrade : Serbian Academy of Sciences and Arts., 196.
https://hdl.handle.net/21.15107/rcub_technorep_7483

Petrović J, Lazarević S, Barać N, Ugrinović V, Janaćković Đ, Petrović R. Carbon quantum dots-assisted CdS/TiO2 heterojunction for photocatalytic reduction of hexavalent chromium under visible light. in Program and Book of Abstracts / Second International Conference ELMINA Electron Microscopy of Nanostructures 2022, Belgrade, Serbia, August 22nd-26th, 2022. 2022;:196.
https://hdl.handle.net/21.15107/rcub_technorep_7483 .

Petrović, Jana, Lazarević, Slavica, Barać, Nemanja, Ugrinović, Vukašin, Janaćković, Đorđe, Petrović, Rada, "Carbon quantum dots-assisted CdS/TiO2 heterojunction for photocatalytic reduction of hexavalent chromium under visible light" in Program and Book of Abstracts / Second International Conference ELMINA Electron Microscopy of Nanostructures 2022, Belgrade, Serbia, August 22nd-26th, 2022 (2022):196,
https://hdl.handle.net/21.15107/rcub_technorep_7483 .

TY  - CONF
AU  - Petrović, Jana
AU  - Radovanović, Željko
AU  - Lazarević, Slavica
AU  - Janaćković, Đorđe
AU  - Petrović, Rada
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7484
AB  - A potential visible light photocatalyst, metal-free graphitic carbon nitride (g-C3N4) has
attracted great attention as a green photocatalyst due to its simple preparation, high stability,
low cost and medium band gap of about 2,7 eV. Nevertheless, high recombination rate of
electrons and holes and small specific surface area limit its practical application. To improve
certain properties and use the good ones of g-C3N4, different types of modifications have
been used including doping, deposition or sensitization with various ions, noble metals,
semiconductors or other materials. In this work, g-C3N4 was produced from urea by simple
pyrolysis process and was modified by depositing TiO2 and/or carbon quantum dots (CQD)
in order to form heterojunctions, including so-called "Z" scheme. CQDs were deposited by
decomposition of citric acid in hydrothermal conditions (samples CQD-C3N4 and CQDC3N4-TiO2)) and TiO2 by modified sol-gel method (samples C3N4-TiO2 and CQD-C3N4- TiO2). The properties of the obtained photocatalysts were studied by FESEM, FTIR, BET
and DRS analysis. Photocatalytic reduction of Cr(VI) was tested at a constant initial solution
concentration (10 mg/l), at pH=3 or pH=6, under the simulated visible irradiation. The
concentration of Cr(VI) after irradiation was determined by UV-Vis spectroscopy. Obtained
results showed that the modified photocatalysts provided significantly higher photocatalytic
efficiency under the visible light compared to pure g-C3N4.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Twentieth Young Researchers' Conference Materials Science and Engineering, November 30 – December 2, 2022, Belgrade, Serbia
T1  - Heterojunctions based on g-C3N4 for the photocatalytic reduction of Cr(VI)
SP  - 73
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7484
ER  - 

@conference{
author = "Petrović, Jana and Radovanović, Željko and Lazarević, Slavica and Janaćković, Đorđe and Petrović, Rada",
year = "2022",
abstract = "A potential visible light photocatalyst, metal-free graphitic carbon nitride (g-C3N4) has
attracted great attention as a green photocatalyst due to its simple preparation, high stability,
low cost and medium band gap of about 2,7 eV. Nevertheless, high recombination rate of
electrons and holes and small specific surface area limit its practical application. To improve
certain properties and use the good ones of g-C3N4, different types of modifications have
been used including doping, deposition or sensitization with various ions, noble metals,
semiconductors or other materials. In this work, g-C3N4 was produced from urea by simple
pyrolysis process and was modified by depositing TiO2 and/or carbon quantum dots (CQD)
in order to form heterojunctions, including so-called "Z" scheme. CQDs were deposited by
decomposition of citric acid in hydrothermal conditions (samples CQD-C3N4 and CQDC3N4-TiO2)) and TiO2 by modified sol-gel method (samples C3N4-TiO2 and CQD-C3N4- TiO2). The properties of the obtained photocatalysts were studied by FESEM, FTIR, BET
and DRS analysis. Photocatalytic reduction of Cr(VI) was tested at a constant initial solution
concentration (10 mg/l), at pH=3 or pH=6, under the simulated visible irradiation. The
concentration of Cr(VI) after irradiation was determined by UV-Vis spectroscopy. Obtained
results showed that the modified photocatalysts provided significantly higher photocatalytic
efficiency under the visible light compared to pure g-C3N4.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Twentieth Young Researchers' Conference Materials Science and Engineering, November 30 – December 2, 2022, Belgrade, Serbia",
title = "Heterojunctions based on g-C3N4 for the photocatalytic reduction of Cr(VI)",
pages = "73",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7484"
}

Petrović, J., Radovanović, Ž., Lazarević, S., Janaćković, Đ.,& Petrović, R.. (2022). Heterojunctions based on g-C3N4 for the photocatalytic reduction of Cr(VI). in Program and the Book of Abstracts / Twentieth Young Researchers' Conference Materials Science and Engineering, November 30 – December 2, 2022, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 73.
https://hdl.handle.net/21.15107/rcub_technorep_7484

Petrović J, Radovanović Ž, Lazarević S, Janaćković Đ, Petrović R. Heterojunctions based on g-C3N4 for the photocatalytic reduction of Cr(VI). in Program and the Book of Abstracts / Twentieth Young Researchers' Conference Materials Science and Engineering, November 30 – December 2, 2022, Belgrade, Serbia. 2022;:73.
https://hdl.handle.net/21.15107/rcub_technorep_7484 .

Petrović, Jana, Radovanović, Željko, Lazarević, Slavica, Janaćković, Đorđe, Petrović, Rada, "Heterojunctions based on g-C3N4 for the photocatalytic reduction of Cr(VI)" in Program and the Book of Abstracts / Twentieth Young Researchers' Conference Materials Science and Engineering, November 30 – December 2, 2022, Belgrade, Serbia (2022):73,
https://hdl.handle.net/21.15107/rcub_technorep_7484 .

TY  - CONF
AU  - Ugrinović, Vukašin
AU  - Hristara, Veroniki
AU  - Marković, Maja
AU  - Petrović, Predrag
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
AU  - Veljović, Đorđe
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5240
AB  - Hydrogels are three-dimensional hydrophilic networks of polymers capable of retaining large
amounts of water or biological fluids, which makes them attractive for biomedical and
pharmaceutical applications. Although various types of polymers have been investigated as
hydrogels for biomedical purposes, those obtained from natural polymers have intrinsic
advantages as they are abundant, cheap, biocompatible and biodegradable. Gelatin is a natural
polymer that has been applied in biomedicine due to its low price, biocompatibility, and
biodegradability. HPMC, a derivative of cellulose, is a hydrophilic, biodegradable, and
biocompatible polymer. However, natural polymer-based hydrogels have low mechanical
properties and are relatively soluble in physiological conditions, which requires creative crosslinking strategies to improve the functionality of the hydrogels. The citric acid (CA) is an
inexpensive and non-toxic compound that has been proven to be an effective crosslinker for
natural polymers. In addition, the incorporation of bioactive calcium phosphate particles could
further improve mechanical properties and add new functionalities to the hydrogels.
In this work, we present novel composite hydrogels for biomedical applications, based on CAcrosslinked gelatin/HPMC (HPMC-G) matrix and Mg-doped biphasic calcium phosphate filler
(BCP). Firstly, the HPMC-G hydrogels crosslinking conditions were optimized. Different CA
concentrations, curing temperatures (140-180°C) and times (3-9 min) were applied. During the
second step, the optimaly crosslinked HPMC-G hydrogel was incorporated with different amounts
of BCP. BCP was obtained by calcination of Mg-doped hydroxyapatite (HA) powder synthesized
by the hydrothermal method. XRD analysis confirmed that powder was constituted only of HA
and beta-tricalcium phosphate. The obtained composite hydrogels were characterized by
mechanical testing, FTIR, SEM, swelling behavior and drug deliverability.
PB  - Materials Research Society of Serbia, Belgrade, Serbia
C3  - TWENTY THIRD ANNUAL CONFERENCE - YUCOMAT 2022, Herceg Novi, Montenegro
T1  - Composite hydrogels based on gelatin, hydroxypropyl methylcellulose and Mg-doped biphasic calcium phosphate for biomedical applications
UR  - https://hdl.handle.net/21.15107/rcub_technorep_5240
ER  - 

@conference{
author = "Ugrinović, Vukašin and Hristara, Veroniki and Marković, Maja and Petrović, Predrag and Petrović, Rada and Janaćković, Đorđe and Veljović, Đorđe",
year = "2022",
abstract = "Hydrogels are three-dimensional hydrophilic networks of polymers capable of retaining large
amounts of water or biological fluids, which makes them attractive for biomedical and
pharmaceutical applications. Although various types of polymers have been investigated as
hydrogels for biomedical purposes, those obtained from natural polymers have intrinsic
advantages as they are abundant, cheap, biocompatible and biodegradable. Gelatin is a natural
polymer that has been applied in biomedicine due to its low price, biocompatibility, and
biodegradability. HPMC, a derivative of cellulose, is a hydrophilic, biodegradable, and
biocompatible polymer. However, natural polymer-based hydrogels have low mechanical
properties and are relatively soluble in physiological conditions, which requires creative crosslinking strategies to improve the functionality of the hydrogels. The citric acid (CA) is an
inexpensive and non-toxic compound that has been proven to be an effective crosslinker for
natural polymers. In addition, the incorporation of bioactive calcium phosphate particles could
further improve mechanical properties and add new functionalities to the hydrogels.
In this work, we present novel composite hydrogels for biomedical applications, based on CAcrosslinked gelatin/HPMC (HPMC-G) matrix and Mg-doped biphasic calcium phosphate filler
(BCP). Firstly, the HPMC-G hydrogels crosslinking conditions were optimized. Different CA
concentrations, curing temperatures (140-180°C) and times (3-9 min) were applied. During the
second step, the optimaly crosslinked HPMC-G hydrogel was incorporated with different amounts
of BCP. BCP was obtained by calcination of Mg-doped hydroxyapatite (HA) powder synthesized
by the hydrothermal method. XRD analysis confirmed that powder was constituted only of HA
and beta-tricalcium phosphate. The obtained composite hydrogels were characterized by
mechanical testing, FTIR, SEM, swelling behavior and drug deliverability.",
publisher = "Materials Research Society of Serbia, Belgrade, Serbia",
journal = "TWENTY THIRD ANNUAL CONFERENCE - YUCOMAT 2022, Herceg Novi, Montenegro",
title = "Composite hydrogels based on gelatin, hydroxypropyl methylcellulose and Mg-doped biphasic calcium phosphate for biomedical applications",
url = "https://hdl.handle.net/21.15107/rcub_technorep_5240"
}

Ugrinović, V., Hristara, V., Marković, M., Petrović, P., Petrović, R., Janaćković, Đ.,& Veljović, Đ.. (2022). Composite hydrogels based on gelatin, hydroxypropyl methylcellulose and Mg-doped biphasic calcium phosphate for biomedical applications. in TWENTY THIRD ANNUAL CONFERENCE - YUCOMAT 2022, Herceg Novi, Montenegro
Materials Research Society of Serbia, Belgrade, Serbia..
https://hdl.handle.net/21.15107/rcub_technorep_5240

Ugrinović V, Hristara V, Marković M, Petrović P, Petrović R, Janaćković Đ, Veljović Đ. Composite hydrogels based on gelatin, hydroxypropyl methylcellulose and Mg-doped biphasic calcium phosphate for biomedical applications. in TWENTY THIRD ANNUAL CONFERENCE - YUCOMAT 2022, Herceg Novi, Montenegro. 2022;.
https://hdl.handle.net/21.15107/rcub_technorep_5240 .

Ugrinović, Vukašin, Hristara, Veroniki, Marković, Maja, Petrović, Predrag, Petrović, Rada, Janaćković, Đorđe, Veljović, Đorđe, "Composite hydrogels based on gelatin, hydroxypropyl methylcellulose and Mg-doped biphasic calcium phosphate for biomedical applications" in TWENTY THIRD ANNUAL CONFERENCE - YUCOMAT 2022, Herceg Novi, Montenegro (2022),
https://hdl.handle.net/21.15107/rcub_technorep_5240 .

TY  - JOUR
AU  - Stefanović, Milica P.
AU  - Vujančević, Jelena D.
AU  - Petrović, Rada P.
AU  - Stevanović, Marija S.
AU  - Janaćković, Đorđe T.
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5274
AB  - Organsko-neorganski perovskiti su privukli veliku pažnju istraživača zbog visoke apsorpcije u vidljivom
delu spektra i jeftine proizvodnje. Apsorbovanjem svetlosti dolazi do stvaranja para elektron-šupljina.
U cilju razdvajanja nosilaca naelektrisanja, perovskit se kombinuje sa TiO2 što ima za posledicu
spontani prelazak elektrona sa perovskita na TiO2. Ovo istraživanje je imalo za cilj povećanje dodirne
površine između nanocevi TiO2 i perovskita punjenjem nanocevi perovskitnim materijalom. Rastvor
metilamonijum olovo(II)-bromidnog perovskita (CH3NH3PbBr3) u dimetilformamidu (DMF) je
deponovan na anodizacijom sintetisane TiO2 nanocevi pomoću sistema visokog vakuuma i inertnog
gasa. Postupak je uključivao degazaciju uzorka u visokom vakuumu u trajanju od 3 h na 200 °C, hlađenje
uzorka, a zatim nanošenje rastvora CH3NH3PbBr3 u DMF-u, uz naknadni tretman inertnim gasom (N2)
u cilju ostvarenja natpritiska, što je omogućilo punjenje nanocevi perovskitnim materijalom. Difuznorefleksiona spektroskopija pokazala je da taloženje CH3NH3PbBr3 poboljšava apsorpciona svojstva
TiO2 nanocevi. I-V karakteristike uzorka pokazale su fotodiodno ponašanje i histerezisnu krivu, koja je
karakteristična za perovskitni materijal. Vrednost struje uzorka snimljenim pod vidljivom svetlošću
iznosila je 46 μA bez primene prednapona, dok je nakon primene prednapona iznosila 76 μA. Rezultati
rada ukazuju da je napravljena perovskitna fotodioda sa povećanim kontaktom između TiO2 i perovskita,
koja predstavlja osnovu za buduću konstrukciju solarnih ćelija.
AB  - Organic-inorganic perovskites have attracted much attention from researchers due to their high absorption in the visible part of the spectrum and low-cost fabrication. After absorption of the light, electron-hole pairs are formed. To separate electron-hole pairs and reduce recombination, perovskite is combined with TiO2 which has as a consequence, a spontaneous transition of electrons from perovskite to TiO2. This research aims to increase the contact surface of perovskite and TiO2 nanotubes by filling the nanotubes with perovskite material. The solution of methylammonium lead bromide perovskite (CH3NH3PbBr3) in dimethylformamide (DMF) was deposited on anodically synthesized TiO2 nanotubes by the high vacuum system and inert gas. The procedure involved degassation of the sample under high vacuum for 3 h at 200 °C, cooling of the sample, and putting the solution of CH3NH3PbBr3 in DMF, after which it was treated with inert gas (N2), as an overpressure which enabled the filling of the nanotubes with perovskite material. The diffuse reflectance spectroscopy measurement of the sample proved that deposition of CH3NH3PbBr3 improves the absorption properties of TiO2 nanotubes. The I-V characteristics of the sample showed photodiode behavior and characteristic hysteresis curve for perovskite material. The value of current under visible light for the sample without preconditioning was 46 mA, while after preconditioning value of current was 76 mA. The results indicate that a perovskite photodiode with increased contact between TiO2 and perovskite was made, which is the basis for future solar cell construction.
PB  - Savez inženjera i tehničara Srbije
T2  - Tehnika
T1  - Poboljšanje apsorpcionih svojstava TiO2 nanocevi pomoću CH3NH3PbBr3 perovskita kao fotosenzitivizatora
T1  - Improvement of absorption properties of TiO2 nanotubes by using CH3NH3PbBr3 perovskite as photosensitizer
EP  - 21
IS  - 1
SP  - 15
VL  - 31
DO  - 10.5937/tehnika2201015S
ER  - 

@article{
author = "Stefanović, Milica P. and Vujančević, Jelena D. and Petrović, Rada P. and Stevanović, Marija S. and Janaćković, Đorđe T.",
year = "2022",
abstract = "Organsko-neorganski perovskiti su privukli veliku pažnju istraživača zbog visoke apsorpcije u vidljivom
delu spektra i jeftine proizvodnje. Apsorbovanjem svetlosti dolazi do stvaranja para elektron-šupljina.
U cilju razdvajanja nosilaca naelektrisanja, perovskit se kombinuje sa TiO2 što ima za posledicu
spontani prelazak elektrona sa perovskita na TiO2. Ovo istraživanje je imalo za cilj povećanje dodirne
površine između nanocevi TiO2 i perovskita punjenjem nanocevi perovskitnim materijalom. Rastvor
metilamonijum olovo(II)-bromidnog perovskita (CH3NH3PbBr3) u dimetilformamidu (DMF) je
deponovan na anodizacijom sintetisane TiO2 nanocevi pomoću sistema visokog vakuuma i inertnog
gasa. Postupak je uključivao degazaciju uzorka u visokom vakuumu u trajanju od 3 h na 200 °C, hlađenje
uzorka, a zatim nanošenje rastvora CH3NH3PbBr3 u DMF-u, uz naknadni tretman inertnim gasom (N2)
u cilju ostvarenja natpritiska, što je omogućilo punjenje nanocevi perovskitnim materijalom. Difuznorefleksiona spektroskopija pokazala je da taloženje CH3NH3PbBr3 poboljšava apsorpciona svojstva
TiO2 nanocevi. I-V karakteristike uzorka pokazale su fotodiodno ponašanje i histerezisnu krivu, koja je
karakteristična za perovskitni materijal. Vrednost struje uzorka snimljenim pod vidljivom svetlošću
iznosila je 46 μA bez primene prednapona, dok je nakon primene prednapona iznosila 76 μA. Rezultati
rada ukazuju da je napravljena perovskitna fotodioda sa povećanim kontaktom između TiO2 i perovskita,
koja predstavlja osnovu za buduću konstrukciju solarnih ćelija., Organic-inorganic perovskites have attracted much attention from researchers due to their high absorption in the visible part of the spectrum and low-cost fabrication. After absorption of the light, electron-hole pairs are formed. To separate electron-hole pairs and reduce recombination, perovskite is combined with TiO2 which has as a consequence, a spontaneous transition of electrons from perovskite to TiO2. This research aims to increase the contact surface of perovskite and TiO2 nanotubes by filling the nanotubes with perovskite material. The solution of methylammonium lead bromide perovskite (CH3NH3PbBr3) in dimethylformamide (DMF) was deposited on anodically synthesized TiO2 nanotubes by the high vacuum system and inert gas. The procedure involved degassation of the sample under high vacuum for 3 h at 200 °C, cooling of the sample, and putting the solution of CH3NH3PbBr3 in DMF, after which it was treated with inert gas (N2), as an overpressure which enabled the filling of the nanotubes with perovskite material. The diffuse reflectance spectroscopy measurement of the sample proved that deposition of CH3NH3PbBr3 improves the absorption properties of TiO2 nanotubes. The I-V characteristics of the sample showed photodiode behavior and characteristic hysteresis curve for perovskite material. The value of current under visible light for the sample without preconditioning was 46 mA, while after preconditioning value of current was 76 mA. The results indicate that a perovskite photodiode with increased contact between TiO2 and perovskite was made, which is the basis for future solar cell construction.",
publisher = "Savez inženjera i tehničara Srbije",
journal = "Tehnika",
title = "Poboljšanje apsorpcionih svojstava TiO2 nanocevi pomoću CH3NH3PbBr3 perovskita kao fotosenzitivizatora, Improvement of absorption properties of TiO2 nanotubes by using CH3NH3PbBr3 perovskite as photosensitizer",
pages = "21-15",
number = "1",
volume = "31",
doi = "10.5937/tehnika2201015S"
}

Stefanović, M. P., Vujančević, J. D., Petrović, R. P., Stevanović, M. S.,& Janaćković, Đ. T.. (2022). Poboljšanje apsorpcionih svojstava TiO2 nanocevi pomoću CH3NH3PbBr3 perovskita kao fotosenzitivizatora. in Tehnika
Savez inženjera i tehničara Srbije., 31(1), 15-21.
https://doi.org/10.5937/tehnika2201015S

Stefanović MP, Vujančević JD, Petrović RP, Stevanović MS, Janaćković ĐT. Poboljšanje apsorpcionih svojstava TiO2 nanocevi pomoću CH3NH3PbBr3 perovskita kao fotosenzitivizatora. in Tehnika. 2022;31(1):15-21.
doi:10.5937/tehnika2201015S .

Stefanović, Milica P., Vujančević, Jelena D., Petrović, Rada P., Stevanović, Marija S., Janaćković, Đorđe T., "Poboljšanje apsorpcionih svojstava TiO2 nanocevi pomoću CH3NH3PbBr3 perovskita kao fotosenzitivizatora" in Tehnika, 31, no. 1 (2022):15-21,
https://doi.org/10.5937/tehnika2201015S . .