TY  - JOUR
AU  - Milovanović, Stoja
AU  - Lukić, Ivana
AU  - Krgović, Nemanja
AU  - Tadić, Vanja
AU  - Radovanović, Željko
AU  - Tyśkiewicz, Katarzyna
AU  - Konkol, Marcin
PY  - 2024-04
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7140
AB  - The study aimed toward the development of biocompatible and biodegradable polymeric films (starch-chitosan and starch-chitosan-cyclodextrin) with biologically valuable green tea leaf extract using an environmentally friendly integrated process of supercritical fluid extraction (SFE) and supercritical solvent impregnation (SSI). The SFE-SSI process parameters were selected through the initial estimation of the SFE parameters effect (temperatures 35 and 70 °C and the addition of co-solvents ethanol, ethanol/water, and water). The present early-stage work showed that an increase in temperature increased extraction yield (from 0.9 to 4.2%) and caffeine content while it decreased polyphenolic and pigment content as well as antioxidant activity and extract loading onto films (from 7.1 to 0.1%). The addition of co-solvents to sc-CO2 had an adverse effect on extract yield, composition, and loading. The highest recorded total phenolic, flavonoid, chlorophyll A, and caffeine content in extracts were 136.5 mg GE/g, 22.7 mg RE/g, 8.1 mg/g, and 460.0 mg/g, respectively.
PB  - Elsevier B.V.
T2  - Journal of Supercritical Fluids
T1  - Selection of processing parameters for the integrated supercritical CO2 extraction from green tea leaves and extract impregnation onto starch-chitosan based films
SP  - 106163
VL  - 206
DO  - 10.1016/j.supflu.2023.106163
ER  - 

@article{
author = "Milovanović, Stoja and Lukić, Ivana and Krgović, Nemanja and Tadić, Vanja and Radovanović, Željko and Tyśkiewicz, Katarzyna and Konkol, Marcin",
year = "2024-04",
abstract = "The study aimed toward the development of biocompatible and biodegradable polymeric films (starch-chitosan and starch-chitosan-cyclodextrin) with biologically valuable green tea leaf extract using an environmentally friendly integrated process of supercritical fluid extraction (SFE) and supercritical solvent impregnation (SSI). The SFE-SSI process parameters were selected through the initial estimation of the SFE parameters effect (temperatures 35 and 70 °C and the addition of co-solvents ethanol, ethanol/water, and water). The present early-stage work showed that an increase in temperature increased extraction yield (from 0.9 to 4.2%) and caffeine content while it decreased polyphenolic and pigment content as well as antioxidant activity and extract loading onto films (from 7.1 to 0.1%). The addition of co-solvents to sc-CO2 had an adverse effect on extract yield, composition, and loading. The highest recorded total phenolic, flavonoid, chlorophyll A, and caffeine content in extracts were 136.5 mg GE/g, 22.7 mg RE/g, 8.1 mg/g, and 460.0 mg/g, respectively.",
publisher = "Elsevier B.V.",
journal = "Journal of Supercritical Fluids",
title = "Selection of processing parameters for the integrated supercritical CO2 extraction from green tea leaves and extract impregnation onto starch-chitosan based films",
pages = "106163",
volume = "206",
doi = "10.1016/j.supflu.2023.106163"
}

Milovanović, S., Lukić, I., Krgović, N., Tadić, V., Radovanović, Ž., Tyśkiewicz, K.,& Konkol, M.. (2024-04). Selection of processing parameters for the integrated supercritical CO2 extraction from green tea leaves and extract impregnation onto starch-chitosan based films. in Journal of Supercritical Fluids
Elsevier B.V.., 206, 106163.
https://doi.org/10.1016/j.supflu.2023.106163

Milovanović S, Lukić I, Krgović N, Tadić V, Radovanović Ž, Tyśkiewicz K, Konkol M. Selection of processing parameters for the integrated supercritical CO2 extraction from green tea leaves and extract impregnation onto starch-chitosan based films. in Journal of Supercritical Fluids. 2024;206:106163.
doi:10.1016/j.supflu.2023.106163 .

Milovanović, Stoja, Lukić, Ivana, Krgović, Nemanja, Tadić, Vanja, Radovanović, Željko, Tyśkiewicz, Katarzyna, Konkol, Marcin, "Selection of processing parameters for the integrated supercritical CO2 extraction from green tea leaves and extract impregnation onto starch-chitosan based films" in Journal of Supercritical Fluids, 206 (2024-04):106163,
https://doi.org/10.1016/j.supflu.2023.106163 . .

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  - Omerašević, Mia
AU  - Krsmanović, Miomir
AU  - Radovanović, Željko
AU  - Bučevac, Dušan
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6991
AB  - Anorthite ceramics (CaAl2Si2O8) was obtained by slip casting of water suspension of kaolin (Al2O3·2SiO2·2H2O) and CaCO3 as a source of CaO. A relative density of 87 % of the theoretical density was achieved after a 3-h-long sintering of green samples at 1200 °C. It was found that slip casting allows the fabrication of anorthite with relatively small pores (<8 μm) which was beneficial for achieving a high fracture strength of 129 MPa and good thermal shock resistance. For a quantitative measurement of thermal shock resistance, a critical temperature interval (ΔTc) was determined by a reduction in the mean fracture strength of at least 30 %. The experimentally determined ΔTc of 300 °C was higher than the value calculated by the equation assuming that the thermal stress created during quenching causes the fracture. It was found that the discrepancy between experimental and calculated values of ΔTc could be explained by an introduction of cracks of various sizes by indentation method and careful observation of crack growth initiation after quenching from various temperatures. It is believed that the reason for the discrepancy lies in the different nature of stress that was used in the theoretical calculation and the stress that acts during sample quenching.
PB  - Elsevier Ltd.
T2  - Ceramics International
T1  - Mechanical properties and thermal shock resistance of anorthite ceramics obtained by slip casting
EP  - 5795
IS  - 3
SP  - 5787
VL  - 50
DO  - 10.1016/j.ceramint.2023.11.381
ER  - 

@article{
author = "Omerašević, Mia and Krsmanović, Miomir and Radovanović, Željko and Bučevac, Dušan",
year = "2024",
abstract = "Anorthite ceramics (CaAl2Si2O8) was obtained by slip casting of water suspension of kaolin (Al2O3·2SiO2·2H2O) and CaCO3 as a source of CaO. A relative density of 87 % of the theoretical density was achieved after a 3-h-long sintering of green samples at 1200 °C. It was found that slip casting allows the fabrication of anorthite with relatively small pores (<8 μm) which was beneficial for achieving a high fracture strength of 129 MPa and good thermal shock resistance. For a quantitative measurement of thermal shock resistance, a critical temperature interval (ΔTc) was determined by a reduction in the mean fracture strength of at least 30 %. The experimentally determined ΔTc of 300 °C was higher than the value calculated by the equation assuming that the thermal stress created during quenching causes the fracture. It was found that the discrepancy between experimental and calculated values of ΔTc could be explained by an introduction of cracks of various sizes by indentation method and careful observation of crack growth initiation after quenching from various temperatures. It is believed that the reason for the discrepancy lies in the different nature of stress that was used in the theoretical calculation and the stress that acts during sample quenching.",
publisher = "Elsevier Ltd.",
journal = "Ceramics International",
title = "Mechanical properties and thermal shock resistance of anorthite ceramics obtained by slip casting",
pages = "5795-5787",
number = "3",
volume = "50",
doi = "10.1016/j.ceramint.2023.11.381"
}

Omerašević, M., Krsmanović, M., Radovanović, Ž.,& Bučevac, D.. (2024). Mechanical properties and thermal shock resistance of anorthite ceramics obtained by slip casting. in Ceramics International
Elsevier Ltd.., 50(3), 5787-5795.
https://doi.org/10.1016/j.ceramint.2023.11.381

Omerašević M, Krsmanović M, Radovanović Ž, Bučevac D. Mechanical properties and thermal shock resistance of anorthite ceramics obtained by slip casting. in Ceramics International. 2024;50(3):5787-5795.
doi:10.1016/j.ceramint.2023.11.381 .

Omerašević, Mia, Krsmanović, Miomir, Radovanović, Željko, Bučevac, Dušan, "Mechanical properties and thermal shock resistance of anorthite ceramics obtained by slip casting" in Ceramics International, 50, no. 3 (2024):5787-5795,
https://doi.org/10.1016/j.ceramint.2023.11.381 . .

TY  - CHAP
AU  - Obradović, Vera
AU  - Radovanović, Željko
AU  - Sejkot, Petr
AU  - Machalická, Klára V.
AU  - Vokáč, Miroslav
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7068
AB  - The Kevlar fabric composites have a wide range of applications in the
body armor and lightweight vehicle-armor structures. Nanoparticles are one of the
most common nanofillers for these structures. In this research, the testing specimens have been made from the Kevlar fabrics impregnated with the poly (vinyl
butyral)/ethanol solution which had been reinforced with the ZnO nanoparticles.
The two-layered composite samples have been fabricated by means of hot compression. The immersion of the square Kevlar/PVB specimens for the water uptake
measurements has been performed according to the ISO 62 standard. The specimens have been immersed in a water bath filled with the distilled water (40 °C) in
the period of 8 weeks. The Kevlar/PVB specimens have been tested in accordance
with the ASTM D 3039 standard for the tensile properties and the ASTM D 790–
03 standard for the flexural properties. The tensile and bending characteristics of
the dry specimens have been compared with the ones that had undergone the water
immersion.
PB  - Springer Nature Switzerland
T2  - Modern Building Materials, Structures and Techniques
T1  - Effects of Water Immersion on Mechanical Properties of Kevlar Composites Reinforced with ZnO Nanoparticles
EP  - 277
SP  - 268
VL  - 392
DO  - 10.1007/978-3-031-44603-0_27
ER  - 

@inbook{
author = "Obradović, Vera and Radovanović, Željko and Sejkot, Petr and Machalická, Klára V. and Vokáč, Miroslav",
year = "2024",
abstract = "The Kevlar fabric composites have a wide range of applications in the
body armor and lightweight vehicle-armor structures. Nanoparticles are one of the
most common nanofillers for these structures. In this research, the testing specimens have been made from the Kevlar fabrics impregnated with the poly (vinyl
butyral)/ethanol solution which had been reinforced with the ZnO nanoparticles.
The two-layered composite samples have been fabricated by means of hot compression. The immersion of the square Kevlar/PVB specimens for the water uptake
measurements has been performed according to the ISO 62 standard. The specimens have been immersed in a water bath filled with the distilled water (40 °C) in
the period of 8 weeks. The Kevlar/PVB specimens have been tested in accordance
with the ASTM D 3039 standard for the tensile properties and the ASTM D 790–
03 standard for the flexural properties. The tensile and bending characteristics of
the dry specimens have been compared with the ones that had undergone the water
immersion.",
publisher = "Springer Nature Switzerland",
journal = "Modern Building Materials, Structures and Techniques",
booktitle = "Effects of Water Immersion on Mechanical Properties of Kevlar Composites Reinforced with ZnO Nanoparticles",
pages = "277-268",
volume = "392",
doi = "10.1007/978-3-031-44603-0_27"
}

Obradović, V., Radovanović, Ž., Sejkot, P., Machalická, K. V.,& Vokáč, M.. (2024). Effects of Water Immersion on Mechanical Properties of Kevlar Composites Reinforced with ZnO Nanoparticles. in Modern Building Materials, Structures and Techniques
Springer Nature Switzerland., 392, 268-277.
https://doi.org/10.1007/978-3-031-44603-0_27

Obradović V, Radovanović Ž, Sejkot P, Machalická KV, Vokáč M. Effects of Water Immersion on Mechanical Properties of Kevlar Composites Reinforced with ZnO Nanoparticles. in Modern Building Materials, Structures and Techniques. 2024;392:268-277.
doi:10.1007/978-3-031-44603-0_27 .

Obradović, Vera, Radovanović, Željko, Sejkot, Petr, Machalická, Klára V., Vokáč, Miroslav, "Effects of Water Immersion on Mechanical Properties of Kevlar Composites Reinforced with ZnO Nanoparticles" in Modern Building Materials, Structures and Techniques, 392 (2024):268-277,
https://doi.org/10.1007/978-3-031-44603-0_27 . .

TY  - JOUR
AU  - Lađarević, Jelena
AU  - Radovanović, Lidija
AU  - Božić, Bojan
AU  - Mašulović, Aleksandra
AU  - Lunić, Tanja
AU  - Radovanović, Željko
AU  - Rogan, Jelena
AU  - Mijin, Dušan
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6604
AB  - Two azo dye ligands, bearing different substituents (chlorine atom or methoxy group) in the para-position of the phenyl ring, were employed for the synthesis of two Cu(II) chelates. Full structural affirmation of complexes was assessed. X-ray diffraction measurements revealed that the coordination geometry for Cu atoms in both complexes is square-pyramidal with a ligand:metal ratio of 2:1 where dyes behave as monobasic bidentate ligands. Thermogravimetric analyses of the complexes and their starting dyes were performed to study their thermal stabilities and decomposition behavior confirming the thermal stability of both dyes and complexes. Antioxidative activity of the complexes has been assigned and compared with their parent ligands revealing that the presence of the electron–donor, methoxy group, in the phenyl ring, in both dye and complex, is responsible for the activity (IC50 values of 1.54 for the dye and 1.30 mM for the complex). It should be stated that the complexation of the methoxy-substituted dye leads to enhanced antioxidative activity concurrent to a standard antioxidant molecule of ascorbic acid, making this molecule a promising antioxidant agent. Docking study with vascular endothelial growth factor receptor 2 and Aurora kinase A proteins indicate that complexes exhibit higher binding affinities to proteins than the starting ligand dyes. The most promising structure exhibiting the best docking potential toward both proteins is the complex-bearing methoxy group. The presented results represent a promising start for further investigations of these compounds as potential therapeutic candidates for the treatment of various types of cancer.
PB  - John Wiley and Sons Ltd.
T2  - Applied Organometallic Chemistry
T1  - New copper (II) complexes derived from azo pyridone dyes: Structure characterization, thermal properties, and molecular docking studies
IS  - 10
SP  - e7219
VL  - 37
DO  - 10.1002/aoc.7219
ER  - 

@article{
author = "Lađarević, Jelena and Radovanović, Lidija and Božić, Bojan and Mašulović, Aleksandra and Lunić, Tanja and Radovanović, Željko and Rogan, Jelena and Mijin, Dušan",
year = "2023",
abstract = "Two azo dye ligands, bearing different substituents (chlorine atom or methoxy group) in the para-position of the phenyl ring, were employed for the synthesis of two Cu(II) chelates. Full structural affirmation of complexes was assessed. X-ray diffraction measurements revealed that the coordination geometry for Cu atoms in both complexes is square-pyramidal with a ligand:metal ratio of 2:1 where dyes behave as monobasic bidentate ligands. Thermogravimetric analyses of the complexes and their starting dyes were performed to study their thermal stabilities and decomposition behavior confirming the thermal stability of both dyes and complexes. Antioxidative activity of the complexes has been assigned and compared with their parent ligands revealing that the presence of the electron–donor, methoxy group, in the phenyl ring, in both dye and complex, is responsible for the activity (IC50 values of 1.54 for the dye and 1.30 mM for the complex). It should be stated that the complexation of the methoxy-substituted dye leads to enhanced antioxidative activity concurrent to a standard antioxidant molecule of ascorbic acid, making this molecule a promising antioxidant agent. Docking study with vascular endothelial growth factor receptor 2 and Aurora kinase A proteins indicate that complexes exhibit higher binding affinities to proteins than the starting ligand dyes. The most promising structure exhibiting the best docking potential toward both proteins is the complex-bearing methoxy group. The presented results represent a promising start for further investigations of these compounds as potential therapeutic candidates for the treatment of various types of cancer.",
publisher = "John Wiley and Sons Ltd.",
journal = "Applied Organometallic Chemistry",
title = "New copper (II) complexes derived from azo pyridone dyes: Structure characterization, thermal properties, and molecular docking studies",
number = "10",
pages = "e7219",
volume = "37",
doi = "10.1002/aoc.7219"
}

Lađarević, J., Radovanović, L., Božić, B., Mašulović, A., Lunić, T., Radovanović, Ž., Rogan, J.,& Mijin, D.. (2023). New copper (II) complexes derived from azo pyridone dyes: Structure characterization, thermal properties, and molecular docking studies. in Applied Organometallic Chemistry
John Wiley and Sons Ltd.., 37(10), e7219.
https://doi.org/10.1002/aoc.7219

Lađarević J, Radovanović L, Božić B, Mašulović A, Lunić T, Radovanović Ž, Rogan J, Mijin D. New copper (II) complexes derived from azo pyridone dyes: Structure characterization, thermal properties, and molecular docking studies. in Applied Organometallic Chemistry. 2023;37(10):e7219.
doi:10.1002/aoc.7219 .

Lađarević, Jelena, Radovanović, Lidija, Božić, Bojan, Mašulović, Aleksandra, Lunić, Tanja, Radovanović, Željko, Rogan, Jelena, Mijin, Dušan, "New copper (II) complexes derived from azo pyridone dyes: Structure characterization, thermal properties, and molecular docking studies" in Applied Organometallic Chemistry, 37, no. 10 (2023):e7219,
https://doi.org/10.1002/aoc.7219 . .

TY  - JOUR
AU  - Alazreg, Asma
AU  - Vuksanović, Marija M.
AU  - Egelja, Adela
AU  - Mladenović, Ivana O.
AU  - Radovanović, Željko
AU  - Petrović, Miloš
AU  - Marinković, Aleksandar
AU  - Jančić Heinemann, Radmila
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6589
AB  - Acrylate polymers are used in several applications such as dentistry, medicine, and industry. The modification of their properties using the reinforcement is of key importance for the possible applications. Layered double hydroxides are materials that are easily synthesized by several techniques giving the possibility to modulate the chemical composition and morphology of the reinforcement and they consist of a divalent and a trivalent anion hydroxide and the layers can be exfoliated and thus provide a material interesting for composite reinforcement. In this paper, Mn was used as a divalent and Al as a trivalent cation. The obtained particles were used as reinforcement for the preparation of composites in 1, 3, and 5 wt% quantities and prepared samples were compared to the matrix consisting of PMMA. Physical mechanical properties of the sample having the best mechanical properties (with 3 wt% of MnAl-LDH filers) exhibited 6.38% modulus of elasticity, 27% hardness, and 10% tensile strength improved values compared to the clear PMMA matrix. Toughness was lowered in this sort of composite compared to the pure matrix. Highlights: MnAl-LDH-PMMA composites improved modulus, strength, hardness Loss of toughness is tolerable for 3 wt% reinforcement Viscoelastic properties are improved for composites compared to matrix.
PB  - John Wiley and Sons Inc.
T2  - Polymer Composites
T1  - Mechanical properties of acrylate matrix composite reinforced with manganese-aluminum layered double hydroxide
DO  - 10.1002/pc.27597
ER  - 

@article{
author = "Alazreg, Asma and Vuksanović, Marija M. and Egelja, Adela and Mladenović, Ivana O. and Radovanović, Željko and Petrović, Miloš and Marinković, Aleksandar and Jančić Heinemann, Radmila",
year = "2023",
abstract = "Acrylate polymers are used in several applications such as dentistry, medicine, and industry. The modification of their properties using the reinforcement is of key importance for the possible applications. Layered double hydroxides are materials that are easily synthesized by several techniques giving the possibility to modulate the chemical composition and morphology of the reinforcement and they consist of a divalent and a trivalent anion hydroxide and the layers can be exfoliated and thus provide a material interesting for composite reinforcement. In this paper, Mn was used as a divalent and Al as a trivalent cation. The obtained particles were used as reinforcement for the preparation of composites in 1, 3, and 5 wt% quantities and prepared samples were compared to the matrix consisting of PMMA. Physical mechanical properties of the sample having the best mechanical properties (with 3 wt% of MnAl-LDH filers) exhibited 6.38% modulus of elasticity, 27% hardness, and 10% tensile strength improved values compared to the clear PMMA matrix. Toughness was lowered in this sort of composite compared to the pure matrix. Highlights: MnAl-LDH-PMMA composites improved modulus, strength, hardness Loss of toughness is tolerable for 3 wt% reinforcement Viscoelastic properties are improved for composites compared to matrix.",
publisher = "John Wiley and Sons Inc.",
journal = "Polymer Composites",
title = "Mechanical properties of acrylate matrix composite reinforced with manganese-aluminum layered double hydroxide",
doi = "10.1002/pc.27597"
}

Alazreg, A., Vuksanović, M. M., Egelja, A., Mladenović, I. O., Radovanović, Ž., Petrović, M., Marinković, A.,& Jančić Heinemann, R.. (2023). Mechanical properties of acrylate matrix composite reinforced with manganese-aluminum layered double hydroxide. in Polymer Composites
John Wiley and Sons Inc...
https://doi.org/10.1002/pc.27597

Alazreg A, Vuksanović MM, Egelja A, Mladenović IO, Radovanović Ž, Petrović M, Marinković A, Jančić Heinemann R. Mechanical properties of acrylate matrix composite reinforced with manganese-aluminum layered double hydroxide. in Polymer Composites. 2023;.
doi:10.1002/pc.27597 .

Alazreg, Asma, Vuksanović, Marija M., Egelja, Adela, Mladenović, Ivana O., Radovanović, Željko, Petrović, Miloš, Marinković, Aleksandar, Jančić Heinemann, Radmila, "Mechanical properties of acrylate matrix composite reinforced with manganese-aluminum layered double hydroxide" in Polymer Composites (2023),
https://doi.org/10.1002/pc.27597 . .

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  - JOUR
AU  - Janković, Jelena
AU  - Lukić, Jelena
AU  - Kolarski, Dejan
AU  - Veljović, Đorđe
AU  - Radovanović, Željko
AU  - Dimitrijević, Silvana
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6420
AB  - Elemental sulfur (S8) is a corrosive sulfur compound which was found to be extremely reactive to silver, causing intensive silver sulfide (Ag2S) deposition on on-load tap changer (OLTC) contacts in power transformers. A highly selective adsorbent (HSA), called Tesla’Ssorb, for the removal of S8 from mineral insulating oils was prepared from raw material (RM) using the novel procedure. In this study, the adsorption properties of HSA for the removal of S8 from the oil were determined. RM and HSA were characterized using various techniques, such as field-emission scanning electron microscopy (FESEM), energy-dispersive X-ray (EDX), and X-ray diffraction (XRD). The performance of HSA was determined by adsorption equilibrium, thermodynamic, and kinetic study through batch experiments, at various temperatures and initial concentrations of S8. The obtained results were analyzed by Langmuir and Freundlich adsorption isotherms and it was found that equilibrium data were fitted better with the Langmuir isotherm model. The maximum adsorption capacity was 4.84 mg of S8/g of HSA at 353 K. Thermodynamic parameters, such as enthalpy (ΔH°), Gibbs free energy (ΔG°), and entropy (ΔS°), were calculated and it was found that the sorption process was spontaneous (ΔG° < 0) and endothermic in nature (ΔH° > 0). It was found that the adsorption of S8 follows pseudo-second-order kinetic model, and the activation energy indicated the activated chemisorption process.
PB  - MDPI
T2  - Materials
T1  - Isotherm, Thermodynamic and Kinetic Studies of Elemental Sulfur Removal from Mineral Insulating Oils Using Highly Selective Adsorbent
IS  - 9
SP  - 3522
VL  - 16
DO  - 10.3390/ma16093522
ER  - 

@article{
author = "Janković, Jelena and Lukić, Jelena and Kolarski, Dejan and Veljović, Đorđe and Radovanović, Željko and Dimitrijević, Silvana",
year = "2023",
abstract = "Elemental sulfur (S8) is a corrosive sulfur compound which was found to be extremely reactive to silver, causing intensive silver sulfide (Ag2S) deposition on on-load tap changer (OLTC) contacts in power transformers. A highly selective adsorbent (HSA), called Tesla’Ssorb, for the removal of S8 from mineral insulating oils was prepared from raw material (RM) using the novel procedure. In this study, the adsorption properties of HSA for the removal of S8 from the oil were determined. RM and HSA were characterized using various techniques, such as field-emission scanning electron microscopy (FESEM), energy-dispersive X-ray (EDX), and X-ray diffraction (XRD). The performance of HSA was determined by adsorption equilibrium, thermodynamic, and kinetic study through batch experiments, at various temperatures and initial concentrations of S8. The obtained results were analyzed by Langmuir and Freundlich adsorption isotherms and it was found that equilibrium data were fitted better with the Langmuir isotherm model. The maximum adsorption capacity was 4.84 mg of S8/g of HSA at 353 K. Thermodynamic parameters, such as enthalpy (ΔH°), Gibbs free energy (ΔG°), and entropy (ΔS°), were calculated and it was found that the sorption process was spontaneous (ΔG° < 0) and endothermic in nature (ΔH° > 0). It was found that the adsorption of S8 follows pseudo-second-order kinetic model, and the activation energy indicated the activated chemisorption process.",
publisher = "MDPI",
journal = "Materials",
title = "Isotherm, Thermodynamic and Kinetic Studies of Elemental Sulfur Removal from Mineral Insulating Oils Using Highly Selective Adsorbent",
number = "9",
pages = "3522",
volume = "16",
doi = "10.3390/ma16093522"
}

Janković, J., Lukić, J., Kolarski, D., Veljović, Đ., Radovanović, Ž.,& Dimitrijević, S.. (2023). Isotherm, Thermodynamic and Kinetic Studies of Elemental Sulfur Removal from Mineral Insulating Oils Using Highly Selective Adsorbent. in Materials
MDPI., 16(9), 3522.
https://doi.org/10.3390/ma16093522

Janković J, Lukić J, Kolarski D, Veljović Đ, Radovanović Ž, Dimitrijević S. Isotherm, Thermodynamic and Kinetic Studies of Elemental Sulfur Removal from Mineral Insulating Oils Using Highly Selective Adsorbent. in Materials. 2023;16(9):3522.
doi:10.3390/ma16093522 .

Janković, Jelena, Lukić, Jelena, Kolarski, Dejan, Veljović, Đorđe, Radovanović, Željko, Dimitrijević, Silvana, "Isotherm, Thermodynamic and Kinetic Studies of Elemental Sulfur Removal from Mineral Insulating Oils Using Highly Selective Adsorbent" in Materials, 16, no. 9 (2023):3522,
https://doi.org/10.3390/ma16093522 . .

TY  - JOUR
AU  - Radovanović, Lidija
AU  - Radovanović, Željko
AU  - Simović, Bojana
AU  - Vasić, Milica V.
AU  - Balanč, Bojana
AU  - Dapčević, Aleksandra
AU  - Dramićanin, Miroslav D.
AU  - Rogan, Jelena
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5984
AB  - A biphasic [Mn(dipya)(H2O)4](tpht)/{[Zn(dipya)(tpht)]·H2O}n com­plex material, I (dipya = 2,2’-dipyridylamine, tpht2– = dianion of terephthalatic acid) was synthesized by ligand exchange reaction and characterized by XRPD and FTIR spectroscopy. A ZnO/ZnMn2O4 composite, II, has been prepared via thermal decomposition of I in an air atmosphere at 450 °C. XRPD, FTIR and FESEM analyses of II revealed the simultaneous presence of spherical nano­particles of wurtzite ZnO and elongated nanoparticles of spinel ZnMn2O4. The specific surface area of II was determined by the BET method, whereas the volume and average size of the mesopores were calculated in accordance with the BJH method. The measurements of the mean size, polydispersity index and zeta potential showed colloidal instability of II. Two band gap values of 2.4 and 3.3 eV were determined using UV–Vis diffuse reflectance spectroscopy, while the measurements of photoluminescence revealed that II is active in the blue region of the visible spectrum. Testing of composite II as a pigmentary material showed that it can be used for the colouring of a ceramic glaze.
AB  - Двофазни  [Mn(dipya)(H2O)4](tpht)/{[Zn(dipya)(tpht)]·H2O}n комплексни материјал, I,  (dipya  =  2,2’-дипиридиламин,  tpht2–  =  дианјон  1,4-бензендикарбоксилнекиселине) синтетисан је реакцијом измене лиганада и окарактерисан XRPD мeтoдоми FTIR спек-троскопијом. Композит ZnO/ZnMn2O4, II, добијен је термичком разградњом прекурcopa I у атмосфери ваздуха на  450  °C.  XRPD  мeтoдом,  FTIR  спектроскопијом и  FESEM  микроскопијом композита II утврђено је истовремено присуство сферних наночестица ZnO вирцитне структуре и издужених наночестица  ZnMn2O4 са структуром спинела. Специфична површина композита II одређена је BET методом, док су запремина и просечна величина мезопора израчунати у складу са  BJH  методом. Средња величина, индекс полидисперзије и цета потенцијал измерени су фотонском корелационом спектроскопијом и електрофоретским расејањем светлости и показали су нестабилност композита II. Вредности ширине забрањене зоне од  2,4  и  3,3  eV  одређене су  UV–Vis  дифузно-рефлексионом спектроскопијом, док су мерења фотолуминесценције показала да је композит II активан у плавој области видљивог дела спектра. Испитивање композита II као пигментног материјала показало је да се може користити за бојење керамичке глазуре.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Structure and properties of ZnO/ZnMn2O4 composite obtained by thermal decomposition of terephthalate precursor
T1  - Структура и својства композита ZnO/ZnMn2O4 добијеног термичком разградњом терефталат-прекурсора
EP  - 325
IS  - 3
SP  - 313
VL  - 88
DO  - 10.2298/JSC221102090R
ER  - 

@article{
author = "Radovanović, Lidija and Radovanović, Željko and Simović, Bojana and Vasić, Milica V. and Balanč, Bojana and Dapčević, Aleksandra and Dramićanin, Miroslav D. and Rogan, Jelena",
year = "2023",
abstract = "A biphasic [Mn(dipya)(H2O)4](tpht)/{[Zn(dipya)(tpht)]·H2O}n com­plex material, I (dipya = 2,2’-dipyridylamine, tpht2– = dianion of terephthalatic acid) was synthesized by ligand exchange reaction and characterized by XRPD and FTIR spectroscopy. A ZnO/ZnMn2O4 composite, II, has been prepared via thermal decomposition of I in an air atmosphere at 450 °C. XRPD, FTIR and FESEM analyses of II revealed the simultaneous presence of spherical nano­particles of wurtzite ZnO and elongated nanoparticles of spinel ZnMn2O4. The specific surface area of II was determined by the BET method, whereas the volume and average size of the mesopores were calculated in accordance with the BJH method. The measurements of the mean size, polydispersity index and zeta potential showed colloidal instability of II. Two band gap values of 2.4 and 3.3 eV were determined using UV–Vis diffuse reflectance spectroscopy, while the measurements of photoluminescence revealed that II is active in the blue region of the visible spectrum. Testing of composite II as a pigmentary material showed that it can be used for the colouring of a ceramic glaze., Двофазни  [Mn(dipya)(H2O)4](tpht)/{[Zn(dipya)(tpht)]·H2O}n комплексни материјал, I,  (dipya  =  2,2’-дипиридиламин,  tpht2–  =  дианјон  1,4-бензендикарбоксилнекиселине) синтетисан је реакцијом измене лиганада и окарактерисан XRPD мeтoдоми FTIR спек-троскопијом. Композит ZnO/ZnMn2O4, II, добијен је термичком разградњом прекурcopa I у атмосфери ваздуха на  450  °C.  XRPD  мeтoдом,  FTIR  спектроскопијом и  FESEM  микроскопијом композита II утврђено је истовремено присуство сферних наночестица ZnO вирцитне структуре и издужених наночестица  ZnMn2O4 са структуром спинела. Специфична површина композита II одређена је BET методом, док су запремина и просечна величина мезопора израчунати у складу са  BJH  методом. Средња величина, индекс полидисперзије и цета потенцијал измерени су фотонском корелационом спектроскопијом и електрофоретским расејањем светлости и показали су нестабилност композита II. Вредности ширине забрањене зоне од  2,4  и  3,3  eV  одређене су  UV–Vis  дифузно-рефлексионом спектроскопијом, док су мерења фотолуминесценције показала да је композит II активан у плавој области видљивог дела спектра. Испитивање композита II као пигментног материјала показало је да се може користити за бојење керамичке глазуре.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Structure and properties of ZnO/ZnMn2O4 composite obtained by thermal decomposition of terephthalate precursor, Структура и својства композита ZnO/ZnMn2O4 добијеног термичком разградњом терефталат-прекурсора",
pages = "325-313",
number = "3",
volume = "88",
doi = "10.2298/JSC221102090R"
}

Radovanović, L., Radovanović, Ž., Simović, B., Vasić, M. V., Balanč, B., Dapčević, A., Dramićanin, M. D.,& Rogan, J.. (2023). Structure and properties of ZnO/ZnMn2O4 composite obtained by thermal decomposition of terephthalate precursor. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 88(3), 313-325.
https://doi.org/10.2298/JSC221102090R

Radovanović L, Radovanović Ž, Simović B, Vasić MV, Balanč B, Dapčević A, Dramićanin MD, Rogan J. Structure and properties of ZnO/ZnMn2O4 composite obtained by thermal decomposition of terephthalate precursor. in Journal of the Serbian Chemical Society. 2023;88(3):313-325.
doi:10.2298/JSC221102090R .

Radovanović, Lidija, Radovanović, Željko, Simović, Bojana, Vasić, Milica V., Balanč, Bojana, Dapčević, Aleksandra, Dramićanin, Miroslav D., Rogan, Jelena, "Structure and properties of ZnO/ZnMn2O4 composite obtained by thermal decomposition of terephthalate precursor" in Journal of the Serbian Chemical Society, 88, no. 3 (2023):313-325,
https://doi.org/10.2298/JSC221102090R . .

TY  - JOUR
AU  - Simović, Bojana
AU  - Radovanović, Željko
AU  - Branković, Goran
AU  - Dapčević, Aleksandra
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6363
AB  - In this work, in order to improve the photocatalytic efficiency of ZnO, the optimal CeO2 content in ZnO powders was determined by varying the quantity of CeO2 from 0 to 10 mol%. The structural, microstructural, optical, textural, and photocatalytic properties of the hydrothermally obtained ZnO and CeO2/ZnO nanocomposites have been investigated by using the XRPD, FESEM, HRTEM/SAED, BET, and UV–Vis techniques. Detailed characterization revealed that CeO2, having spherical nanodots of about 5 nm with a large surface area, was distributed onto the ZnO surface, whose crystallites displayed a bimodal distribution, from nano-to micro-crystals. The morphology of ZnO is a combination of nanograins and microrods that further makes a 3-D tie-like morphology. The nanocomposite containing 5 mol% of CeO2 showed about 30% better photocatalytic efficiency in the degradation of Reactive Orange 16 dye compared to other samples under simulated solar radiation. In addition, the kinetics and mechanism of photocatalytic degradation were also proposed based on the photocatalytic activity and scavenger tests.
PB  - Elsevier Ltd.
T2  - Materials Science in Semiconductor Processing
T1  - Hydrothermally synthesized CeO2/ZnO nanocomposite photocatalysts for the enhanced degradation of Reactive Orange 16 dye
SP  - 107542
VL  - 162
DO  - 10.1016/j.mssp.2023.107542
ER  - 

@article{
author = "Simović, Bojana and Radovanović, Željko and Branković, Goran and Dapčević, Aleksandra",
year = "2023",
abstract = "In this work, in order to improve the photocatalytic efficiency of ZnO, the optimal CeO2 content in ZnO powders was determined by varying the quantity of CeO2 from 0 to 10 mol%. The structural, microstructural, optical, textural, and photocatalytic properties of the hydrothermally obtained ZnO and CeO2/ZnO nanocomposites have been investigated by using the XRPD, FESEM, HRTEM/SAED, BET, and UV–Vis techniques. Detailed characterization revealed that CeO2, having spherical nanodots of about 5 nm with a large surface area, was distributed onto the ZnO surface, whose crystallites displayed a bimodal distribution, from nano-to micro-crystals. The morphology of ZnO is a combination of nanograins and microrods that further makes a 3-D tie-like morphology. The nanocomposite containing 5 mol% of CeO2 showed about 30% better photocatalytic efficiency in the degradation of Reactive Orange 16 dye compared to other samples under simulated solar radiation. In addition, the kinetics and mechanism of photocatalytic degradation were also proposed based on the photocatalytic activity and scavenger tests.",
publisher = "Elsevier Ltd.",
journal = "Materials Science in Semiconductor Processing",
title = "Hydrothermally synthesized CeO2/ZnO nanocomposite photocatalysts for the enhanced degradation of Reactive Orange 16 dye",
pages = "107542",
volume = "162",
doi = "10.1016/j.mssp.2023.107542"
}

Simović, B., Radovanović, Ž., Branković, G.,& Dapčević, A.. (2023). Hydrothermally synthesized CeO2/ZnO nanocomposite photocatalysts for the enhanced degradation of Reactive Orange 16 dye. in Materials Science in Semiconductor Processing
Elsevier Ltd.., 162, 107542.
https://doi.org/10.1016/j.mssp.2023.107542

Simović B, Radovanović Ž, Branković G, Dapčević A. Hydrothermally synthesized CeO2/ZnO nanocomposite photocatalysts for the enhanced degradation of Reactive Orange 16 dye. in Materials Science in Semiconductor Processing. 2023;162:107542.
doi:10.1016/j.mssp.2023.107542 .

Simović, Bojana, Radovanović, Željko, Branković, Goran, Dapčević, Aleksandra, "Hydrothermally synthesized CeO2/ZnO nanocomposite photocatalysts for the enhanced degradation of Reactive Orange 16 dye" in Materials Science in Semiconductor Processing, 162 (2023):107542,
https://doi.org/10.1016/j.mssp.2023.107542 . .

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  - Baljozović, Andreja
AU  - Glišić, Dragomir
AU  - Radović, Nenad
AU  - Radovanović, Željko
AU  - Baščarević, Zoran
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6592
AB  - The cementless Corail stem is one of the most frequently implanted stems and has undergone several design changes. Currently in use is the third generation, named Corail AMT. Until now, only one third-generation Corail stem neck fracture has been described in 2020. In our paper, we present an almost identical complication with an additional analysis of the fracture using a scanning electron microscope. The revision surgery consisted of changing the broken implant with a Corail revision stem, along with replacing the polyethylene liner and the femoral head with new one, after which the patient achieved a full recovery. According to the available literature, this is the second case of this extremely rare complication.
PB  - Elsevier Inc.
T2  - Arthroplasty Today
T1  - An Extremely Rare Case of Cementless Third Generation Corail Stem Neck Fracture With Fractographic Analysis
SP  - 101176
VL  - 22
DO  - 10.1016/j.artd.2023.101176
ER  - 

@article{
author = "Baljozović, Andreja and Glišić, Dragomir and Radović, Nenad and Radovanović, Željko and Baščarević, Zoran",
year = "2023",
abstract = "The cementless Corail stem is one of the most frequently implanted stems and has undergone several design changes. Currently in use is the third generation, named Corail AMT. Until now, only one third-generation Corail stem neck fracture has been described in 2020. In our paper, we present an almost identical complication with an additional analysis of the fracture using a scanning electron microscope. The revision surgery consisted of changing the broken implant with a Corail revision stem, along with replacing the polyethylene liner and the femoral head with new one, after which the patient achieved a full recovery. According to the available literature, this is the second case of this extremely rare complication.",
publisher = "Elsevier Inc.",
journal = "Arthroplasty Today",
title = "An Extremely Rare Case of Cementless Third Generation Corail Stem Neck Fracture With Fractographic Analysis",
pages = "101176",
volume = "22",
doi = "10.1016/j.artd.2023.101176"
}

Baljozović, A., Glišić, D., Radović, N., Radovanović, Ž.,& Baščarević, Z.. (2023). An Extremely Rare Case of Cementless Third Generation Corail Stem Neck Fracture With Fractographic Analysis. in Arthroplasty Today
Elsevier Inc.., 22, 101176.
https://doi.org/10.1016/j.artd.2023.101176

Baljozović A, Glišić D, Radović N, Radovanović Ž, Baščarević Z. An Extremely Rare Case of Cementless Third Generation Corail Stem Neck Fracture With Fractographic Analysis. in Arthroplasty Today. 2023;22:101176.
doi:10.1016/j.artd.2023.101176 .

Baljozović, Andreja, Glišić, Dragomir, Radović, Nenad, Radovanović, Željko, Baščarević, Zoran, "An Extremely Rare Case of Cementless Third Generation Corail Stem Neck Fracture With Fractographic Analysis" in Arthroplasty Today, 22 (2023):101176,
https://doi.org/10.1016/j.artd.2023.101176 . .

TY  - JOUR
AU  - Ćurčić, Srećko
AU  - Vesović, Nikola
AU  - Vrbica, Maja
AU  - Popović, Slađana
AU  - Radovanović, Željko
AU  - Ćurčić, Nina B.
AU  - Yamashkin, Anatoliy A.
AU  - Radović, Dejan
AU  - Yamashkin, Stanislav A.
AU  - Vranić, Sofija
AU  - Rađa, Tonći
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6648
AB  - Two new subterranean leiodid taxa of the genus Spelaeobates Müller, 1901 from three pits in northern Dalmatia (Croatia), S. coriniensis sp. nov. and S. coriniensis nonveilleri ssp. nov., are described. The morphological traits of the new taxa are enumerated and illustrated. These two taxa are placed in the subgenus Spelaeobates Müller, 1901. The relationships of these two taxa and their close relatives are clarified. Data on the sexual dimorphism of the two new taxa and on the intrasubspecific variability of S. coriniensis nonveilleri ssp. nov. are presented. We also redescribed S. novaki, the type species of both the genus Spelaeobates and the subgenus Spelaeobates and the closest relative of the newly described species. A key for identification of the taxa of the genus Spelaeobates is included. The new taxa are endemic to the Dinaric Alps of Croatia. Spelaeobates (Pretneriella) kraussi Müller, 1903 and S. (P.) pharensis langhofferi Müller, 1931 were found for the first time outside their type locality.
PB  - Pensoft Publishers
T2  - Subterranean Biology
T1  - The surprising discovery of two new subterranean Leptodirini of the genus Spelaeobates Müller, 1901 (Coleoptera, Leiodidae, Cholevinae) from Croatia after more than a century
EP  - 46
SP  - 21
VL  - 46
DO  - 10.3897/subtbiol.46.104548
ER  - 

@article{
author = "Ćurčić, Srećko and Vesović, Nikola and Vrbica, Maja and Popović, Slađana and Radovanović, Željko and Ćurčić, Nina B. and Yamashkin, Anatoliy A. and Radović, Dejan and Yamashkin, Stanislav A. and Vranić, Sofija and Rađa, Tonći",
year = "2023",
abstract = "Two new subterranean leiodid taxa of the genus Spelaeobates Müller, 1901 from three pits in northern Dalmatia (Croatia), S. coriniensis sp. nov. and S. coriniensis nonveilleri ssp. nov., are described. The morphological traits of the new taxa are enumerated and illustrated. These two taxa are placed in the subgenus Spelaeobates Müller, 1901. The relationships of these two taxa and their close relatives are clarified. Data on the sexual dimorphism of the two new taxa and on the intrasubspecific variability of S. coriniensis nonveilleri ssp. nov. are presented. We also redescribed S. novaki, the type species of both the genus Spelaeobates and the subgenus Spelaeobates and the closest relative of the newly described species. A key for identification of the taxa of the genus Spelaeobates is included. The new taxa are endemic to the Dinaric Alps of Croatia. Spelaeobates (Pretneriella) kraussi Müller, 1903 and S. (P.) pharensis langhofferi Müller, 1931 were found for the first time outside their type locality.",
publisher = "Pensoft Publishers",
journal = "Subterranean Biology",
title = "The surprising discovery of two new subterranean Leptodirini of the genus Spelaeobates Müller, 1901 (Coleoptera, Leiodidae, Cholevinae) from Croatia after more than a century",
pages = "46-21",
volume = "46",
doi = "10.3897/subtbiol.46.104548"
}

Ćurčić, S., Vesović, N., Vrbica, M., Popović, S., Radovanović, Ž., Ćurčić, N. B., Yamashkin, A. A., Radović, D., Yamashkin, S. A., Vranić, S.,& Rađa, T.. (2023). The surprising discovery of two new subterranean Leptodirini of the genus Spelaeobates Müller, 1901 (Coleoptera, Leiodidae, Cholevinae) from Croatia after more than a century. in Subterranean Biology
Pensoft Publishers., 46, 21-46.
https://doi.org/10.3897/subtbiol.46.104548

Ćurčić S, Vesović N, Vrbica M, Popović S, Radovanović Ž, Ćurčić NB, Yamashkin AA, Radović D, Yamashkin SA, Vranić S, Rađa T. The surprising discovery of two new subterranean Leptodirini of the genus Spelaeobates Müller, 1901 (Coleoptera, Leiodidae, Cholevinae) from Croatia after more than a century. in Subterranean Biology. 2023;46:21-46.
doi:10.3897/subtbiol.46.104548 .

Ćurčić, Srećko, Vesović, Nikola, Vrbica, Maja, Popović, Slađana, Radovanović, Željko, Ćurčić, Nina B., Yamashkin, Anatoliy A., Radović, Dejan, Yamashkin, Stanislav A., Vranić, Sofija, Rađa, Tonći, "The surprising discovery of two new subterranean Leptodirini of the genus Spelaeobates Müller, 1901 (Coleoptera, Leiodidae, Cholevinae) from Croatia after more than a century" in Subterranean Biology, 46 (2023):21-46,
https://doi.org/10.3897/subtbiol.46.104548 . .

TY  - CONF
AU  - Radovanović, Lidija
AU  - Kremenović, Aleksandar
AU  - Radovanović, Željko
AU  - Rogan, Jelena
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6719
AB  - The increasing interest for nanosized mixed metal oxides such as spinels and
spinel-based materials in last decades has been motivated by their wide applications
in photocatalysis, magnetism or solar cells [1]. So far, those materials have been
obtained by conventional ceramic routes that involved high temperature treatments
of precursors like mixed nitrates, carbonates or hydroxides [1]. An approach based
on thermal degradation of metal-organic coordination compounds has been found as
a promising for the preparation of fine-dispersed spinel and spinel-based oxides,
mostly because of the control over stoichiometry as well as the possibility to obtain
the materials with the homogeneous distribution of metal ions [1].
As a continuation of our research relating to the design and synthesis of metal–
organic coordination compounds with the aim of obtaining possibly new functional
materials [2], herein we present the synthesis and characterization of new Mn(II)–
dipyridylamine coordination compound with tetraanion of 1,2,4,5-
benzenetetracarboxylic (pyromellitic) acid. The complex was used as a single-source
precursor for the preparation of nanosized Mn2O3/Mn3O4, Mn2O3 and Mn3O4 by
direct thermolysis in air atmosphere at 450, 965 and 1200 °C, respectively. The main
goal of this research was to investigate the influence of decomposition temperature
of the precursor on stoichiometry of the resulting nanocrystalline spinel-based
manganese oxides. The structural, morphological and spectroscopic properties of
these ceramic materials were also investigated.
PB  - Belgrade : Institut za multidisciplinarna istraživanja
C3  - Programme and the Book of Abstracts / 6th Conference of The Serbian Society for Ceramic Materials, 6CSCS-2022, June 28-29, 2022, Belgrade, Serbia
T1  - The use of manganese(II)-pyromellitate complex precursor for the synthesis of nanosized manganese oxides
SP  - 60
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6719
ER  - 

@conference{
author = "Radovanović, Lidija and Kremenović, Aleksandar and Radovanović, Željko and Rogan, Jelena",
year = "2022",
abstract = "The increasing interest for nanosized mixed metal oxides such as spinels and
spinel-based materials in last decades has been motivated by their wide applications
in photocatalysis, magnetism or solar cells [1]. So far, those materials have been
obtained by conventional ceramic routes that involved high temperature treatments
of precursors like mixed nitrates, carbonates or hydroxides [1]. An approach based
on thermal degradation of metal-organic coordination compounds has been found as
a promising for the preparation of fine-dispersed spinel and spinel-based oxides,
mostly because of the control over stoichiometry as well as the possibility to obtain
the materials with the homogeneous distribution of metal ions [1].
As a continuation of our research relating to the design and synthesis of metal–
organic coordination compounds with the aim of obtaining possibly new functional
materials [2], herein we present the synthesis and characterization of new Mn(II)–
dipyridylamine coordination compound with tetraanion of 1,2,4,5-
benzenetetracarboxylic (pyromellitic) acid. The complex was used as a single-source
precursor for the preparation of nanosized Mn2O3/Mn3O4, Mn2O3 and Mn3O4 by
direct thermolysis in air atmosphere at 450, 965 and 1200 °C, respectively. The main
goal of this research was to investigate the influence of decomposition temperature
of the precursor on stoichiometry of the resulting nanocrystalline spinel-based
manganese oxides. The structural, morphological and spectroscopic properties of
these ceramic materials were also investigated.",
publisher = "Belgrade : Institut za multidisciplinarna istraživanja",
journal = "Programme and the Book of Abstracts / 6th Conference of The Serbian Society for Ceramic Materials, 6CSCS-2022, June 28-29, 2022, Belgrade, Serbia",
title = "The use of manganese(II)-pyromellitate complex precursor for the synthesis of nanosized manganese oxides",
pages = "60",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6719"
}

Radovanović, L., Kremenović, A., Radovanović, Ž.,& Rogan, J.. (2022). The use of manganese(II)-pyromellitate complex precursor for the synthesis of nanosized manganese oxides. in Programme and the Book of Abstracts / 6th Conference of The Serbian Society for Ceramic Materials, 6CSCS-2022, June 28-29, 2022, Belgrade, Serbia
Belgrade : Institut za multidisciplinarna istraživanja., 60.
https://hdl.handle.net/21.15107/rcub_technorep_6719

Radovanović L, Kremenović A, Radovanović Ž, Rogan J. The use of manganese(II)-pyromellitate complex precursor for the synthesis of nanosized manganese oxides. in Programme and the Book of Abstracts / 6th Conference of The Serbian Society for Ceramic Materials, 6CSCS-2022, June 28-29, 2022, Belgrade, Serbia. 2022;:60.
https://hdl.handle.net/21.15107/rcub_technorep_6719 .

Radovanović, Lidija, Kremenović, Aleksandar, Radovanović, Željko, Rogan, Jelena, "The use of manganese(II)-pyromellitate complex precursor for the synthesis of nanosized manganese oxides" in Programme and the Book of Abstracts / 6th Conference of The Serbian Society for Ceramic Materials, 6CSCS-2022, June 28-29, 2022, Belgrade, Serbia (2022):60,
https://hdl.handle.net/21.15107/rcub_technorep_6719 .

TY  - CONF
AU  - Radovanović, Željko
AU  - Radovanović, Lidija
AU  - Kremenović, Aleksandar
AU  - Janaćković, Đorđe
AU  - Petrović, Rada
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6720
AB  - Dicalcium phosphate (DP) materials, of which brushite and monetite were the most known, have
been intensively studied for several decades because of excellent resorptive and osteoconductive
properties that can satisfy the requirements needed for various medical applications, such as bone
cements, coatings of metallic implants and bone grafts [1,2]. Brushite and monetite are the dihydrated (CaHPO4·2H2O) and anhydrous (CaHPO4) forms of DPs, respectively, which showed much
better resorption due to higher solubility in comparison to the hydroxyapatite (HAp) and tricalcium
phosphate (TCP) [2].
In this study, the effect of different post-synthesis treatments on composition and morphology of four
brushite/monetite powders, were analyzed. All the powders have been prepared by modified
precipitation method described previously [3] with molar ratio of starting reagents (NH4)2HPO4 and
Ca(NO3)2·4H2O being 7:10. After filtering, powder I was obtained by drying the precipitate at 105
°C for 4 h, while powder II was obtained by precipitate freezing at ‒10 °C for 72 h, followed by
drying at room temperature for 72 h. By drying the precipitate at 110 °C for 24 h and 105 °C for 3 h,
powders III and IV were obtained, respectively. X-ray powder diffraction (XRPD) revealed that all
the powders are two-phase systems consisting of brushite and monetite: 98.8 mas.% brushite and 1.2
mas.% of monetite in I, 97.7 mas.% brushite and 2.3 mas.% of monetite in II, 66.7 mas.% brushite
and 33.3 mas.% of monetite in III and 45.9 mas.% brushite and 54.1 mas.% of monetite in IV. Field
Emission Scanning Electron Microscopy (FESEM, Figure 1) showed that particles of prepared
materials form the agglomerates in the form of triangular plates. In addition, materials were analyzed
for their spectral, thermal and textural properties.
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
T1  - Influence of Post-Synthesis Treatments on the Properties of Brushite/Monetite  Powders
EP  - 147
SP  - 146
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6720
ER  - 

@conference{
author = "Radovanović, Željko and Radovanović, Lidija and Kremenović, Aleksandar and Janaćković, Đorđe and Petrović, Rada",
year = "2022",
abstract = "Dicalcium phosphate (DP) materials, of which brushite and monetite were the most known, have
been intensively studied for several decades because of excellent resorptive and osteoconductive
properties that can satisfy the requirements needed for various medical applications, such as bone
cements, coatings of metallic implants and bone grafts [1,2]. Brushite and monetite are the dihydrated (CaHPO4·2H2O) and anhydrous (CaHPO4) forms of DPs, respectively, which showed much
better resorption due to higher solubility in comparison to the hydroxyapatite (HAp) and tricalcium
phosphate (TCP) [2].
In this study, the effect of different post-synthesis treatments on composition and morphology of four
brushite/monetite powders, were analyzed. All the powders have been prepared by modified
precipitation method described previously [3] with molar ratio of starting reagents (NH4)2HPO4 and
Ca(NO3)2·4H2O being 7:10. After filtering, powder I was obtained by drying the precipitate at 105
°C for 4 h, while powder II was obtained by precipitate freezing at ‒10 °C for 72 h, followed by
drying at room temperature for 72 h. By drying the precipitate at 110 °C for 24 h and 105 °C for 3 h,
powders III and IV were obtained, respectively. X-ray powder diffraction (XRPD) revealed that all
the powders are two-phase systems consisting of brushite and monetite: 98.8 mas.% brushite and 1.2
mas.% of monetite in I, 97.7 mas.% brushite and 2.3 mas.% of monetite in II, 66.7 mas.% brushite
and 33.3 mas.% of monetite in III and 45.9 mas.% brushite and 54.1 mas.% of monetite in IV. Field
Emission Scanning Electron Microscopy (FESEM, Figure 1) showed that particles of prepared
materials form the agglomerates in the form of triangular plates. In addition, materials were analyzed
for their spectral, thermal and textural properties.",
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",
title = "Influence of Post-Synthesis Treatments on the Properties of Brushite/Monetite  Powders",
pages = "147-146",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6720"
}

Radovanović, Ž., Radovanović, L., Kremenović, A., Janaćković, Đ.,& Petrović, R.. (2022). Influence of Post-Synthesis Treatments on the Properties of Brushite/Monetite  Powders. in Program and Book of Abstracts / Second International Conference ELMINA [Electron Microscopy of Nanostructures] 2022, Belgrade, Serbia, August 22nd-26th
Belgrade : Serbian Academy of Sciences and Arts., 146-147.
https://hdl.handle.net/21.15107/rcub_technorep_6720

Radovanović Ž, Radovanović L, Kremenović A, Janaćković Đ, Petrović R. Influence of Post-Synthesis Treatments on the Properties of Brushite/Monetite  Powders. in Program and Book of Abstracts / Second International Conference ELMINA [Electron Microscopy of Nanostructures] 2022, Belgrade, Serbia, August 22nd-26th. 2022;:146-147.
https://hdl.handle.net/21.15107/rcub_technorep_6720 .

Radovanović, Željko, Radovanović, Lidija, Kremenović, Aleksandar, Janaćković, Đorđe, Petrović, Rada, "Influence of Post-Synthesis Treatments on the Properties of Brushite/Monetite  Powders" in Program and Book of Abstracts / Second International Conference ELMINA [Electron Microscopy of Nanostructures] 2022, Belgrade, Serbia, August 22nd-26th (2022):146-147,
https://hdl.handle.net/21.15107/rcub_technorep_6720 .

TY  - CONF
AU  - Radovanović, Lidija
AU  - Radovanović, Željko
AU  - Kremenović, Aleksandar
AU  - Simović, Bojana
AU  - Vasić, Milica V.
AU  - Rogan, Jelena
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6723
AB  - In recent years, thermal decomposition studies of transition metal complexes with
benzenepolycarboxylate ligands have become an area of a great importance due to the possibility of
obtaining useful metal oxides with desirable electrical, magnetic and catalytic properties [1]. As a
contrast to conventional methods for the preparation of metal oxides, such as hydrothermal or sol–
gel treatment, thermolysis is faster, more efficient and environmentally friendly. Mn(II)–dipya
(dipya = 2,2’-dipyridylamine) complex with tetraanion of 1,2,4,5-benzenetetracarboxylic
(pyromellitic, H4pyr) acid, [Mn2(dipya)2(pyr)(H2O)2], has been prepared and characterized by
elemental, spectral and microscopy analyses. Direct thermolysis of the complex up to 1200 °C in an
air atmosphere yielded spinel Mn3O4 oxide material. The obtained Mn3O4 has been characterized
for its structural, spectroscopic, morphological and optical properties. The possibilities of using this
oxide as photocatalyst or co-photocatalyst for removing textile organic dyes, as well as inorganic
pigmentary material, were also investigated and discussed.
PB  - Banja Luka : University in Banjaluka, Faculty of Technology
C3  - Book of Abstracts / XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, Banja Luka, October 21-22, 2022
T1  - Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4
SP  - 192
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6723
ER  - 

@conference{
author = "Radovanović, Lidija and Radovanović, Željko and Kremenović, Aleksandar and Simović, Bojana and Vasić, Milica V. and Rogan, Jelena",
year = "2022",
abstract = "In recent years, thermal decomposition studies of transition metal complexes with
benzenepolycarboxylate ligands have become an area of a great importance due to the possibility of
obtaining useful metal oxides with desirable electrical, magnetic and catalytic properties [1]. As a
contrast to conventional methods for the preparation of metal oxides, such as hydrothermal or sol–
gel treatment, thermolysis is faster, more efficient and environmentally friendly. Mn(II)–dipya
(dipya = 2,2’-dipyridylamine) complex with tetraanion of 1,2,4,5-benzenetetracarboxylic
(pyromellitic, H4pyr) acid, [Mn2(dipya)2(pyr)(H2O)2], has been prepared and characterized by
elemental, spectral and microscopy analyses. Direct thermolysis of the complex up to 1200 °C in an
air atmosphere yielded spinel Mn3O4 oxide material. The obtained Mn3O4 has been characterized
for its structural, spectroscopic, morphological and optical properties. The possibilities of using this
oxide as photocatalyst or co-photocatalyst for removing textile organic dyes, as well as inorganic
pigmentary material, were also investigated and discussed.",
publisher = "Banja Luka : University in Banjaluka, Faculty of Technology",
journal = "Book of Abstracts / XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, Banja Luka, October 21-22, 2022",
title = "Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4",
pages = "192",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6723"
}

Radovanović, L., Radovanović, Ž., Kremenović, A., Simović, B., Vasić, M. V.,& Rogan, J.. (2022). Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4. in Book of Abstracts / XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, Banja Luka, October 21-22, 2022
Banja Luka : University in Banjaluka, Faculty of Technology., 192.
https://hdl.handle.net/21.15107/rcub_technorep_6723

Radovanović L, Radovanović Ž, Kremenović A, Simović B, Vasić MV, Rogan J. Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4. in Book of Abstracts / XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, Banja Luka, October 21-22, 2022. 2022;:192.
https://hdl.handle.net/21.15107/rcub_technorep_6723 .

Radovanović, Lidija, Radovanović, Željko, Kremenović, Aleksandar, Simović, Bojana, Vasić, Milica V., Rogan, Jelena, "Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4" in Book of Abstracts / XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, Banja Luka, October 21-22, 2022 (2022):192,
https://hdl.handle.net/21.15107/rcub_technorep_6723 .

TY  - CONF
AU  - Radovanović, Željko
AU  - Radovanović, Lidija
AU  - Janaćković, Đorđe
AU  - Petrović, Rada
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7400
AB  - During last decades, layered double hydroxides ([MII1−xMIIIx(OH)2]x+(A−)x/n·yH2O, LDHs) have been used in catalysis, ceramics as well as in removal of anionic pollutants. Due to their excellent anion exchange capacity, good biocompatibility and low toxicity, the nanoparticles of LDHs showed an excellent potential as drug carriers. Nifuroxazide (C12H9N3O5, NFX) is a broad-spectrum antibacterial drug, poorly soluble in water. Towards to increase the solubility of NFX, Zn-Al-LDH/NFX composite has been prepared by precipitation method at room temperture. Zn-Al-LDH, NFX and the obtained composite were analyzed by Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), simultaneous thermogravimetry-differential thermal analysis (TG-DTA) and Brunauer–Emmett–Teller (BET) method. Characterization of the raw materials and the obtained composite confirmed the intercalation of NFX in Zn-Al-LDH. The in vitro study of drug release in simulated stomach acid and intestinal fluid showed constant release of NFX from Zn-Al-LDH during 24 h, confirming Zn-Al-LDH is a promising drug carrier.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022
T1  - Characterization and drug release of Zn-Al layered double hydroxyde-nifuroxazide composite
SP  - 150
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7400
ER  - 

@conference{
author = "Radovanović, Željko and Radovanović, Lidija and Janaćković, Đorđe and Petrović, Rada",
year = "2022",
abstract = "During last decades, layered double hydroxides ([MII1−xMIIIx(OH)2]x+(A−)x/n·yH2O, LDHs) have been used in catalysis, ceramics as well as in removal of anionic pollutants. Due to their excellent anion exchange capacity, good biocompatibility and low toxicity, the nanoparticles of LDHs showed an excellent potential as drug carriers. Nifuroxazide (C12H9N3O5, NFX) is a broad-spectrum antibacterial drug, poorly soluble in water. Towards to increase the solubility of NFX, Zn-Al-LDH/NFX composite has been prepared by precipitation method at room temperture. Zn-Al-LDH, NFX and the obtained composite were analyzed by Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), simultaneous thermogravimetry-differential thermal analysis (TG-DTA) and Brunauer–Emmett–Teller (BET) method. Characterization of the raw materials and the obtained composite confirmed the intercalation of NFX in Zn-Al-LDH. The in vitro study of drug release in simulated stomach acid and intestinal fluid showed constant release of NFX from Zn-Al-LDH during 24 h, confirming Zn-Al-LDH is a promising drug carrier.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022",
title = "Characterization and drug release of Zn-Al layered double hydroxyde-nifuroxazide composite",
pages = "150",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7400"
}

Radovanović, Ž., Radovanović, L., Janaćković, Đ.,& Petrović, R.. (2022). Characterization and drug release of Zn-Al layered double hydroxyde-nifuroxazide composite. in Programme and The Book of Abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022
Belgrade : Materials Research Society of Serbia., 150.
https://hdl.handle.net/21.15107/rcub_technorep_7400

Radovanović Ž, Radovanović L, Janaćković Đ, Petrović R. Characterization and drug release of Zn-Al layered double hydroxyde-nifuroxazide composite. in Programme and The Book of Abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022. 2022;:150.
https://hdl.handle.net/21.15107/rcub_technorep_7400 .

Radovanović, Željko, Radovanović, Lidija, Janaćković, Đorđe, Petrović, Rada, "Characterization and drug release of Zn-Al layered double hydroxyde-nifuroxazide composite" in Programme and The Book of Abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022 (2022):150,
https://hdl.handle.net/21.15107/rcub_technorep_7400 .

TY  - CONF
AU  - Rogan, Jelena
AU  - Radovanović, Lidija
AU  - Simović, Bojana
AU  - Radovanović, Željko
AU  - Mihajlovski, Katarina
AU  - Dapčević, Aleksandra
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7404
AB  - Zinc oxide nanoparticles (ZnO-NPs) have been a subject of numerous researches owing to their multifunctional properties in many applications, such as solar cells, UV light-emitting devices, gas sensors and photocatalysts. ZnO-NPs can be synthesized through various methods and their features can be tailored by shape and size, resulting in new applications relevant to their structural properties. The synthesis of ZnO-NPs via controlled thermal decomposition of the single-source precursors represents a novel synthetic methodology. The basic goal of this study was to investigate the influence of precursors on crystallite size and morphology of the resulting ZnO-NPs. Four structurally characterized Zn complexes with different benzenepolycarboxylato ligands [1] were used as precursors for investigation of photocatalytic and antimicrobial effects of thermally obtained ZnO-NPs. The XRPD and FESEM analysis of ZnO-NPs, prepared by thermolysis of Zn precursors at 450 °C in the air atmosphere, revealed hexagonal wurtzite structure (space group P63mc, a ≈ 3.25 and c ≈ 5.21 Å) with an average crystallite size in the range of 39–47 nm and similar morphology. The best photocatalytic activity for degradation of Reactive orange 16 dye has been observed for ZnO-NPs where crystallites form the smallest agglomerates. All obtained ZnO-NPs showed excellent inhibitory effect against Gram-positive bacteria Staphylococcus aureus and Gram-negative bacteria Escherichia coli.
PB  - Zagreb : Croatian Association of Crystallographers
C3  - Book of Abstracts / The European Powder Diffraction Conference EPDIC 17, Šibenik, Croatia, 31 May – 03 June 2022
T1  - Photocatalytic and antimicrobial effects of zinc oxide nanoparticles prepared by thermal decomposition of zinc benzenepolycarboxylato complexes
SP  - 127
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7404
ER  - 

@conference{
author = "Rogan, Jelena and Radovanović, Lidija and Simović, Bojana and Radovanović, Željko and Mihajlovski, Katarina and Dapčević, Aleksandra",
year = "2022",
abstract = "Zinc oxide nanoparticles (ZnO-NPs) have been a subject of numerous researches owing to their multifunctional properties in many applications, such as solar cells, UV light-emitting devices, gas sensors and photocatalysts. ZnO-NPs can be synthesized through various methods and their features can be tailored by shape and size, resulting in new applications relevant to their structural properties. The synthesis of ZnO-NPs via controlled thermal decomposition of the single-source precursors represents a novel synthetic methodology. The basic goal of this study was to investigate the influence of precursors on crystallite size and morphology of the resulting ZnO-NPs. Four structurally characterized Zn complexes with different benzenepolycarboxylato ligands [1] were used as precursors for investigation of photocatalytic and antimicrobial effects of thermally obtained ZnO-NPs. The XRPD and FESEM analysis of ZnO-NPs, prepared by thermolysis of Zn precursors at 450 °C in the air atmosphere, revealed hexagonal wurtzite structure (space group P63mc, a ≈ 3.25 and c ≈ 5.21 Å) with an average crystallite size in the range of 39–47 nm and similar morphology. The best photocatalytic activity for degradation of Reactive orange 16 dye has been observed for ZnO-NPs where crystallites form the smallest agglomerates. All obtained ZnO-NPs showed excellent inhibitory effect against Gram-positive bacteria Staphylococcus aureus and Gram-negative bacteria Escherichia coli.",
publisher = "Zagreb : Croatian Association of Crystallographers",
journal = "Book of Abstracts / The European Powder Diffraction Conference EPDIC 17, Šibenik, Croatia, 31 May – 03 June 2022",
title = "Photocatalytic and antimicrobial effects of zinc oxide nanoparticles prepared by thermal decomposition of zinc benzenepolycarboxylato complexes",
pages = "127",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7404"
}

Rogan, J., Radovanović, L., Simović, B., Radovanović, Ž., Mihajlovski, K.,& Dapčević, A.. (2022). Photocatalytic and antimicrobial effects of zinc oxide nanoparticles prepared by thermal decomposition of zinc benzenepolycarboxylato complexes. in Book of Abstracts / The European Powder Diffraction Conference EPDIC 17, Šibenik, Croatia, 31 May – 03 June 2022
Zagreb : Croatian Association of Crystallographers., 127.
https://hdl.handle.net/21.15107/rcub_technorep_7404

Rogan J, Radovanović L, Simović B, Radovanović Ž, Mihajlovski K, Dapčević A. Photocatalytic and antimicrobial effects of zinc oxide nanoparticles prepared by thermal decomposition of zinc benzenepolycarboxylato complexes. in Book of Abstracts / The European Powder Diffraction Conference EPDIC 17, Šibenik, Croatia, 31 May – 03 June 2022. 2022;:127.
https://hdl.handle.net/21.15107/rcub_technorep_7404 .

Rogan, Jelena, Radovanović, Lidija, Simović, Bojana, Radovanović, Željko, Mihajlovski, Katarina, Dapčević, Aleksandra, "Photocatalytic and antimicrobial effects of zinc oxide nanoparticles prepared by thermal decomposition of zinc benzenepolycarboxylato complexes" in Book of Abstracts / The European Powder Diffraction Conference EPDIC 17, Šibenik, Croatia, 31 May – 03 June 2022 (2022):127,
https://hdl.handle.net/21.15107/rcub_technorep_7404 .

TY  - CONF
AU  - Marjanović, Vesna
AU  - Janković-Častvan, Ivona
AU  - Lazarević, Slavica
AU  - Radovanović, Željko
AU  - Janaćković, Đorđe
AU  - Petrović, Rada
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5920
AB  - Ciprofloxacin (CIP) as a broad-spectrum quinolone antibiotic is extensively used in daily life and can be detected in municipal and pharmaceutical wastewaters, as well as natural waters. In this study, natural mineral sepiolite (SEP), SEP modified with hexadecyltrimethylammonium-bromide (HDAB) and SEP composites with graphene oxide (GO) were used as adsorbents for the removal of CIP from aqueous solutions. The composites were prepared at a mass ratio SEP to GO of 2 : 1, using SEP and SEP modified by [3-(2-aminoethylamino)propyl]trimethoxy-silane (APT). Thermogravimetric analysis, X-ray diffraction and nitrogen adsorption-desorption were used to characterize the obtained adsorbents. The adsorption of CIP was investigated at the pH value close to pH of natural waters. The concentration of CIP in aqueous solution was determined by UV-Vis spectroscopy. GO showed the highest adsorption capacity (~ 150 mg/g). The capacity of SEP was about 60 mg/g, while the SEP modification with HDAB has led to a decrease in the adsorption capacity (~ 35 mg/g). The composite SEP/GO showed the higher adsorption capacity (~ 110 mg/g) than the composite SEP-APT/GO (~ 40 mg/g). The capacity of the composite SEP/GO was higher than of mixture of SEP and GO, which indicated a certain degree of GO exfoliation and intecalation of sepiolie particles, as it was shown by X-ray diffraction. Equilibrium data for all adsorbents, except for HDAB modified sepiolite, fitted well to the Langmuir isotherm model.
PB  - University of Novi Sad, Faculty of Technology Novi Sad
C3  - 2nd International Conference on Advanced Production and Processing, Book of abstracts
T1  - Ciprofloxacin removal using sepiolite-based adsorbents
SP  - 218
SP  - 218
UR  - https://hdl.handle.net/21.15107/rcub_technorep_5920
ER  - 

@conference{
author = "Marjanović, Vesna and Janković-Častvan, Ivona and Lazarević, Slavica and Radovanović, Željko and Janaćković, Đorđe and Petrović, Rada",
year = "2022",
abstract = "Ciprofloxacin (CIP) as a broad-spectrum quinolone antibiotic is extensively used in daily life and can be detected in municipal and pharmaceutical wastewaters, as well as natural waters. In this study, natural mineral sepiolite (SEP), SEP modified with hexadecyltrimethylammonium-bromide (HDAB) and SEP composites with graphene oxide (GO) were used as adsorbents for the removal of CIP from aqueous solutions. The composites were prepared at a mass ratio SEP to GO of 2 : 1, using SEP and SEP modified by [3-(2-aminoethylamino)propyl]trimethoxy-silane (APT). Thermogravimetric analysis, X-ray diffraction and nitrogen adsorption-desorption were used to characterize the obtained adsorbents. The adsorption of CIP was investigated at the pH value close to pH of natural waters. The concentration of CIP in aqueous solution was determined by UV-Vis spectroscopy. GO showed the highest adsorption capacity (~ 150 mg/g). The capacity of SEP was about 60 mg/g, while the SEP modification with HDAB has led to a decrease in the adsorption capacity (~ 35 mg/g). The composite SEP/GO showed the higher adsorption capacity (~ 110 mg/g) than the composite SEP-APT/GO (~ 40 mg/g). The capacity of the composite SEP/GO was higher than of mixture of SEP and GO, which indicated a certain degree of GO exfoliation and intecalation of sepiolie particles, as it was shown by X-ray diffraction. Equilibrium data for all adsorbents, except for HDAB modified sepiolite, fitted well to the Langmuir isotherm model.",
publisher = "University of Novi Sad, Faculty of Technology Novi Sad",
journal = "2nd International Conference on Advanced Production and Processing, Book of abstracts",
title = "Ciprofloxacin removal using sepiolite-based adsorbents",
pages = "218-218",
url = "https://hdl.handle.net/21.15107/rcub_technorep_5920"
}

Marjanović, V., Janković-Častvan, I., Lazarević, S., Radovanović, Ž., Janaćković, Đ.,& Petrović, R.. (2022). Ciprofloxacin removal using sepiolite-based adsorbents. in 2nd International Conference on Advanced Production and Processing, Book of abstracts
University of Novi Sad, Faculty of Technology Novi Sad., 218.
https://hdl.handle.net/21.15107/rcub_technorep_5920

Marjanović V, Janković-Častvan I, Lazarević S, Radovanović Ž, Janaćković Đ, Petrović R. Ciprofloxacin removal using sepiolite-based adsorbents. in 2nd International Conference on Advanced Production and Processing, Book of abstracts. 2022;:218.
https://hdl.handle.net/21.15107/rcub_technorep_5920 .

Marjanović, Vesna, Janković-Častvan, Ivona, Lazarević, Slavica, Radovanović, Željko, Janaćković, Đorđe, Petrović, Rada, "Ciprofloxacin removal using sepiolite-based adsorbents" in 2nd International Conference on Advanced Production and Processing, Book of abstracts (2022):218,
https://hdl.handle.net/21.15107/rcub_technorep_5920 .

TY  - CONF
AU  - Obradović, Bojana
AU  - Stojkovska, Jasmina
AU  - Radovanović, Željko
AU  - Matić, Tamara
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
AU  - Veljović, Đorđe
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6682
AB  - Biomaterials engineering is one of the strongest research areas at the Faculty of Technology and Metallurgy (FTM), University of Belgrade including development of novel biomaterials for orthopaedic and dental applications. Especially, synthesis and physico-chemical characterization methods are well established resulting in variety of novel inorganic, polymer and composite biomaterials produced in different forms with controlled compositions and structures. Still, expertise in further advancement of the research results towards utilization in medical devices is lacking. The ExcellMater Horizon 2020 project aims to further advance the scientific and technological capacity of the Faculty in this area by twinning the knowledge from the three European partners, internationally leading institutions, with recognized expertise in biological characterization methods, intellectual property protection and utilization, evaluation of health technologies and regulatory aspects of medical devices. The aim of the project is also to increase visibility of scientific research and enhance collaboration of engineers at FTM with life scientists, medical doctors and pharmacists as well as with industry. Here, we will present some of the novel bioceramic and composite biomaterials developed at FTM aimed for potential applications in orthopaedics, dentistry, bone tissue engineering, and cancer research.
PB  - Consiglio Nazionale delle Ricerche Istituto di Struttura della Materia
C3  - Conference proceedings / 3rd biennial International Conference: Biomaterials and novel technologies for healthcare BIOMAH, October 18-21, 2022 Rome – Italy
T1  - The ExcellMater project for advancement of novel bioceramic and composite biomaterials for medical applications
EP  - 197
SP  - 196
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6682
ER  - 

@conference{
author = "Obradović, Bojana and Stojkovska, Jasmina and Radovanović, Željko and Matić, Tamara and Petrović, Rada and Janaćković, Đorđe and Veljović, Đorđe",
year = "2022",
abstract = "Biomaterials engineering is one of the strongest research areas at the Faculty of Technology and Metallurgy (FTM), University of Belgrade including development of novel biomaterials for orthopaedic and dental applications. Especially, synthesis and physico-chemical characterization methods are well established resulting in variety of novel inorganic, polymer and composite biomaterials produced in different forms with controlled compositions and structures. Still, expertise in further advancement of the research results towards utilization in medical devices is lacking. The ExcellMater Horizon 2020 project aims to further advance the scientific and technological capacity of the Faculty in this area by twinning the knowledge from the three European partners, internationally leading institutions, with recognized expertise in biological characterization methods, intellectual property protection and utilization, evaluation of health technologies and regulatory aspects of medical devices. The aim of the project is also to increase visibility of scientific research and enhance collaboration of engineers at FTM with life scientists, medical doctors and pharmacists as well as with industry. Here, we will present some of the novel bioceramic and composite biomaterials developed at FTM aimed for potential applications in orthopaedics, dentistry, bone tissue engineering, and cancer research.",
publisher = "Consiglio Nazionale delle Ricerche Istituto di Struttura della Materia",
journal = "Conference proceedings / 3rd biennial International Conference: Biomaterials and novel technologies for healthcare BIOMAH, October 18-21, 2022 Rome – Italy",
title = "The ExcellMater project for advancement of novel bioceramic and composite biomaterials for medical applications",
pages = "197-196",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6682"
}

Obradović, B., Stojkovska, J., Radovanović, Ž., Matić, T., Petrović, R., Janaćković, Đ.,& Veljović, Đ.. (2022). The ExcellMater project for advancement of novel bioceramic and composite biomaterials for medical applications. in Conference proceedings / 3rd biennial International Conference: Biomaterials and novel technologies for healthcare BIOMAH, October 18-21, 2022 Rome – Italy
Consiglio Nazionale delle Ricerche Istituto di Struttura della Materia., 196-197.
https://hdl.handle.net/21.15107/rcub_technorep_6682

Obradović B, Stojkovska J, Radovanović Ž, Matić T, Petrović R, Janaćković Đ, Veljović Đ. The ExcellMater project for advancement of novel bioceramic and composite biomaterials for medical applications. in Conference proceedings / 3rd biennial International Conference: Biomaterials and novel technologies for healthcare BIOMAH, October 18-21, 2022 Rome – Italy. 2022;:196-197.
https://hdl.handle.net/21.15107/rcub_technorep_6682 .

Obradović, Bojana, Stojkovska, Jasmina, Radovanović, Željko, Matić, Tamara, Petrović, Rada, Janaćković, Đorđe, Veljović, Đorđe, "The ExcellMater project for advancement of novel bioceramic and composite biomaterials for medical applications" in Conference proceedings / 3rd biennial International Conference: Biomaterials and novel technologies for healthcare BIOMAH, October 18-21, 2022 Rome – Italy (2022):196-197,
https://hdl.handle.net/21.15107/rcub_technorep_6682 .

TY  - JOUR
AU  - Popović, Ana L.
AU  - Veličković, Zlate
AU  - Radovanović, Željko
AU  - Đolić, Maja
AU  - Pavlović, Vladimir
AU  - Marinković, Aleksandar D.
AU  - Grzetić, Jelena D.
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5155
AB  - Highly effective lignin-based microspheres were prepared by inverse copolymerization of lignin (kraft) from suspension, with poly(ethylene imine) and amino-functionalized magnetite nanoparticles (A-LMS_Fe3O4) or manganese(IV)oxide nanoparticles (A-LMS_MnO2). The XRD, FTIR, SEM, BET, TEM techniques, including the porosity determination, were performed to analyze morphological and structural properties of synthesized microspheres. The effect of pH, the adsorbent dosage, temperature and contact duration on a batch-mode adsorption efficiency of arsenate and chromate (oxy)anions removal was tested. Spontaneous adsorption was found to be feasible, reaching the adsorption capacities of Cr(VI) (62.9 mg g-1), As(V) (47.8 mg g-1) by A-LMS_Fe3O4, and of Cr(VI) (73.9 mg g-1), As(V) (62.5 mg g-1) using A-LMS_MnO2 adsorbent. Fast removal rates were confirmed via kinetic study, using pseudo-second order, the Weber-Morris and the single resistance mass-transfer model, with a limiting step of the diffusion transport through pores. The correlation of fixed-bed-column results with Bohart-Adams, Thomas, Yoon-Nelson and Dose Response models displayed that breakthrough behavior was influenced by flow rate and the inlet concentration. Significant potential of produced bio-adsorbent is further confirmed by the pore surface diffusion modeling, desorption study and adsorption from multi-component system using artificial water.
PB  - Elsevier Ltd.
T2  - Journal of Environmental Chemical Engineering
T1  - Hybrid amino-terminated lignin microspheres loaded with magnetite and manganese oxide nanoparticles: An effective hazardous oxyanions adsorbent
IS  - 3
SP  - 108009
VL  - 10
DO  - 10.1016/j.jece.2022.108009
ER  - 

@article{
author = "Popović, Ana L. and Veličković, Zlate and Radovanović, Željko and Đolić, Maja and Pavlović, Vladimir and Marinković, Aleksandar D. and Grzetić, Jelena D.",
year = "2022",
abstract = "Highly effective lignin-based microspheres were prepared by inverse copolymerization of lignin (kraft) from suspension, with poly(ethylene imine) and amino-functionalized magnetite nanoparticles (A-LMS_Fe3O4) or manganese(IV)oxide nanoparticles (A-LMS_MnO2). The XRD, FTIR, SEM, BET, TEM techniques, including the porosity determination, were performed to analyze morphological and structural properties of synthesized microspheres. The effect of pH, the adsorbent dosage, temperature and contact duration on a batch-mode adsorption efficiency of arsenate and chromate (oxy)anions removal was tested. Spontaneous adsorption was found to be feasible, reaching the adsorption capacities of Cr(VI) (62.9 mg g-1), As(V) (47.8 mg g-1) by A-LMS_Fe3O4, and of Cr(VI) (73.9 mg g-1), As(V) (62.5 mg g-1) using A-LMS_MnO2 adsorbent. Fast removal rates were confirmed via kinetic study, using pseudo-second order, the Weber-Morris and the single resistance mass-transfer model, with a limiting step of the diffusion transport through pores. The correlation of fixed-bed-column results with Bohart-Adams, Thomas, Yoon-Nelson and Dose Response models displayed that breakthrough behavior was influenced by flow rate and the inlet concentration. Significant potential of produced bio-adsorbent is further confirmed by the pore surface diffusion modeling, desorption study and adsorption from multi-component system using artificial water.",
publisher = "Elsevier Ltd.",
journal = "Journal of Environmental Chemical Engineering",
title = "Hybrid amino-terminated lignin microspheres loaded with magnetite and manganese oxide nanoparticles: An effective hazardous oxyanions adsorbent",
number = "3",
pages = "108009",
volume = "10",
doi = "10.1016/j.jece.2022.108009"
}

Popović, A. L., Veličković, Z., Radovanović, Ž., Đolić, M., Pavlović, V., Marinković, A. D.,& Grzetić, J. D.. (2022). Hybrid amino-terminated lignin microspheres loaded with magnetite and manganese oxide nanoparticles: An effective hazardous oxyanions adsorbent. in Journal of Environmental Chemical Engineering
Elsevier Ltd.., 10(3), 108009.
https://doi.org/10.1016/j.jece.2022.108009

Popović AL, Veličković Z, Radovanović Ž, Đolić M, Pavlović V, Marinković AD, Grzetić JD. Hybrid amino-terminated lignin microspheres loaded with magnetite and manganese oxide nanoparticles: An effective hazardous oxyanions adsorbent. in Journal of Environmental Chemical Engineering. 2022;10(3):108009.
doi:10.1016/j.jece.2022.108009 .

Popović, Ana L., Veličković, Zlate, Radovanović, Željko, Đolić, Maja, Pavlović, Vladimir, Marinković, Aleksandar D., Grzetić, Jelena D., "Hybrid amino-terminated lignin microspheres loaded with magnetite and manganese oxide nanoparticles: An effective hazardous oxyanions adsorbent" in Journal of Environmental Chemical Engineering, 10, no. 3 (2022):108009,
https://doi.org/10.1016/j.jece.2022.108009 . .

TY  - JOUR
AU  - Kazuz, Abdul
AU  - Radovanović, Željko
AU  - Veljović, Đorđe
AU  - Kojić, Vesna
AU  - Jakimov, Dimitar
AU  - Vlajić-Tovilović, Tamara
AU  - Miletić, Vesna
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5143
AB  - α-Tricalcium phosphate/fluorapatite (α-TCP/FAp) mixed powders were prepared in order to obtain dental root canal filling cements. Different liquids for cement pastes have been investigated and the most suitable one for obtaining rheologically optimal pastes was chosen for further analysis. Morphological changes in the cement materials as a consequence of the formation of hydroxyapatite (HAp) after the immersion in a simulated body fluid (SBF), an influence on the cell viability, and final success of the filling were investigated by field emission scanning electron microscopy. Treatment of the α-TCP/FAp mixtures in SBF at 37 °C resulted in a complete transformation of α-TCP into HAp after 10 days, while the exposure of MRC-5 human and L929 animal fibroblast cells to the cement showed complete absence of cytotoxicity. The root canal of an extracted tooth was filled with the α-TCP/FAp cement containing 5 wt.% of FAp and relatively strong adhesion between the cement and dentine was observed after 48 h. The same cement material was immersed during 10 days in SBF and after that both human and animal fibroblast cells during in vitro MTT tests showed higher cell viability compared to the control sample. These findings lead to a conclusion that the α-TCP/FAp based cement demonstrates potential for further development towards dental cement application.
PB  - University of Novi Sad, Faculty of Technology
T2  - Processing and Application of Ceramics
T1  - α-Tricalcium phosphate/fluorapatite-based cement – Promising dental root canal filling material
EP  - 29
IS  - 1
SP  - 22
VL  - 16
DO  - 10.2298/PAC2201022K
ER  - 

@article{
author = "Kazuz, Abdul and Radovanović, Željko and Veljović, Đorđe and Kojić, Vesna and Jakimov, Dimitar and Vlajić-Tovilović, Tamara and Miletić, Vesna and Petrović, Rada and Janaćković, Đorđe",
year = "2022",
abstract = "α-Tricalcium phosphate/fluorapatite (α-TCP/FAp) mixed powders were prepared in order to obtain dental root canal filling cements. Different liquids for cement pastes have been investigated and the most suitable one for obtaining rheologically optimal pastes was chosen for further analysis. Morphological changes in the cement materials as a consequence of the formation of hydroxyapatite (HAp) after the immersion in a simulated body fluid (SBF), an influence on the cell viability, and final success of the filling were investigated by field emission scanning electron microscopy. Treatment of the α-TCP/FAp mixtures in SBF at 37 °C resulted in a complete transformation of α-TCP into HAp after 10 days, while the exposure of MRC-5 human and L929 animal fibroblast cells to the cement showed complete absence of cytotoxicity. The root canal of an extracted tooth was filled with the α-TCP/FAp cement containing 5 wt.% of FAp and relatively strong adhesion between the cement and dentine was observed after 48 h. The same cement material was immersed during 10 days in SBF and after that both human and animal fibroblast cells during in vitro MTT tests showed higher cell viability compared to the control sample. These findings lead to a conclusion that the α-TCP/FAp based cement demonstrates potential for further development towards dental cement application.",
publisher = "University of Novi Sad, Faculty of Technology",
journal = "Processing and Application of Ceramics",
title = "α-Tricalcium phosphate/fluorapatite-based cement – Promising dental root canal filling material",
pages = "29-22",
number = "1",
volume = "16",
doi = "10.2298/PAC2201022K"
}

Kazuz, A., Radovanović, Ž., Veljović, Đ., Kojić, V., Jakimov, D., Vlajić-Tovilović, T., Miletić, V., Petrović, R.,& Janaćković, Đ.. (2022). α-Tricalcium phosphate/fluorapatite-based cement – Promising dental root canal filling material. in Processing and Application of Ceramics
University of Novi Sad, Faculty of Technology., 16(1), 22-29.
https://doi.org/10.2298/PAC2201022K

Kazuz A, Radovanović Ž, Veljović Đ, Kojić V, Jakimov D, Vlajić-Tovilović T, Miletić V, Petrović R, Janaćković Đ. α-Tricalcium phosphate/fluorapatite-based cement – Promising dental root canal filling material. in Processing and Application of Ceramics. 2022;16(1):22-29.
doi:10.2298/PAC2201022K .

Kazuz, Abdul, Radovanović, Željko, Veljović, Đorđe, Kojić, Vesna, Jakimov, Dimitar, Vlajić-Tovilović, Tamara, Miletić, Vesna, Petrović, Rada, Janaćković, Đorđe, "α-Tricalcium phosphate/fluorapatite-based cement – Promising dental root canal filling material" in Processing and Application of Ceramics, 16, no. 1 (2022):22-29,
https://doi.org/10.2298/PAC2201022K . .

TY  - JOUR
AU  - Vidak Vasić, Milica
AU  - Terzić, Anja
AU  - Radovanović, Željko
AU  - Radojević, Zagorka
AU  - Warr, Laurence N.
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5301
AB  - Geopolymerization was investigated as an alternative to traditional ceramic products by developing a more sustainable approach that avoids thermal treatment. The study presents the first known alkali-activation of the raw clay and waste clay brick mixture using the solid to liquid ratios of 2.33 and 2.78. Several experimental sets were prepared to harden under varying conditions (2–4 days drying in 60 °C–70 °C and 3 h steam-curing). Non-activated and activated samples were analyzed for their physical and chemical properties after 14, 21, and 28 days. The tile-shaped specimens exhibited better initial drying behavior than the cubes and produced stronger materials with fewer cracks. Pre-curing in steam conditions induced higher flexural strength (13.7 MPa) and water absorption (13.13%) for the geopolymer tiles. The highest Si/Al molar ratio in the amorphous portion of 5.78 induced the best flexural strength. The geopolymerization process showed microstructural changes associated with the appearance of fibrous Na-zeolite nanocrystals. The degree of geopolymerization and zeolite formation was enhanced by steam-curing, but the microstructural stress and heterogeneity induced by the reactions resulted in higher water absorption. Ongoing reactions of amorphization in the bulk material and further crystallization at the surface are documented after 6 months of curing. This first detailed study reveals that the production of geopolymer ceramics from brick waste is possible, but further optimization of the activating solution and curing parameters is required.
PB  - Elsevier Ltd.
T2  - Applied Clay Science
T1  - Alkali-activated geopolymerization of a low illitic raw clay and waste brick mixture. An alternative to traditional ceramics
SP  - 106410
VL  - 218
DO  - 10.1016/j.clay.2022.106410
ER  - 

@article{
author = "Vidak Vasić, Milica and Terzić, Anja and Radovanović, Željko and Radojević, Zagorka and Warr, Laurence N.",
year = "2022",
abstract = "Geopolymerization was investigated as an alternative to traditional ceramic products by developing a more sustainable approach that avoids thermal treatment. The study presents the first known alkali-activation of the raw clay and waste clay brick mixture using the solid to liquid ratios of 2.33 and 2.78. Several experimental sets were prepared to harden under varying conditions (2–4 days drying in 60 °C–70 °C and 3 h steam-curing). Non-activated and activated samples were analyzed for their physical and chemical properties after 14, 21, and 28 days. The tile-shaped specimens exhibited better initial drying behavior than the cubes and produced stronger materials with fewer cracks. Pre-curing in steam conditions induced higher flexural strength (13.7 MPa) and water absorption (13.13%) for the geopolymer tiles. The highest Si/Al molar ratio in the amorphous portion of 5.78 induced the best flexural strength. The geopolymerization process showed microstructural changes associated with the appearance of fibrous Na-zeolite nanocrystals. The degree of geopolymerization and zeolite formation was enhanced by steam-curing, but the microstructural stress and heterogeneity induced by the reactions resulted in higher water absorption. Ongoing reactions of amorphization in the bulk material and further crystallization at the surface are documented after 6 months of curing. This first detailed study reveals that the production of geopolymer ceramics from brick waste is possible, but further optimization of the activating solution and curing parameters is required.",
publisher = "Elsevier Ltd.",
journal = "Applied Clay Science",
title = "Alkali-activated geopolymerization of a low illitic raw clay and waste brick mixture. An alternative to traditional ceramics",
pages = "106410",
volume = "218",
doi = "10.1016/j.clay.2022.106410"
}

Vidak Vasić, M., Terzić, A., Radovanović, Ž., Radojević, Z.,& Warr, L. N.. (2022). Alkali-activated geopolymerization of a low illitic raw clay and waste brick mixture. An alternative to traditional ceramics. in Applied Clay Science
Elsevier Ltd.., 218, 106410.
https://doi.org/10.1016/j.clay.2022.106410

Vidak Vasić M, Terzić A, Radovanović Ž, Radojević Z, Warr LN. Alkali-activated geopolymerization of a low illitic raw clay and waste brick mixture. An alternative to traditional ceramics. in Applied Clay Science. 2022;218:106410.
doi:10.1016/j.clay.2022.106410 .

Vidak Vasić, Milica, Terzić, Anja, Radovanović, Željko, Radojević, Zagorka, Warr, Laurence N., "Alkali-activated geopolymerization of a low illitic raw clay and waste brick mixture. An alternative to traditional ceramics" in Applied Clay Science, 218 (2022):106410,
https://doi.org/10.1016/j.clay.2022.106410 . .

TY  - CONF
AU  - Radovanović, Željko
AU  - Mihajlovski, Katarina
AU  - Radovanović, Lidija
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7399
AB  - The synergistic effect of two materials is a desirable phenomenon when designing a conjugate
material. Synthetic Hydroxyapatite (HAp, Ca10(PO4)6(OH)2) is very similar to the inorganic part of
bones and teeth of mammals. It is a well-known biomaterial with good biocompatibility,
osteoconductivity and bioactivity. Nifuroxazide (NFX, C12H9N3O5) is a broad-spectrum antibacterial
drug and poorly soluble in water. Nano HAp and NFX were mixed and homogenized in rotovapor
giving as a result HAp/NFX conjugate. All materials were analyzed by Fourier transform infrared
spectroscopy (FTIR), Field emission scanning electron microscopy (FESEM), X-Ray diffraction
(XRD), Thermogravimetry (TG) and Brunauer–Emmett–Teller (BET) method. The in vitro
antibacterial activities of HAp, NFX and HAp/NFX were examined against Gram-positive bacteria
Staphylococcus aureus, Gram-negative bacteria Escherichia coli and yeast Candida albicans. In vitro
drug release in simulated stomach acid and intestinal fluid showed a much faster release of NFX from
HAp surface than those of raw drug. Afore mentioned analyses showed the unique properties of the
HAp/NFX conjugate and introduced it as particularly prominent drug carrier.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and the Book of abstracts / Twenty-second Annual Conference YUCOMAT 2021 Herceg Novi, Montenegro, August 30 - September 3, 2021
T1  - Promising Hydroxyapatite/Nifuroksazid Conjugate
SP  - 126
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7399
ER  - 

@conference{
author = "Radovanović, Željko and Mihajlovski, Katarina and Radovanović, Lidija and Petrović, Rada and Janaćković, Đorđe",
year = "2021",
abstract = "The synergistic effect of two materials is a desirable phenomenon when designing a conjugate
material. Synthetic Hydroxyapatite (HAp, Ca10(PO4)6(OH)2) is very similar to the inorganic part of
bones and teeth of mammals. It is a well-known biomaterial with good biocompatibility,
osteoconductivity and bioactivity. Nifuroxazide (NFX, C12H9N3O5) is a broad-spectrum antibacterial
drug and poorly soluble in water. Nano HAp and NFX were mixed and homogenized in rotovapor
giving as a result HAp/NFX conjugate. All materials were analyzed by Fourier transform infrared
spectroscopy (FTIR), Field emission scanning electron microscopy (FESEM), X-Ray diffraction
(XRD), Thermogravimetry (TG) and Brunauer–Emmett–Teller (BET) method. The in vitro
antibacterial activities of HAp, NFX and HAp/NFX were examined against Gram-positive bacteria
Staphylococcus aureus, Gram-negative bacteria Escherichia coli and yeast Candida albicans. In vitro
drug release in simulated stomach acid and intestinal fluid showed a much faster release of NFX from
HAp surface than those of raw drug. Afore mentioned analyses showed the unique properties of the
HAp/NFX conjugate and introduced it as particularly prominent drug carrier.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and the Book of abstracts / Twenty-second Annual Conference YUCOMAT 2021 Herceg Novi, Montenegro, August 30 - September 3, 2021",
title = "Promising Hydroxyapatite/Nifuroksazid Conjugate",
pages = "126",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7399"
}

Radovanović, Ž., Mihajlovski, K., Radovanović, L., Petrović, R.,& Janaćković, Đ.. (2021). Promising Hydroxyapatite/Nifuroksazid Conjugate. in Programme and the Book of abstracts / Twenty-second Annual Conference YUCOMAT 2021 Herceg Novi, Montenegro, August 30 - September 3, 2021
Belgrade : Materials Research Society of Serbia., 126.
https://hdl.handle.net/21.15107/rcub_technorep_7399

Radovanović Ž, Mihajlovski K, Radovanović L, Petrović R, Janaćković Đ. Promising Hydroxyapatite/Nifuroksazid Conjugate. in Programme and the Book of abstracts / Twenty-second Annual Conference YUCOMAT 2021 Herceg Novi, Montenegro, August 30 - September 3, 2021. 2021;:126.
https://hdl.handle.net/21.15107/rcub_technorep_7399 .

Radovanović, Željko, Mihajlovski, Katarina, Radovanović, Lidija, Petrović, Rada, Janaćković, Đorđe, "Promising Hydroxyapatite/Nifuroksazid Conjugate" in Programme and the Book of abstracts / Twenty-second Annual Conference YUCOMAT 2021 Herceg Novi, Montenegro, August 30 - September 3, 2021 (2021):126,
https://hdl.handle.net/21.15107/rcub_technorep_7399 .

TY  - CONF
AU  - Petrović, Rada
AU  - Lazarević, Slavica
AU  - Janković-Častvan, Ivona
AU  - Radovanović, Željko
AU  - Janaćković, Đorđe
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5925
AB  - Наночестице елементарног гвожђа (nano zero valent iron, nZVI) се све више користе за уклањање различитих загађујућих материја из воде захваљујући великој активности, нетоксичности и релативно ниској цени. Да би процес синтезе nZVI редукцијом јона гвожђа био што економичнији и еколошки прихватљив, уместо хемијских средстава примењују се екстракти лишћа различитих биљака. У овом раду, nZVI је синтетисан коришћењем екстракта лишћа храста, који је добијен екстракцијом на топло (80'С). Варирани су односи раствора FeCl3 и екстракта, као и концентрација раствора FeCl3, да би се утврдили оптимални услови за највећи принос nZVI. Скенирајућа електронска микроскопија је показала да су честице реда величине 20 nm и веома агломерисане. Енергетском дисперзионом спектроскопијом је да nZVI садржи мање од 10 mas. % гвожђа, услед великог садржаја компоненти екстракта. Систематска испитивања уклањања шестовалентног хрома, Cr(VI), из раствора у деминерализованој води и реалне отпадне воде су показала велики потенцијал синтетисаног nZVI за третман отпадних вода које садрже Cr(VI), посебно при ниским pН вредностима.
C3  - Zbornik radova 42. Međunarodnog stručno-naučnog skupa Vodovod i kanalizacija ´21
T1  - Removal of hexavalent chromium from wastewaters using nano zero-valent iron produced by oak leaf extract
EP  - 207
SP  - 202
UR  - https://hdl.handle.net/21.15107/rcub_technorep_5925
ER  - 

@conference{
author = "Petrović, Rada and Lazarević, Slavica and Janković-Častvan, Ivona and Radovanović, Željko and Janaćković, Đorđe",
year = "2021",
abstract = "Наночестице елементарног гвожђа (nano zero valent iron, nZVI) се све више користе за уклањање различитих загађујућих материја из воде захваљујући великој активности, нетоксичности и релативно ниској цени. Да би процес синтезе nZVI редукцијом јона гвожђа био што економичнији и еколошки прихватљив, уместо хемијских средстава примењују се екстракти лишћа различитих биљака. У овом раду, nZVI је синтетисан коришћењем екстракта лишћа храста, који је добијен екстракцијом на топло (80'С). Варирани су односи раствора FeCl3 и екстракта, као и концентрација раствора FeCl3, да би се утврдили оптимални услови за највећи принос nZVI. Скенирајућа електронска микроскопија је показала да су честице реда величине 20 nm и веома агломерисане. Енергетском дисперзионом спектроскопијом је да nZVI садржи мање од 10 mas. % гвожђа, услед великог садржаја компоненти екстракта. Систематска испитивања уклањања шестовалентног хрома, Cr(VI), из раствора у деминерализованој води и реалне отпадне воде су показала велики потенцијал синтетисаног nZVI за третман отпадних вода које садрже Cr(VI), посебно при ниским pН вредностима.",
journal = "Zbornik radova 42. Međunarodnog stručno-naučnog skupa Vodovod i kanalizacija ´21",
title = "Removal of hexavalent chromium from wastewaters using nano zero-valent iron produced by oak leaf extract",
pages = "207-202",
url = "https://hdl.handle.net/21.15107/rcub_technorep_5925"
}

Petrović, R., Lazarević, S., Janković-Častvan, I., Radovanović, Ž.,& Janaćković, Đ.. (2021). Removal of hexavalent chromium from wastewaters using nano zero-valent iron produced by oak leaf extract. in Zbornik radova 42. Međunarodnog stručno-naučnog skupa Vodovod i kanalizacija ´21, 202-207.
https://hdl.handle.net/21.15107/rcub_technorep_5925

Petrović R, Lazarević S, Janković-Častvan I, Radovanović Ž, Janaćković Đ. Removal of hexavalent chromium from wastewaters using nano zero-valent iron produced by oak leaf extract. in Zbornik radova 42. Međunarodnog stručno-naučnog skupa Vodovod i kanalizacija ´21. 2021;:202-207.
https://hdl.handle.net/21.15107/rcub_technorep_5925 .

Petrović, Rada, Lazarević, Slavica, Janković-Častvan, Ivona, Radovanović, Željko, Janaćković, Đorđe, "Removal of hexavalent chromium from wastewaters using nano zero-valent iron produced by oak leaf extract" in Zbornik radova 42. Međunarodnog stručno-naučnog skupa Vodovod i kanalizacija ´21 (2021):202-207,
https://hdl.handle.net/21.15107/rcub_technorep_5925 .