TY  - JOUR
AU  - Kalijadis, Ana
AU  - Gavrilov, Nemanja M.
AU  - Jokić, Bojan M.
AU  - Gilić, Martina
AU  - Krstić, Aleksandar D.
AU  - Pašti, Igor A.
AU  - Babić, Biljana M.
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5887
AB  - Resorcinol–formaldehyde (RF) cryogels were synthesized by sol–gel polycondensation of resorcinol with formaldehyde and freeze-drying was carried out with t-butanol. Carbon cryogel (CC) was obtained by pyrolyzing RF cryogels in an inert atmosphere to 950 °C. Nitrogen doped CCs (CCN) were synthesized by introducing melamine into RF precursor mixture solution to obtain nitrogen concentration 2, 6 and 10 wt.%. Material was characterized by elemental analysis, nitrogen adsorption– desorption measurements, scanning electron microscopy (SEM), Raman spectroscopy, FT-IR Spectroscopy. Cyclic voltammetry (CV) was used to investigate capacitive and electrocatalytic properties. Conductivity measurement was also performed. Elemental analysis results confirmed presence of nitrogen in CCN samples in the range from 0.45 to 1.15 wt.%. Raman spectroscopy of the samples showed increase of D and G peak integrated intensity ratio (ID/IG) with nitrogen doping suggesting that the structural disorder as well as edge plane density increase, but according to similar ID/IG values for CCN samples, their share is not directly related to the amount of incorporated N. Characterization by nitrogen adsorption showed that overall specific surface and maximum mesopores are achieved in CCN sample with medium nitrogen concentration. Results of cyclic voltammetry experiments demonstrated maximum capacitance for CCN sample with smallest N wt.% indicating that narrow pore size distribution and high specific surface area are dominant factors to achieve good capacitive behavior. The relatively low doping level of nitrogen reached in CCN samples may be the reason for the incomplete reduction of oxygen to hydroxide and furthermore it turned out that presence of N in the structure of CC had a negligible effect on the otherwise relatively high conductivity of CC. © 2019 Elsevier B.V.
T2  - Materials Chemistry and Physics
T1  - Composition, structure and potential energy application of nitrogen doped carbon cryogels
SP  - 122120
VL  - 239
DO  - 10.1016/j.matchemphys.2019.122120
ER  - 

@article{
author = "Kalijadis, Ana and Gavrilov, Nemanja M. and Jokić, Bojan M. and Gilić, Martina and Krstić, Aleksandar D. and Pašti, Igor A. and Babić, Biljana M.",
year = "2020",
abstract = "Resorcinol–formaldehyde (RF) cryogels were synthesized by sol–gel polycondensation of resorcinol with formaldehyde and freeze-drying was carried out with t-butanol. Carbon cryogel (CC) was obtained by pyrolyzing RF cryogels in an inert atmosphere to 950 °C. Nitrogen doped CCs (CCN) were synthesized by introducing melamine into RF precursor mixture solution to obtain nitrogen concentration 2, 6 and 10 wt.%. Material was characterized by elemental analysis, nitrogen adsorption– desorption measurements, scanning electron microscopy (SEM), Raman spectroscopy, FT-IR Spectroscopy. Cyclic voltammetry (CV) was used to investigate capacitive and electrocatalytic properties. Conductivity measurement was also performed. Elemental analysis results confirmed presence of nitrogen in CCN samples in the range from 0.45 to 1.15 wt.%. Raman spectroscopy of the samples showed increase of D and G peak integrated intensity ratio (ID/IG) with nitrogen doping suggesting that the structural disorder as well as edge plane density increase, but according to similar ID/IG values for CCN samples, their share is not directly related to the amount of incorporated N. Characterization by nitrogen adsorption showed that overall specific surface and maximum mesopores are achieved in CCN sample with medium nitrogen concentration. Results of cyclic voltammetry experiments demonstrated maximum capacitance for CCN sample with smallest N wt.% indicating that narrow pore size distribution and high specific surface area are dominant factors to achieve good capacitive behavior. The relatively low doping level of nitrogen reached in CCN samples may be the reason for the incomplete reduction of oxygen to hydroxide and furthermore it turned out that presence of N in the structure of CC had a negligible effect on the otherwise relatively high conductivity of CC. © 2019 Elsevier B.V.",
journal = "Materials Chemistry and Physics",
title = "Composition, structure and potential energy application of nitrogen doped carbon cryogels",
pages = "122120",
volume = "239",
doi = "10.1016/j.matchemphys.2019.122120"
}

Kalijadis, A., Gavrilov, N. M., Jokić, B. M., Gilić, M., Krstić, A. D., Pašti, I. A.,& Babić, B. M.. (2020). Composition, structure and potential energy application of nitrogen doped carbon cryogels. in Materials Chemistry and Physics, 239, 122120.
https://doi.org/10.1016/j.matchemphys.2019.122120

Kalijadis A, Gavrilov NM, Jokić BM, Gilić M, Krstić AD, Pašti IA, Babić BM. Composition, structure and potential energy application of nitrogen doped carbon cryogels. in Materials Chemistry and Physics. 2020;239:122120.
doi:10.1016/j.matchemphys.2019.122120 .

Kalijadis, Ana, Gavrilov, Nemanja M., Jokić, Bojan M., Gilić, Martina, Krstić, Aleksandar D., Pašti, Igor A., Babić, Biljana M., "Composition, structure and potential energy application of nitrogen doped carbon cryogels" in Materials Chemistry and Physics, 239 (2020):122120,
https://doi.org/10.1016/j.matchemphys.2019.122120 . .

TY  - JOUR
AU  - Maletić, Marina
AU  - Vukčević, Marija
AU  - Kalijadis, Ana
AU  - Janković-Častvan, Ivona
AU  - Dapčević, Aleksandra
AU  - Laušević, Zoran
AU  - Laušević, Mila
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4095
AB  - TiO2/carbon composites were synthesized by hydrothermal carbonization, using titanium isopropoxide and glucose precursor solution to obtain composites with Ti/C molar ratios ranging from 0.05 to 0.30. Characterization of obtained composites was performed by thermogravimetric analysis, scanning electron microscopy, nitrogen adsorption-desorption isotherms, X-ray diffraction, UV-Vis diffuse reflectance spectroscopy and Fourier transform infrared spectroscopy. The possibility of using TiO2/carbon composites as photocatalysts for UV assisted degradation of methylene blue in aqueous solution and selected pharmaceuticals from multicomponent solution was examined. It was found that increase in the glucose concentration, i.e. increased carbon content, leads to the higher porosity and increase in the share of photocatalytically active anatase phase in obtained TiO2/carbon composites. Sample obtained from the most concentrated glucose solution (TiO2/HTC4), showed the superior photocatalytic activity under UV irradiation toward both methylene blue and selected pharmaceuticals. In addition, TiO2/HTC4 show high recycling ability with degradation ratio of methylene blue higher than 81% after five cycles. Also, TiO2/HTC4 is expected to be a promising candidate for photocatalytic processes using visible light.
PB  - Elsevier, Amsterdam
T2  - Arabian Journal of Chemistry
T1  - Hydrothermal synthesis of TiO2/carbon composites and their application for removal of organic pollutants
EP  - 4397
IS  - 8
SP  - 4388
VL  - 12
DO  - 10.1016/j.arabjc.2016.06.020
ER  - 

@article{
author = "Maletić, Marina and Vukčević, Marija and Kalijadis, Ana and Janković-Častvan, Ivona and Dapčević, Aleksandra and Laušević, Zoran and Laušević, Mila",
year = "2019",
abstract = "TiO2/carbon composites were synthesized by hydrothermal carbonization, using titanium isopropoxide and glucose precursor solution to obtain composites with Ti/C molar ratios ranging from 0.05 to 0.30. Characterization of obtained composites was performed by thermogravimetric analysis, scanning electron microscopy, nitrogen adsorption-desorption isotherms, X-ray diffraction, UV-Vis diffuse reflectance spectroscopy and Fourier transform infrared spectroscopy. The possibility of using TiO2/carbon composites as photocatalysts for UV assisted degradation of methylene blue in aqueous solution and selected pharmaceuticals from multicomponent solution was examined. It was found that increase in the glucose concentration, i.e. increased carbon content, leads to the higher porosity and increase in the share of photocatalytically active anatase phase in obtained TiO2/carbon composites. Sample obtained from the most concentrated glucose solution (TiO2/HTC4), showed the superior photocatalytic activity under UV irradiation toward both methylene blue and selected pharmaceuticals. In addition, TiO2/HTC4 show high recycling ability with degradation ratio of methylene blue higher than 81% after five cycles. Also, TiO2/HTC4 is expected to be a promising candidate for photocatalytic processes using visible light.",
publisher = "Elsevier, Amsterdam",
journal = "Arabian Journal of Chemistry",
title = "Hydrothermal synthesis of TiO2/carbon composites and their application for removal of organic pollutants",
pages = "4397-4388",
number = "8",
volume = "12",
doi = "10.1016/j.arabjc.2016.06.020"
}

Maletić, M., Vukčević, M., Kalijadis, A., Janković-Častvan, I., Dapčević, A., Laušević, Z.,& Laušević, M.. (2019). Hydrothermal synthesis of TiO2/carbon composites and their application for removal of organic pollutants. in Arabian Journal of Chemistry
Elsevier, Amsterdam., 12(8), 4388-4397.
https://doi.org/10.1016/j.arabjc.2016.06.020

Maletić M, Vukčević M, Kalijadis A, Janković-Častvan I, Dapčević A, Laušević Z, Laušević M. Hydrothermal synthesis of TiO2/carbon composites and their application for removal of organic pollutants. in Arabian Journal of Chemistry. 2019;12(8):4388-4397.
doi:10.1016/j.arabjc.2016.06.020 .

Maletić, Marina, Vukčević, Marija, Kalijadis, Ana, Janković-Častvan, Ivona, Dapčević, Aleksandra, Laušević, Zoran, Laušević, Mila, "Hydrothermal synthesis of TiO2/carbon composites and their application for removal of organic pollutants" in Arabian Journal of Chemistry, 12, no. 8 (2019):4388-4397,
https://doi.org/10.1016/j.arabjc.2016.06.020 . .

TY  - JOUR
AU  - Maksin, Danijela
AU  - Vukčević, Marija
AU  - Đurkić, Tatjana
AU  - Stanišić, Ivana
AU  - Bakić, Tamara
AU  - Radomirović, Milena
AU  - Onjia, Antonije
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7100
AB  - Rare earth metals are deemed to be the materials of future due to their numerous applications including medical diagnostics, nuclear facilities, petroleum industry, etc. In this paper, multi-walled carbon nanotubes, which possess unique physicochemical properties, were evaluated as sorbents for lanthanoid gadolinium from aqueous solutions. The pH-dependent sorption behavior of Gd was studied in the pH range from 3 to 11 at room temperature (298 K). Equilibrium data over a range of initial Gd concentrations of 5−50 mg L−1 was analyzed with Langmuir, Freundlich and Redlich-Peterson models. Sorption kinetics was fitted with the pseudo-first-order, the pseudo-second-order and fractional power kinetic models.
AB  - Retke zemlje se smatraju materijalima budućnosti zahvaljujući
svojim brojnim primenama, u koje spadaju medicinska dijagnostika, nuklearna
postrojenja, naftna industrija, itd. Višeslojne ugljenične nanotube, koje imaju
jedinstvena fizičko-hemijska svojstva, u ovom radu su ispitane kao sorbenti
lantanoida gadolinijuma iz vodenih rastvora. Zavisnost sorpcije Gd od pH ispitivana je u opsegu pH 3‒11 na sobnoj temperaturi (298 K). Ravnotežna sorpcija
u opsegu početnih koncentracija 5‒50 mg L−1
analizirana je Langmirovim,
Frojndlihovim i Redlih‒Petersonovim modelima. Kinetika sorpcije analizirana
je modelima pseudoprvog reda, pseudodrugog reda i frakcionog stepena.
PB  - Academy of Sciences and Arts of the Republic of Srpska
T2  - Contemporary Materials
T1  - Gadolinium sorption on multi-walled carbon nanotubes
T1  - Sorpcija gadolinijuma na višeslojnim ugljeničnim nanotubama
EP  - 46
IS  - 1
SP  - 35
VL  - 10
DO  - 10.7251/COMEN1901035M
ER  - 

@article{
author = "Maksin, Danijela and Vukčević, Marija and Đurkić, Tatjana and Stanišić, Ivana and Bakić, Tamara and Radomirović, Milena and Onjia, Antonije",
year = "2019",
abstract = "Rare earth metals are deemed to be the materials of future due to their numerous applications including medical diagnostics, nuclear facilities, petroleum industry, etc. In this paper, multi-walled carbon nanotubes, which possess unique physicochemical properties, were evaluated as sorbents for lanthanoid gadolinium from aqueous solutions. The pH-dependent sorption behavior of Gd was studied in the pH range from 3 to 11 at room temperature (298 K). Equilibrium data over a range of initial Gd concentrations of 5−50 mg L−1 was analyzed with Langmuir, Freundlich and Redlich-Peterson models. Sorption kinetics was fitted with the pseudo-first-order, the pseudo-second-order and fractional power kinetic models., Retke zemlje se smatraju materijalima budućnosti zahvaljujući
svojim brojnim primenama, u koje spadaju medicinska dijagnostika, nuklearna
postrojenja, naftna industrija, itd. Višeslojne ugljenične nanotube, koje imaju
jedinstvena fizičko-hemijska svojstva, u ovom radu su ispitane kao sorbenti
lantanoida gadolinijuma iz vodenih rastvora. Zavisnost sorpcije Gd od pH ispitivana je u opsegu pH 3‒11 na sobnoj temperaturi (298 K). Ravnotežna sorpcija
u opsegu početnih koncentracija 5‒50 mg L−1
analizirana je Langmirovim,
Frojndlihovim i Redlih‒Petersonovim modelima. Kinetika sorpcije analizirana
je modelima pseudoprvog reda, pseudodrugog reda i frakcionog stepena.",
publisher = "Academy of Sciences and Arts of the Republic of Srpska",
journal = "Contemporary Materials",
title = "Gadolinium sorption on multi-walled carbon nanotubes, Sorpcija gadolinijuma na višeslojnim ugljeničnim nanotubama",
pages = "46-35",
number = "1",
volume = "10",
doi = "10.7251/COMEN1901035M"
}

Maksin, D., Vukčević, M., Đurkić, T., Stanišić, I., Bakić, T., Radomirović, M.,& Onjia, A.. (2019). Gadolinium sorption on multi-walled carbon nanotubes. in Contemporary Materials
Academy of Sciences and Arts of the Republic of Srpska., 10(1), 35-46.
https://doi.org/10.7251/COMEN1901035M

Maksin D, Vukčević M, Đurkić T, Stanišić I, Bakić T, Radomirović M, Onjia A. Gadolinium sorption on multi-walled carbon nanotubes. in Contemporary Materials. 2019;10(1):35-46.
doi:10.7251/COMEN1901035M .

Maksin, Danijela, Vukčević, Marija, Đurkić, Tatjana, Stanišić, Ivana, Bakić, Tamara, Radomirović, Milena, Onjia, Antonije, "Gadolinium sorption on multi-walled carbon nanotubes" in Contemporary Materials, 10, no. 1 (2019):35-46,
https://doi.org/10.7251/COMEN1901035M . .

TY  - JOUR
AU  - Lalović, Bojana
AU  - Đurkić, Tatjana
AU  - Vukčević, Marija
AU  - Janković-Častvan, Ivona
AU  - Kalijadis, Ana
AU  - Laušević, Zoran
AU  - Laušević, Mila
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3577
AB  - In this paper, pristine and chemically treated multi-walled carbon nanotubes (MWCNTs) were employed as solid-phase extraction sorbents for the isolation and enrichment of multi-class pharmaceuticals from the surface water and groundwater, prior to liquid chromatography-tandem mass spectrometry analysis. Thirteen pharmaceuticals that belong to different therapeutical classes (erythromycin, azithromycin, sulfamethoxazole, diazepam, lorazepam, carbamazepine, metoprolol, bisoprolol, enalapril, cilazapril, simvastatin, clopidogrel, diclofenac) and two metabolites of metamizole (4-acetylaminoantipyrine and 4-formylaminoantipyrine) were selected for this study. The influence of chemical treatment on MWCNT surface characteristics and extraction efficiency was studied, and it was shown that HCl treatment of MWCNT leads to a decrease in the amount of surface oxygen groups and at the same time favorably affects the efficiency toward extraction of selected pharmaceuticals. After the optimization of the SPE procedure, the following conditions were chosen: 50 mg of HCl-treated MCWNT as a sorbent, 100 mL of water sample at pH 6, and 15 mL of the methanol-dichloromethane mixture (1:1, v/v) as eluent. Under optimal conditions, high recoveries (79-119%), as well as low detection (0.2 to 103 ng L-1) and quantitation (0.5-345 ng L-1) limits, were obtained. The optimized method was applied to the analysis of five surface water and two groundwater samples, and three pharmaceuticals were detected, the antiepileptic drug carbamazepine and two metabolites of antipyretic metamizole.
PB  - Springer Heidelberg, Heidelberg
T2  - Environmental Science and Pollution Research
T1  - Solid-phase extraction of multi-class pharmaceuticals from environmental water samples onto modified multi-walled carbon nanotubes followed by LC-MS/MS
EP  - 20793
IS  - 25
SP  - 20784
VL  - 24
DO  - 10.1007/s11356-017-9748-0
ER  - 

@article{
author = "Lalović, Bojana and Đurkić, Tatjana and Vukčević, Marija and Janković-Častvan, Ivona and Kalijadis, Ana and Laušević, Zoran and Laušević, Mila",
year = "2017",
abstract = "In this paper, pristine and chemically treated multi-walled carbon nanotubes (MWCNTs) were employed as solid-phase extraction sorbents for the isolation and enrichment of multi-class pharmaceuticals from the surface water and groundwater, prior to liquid chromatography-tandem mass spectrometry analysis. Thirteen pharmaceuticals that belong to different therapeutical classes (erythromycin, azithromycin, sulfamethoxazole, diazepam, lorazepam, carbamazepine, metoprolol, bisoprolol, enalapril, cilazapril, simvastatin, clopidogrel, diclofenac) and two metabolites of metamizole (4-acetylaminoantipyrine and 4-formylaminoantipyrine) were selected for this study. The influence of chemical treatment on MWCNT surface characteristics and extraction efficiency was studied, and it was shown that HCl treatment of MWCNT leads to a decrease in the amount of surface oxygen groups and at the same time favorably affects the efficiency toward extraction of selected pharmaceuticals. After the optimization of the SPE procedure, the following conditions were chosen: 50 mg of HCl-treated MCWNT as a sorbent, 100 mL of water sample at pH 6, and 15 mL of the methanol-dichloromethane mixture (1:1, v/v) as eluent. Under optimal conditions, high recoveries (79-119%), as well as low detection (0.2 to 103 ng L-1) and quantitation (0.5-345 ng L-1) limits, were obtained. The optimized method was applied to the analysis of five surface water and two groundwater samples, and three pharmaceuticals were detected, the antiepileptic drug carbamazepine and two metabolites of antipyretic metamizole.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Environmental Science and Pollution Research",
title = "Solid-phase extraction of multi-class pharmaceuticals from environmental water samples onto modified multi-walled carbon nanotubes followed by LC-MS/MS",
pages = "20793-20784",
number = "25",
volume = "24",
doi = "10.1007/s11356-017-9748-0"
}

Lalović, B., Đurkić, T., Vukčević, M., Janković-Častvan, I., Kalijadis, A., Laušević, Z.,& Laušević, M.. (2017). Solid-phase extraction of multi-class pharmaceuticals from environmental water samples onto modified multi-walled carbon nanotubes followed by LC-MS/MS. in Environmental Science and Pollution Research
Springer Heidelberg, Heidelberg., 24(25), 20784-20793.
https://doi.org/10.1007/s11356-017-9748-0

Lalović B, Đurkić T, Vukčević M, Janković-Častvan I, Kalijadis A, Laušević Z, Laušević M. Solid-phase extraction of multi-class pharmaceuticals from environmental water samples onto modified multi-walled carbon nanotubes followed by LC-MS/MS. in Environmental Science and Pollution Research. 2017;24(25):20784-20793.
doi:10.1007/s11356-017-9748-0 .

Lalović, Bojana, Đurkić, Tatjana, Vukčević, Marija, Janković-Častvan, Ivona, Kalijadis, Ana, Laušević, Zoran, Laušević, Mila, "Solid-phase extraction of multi-class pharmaceuticals from environmental water samples onto modified multi-walled carbon nanotubes followed by LC-MS/MS" in Environmental Science and Pollution Research, 24, no. 25 (2017):20784-20793,
https://doi.org/10.1007/s11356-017-9748-0 . .

TY  - JOUR
AU  - Kalijadis, Ana
AU  - Đorđević, Jelena S.
AU  - Papp, Zsigmond
AU  - Jokić, Bojan M.
AU  - Spasojević, Vuk D.
AU  - Babić, Biljana M.
AU  - Trtić-Petrović, Tatjana M.
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5813
AB  - In this work, a new carbon paste electrode, prepared from nitrogen-doped hydrothermal carbon (CHTCN) was applied for the electrochemical detection and determination of carbendazim fungicide. CHTCN samples with the nominal nitrogen content 0.05-0.5 wt. % in glucose precursor were prepared by simple, low-cost synthesis with the accompanying carbonization to 1273 K. The presence of nitrogen in CHTCN samples was confirmed by elemental analysis. Characterization of CHTCN as material for carbon paste electrode was achieved by cyclic voltammetry measurement of the Fe(CN)(6)(3-/4-) redox couple. The results showed that best electrochemical response was obtained from the sample with a nominal nitrogen concentration of 0.1 wt. % and with tricresyl phosphate as a binder. During the development of a differential pulse stripping voltammetric method for carbendazim determination applying new electrode, the following experimental parameters were studied: the sort and amount of binding liquid, the effect of pH, accumulation potential and accumulation time. Under optimal conditions, the electrode offered linearity in the wide concentration range from 25 to 490 ng cm(-3) and an estimated detection limit of 1.21 ng cm(-3). Moreover, the electrode showed good stability, high selectivity and satisfactory anti-interference ability. Finally, the developed method was successfully applied for the determination of carbendazim traces in spiked tap and river water samples.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - A novel carbon paste electrode based on nitrogen-doped hydrothermal carbon for electrochemical determination of carbendazim
EP  - 1272
IS  - 11
SP  - 1259
VL  - 82
DO  - 10.2298/JSC161228053K
ER  - 

@article{
author = "Kalijadis, Ana and Đorđević, Jelena S. and Papp, Zsigmond and Jokić, Bojan M. and Spasojević, Vuk D. and Babić, Biljana M. and Trtić-Petrović, Tatjana M.",
year = "2017",
abstract = "In this work, a new carbon paste electrode, prepared from nitrogen-doped hydrothermal carbon (CHTCN) was applied for the electrochemical detection and determination of carbendazim fungicide. CHTCN samples with the nominal nitrogen content 0.05-0.5 wt. % in glucose precursor were prepared by simple, low-cost synthesis with the accompanying carbonization to 1273 K. The presence of nitrogen in CHTCN samples was confirmed by elemental analysis. Characterization of CHTCN as material for carbon paste electrode was achieved by cyclic voltammetry measurement of the Fe(CN)(6)(3-/4-) redox couple. The results showed that best electrochemical response was obtained from the sample with a nominal nitrogen concentration of 0.1 wt. % and with tricresyl phosphate as a binder. During the development of a differential pulse stripping voltammetric method for carbendazim determination applying new electrode, the following experimental parameters were studied: the sort and amount of binding liquid, the effect of pH, accumulation potential and accumulation time. Under optimal conditions, the electrode offered linearity in the wide concentration range from 25 to 490 ng cm(-3) and an estimated detection limit of 1.21 ng cm(-3). Moreover, the electrode showed good stability, high selectivity and satisfactory anti-interference ability. Finally, the developed method was successfully applied for the determination of carbendazim traces in spiked tap and river water samples.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "A novel carbon paste electrode based on nitrogen-doped hydrothermal carbon for electrochemical determination of carbendazim",
pages = "1272-1259",
number = "11",
volume = "82",
doi = "10.2298/JSC161228053K"
}

Kalijadis, A., Đorđević, J. S., Papp, Z., Jokić, B. M., Spasojević, V. D., Babić, B. M.,& Trtić-Petrović, T. M.. (2017). A novel carbon paste electrode based on nitrogen-doped hydrothermal carbon for electrochemical determination of carbendazim. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 82(11), 1259-1272.
https://doi.org/10.2298/JSC161228053K

Kalijadis A, Đorđević JS, Papp Z, Jokić BM, Spasojević VD, Babić BM, Trtić-Petrović TM. A novel carbon paste electrode based on nitrogen-doped hydrothermal carbon for electrochemical determination of carbendazim. in Journal of the Serbian Chemical Society. 2017;82(11):1259-1272.
doi:10.2298/JSC161228053K .

Kalijadis, Ana, Đorđević, Jelena S., Papp, Zsigmond, Jokić, Bojan M., Spasojević, Vuk D., Babić, Biljana M., Trtić-Petrović, Tatjana M., "A novel carbon paste electrode based on nitrogen-doped hydrothermal carbon for electrochemical determination of carbendazim" in Journal of the Serbian Chemical Society, 82, no. 11 (2017):1259-1272,
https://doi.org/10.2298/JSC161228053K . .

TY  - JOUR
AU  - Kalijadis, Ana
AU  - Đorđević, Jelena S.
AU  - Trtić-Petrović, Tatjana M.
AU  - Vukčević, Marija
AU  - Popović, Maja
AU  - Maksimović, Vesna
AU  - Rakočević, Zlatko Lj.
AU  - Laušević, Zoran
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3074
AB  - Boron doped hydrothermal carbon microspheres were synthesized by introducing boric acid into glucose precursor solution to obtain boron concentration from 0.1 to 1 wt. %. Following hydrothermal treatment, samples were thermally treated to 1000 degrees C. For obtained samples structural and surface characterization were performed. Characterization of obtained samples as material for carbon paste electrode was achieved by measurement of the Fe (CN)(6)(3-/4-) redox couple and linuron determination. Catalytic effect of boric acid on hydrothermal reaction induced enlargement of particle size for boron doped samples. Significant reduction of specific surface area for samples with highest boron concentration was observed. Boron was substitutionally incorporated in the structure of doped samples and incorporation up to 0.6 wt. % in precursor solution generates structure ordering, which induces a reduction of surface active sites for oxygen adsorption in a greater extent. It was found that modified structural and surface characteristics are responsible for good electron transfer property of carbon paste electrode based on doped samples with nominal boron concentration range from 0.2 to 0.6 wt. %. However, it has been shown that sample with nominal boron concentration of 0.2 wt. % proved to be most promising candidate as a material for carbon paste electrode.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Carbon
T1  - Preparation of boron-doped hydrothermal carbon from glucose for carbon paste electrode
EP  - 50
SP  - 42
VL  - 95
DO  - 10.1016/j.carbon.2015.08.016
ER  - 

@article{
author = "Kalijadis, Ana and Đorđević, Jelena S. and Trtić-Petrović, Tatjana M. and Vukčević, Marija and Popović, Maja and Maksimović, Vesna and Rakočević, Zlatko Lj. and Laušević, Zoran",
year = "2015",
abstract = "Boron doped hydrothermal carbon microspheres were synthesized by introducing boric acid into glucose precursor solution to obtain boron concentration from 0.1 to 1 wt. %. Following hydrothermal treatment, samples were thermally treated to 1000 degrees C. For obtained samples structural and surface characterization were performed. Characterization of obtained samples as material for carbon paste electrode was achieved by measurement of the Fe (CN)(6)(3-/4-) redox couple and linuron determination. Catalytic effect of boric acid on hydrothermal reaction induced enlargement of particle size for boron doped samples. Significant reduction of specific surface area for samples with highest boron concentration was observed. Boron was substitutionally incorporated in the structure of doped samples and incorporation up to 0.6 wt. % in precursor solution generates structure ordering, which induces a reduction of surface active sites for oxygen adsorption in a greater extent. It was found that modified structural and surface characteristics are responsible for good electron transfer property of carbon paste electrode based on doped samples with nominal boron concentration range from 0.2 to 0.6 wt. %. However, it has been shown that sample with nominal boron concentration of 0.2 wt. % proved to be most promising candidate as a material for carbon paste electrode.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Carbon",
title = "Preparation of boron-doped hydrothermal carbon from glucose for carbon paste electrode",
pages = "50-42",
volume = "95",
doi = "10.1016/j.carbon.2015.08.016"
}

Kalijadis, A., Đorđević, J. S., Trtić-Petrović, T. M., Vukčević, M., Popović, M., Maksimović, V., Rakočević, Z. Lj.,& Laušević, Z.. (2015). Preparation of boron-doped hydrothermal carbon from glucose for carbon paste electrode. in Carbon
Pergamon-Elsevier Science Ltd, Oxford., 95, 42-50.
https://doi.org/10.1016/j.carbon.2015.08.016

Kalijadis A, Đorđević JS, Trtić-Petrović TM, Vukčević M, Popović M, Maksimović V, Rakočević ZL, Laušević Z. Preparation of boron-doped hydrothermal carbon from glucose for carbon paste electrode. in Carbon. 2015;95:42-50.
doi:10.1016/j.carbon.2015.08.016 .

Kalijadis, Ana, Đorđević, Jelena S., Trtić-Petrović, Tatjana M., Vukčević, Marija, Popović, Maja, Maksimović, Vesna, Rakočević, Zlatko Lj., Laušević, Zoran, "Preparation of boron-doped hydrothermal carbon from glucose for carbon paste electrode" in Carbon, 95 (2015):42-50,
https://doi.org/10.1016/j.carbon.2015.08.016 . .

TY  - JOUR
AU  - Maletić, Marina
AU  - Vukčević, Marija
AU  - Kalijadis, Ana
AU  - Laušević, Zoran
AU  - Laušević, Mila
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3123
AB  - The new and simple approach for deposition of catalytically active TiO2 coating on carbon monolith (CM) carrier was presented. CM photocatalysts were impregnated with TiO2 using titanium solution and thermal treatment, and their photocatalytic activity was investigated in the process of methylene blue (MB) photodegradation. For the purpose of comparison, CM composite photocatalysts were prepared by dip-coating method, which implies binder usage. The presence of TiO2 on CM carrier was confirmed by Raman spectroscopy and scanning electron microscopy. The sorption characteristics of CM and the role of adsorption in the overall process of MB removal were evaluated through amount of surface oxygen groups obtained by temperature-programmed desorption and specific surface area determined by BET method. CM has shown good adsorption properties toward MB due to high amount of surface oxygen groups and relatively high specific surface area. It was concluded that photocatalytic activity increases with CM disc thickness due to increase of MB adsorption and amount of deposited TiO2. Good photocatalytic activity achieved for samples obtained by thermal treatment is the result of better accessibility of MB solution to the TiO2 particles induced by binder absence.
PB  - Hindawi Ltd, London
T2  - Advances in Materials Science and Engineering
T1  - Photocatalytic Performance of Carbon Monolith/TiO2 Composite
VL  - 2015
DO  - 10.1155/2015/803492
ER  - 

@article{
author = "Maletić, Marina and Vukčević, Marija and Kalijadis, Ana and Laušević, Zoran and Laušević, Mila",
year = "2015",
abstract = "The new and simple approach for deposition of catalytically active TiO2 coating on carbon monolith (CM) carrier was presented. CM photocatalysts were impregnated with TiO2 using titanium solution and thermal treatment, and their photocatalytic activity was investigated in the process of methylene blue (MB) photodegradation. For the purpose of comparison, CM composite photocatalysts were prepared by dip-coating method, which implies binder usage. The presence of TiO2 on CM carrier was confirmed by Raman spectroscopy and scanning electron microscopy. The sorption characteristics of CM and the role of adsorption in the overall process of MB removal were evaluated through amount of surface oxygen groups obtained by temperature-programmed desorption and specific surface area determined by BET method. CM has shown good adsorption properties toward MB due to high amount of surface oxygen groups and relatively high specific surface area. It was concluded that photocatalytic activity increases with CM disc thickness due to increase of MB adsorption and amount of deposited TiO2. Good photocatalytic activity achieved for samples obtained by thermal treatment is the result of better accessibility of MB solution to the TiO2 particles induced by binder absence.",
publisher = "Hindawi Ltd, London",
journal = "Advances in Materials Science and Engineering",
title = "Photocatalytic Performance of Carbon Monolith/TiO2 Composite",
volume = "2015",
doi = "10.1155/2015/803492"
}

Maletić, M., Vukčević, M., Kalijadis, A., Laušević, Z.,& Laušević, M.. (2015). Photocatalytic Performance of Carbon Monolith/TiO2 Composite. in Advances in Materials Science and Engineering
Hindawi Ltd, London., 2015.
https://doi.org/10.1155/2015/803492

Maletić M, Vukčević M, Kalijadis A, Laušević Z, Laušević M. Photocatalytic Performance of Carbon Monolith/TiO2 Composite. in Advances in Materials Science and Engineering. 2015;2015.
doi:10.1155/2015/803492 .

Maletić, Marina, Vukčević, Marija, Kalijadis, Ana, Laušević, Zoran, Laušević, Mila, "Photocatalytic Performance of Carbon Monolith/TiO2 Composite" in Advances in Materials Science and Engineering, 2015 (2015),
https://doi.org/10.1155/2015/803492 . .

TY  - JOUR
AU  - Vukčević, Marija
AU  - Kalijadis, Ana
AU  - Vasiljević, Tatjana
AU  - Babić, Biljana M.
AU  - Laušević, Zoran
AU  - Laušević, Mila
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3127
AB  - The main objective of this work was to find optimal production parameters for the preparation of activated hemp fibers (ACh) with good adsorption properties toward pesticides. In order to examine the role of manufacturing parameters on ACh surface characteristics, activation process of carbonized hemp fibers was investigated by temperature programmed reaction and evolved gaseous products of activation were monitored by mass spectrometry. ACh samples were characterized by BET surface area, scanning electron microscopy and temperature-programmed desorption. KOH activation induces the reduction of oxygen groups existing on the carbonized hemp fiber surface and the formation of the more stable, predominantly anhydride groups, while porosity development correlates with both H-2 and CO, evolved during the activation, and increases with carbonization and activation temperature. Finally, the highest efficiency in pesticides removal was achieved by carbonization of waste hemp fibers and activation at 900 degrees C with KOH/carbonized material ratio of 2/1. High efficiency in pesticides removal indicates that activated hemp fibers could be successfully used as a sorbent in water purification.
PB  - Elsevier, Amsterdam
T2  - Microporous and Mesoporous Materials
T1  - Production of activated carbon derived from waste hemp (Cannabis sativa) fibers and its performance in pesticide adsorption
EP  - 165
SP  - 156
VL  - 214
DO  - 10.1016/j.micromeso.2015.05.012
ER  - 

@article{
author = "Vukčević, Marija and Kalijadis, Ana and Vasiljević, Tatjana and Babić, Biljana M. and Laušević, Zoran and Laušević, Mila",
year = "2015",
abstract = "The main objective of this work was to find optimal production parameters for the preparation of activated hemp fibers (ACh) with good adsorption properties toward pesticides. In order to examine the role of manufacturing parameters on ACh surface characteristics, activation process of carbonized hemp fibers was investigated by temperature programmed reaction and evolved gaseous products of activation were monitored by mass spectrometry. ACh samples were characterized by BET surface area, scanning electron microscopy and temperature-programmed desorption. KOH activation induces the reduction of oxygen groups existing on the carbonized hemp fiber surface and the formation of the more stable, predominantly anhydride groups, while porosity development correlates with both H-2 and CO, evolved during the activation, and increases with carbonization and activation temperature. Finally, the highest efficiency in pesticides removal was achieved by carbonization of waste hemp fibers and activation at 900 degrees C with KOH/carbonized material ratio of 2/1. High efficiency in pesticides removal indicates that activated hemp fibers could be successfully used as a sorbent in water purification.",
publisher = "Elsevier, Amsterdam",
journal = "Microporous and Mesoporous Materials",
title = "Production of activated carbon derived from waste hemp (Cannabis sativa) fibers and its performance in pesticide adsorption",
pages = "165-156",
volume = "214",
doi = "10.1016/j.micromeso.2015.05.012"
}

Vukčević, M., Kalijadis, A., Vasiljević, T., Babić, B. M., Laušević, Z.,& Laušević, M.. (2015). Production of activated carbon derived from waste hemp (Cannabis sativa) fibers and its performance in pesticide adsorption. in Microporous and Mesoporous Materials
Elsevier, Amsterdam., 214, 156-165.
https://doi.org/10.1016/j.micromeso.2015.05.012

Vukčević M, Kalijadis A, Vasiljević T, Babić BM, Laušević Z, Laušević M. Production of activated carbon derived from waste hemp (Cannabis sativa) fibers and its performance in pesticide adsorption. in Microporous and Mesoporous Materials. 2015;214:156-165.
doi:10.1016/j.micromeso.2015.05.012 .

Vukčević, Marija, Kalijadis, Ana, Vasiljević, Tatjana, Babić, Biljana M., Laušević, Zoran, Laušević, Mila, "Production of activated carbon derived from waste hemp (Cannabis sativa) fibers and its performance in pesticide adsorption" in Microporous and Mesoporous Materials, 214 (2015):156-165,
https://doi.org/10.1016/j.micromeso.2015.05.012 . .

TY  - CONF
AU  - Vukčević, Marija
AU  - Lalović, Bojana
AU  - Kalijadis, Ana
AU  - Tolić, Ljiljana
AU  - Laušević, Zoran
AU  - Đurkić, Tatjana
AU  - Laušević, Mila
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7254
AB  - Predmet ovog rada bio je ispitivanje mogućnosti primene višeslojnih ugljeničnih nanocevi kao sorbenta u metodi ekstrakcije na čvrstoj fazi (eng. solid phase extraction SPE) pri analizi ostataka lekova iz vode. U cilju dobijanja SPE sorbenata različitih karakteristika, izvršeno je hemijsko modifikovanje ugljeničnih nanocevi korišćenjem 4 M KOH, 5 M HNO3 i 1 M HCl. Lekovi odabrani za analizu (metoprolol, sulfametaksazol, azitromicin, bisoprolol, enalapril, eritromicin, karbamazepin, lorazepam, klopidogrel, diklofenak, simvastatin i cilazapril) pripadaju grupama antibiotika, kardiovaskularnih lekova, analgoantipiretika i lekova za lečenje nervnog sistema, a to su istovremeneno najčešće korišćeni lekovi u Republici Srbiji. Pored lekova odabrana su i dva metabolita metamizola (4-AAA i 4-FAA), koji su u prethodnim istraživanjima često detektovani u uzorcima površinskih i podzemnih voda [2]. Za identifikaciju i kvantitativno određivanje analita korišćena je tečna hromatografija visoke performanse u sprezi sa tandem masenom spektrometrijom.
PB  - Beograd : Srpsko hemijsko društvo = Serbian Chemical Society
C3  - Knjiga izvoda = Book of Abstracts / 7. simpozijum Hemija i zaštita životne sredine sa međunarodnim učešćem = 7th Symposium Chemistry and Environmental Protection with International Participation, Palić, Srbija, 09-12. jun 2015
T1  - Ekstrakcija odabranih lekova na višeslojnim ugljeničnim nanocevima
T1  - Extraction of selected pharmaceuticals on multiwalled carbon nanotubes
EP  - 238
SP  - 237
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7254
ER  - 

@conference{
author = "Vukčević, Marija and Lalović, Bojana and Kalijadis, Ana and Tolić, Ljiljana and Laušević, Zoran and Đurkić, Tatjana and Laušević, Mila",
year = "2015",
abstract = "Predmet ovog rada bio je ispitivanje mogućnosti primene višeslojnih ugljeničnih nanocevi kao sorbenta u metodi ekstrakcije na čvrstoj fazi (eng. solid phase extraction SPE) pri analizi ostataka lekova iz vode. U cilju dobijanja SPE sorbenata različitih karakteristika, izvršeno je hemijsko modifikovanje ugljeničnih nanocevi korišćenjem 4 M KOH, 5 M HNO3 i 1 M HCl. Lekovi odabrani za analizu (metoprolol, sulfametaksazol, azitromicin, bisoprolol, enalapril, eritromicin, karbamazepin, lorazepam, klopidogrel, diklofenak, simvastatin i cilazapril) pripadaju grupama antibiotika, kardiovaskularnih lekova, analgoantipiretika i lekova za lečenje nervnog sistema, a to su istovremeneno najčešće korišćeni lekovi u Republici Srbiji. Pored lekova odabrana su i dva metabolita metamizola (4-AAA i 4-FAA), koji su u prethodnim istraživanjima često detektovani u uzorcima površinskih i podzemnih voda [2]. Za identifikaciju i kvantitativno određivanje analita korišćena je tečna hromatografija visoke performanse u sprezi sa tandem masenom spektrometrijom.",
publisher = "Beograd : Srpsko hemijsko društvo = Serbian Chemical Society",
journal = "Knjiga izvoda = Book of Abstracts / 7. simpozijum Hemija i zaštita životne sredine sa međunarodnim učešćem = 7th Symposium Chemistry and Environmental Protection with International Participation, Palić, Srbija, 09-12. jun 2015",
title = "Ekstrakcija odabranih lekova na višeslojnim ugljeničnim nanocevima, Extraction of selected pharmaceuticals on multiwalled carbon nanotubes",
pages = "238-237",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7254"
}

Vukčević, M., Lalović, B., Kalijadis, A., Tolić, L., Laušević, Z., Đurkić, T.,& Laušević, M.. (2015). Ekstrakcija odabranih lekova na višeslojnim ugljeničnim nanocevima. in Knjiga izvoda = Book of Abstracts / 7. simpozijum Hemija i zaštita životne sredine sa međunarodnim učešćem = 7th Symposium Chemistry and Environmental Protection with International Participation, Palić, Srbija, 09-12. jun 2015
Beograd : Srpsko hemijsko društvo = Serbian Chemical Society., 237-238.
https://hdl.handle.net/21.15107/rcub_technorep_7254

Vukčević M, Lalović B, Kalijadis A, Tolić L, Laušević Z, Đurkić T, Laušević M. Ekstrakcija odabranih lekova na višeslojnim ugljeničnim nanocevima. in Knjiga izvoda = Book of Abstracts / 7. simpozijum Hemija i zaštita životne sredine sa međunarodnim učešćem = 7th Symposium Chemistry and Environmental Protection with International Participation, Palić, Srbija, 09-12. jun 2015. 2015;:237-238.
https://hdl.handle.net/21.15107/rcub_technorep_7254 .

Vukčević, Marija, Lalović, Bojana, Kalijadis, Ana, Tolić, Ljiljana, Laušević, Zoran, Đurkić, Tatjana, Laušević, Mila, "Ekstrakcija odabranih lekova na višeslojnim ugljeničnim nanocevima" in Knjiga izvoda = Book of Abstracts / 7. simpozijum Hemija i zaštita životne sredine sa međunarodnim učešćem = 7th Symposium Chemistry and Environmental Protection with International Participation, Palić, Srbija, 09-12. jun 2015 (2015):237-238,
https://hdl.handle.net/21.15107/rcub_technorep_7254 .

TY  - CONF
AU  - Kalijadis, Ana
AU  - Vukčević, Marija
AU  - Maletić, Marina
AU  - Laušević, Mila
AU  - Laušević, Zoran
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6301
AB  - Boron-doped carbons were produced using hydrothermal carbonization of
glucose carbohydrates under mild temperature (180oC). Boric acid was
introduced into glucose precursor solution in order to obtained boron
concentration of 0.2% and 1%. Two types of samples were prepared:
hydrothermal carbons (HTC) and hydrothermal carbons thermally treated to
1000oC (HTCc). Characterization of the samples obtained was performed by
scanning electron microscopy (SEM) and Fourier Transform Infrared
Spectroscopy (FTIR). SEM analysis showed that higher boron concentration
in the precursor solution caused enlargement of particle size for both type of
samples, while the thermal treatment induced decrease of particle size. FTIR
spectra showed that the different amount of boron in the precursor solution
induced quite diverse effects on the surface chemistry of hydrothermal
carbons before and after the thermal treatment.
PB  - Society of Physical Chemists of Serbia
C3  - 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Proceedings
T1  - Thermal treatment influence on the surface characteristics of the boron-doped hydrothermal carbon
EP  - 682
SP  - 679
VL  - 1
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6301
ER  - 

@conference{
author = "Kalijadis, Ana and Vukčević, Marija and Maletić, Marina and Laušević, Mila and Laušević, Zoran",
year = "2014",
abstract = "Boron-doped carbons were produced using hydrothermal carbonization of
glucose carbohydrates under mild temperature (180oC). Boric acid was
introduced into glucose precursor solution in order to obtained boron
concentration of 0.2% and 1%. Two types of samples were prepared:
hydrothermal carbons (HTC) and hydrothermal carbons thermally treated to
1000oC (HTCc). Characterization of the samples obtained was performed by
scanning electron microscopy (SEM) and Fourier Transform Infrared
Spectroscopy (FTIR). SEM analysis showed that higher boron concentration
in the precursor solution caused enlargement of particle size for both type of
samples, while the thermal treatment induced decrease of particle size. FTIR
spectra showed that the different amount of boron in the precursor solution
induced quite diverse effects on the surface chemistry of hydrothermal
carbons before and after the thermal treatment.",
publisher = "Society of Physical Chemists of Serbia",
journal = "12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Proceedings",
title = "Thermal treatment influence on the surface characteristics of the boron-doped hydrothermal carbon",
pages = "682-679",
volume = "1",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6301"
}

Kalijadis, A., Vukčević, M., Maletić, M., Laušević, M.,& Laušević, Z.. (2014). Thermal treatment influence on the surface characteristics of the boron-doped hydrothermal carbon. in 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Proceedings
Society of Physical Chemists of Serbia., 1, 679-682.
https://hdl.handle.net/21.15107/rcub_technorep_6301

Kalijadis A, Vukčević M, Maletić M, Laušević M, Laušević Z. Thermal treatment influence on the surface characteristics of the boron-doped hydrothermal carbon. in 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Proceedings. 2014;1:679-682.
https://hdl.handle.net/21.15107/rcub_technorep_6301 .

Kalijadis, Ana, Vukčević, Marija, Maletić, Marina, Laušević, Mila, Laušević, Zoran, "Thermal treatment influence on the surface characteristics of the boron-doped hydrothermal carbon" in 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Proceedings, 1 (2014):679-682,
https://hdl.handle.net/21.15107/rcub_technorep_6301 .

TY  - JOUR
AU  - Vukčević, Marija
AU  - Pejić, Biljana
AU  - Kalijadis, Ana
AU  - Pajić-Lijaković, Ivana
AU  - Kostić, Mirjana
AU  - Laušević, Zoran
AU  - Laušević, Mila
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2755
AB  - Carbonized hemp fibers obtained by carbonization of origin and chemically modified waste hemp fibers was used as a low-cost sorbent for heavy metals removal. The efficiency of carbonized hemp fiber samples as a sorbent was tested through the adsorption of lead ions as a heavy metal model ion. Although changes in carbon precursor structure, induced by chemical modification, affect the sorption process and sorption capacity of carbonized hemp fibers, all carbonized hemp fibers samples show good adsorption properties toward lead ions. Obtained experimental data was used for development of the mathematical model that describes both the phenomenon of metal ions transport through the porous sorbent matrices, and the structure of carbonized hemp fibers. Effective diffusion coefficient, damping coefficient and the lead ion concentration profile within the carbonized hemp fibers, obtained as results of proposed mathematical model, give the insight in the mechanism and the rate of adsorption process, while average tortuosity connected the sorbent structure and ions transport through the sorbent. A good agreement between model prediction for both structural and ion transport model parameters and the experimental data, indicates that the proposed mathematical model can be successfully used for optimization of heavy metal ions adsorption process by correlating the model parameters to the carbonized hemp fibers performances.
PB  - Elsevier Science Sa, Lausanne
T2  - Chemical Engineering Journal
T1  - Carbon materials from waste short hemp fibers as a sorbent for heavy metal ions - Mathematical modeling of sorbent structure and ions transport
EP  - 292
SP  - 284
VL  - 235
DO  - 10.1016/j.cej.2013.09.047
ER  - 

@article{
author = "Vukčević, Marija and Pejić, Biljana and Kalijadis, Ana and Pajić-Lijaković, Ivana and Kostić, Mirjana and Laušević, Zoran and Laušević, Mila",
year = "2014",
abstract = "Carbonized hemp fibers obtained by carbonization of origin and chemically modified waste hemp fibers was used as a low-cost sorbent for heavy metals removal. The efficiency of carbonized hemp fiber samples as a sorbent was tested through the adsorption of lead ions as a heavy metal model ion. Although changes in carbon precursor structure, induced by chemical modification, affect the sorption process and sorption capacity of carbonized hemp fibers, all carbonized hemp fibers samples show good adsorption properties toward lead ions. Obtained experimental data was used for development of the mathematical model that describes both the phenomenon of metal ions transport through the porous sorbent matrices, and the structure of carbonized hemp fibers. Effective diffusion coefficient, damping coefficient and the lead ion concentration profile within the carbonized hemp fibers, obtained as results of proposed mathematical model, give the insight in the mechanism and the rate of adsorption process, while average tortuosity connected the sorbent structure and ions transport through the sorbent. A good agreement between model prediction for both structural and ion transport model parameters and the experimental data, indicates that the proposed mathematical model can be successfully used for optimization of heavy metal ions adsorption process by correlating the model parameters to the carbonized hemp fibers performances.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Chemical Engineering Journal",
title = "Carbon materials from waste short hemp fibers as a sorbent for heavy metal ions - Mathematical modeling of sorbent structure and ions transport",
pages = "292-284",
volume = "235",
doi = "10.1016/j.cej.2013.09.047"
}

Vukčević, M., Pejić, B., Kalijadis, A., Pajić-Lijaković, I., Kostić, M., Laušević, Z.,& Laušević, M.. (2014). Carbon materials from waste short hemp fibers as a sorbent for heavy metal ions - Mathematical modeling of sorbent structure and ions transport. in Chemical Engineering Journal
Elsevier Science Sa, Lausanne., 235, 284-292.
https://doi.org/10.1016/j.cej.2013.09.047

Vukčević M, Pejić B, Kalijadis A, Pajić-Lijaković I, Kostić M, Laušević Z, Laušević M. Carbon materials from waste short hemp fibers as a sorbent for heavy metal ions - Mathematical modeling of sorbent structure and ions transport. in Chemical Engineering Journal. 2014;235:284-292.
doi:10.1016/j.cej.2013.09.047 .

Vukčević, Marija, Pejić, Biljana, Kalijadis, Ana, Pajić-Lijaković, Ivana, Kostić, Mirjana, Laušević, Zoran, Laušević, Mila, "Carbon materials from waste short hemp fibers as a sorbent for heavy metal ions - Mathematical modeling of sorbent structure and ions transport" in Chemical Engineering Journal, 235 (2014):284-292,
https://doi.org/10.1016/j.cej.2013.09.047 . .

TY  - CONF
AU  - Vukašinović, Marina
AU  - Vukčević, Marija
AU  - Kalijadis, Ana
AU  - Laušević, Zoran
AU  - Laušević, Mila
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6317
PB  - Srpsko hemijsko društvo
C3  - 6th Symposium Chemistry and Environmental Protection – EnviroChem 2013, Book of Abstracts
T1  - Adsorption and photocatalytic degradation of methylene blue on carbon monolith with TiO2 coating
EP  - 265
SP  - 264
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6317
ER  - 

@conference{
author = "Vukašinović, Marina and Vukčević, Marija and Kalijadis, Ana and Laušević, Zoran and Laušević, Mila",
year = "2013",
publisher = "Srpsko hemijsko društvo",
journal = "6th Symposium Chemistry and Environmental Protection – EnviroChem 2013, Book of Abstracts",
title = "Adsorption and photocatalytic degradation of methylene blue on carbon monolith with TiO2 coating",
pages = "265-264",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6317"
}

Vukašinović, M., Vukčević, M., Kalijadis, A., Laušević, Z.,& Laušević, M.. (2013). Adsorption and photocatalytic degradation of methylene blue on carbon monolith with TiO2 coating. in 6th Symposium Chemistry and Environmental Protection – EnviroChem 2013, Book of Abstracts
Srpsko hemijsko društvo., 264-265.
https://hdl.handle.net/21.15107/rcub_technorep_6317

Vukašinović M, Vukčević M, Kalijadis A, Laušević Z, Laušević M. Adsorption and photocatalytic degradation of methylene blue on carbon monolith with TiO2 coating. in 6th Symposium Chemistry and Environmental Protection – EnviroChem 2013, Book of Abstracts. 2013;:264-265.
https://hdl.handle.net/21.15107/rcub_technorep_6317 .

Vukašinović, Marina, Vukčević, Marija, Kalijadis, Ana, Laušević, Zoran, Laušević, Mila, "Adsorption and photocatalytic degradation of methylene blue on carbon monolith with TiO2 coating" in 6th Symposium Chemistry and Environmental Protection – EnviroChem 2013, Book of Abstracts (2013):264-265,
https://hdl.handle.net/21.15107/rcub_technorep_6317 .

TY  - CONF
AU  - Kalijadis, Ana
AU  - Vukašinović, Marina
AU  - Vukčević, Marija
AU  - Laušević, Zoran
AU  - Laušević, Mila
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6327
PB  - Srpsko hemijsko društvo
C3  - 6. Simpozijum Hemija i zaštita životne sredine – EnviroChem 2013, Knjiga izvoda
T1  - Uklanjanje organskih zagađujućih materija iz vodenih rastvora korišćenjem hidrotermalnog ugljenika kao sorbenta i nosača katalizatora
EP  - 263
SP  - 262
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6327
ER  - 

@conference{
author = "Kalijadis, Ana and Vukašinović, Marina and Vukčević, Marija and Laušević, Zoran and Laušević, Mila",
year = "2013",
publisher = "Srpsko hemijsko društvo",
journal = "6. Simpozijum Hemija i zaštita životne sredine – EnviroChem 2013, Knjiga izvoda",
title = "Uklanjanje organskih zagađujućih materija iz vodenih rastvora korišćenjem hidrotermalnog ugljenika kao sorbenta i nosača katalizatora",
pages = "263-262",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6327"
}

Kalijadis, A., Vukašinović, M., Vukčević, M., Laušević, Z.,& Laušević, M.. (2013). Uklanjanje organskih zagađujućih materija iz vodenih rastvora korišćenjem hidrotermalnog ugljenika kao sorbenta i nosača katalizatora. in 6. Simpozijum Hemija i zaštita životne sredine – EnviroChem 2013, Knjiga izvoda
Srpsko hemijsko društvo., 262-263.
https://hdl.handle.net/21.15107/rcub_technorep_6327

Kalijadis A, Vukašinović M, Vukčević M, Laušević Z, Laušević M. Uklanjanje organskih zagađujućih materija iz vodenih rastvora korišćenjem hidrotermalnog ugljenika kao sorbenta i nosača katalizatora. in 6. Simpozijum Hemija i zaštita životne sredine – EnviroChem 2013, Knjiga izvoda. 2013;:262-263.
https://hdl.handle.net/21.15107/rcub_technorep_6327 .

Kalijadis, Ana, Vukašinović, Marina, Vukčević, Marija, Laušević, Zoran, Laušević, Mila, "Uklanjanje organskih zagađujućih materija iz vodenih rastvora korišćenjem hidrotermalnog ugljenika kao sorbenta i nosača katalizatora" in 6. Simpozijum Hemija i zaštita životne sredine – EnviroChem 2013, Knjiga izvoda (2013):262-263,
https://hdl.handle.net/21.15107/rcub_technorep_6327 .

TY  - JOUR
AU  - Vukčević, Marija
AU  - Kalijadis, Ana
AU  - Babić, Biljana M.
AU  - Laušević, Zoran
AU  - Laušević, Mila
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2341
AB  - The capacity of carbon monolith for pesticide removal from water, and the mechanism of pesticide interaction with the carbon surface were examined. Different carbon monolith samples were obtained by varying the carbonization and activation parameters. In order to examine the role of surface oxygen groups on pesticide adsorption, the carbon monolith surface was functionalized by chemical treatment in HNO3, H2O2 and KOH. The surface properties of the obtained samples were investigated by determination of the Brunauer, Emmett and Teller (BET) surface area, pore size distribution and temperature-programmed desorption. Adsorption of pesticides from aqueous solution onto the activated carbon monolith samples was studied using five pesticides belonging to different chemical groups (acetamiprid, dimethoate, nicosulfuron, carbofuran and atrazine). The presented results show that higher temperature of carbonization and amount of activating agent enable microporous carbon monolith with higher numbers of surface functional groups to be obtained. The adsorption properties of the activated carbon monolith were more readily affected by the number of surface functional groups than by the specific surface area. Results obtained after carbon monolith functionalization showed that π - π interactions were the driving main force for adsorption of pesticides with an aromatic structure, while acidic groups played an important role in adsorption of pesticides with no aromatic ring in their chemical structure.
AB  - U ovom radu je ispitivan kapacitet uzoraka karbon monolita za adsorpciju pesticida, kao i mehanizam interakcije pesticida sa površinom ugljeničnog materijala. Različiti uzorci karbon monolita dobijeni su variranjem parametara karbonizacije i aktivacije. U cilju ispitivanja uloge površinskih kiseoničnih grupa u adsorpciji pesticida izvršena je funkcionalizacija površine tretiranjem sa HNO3, H2O2 i KOH. Dobijeni uzorci okarakterisani su određivanjem specifične površine i raspodele pora, kao i metodom temperaturno-programirane desorpcije. Za ispitivanje adsorpcije pesticida iz vodenih rastvora korišćena je smeša pet pesticida koji pripadaju različitim hemijskim grupama (acetamiprid, dimetoat, nikosulfuron, karbo- furan i atrazin). Prikazani rezultati ukazuju na to da povećanje temperature karbonizacije, kao i udela aktivacionog agensa, omogućavaju dobijanje mikroporoznog karbon monolita sa većim sadržajem površinskih kiseoničnih grupa. Utvrđeno je da površinske kiseonične grupe imaju dominantan uticaj na adsorpcione karakteristike aktiviranih uzoraka. Dobijeni rezultati nakon funkcionalizacije površine karbon monolita pokazuju da π - π interakcije predstavljaju glavnu pokretačku silu za adsorpciju pesticida sa aromatičnom strukturom, dok kisele površinske grupe imaju vodeću ulogu u adsorpciji alifatičnih pesticida.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Influence of different carbon monolith preparation parameters on pesticide adsorption
T1  - Uticaj parametara dobijanja karbon monolita na adsorpciju pesticida
EP  - 1632
IS  - 10
SP  - 1617
VL  - 78
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2341
ER  - 

@article{
author = "Vukčević, Marija and Kalijadis, Ana and Babić, Biljana M. and Laušević, Zoran and Laušević, Mila",
year = "2013",
abstract = "The capacity of carbon monolith for pesticide removal from water, and the mechanism of pesticide interaction with the carbon surface were examined. Different carbon monolith samples were obtained by varying the carbonization and activation parameters. In order to examine the role of surface oxygen groups on pesticide adsorption, the carbon monolith surface was functionalized by chemical treatment in HNO3, H2O2 and KOH. The surface properties of the obtained samples were investigated by determination of the Brunauer, Emmett and Teller (BET) surface area, pore size distribution and temperature-programmed desorption. Adsorption of pesticides from aqueous solution onto the activated carbon monolith samples was studied using five pesticides belonging to different chemical groups (acetamiprid, dimethoate, nicosulfuron, carbofuran and atrazine). The presented results show that higher temperature of carbonization and amount of activating agent enable microporous carbon monolith with higher numbers of surface functional groups to be obtained. The adsorption properties of the activated carbon monolith were more readily affected by the number of surface functional groups than by the specific surface area. Results obtained after carbon monolith functionalization showed that π - π interactions were the driving main force for adsorption of pesticides with an aromatic structure, while acidic groups played an important role in adsorption of pesticides with no aromatic ring in their chemical structure., U ovom radu je ispitivan kapacitet uzoraka karbon monolita za adsorpciju pesticida, kao i mehanizam interakcije pesticida sa površinom ugljeničnog materijala. Različiti uzorci karbon monolita dobijeni su variranjem parametara karbonizacije i aktivacije. U cilju ispitivanja uloge površinskih kiseoničnih grupa u adsorpciji pesticida izvršena je funkcionalizacija površine tretiranjem sa HNO3, H2O2 i KOH. Dobijeni uzorci okarakterisani su određivanjem specifične površine i raspodele pora, kao i metodom temperaturno-programirane desorpcije. Za ispitivanje adsorpcije pesticida iz vodenih rastvora korišćena je smeša pet pesticida koji pripadaju različitim hemijskim grupama (acetamiprid, dimetoat, nikosulfuron, karbo- furan i atrazin). Prikazani rezultati ukazuju na to da povećanje temperature karbonizacije, kao i udela aktivacionog agensa, omogućavaju dobijanje mikroporoznog karbon monolita sa većim sadržajem površinskih kiseoničnih grupa. Utvrđeno je da površinske kiseonične grupe imaju dominantan uticaj na adsorpcione karakteristike aktiviranih uzoraka. Dobijeni rezultati nakon funkcionalizacije površine karbon monolita pokazuju da π - π interakcije predstavljaju glavnu pokretačku silu za adsorpciju pesticida sa aromatičnom strukturom, dok kisele površinske grupe imaju vodeću ulogu u adsorpciji alifatičnih pesticida.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Influence of different carbon monolith preparation parameters on pesticide adsorption, Uticaj parametara dobijanja karbon monolita na adsorpciju pesticida",
pages = "1632-1617",
number = "10",
volume = "78",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2341"
}

Vukčević, M., Kalijadis, A., Babić, B. M., Laušević, Z.,& Laušević, M.. (2013). Influence of different carbon monolith preparation parameters on pesticide adsorption. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 78(10), 1617-1632.
https://hdl.handle.net/21.15107/rcub_technorep_2341

Vukčević M, Kalijadis A, Babić BM, Laušević Z, Laušević M. Influence of different carbon monolith preparation parameters on pesticide adsorption. in Journal of the Serbian Chemical Society. 2013;78(10):1617-1632.
https://hdl.handle.net/21.15107/rcub_technorep_2341 .

Vukčević, Marija, Kalijadis, Ana, Babić, Biljana M., Laušević, Zoran, Laušević, Mila, "Influence of different carbon monolith preparation parameters on pesticide adsorption" in Journal of the Serbian Chemical Society, 78, no. 10 (2013):1617-1632,
https://hdl.handle.net/21.15107/rcub_technorep_2341 .

TY  - JOUR
AU  - Prokić, Bogomir Bolka
AU  - Bačić, G.
AU  - Prokić, B.
AU  - Kalijadis, Ana
AU  - Todorović, Vera
AU  - Puškaš, Nela
AU  - Vidojević, D.
AU  - Laušević, Mila
AU  - Laušević, Z.
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5692
AB  - In modern medicine implants are very important and so is their design and choice of materials. Almost equally important is the choice of imaging technique used to in vivo monitor their fate and biocompatibility. The aim of this study was to evaluate the ability of magnetic resonance imaging (MRI) in monitoring the biocompatibility of two newly designed carbon fibers. We have analyzed the interaction of surface functionalized carbon fibers (basic and acidic) with muscle and subcutaneous tissues of rabbits. MRI techniques showed to be useful in longitudinal monitoring of the surrounding tissues, assessment of biocompatibility of new implants, and in the distinction of in vivo surgical edema from inflammation. Histopathology confirmed MRI results, thus showing that MRI has a great potential for in vivo studies of such materials.
AB  - U modernoj medicine implanti su veoma važni, kao i njihovo dizajniranje i izbor materijala. Isto tako je značajan i izbor tehnike kojom se prati in vivo njihova sudbina i biokompatibilnost. Cilj ove studije je bila procena mogućnosti praćenja biokompatibilnosti dva novo dizajnirana karbonska vlakna pomoću magnetic resonance imaging (MRI). Analizirali smo interakciju karbonskih vlakana sa funkcionalizovanom površinom (kiselinom i bazom) sa mišićnim i potkožnim tkivom kunića. MRI tehnika se pokazala uspešnom u toku praćenja reakcije okolnog tkiva, i procene biokompatibilnosti nove vrste implanata, jer je uspela da in vivo odvoji hirurški edem od inflamacije. Patohistološka analiza je potvrdila rezultate MRI pokazujući time da MRI ima veliki potencijal za in vivo studije takvih materijala.
PB  - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
T2  - Acta Veterinaria-Beograd
T1  - In vivo MRI biocompatibility evaluation of functionalized carbon fibers in reaction with soft tissues
T1  - In vivo MRI procena biokompatibilnosti funkcionalizovanih karbonskih vlakana u reakciji sa mekim tkivom
EP  - 696
IS  - 5-6
SP  - 683
VL  - 62
DO  - 10.2298/AVB1206683P
ER  - 

@article{
author = "Prokić, Bogomir Bolka and Bačić, G. and Prokić, B. and Kalijadis, Ana and Todorović, Vera and Puškaš, Nela and Vidojević, D. and Laušević, Mila and Laušević, Z.",
year = "2012",
abstract = "In modern medicine implants are very important and so is their design and choice of materials. Almost equally important is the choice of imaging technique used to in vivo monitor their fate and biocompatibility. The aim of this study was to evaluate the ability of magnetic resonance imaging (MRI) in monitoring the biocompatibility of two newly designed carbon fibers. We have analyzed the interaction of surface functionalized carbon fibers (basic and acidic) with muscle and subcutaneous tissues of rabbits. MRI techniques showed to be useful in longitudinal monitoring of the surrounding tissues, assessment of biocompatibility of new implants, and in the distinction of in vivo surgical edema from inflammation. Histopathology confirmed MRI results, thus showing that MRI has a great potential for in vivo studies of such materials., U modernoj medicine implanti su veoma važni, kao i njihovo dizajniranje i izbor materijala. Isto tako je značajan i izbor tehnike kojom se prati in vivo njihova sudbina i biokompatibilnost. Cilj ove studije je bila procena mogućnosti praćenja biokompatibilnosti dva novo dizajnirana karbonska vlakna pomoću magnetic resonance imaging (MRI). Analizirali smo interakciju karbonskih vlakana sa funkcionalizovanom površinom (kiselinom i bazom) sa mišićnim i potkožnim tkivom kunića. MRI tehnika se pokazala uspešnom u toku praćenja reakcije okolnog tkiva, i procene biokompatibilnosti nove vrste implanata, jer je uspela da in vivo odvoji hirurški edem od inflamacije. Patohistološka analiza je potvrdila rezultate MRI pokazujući time da MRI ima veliki potencijal za in vivo studije takvih materijala.",
publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd",
journal = "Acta Veterinaria-Beograd",
title = "In vivo MRI biocompatibility evaluation of functionalized carbon fibers in reaction with soft tissues, In vivo MRI procena biokompatibilnosti funkcionalizovanih karbonskih vlakana u reakciji sa mekim tkivom",
pages = "696-683",
number = "5-6",
volume = "62",
doi = "10.2298/AVB1206683P"
}

Prokić, B. B., Bačić, G., Prokić, B., Kalijadis, A., Todorović, V., Puškaš, N., Vidojević, D., Laušević, M.,& Laušević, Z.. (2012). In vivo MRI biocompatibility evaluation of functionalized carbon fibers in reaction with soft tissues. in Acta Veterinaria-Beograd
Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 62(5-6), 683-696.
https://doi.org/10.2298/AVB1206683P

Prokić BB, Bačić G, Prokić B, Kalijadis A, Todorović V, Puškaš N, Vidojević D, Laušević M, Laušević Z. In vivo MRI biocompatibility evaluation of functionalized carbon fibers in reaction with soft tissues. in Acta Veterinaria-Beograd. 2012;62(5-6):683-696.
doi:10.2298/AVB1206683P .

Prokić, Bogomir Bolka, Bačić, G., Prokić, B., Kalijadis, Ana, Todorović, Vera, Puškaš, Nela, Vidojević, D., Laušević, Mila, Laušević, Z., "In vivo MRI biocompatibility evaluation of functionalized carbon fibers in reaction with soft tissues" in Acta Veterinaria-Beograd, 62, no. 5-6 (2012):683-696,
https://doi.org/10.2298/AVB1206683P . .

TY  - JOUR
AU  - Vukčević, Marija
AU  - Kalijadis, Ana
AU  - Radišić, Marina
AU  - Pejić, Biljana
AU  - Kostić, Mirjana
AU  - Laušević, Zoran
AU  - Laušević, Mila
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2156
AB  - There is a growing interest in utilization of abundantly available materials, bio-mass or industrial byproducts, as precursors for the preparation of carbon materials. Short hemp fibers, acquired as waste from textile production, were used as low-cost precursor for production of carbon materials as a sorbent in the solid-phase extraction, for pesticide analysis in water samples. Different carbon materials were prepared by carbonization of unmodified and chemically modified hemp fibers. Activation of carbonized materials with potassium hydroxide improves sorption properties of carbonized hemp fibers by increasing the specific surface area (up to 2192 m(2)/g) and the amount of surface oxygen groups. The following parameters that may affect the solid-phase extraction procedure efficiency were optimized: different elution solvents and the pH value of pesticide solution. Extracts were analyzed by liquid chromatography-tandem mass spectrometry technique. For this study pesticides belonging to the different chemical classes were chosen. Obtained results indicate that carbonized and activated hemp fibers could be successfully applied as a solid-phase sorbent for the pesticide analysis in water samples.
PB  - Elsevier Science Sa, Lausanne
T2  - Chemical Engineering Journal
T1  - Application of carbonized hemp fibers as a new solid-phase extraction sorbent for analysis of pesticides in water samples
EP  - 232
SP  - 224
VL  - 211
DO  - 10.1016/j.cej.2012.09.059
ER  - 

@article{
author = "Vukčević, Marija and Kalijadis, Ana and Radišić, Marina and Pejić, Biljana and Kostić, Mirjana and Laušević, Zoran and Laušević, Mila",
year = "2012",
abstract = "There is a growing interest in utilization of abundantly available materials, bio-mass or industrial byproducts, as precursors for the preparation of carbon materials. Short hemp fibers, acquired as waste from textile production, were used as low-cost precursor for production of carbon materials as a sorbent in the solid-phase extraction, for pesticide analysis in water samples. Different carbon materials were prepared by carbonization of unmodified and chemically modified hemp fibers. Activation of carbonized materials with potassium hydroxide improves sorption properties of carbonized hemp fibers by increasing the specific surface area (up to 2192 m(2)/g) and the amount of surface oxygen groups. The following parameters that may affect the solid-phase extraction procedure efficiency were optimized: different elution solvents and the pH value of pesticide solution. Extracts were analyzed by liquid chromatography-tandem mass spectrometry technique. For this study pesticides belonging to the different chemical classes were chosen. Obtained results indicate that carbonized and activated hemp fibers could be successfully applied as a solid-phase sorbent for the pesticide analysis in water samples.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Chemical Engineering Journal",
title = "Application of carbonized hemp fibers as a new solid-phase extraction sorbent for analysis of pesticides in water samples",
pages = "232-224",
volume = "211",
doi = "10.1016/j.cej.2012.09.059"
}

Vukčević, M., Kalijadis, A., Radišić, M., Pejić, B., Kostić, M., Laušević, Z.,& Laušević, M.. (2012). Application of carbonized hemp fibers as a new solid-phase extraction sorbent for analysis of pesticides in water samples. in Chemical Engineering Journal
Elsevier Science Sa, Lausanne., 211, 224-232.
https://doi.org/10.1016/j.cej.2012.09.059

Vukčević M, Kalijadis A, Radišić M, Pejić B, Kostić M, Laušević Z, Laušević M. Application of carbonized hemp fibers as a new solid-phase extraction sorbent for analysis of pesticides in water samples. in Chemical Engineering Journal. 2012;211:224-232.
doi:10.1016/j.cej.2012.09.059 .

Vukčević, Marija, Kalijadis, Ana, Radišić, Marina, Pejić, Biljana, Kostić, Mirjana, Laušević, Zoran, Laušević, Mila, "Application of carbonized hemp fibers as a new solid-phase extraction sorbent for analysis of pesticides in water samples" in Chemical Engineering Journal, 211 (2012):224-232,
https://doi.org/10.1016/j.cej.2012.09.059 . .

TY  - JOUR
AU  - Jovanovic, Zoran
AU  - Kalijadis, Ana
AU  - Vasiljević-Radović, Dana
AU  - Eric, Marko
AU  - Lausevic, Mila
AU  - Mentus, Slavko
AU  - Laušević, Zoran
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5639
AB  - Glassy carbon plates were irradiated with 15 key H(+) ion-beam in the fluence range of 1 x 10(16)-3 x 10(18) ion cm(-2). The influence of ion irradiation on surface morphology and topology was examined by scanning electron and atomic force microscopy. Structural changes were monitored by Raman spectrometry, while changes of wettability and the content of surface oxygen complexes were examined by contact angle measurements and temperature programmed desorption. Elastic recoil detection analysis was applied for determination of hydrogen concentration profiles in irradiated samples. Cyclic voltammetry was used for the assessment of the electrochemical properties of modified glassy carbon electrodes. It was concluded that there is critical fluence range (2 x 10(17)-5 x 10(17) ion cm(-2)) inside of which significant changes of glassy carbon properties occur.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Carbon
T1  - Modification of glassy carbon properties under low energy proton irradiation
EP  - 3746
IS  - 12
SP  - 3737
VL  - 49
DO  - 10.1016/j.carbon.2011.05.006
ER  - 

@article{
author = "Jovanovic, Zoran and Kalijadis, Ana and Vasiljević-Radović, Dana and Eric, Marko and Lausevic, Mila and Mentus, Slavko and Laušević, Zoran",
year = "2011",
abstract = "Glassy carbon plates were irradiated with 15 key H(+) ion-beam in the fluence range of 1 x 10(16)-3 x 10(18) ion cm(-2). The influence of ion irradiation on surface morphology and topology was examined by scanning electron and atomic force microscopy. Structural changes were monitored by Raman spectrometry, while changes of wettability and the content of surface oxygen complexes were examined by contact angle measurements and temperature programmed desorption. Elastic recoil detection analysis was applied for determination of hydrogen concentration profiles in irradiated samples. Cyclic voltammetry was used for the assessment of the electrochemical properties of modified glassy carbon electrodes. It was concluded that there is critical fluence range (2 x 10(17)-5 x 10(17) ion cm(-2)) inside of which significant changes of glassy carbon properties occur.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Carbon",
title = "Modification of glassy carbon properties under low energy proton irradiation",
pages = "3746-3737",
number = "12",
volume = "49",
doi = "10.1016/j.carbon.2011.05.006"
}

Jovanovic, Z., Kalijadis, A., Vasiljević-Radović, D., Eric, M., Lausevic, M., Mentus, S.,& Laušević, Z.. (2011). Modification of glassy carbon properties under low energy proton irradiation. in Carbon
Oxford : Pergamon-Elsevier Science Ltd., 49(12), 3737-3746.
https://doi.org/10.1016/j.carbon.2011.05.006

Jovanovic Z, Kalijadis A, Vasiljević-Radović D, Eric M, Lausevic M, Mentus S, Laušević Z. Modification of glassy carbon properties under low energy proton irradiation. in Carbon. 2011;49(12):3737-3746.
doi:10.1016/j.carbon.2011.05.006 .

Jovanovic, Zoran, Kalijadis, Ana, Vasiljević-Radović, Dana, Eric, Marko, Lausevic, Mila, Mentus, Slavko, Laušević, Zoran, "Modification of glassy carbon properties under low energy proton irradiation" in Carbon, 49, no. 12 (2011):3737-3746,
https://doi.org/10.1016/j.carbon.2011.05.006 . .

TY  - JOUR
AU  - Jovanović, Zoran M.
AU  - Pašti, Igor A.
AU  - Kalijadis, Ana
AU  - Lausevic, Mila
AU  - Mentus, Slavko V.
AU  - Laušević, Zoran
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5649
AB  - We report a particular method of Pt/glassy carbon (GC) surface formation, based on a 15 key H(+/-) ion beam irradiation of thin H(2)PtCl(6)xnH(2)O layer placed over the GC surface. Hydrogen-ion beam irradiation provided an excellent adherence of Pt deposit, unlike to any other Pt-deposition method. Furthermore, the morphology and electrochemical activity of GC/Pt catalyst obtained at the fluence of 5 x 10(17) cm(-2) was found to be sensitive to the sign of charge of hydrogen ions. The electrochemical activity of such obtained Pt/GC surface toward oxygen reduction and ethanol oxidation was compared with the activity of the Pt deposits obtained by other more common reduction procedures. (C) 2011 Elsevier B.V. All rights reserved.
T2  - Materials Letters
T1  - Platinum deposition from hydrogen-ion beam irradiated solid precursor
EP  - 2657
IS  - 17-18
SP  - 2655
VL  - 65
DO  - 10.1016/j.matlet.2011.05.015
ER  - 

@article{
author = "Jovanović, Zoran M. and Pašti, Igor A. and Kalijadis, Ana and Lausevic, Mila and Mentus, Slavko V. and Laušević, Zoran",
year = "2011",
abstract = "We report a particular method of Pt/glassy carbon (GC) surface formation, based on a 15 key H(+/-) ion beam irradiation of thin H(2)PtCl(6)xnH(2)O layer placed over the GC surface. Hydrogen-ion beam irradiation provided an excellent adherence of Pt deposit, unlike to any other Pt-deposition method. Furthermore, the morphology and electrochemical activity of GC/Pt catalyst obtained at the fluence of 5 x 10(17) cm(-2) was found to be sensitive to the sign of charge of hydrogen ions. The electrochemical activity of such obtained Pt/GC surface toward oxygen reduction and ethanol oxidation was compared with the activity of the Pt deposits obtained by other more common reduction procedures. (C) 2011 Elsevier B.V. All rights reserved.",
journal = "Materials Letters",
title = "Platinum deposition from hydrogen-ion beam irradiated solid precursor",
pages = "2657-2655",
number = "17-18",
volume = "65",
doi = "10.1016/j.matlet.2011.05.015"
}

Jovanović, Z. M., Pašti, I. A., Kalijadis, A., Lausevic, M., Mentus, S. V.,& Laušević, Z.. (2011). Platinum deposition from hydrogen-ion beam irradiated solid precursor. in Materials Letters, 65(17-18), 2655-2657.
https://doi.org/10.1016/j.matlet.2011.05.015

Jovanović ZM, Pašti IA, Kalijadis A, Lausevic M, Mentus SV, Laušević Z. Platinum deposition from hydrogen-ion beam irradiated solid precursor. in Materials Letters. 2011;65(17-18):2655-2657.
doi:10.1016/j.matlet.2011.05.015 .

Jovanović, Zoran M., Pašti, Igor A., Kalijadis, Ana, Lausevic, Mila, Mentus, Slavko V., Laušević, Zoran, "Platinum deposition from hydrogen-ion beam irradiated solid precursor" in Materials Letters, 65, no. 17-18 (2011):2655-2657,
https://doi.org/10.1016/j.matlet.2011.05.015 . .

TY  - JOUR
AU  - Kalijadis, Ana
AU  - Jovanović, Zoran M.
AU  - Laušević, Mila
AU  - Laušević, Zoran
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5660
AB  - Boron was introduced into glassy carbon by chemical modification and by irradiating the precursor polymer with boron ions. Using chemical modification, a polymer with uniform distribution of boron in the bulk was obtained, whereas irradiation with B3+ produced a polymer with boron located in a narrow region under the surface. Following modification with boron, the samples were carbonized at 1273 K and examined using X-ray diffraction, Raman spectroscopy, temperature programmed desorption (TPD) and by hardness measurements. Structural analysis results suggest that boron is mostly substitutionally bonded in the glassy carbon structure regardless of the method used to introduce boron into the polymer precursor. Formation of crosslinks between glassy carbon ribbons during carbonization as a consequence of the recombination of ion beam induced changes in the polymer structure and a high concentration of boron in the subsurface layer is proposed to account for an increase of glassy carbon hardness. An increase in the total amount of surface oxygen groups was observed in the TPD spectra of both boron-modified samples due to an increase in the number of active sites. Results show that the nature of these sites is influenced by the initial distribution of boron in the polymer precursor. (C) 2011 Elsevier Ltd. All rights reserved.
PB  - Elsevier Ltd.
T2  - Carbon
T1  - The effect of boron incorporation on the structure and properties of glassy carbon
EP  - 2678
IS  - 8
SP  - 2671
VL  - 49
DO  - 10.1016/j.carbon.2011.02.054
ER  - 

@article{
author = "Kalijadis, Ana and Jovanović, Zoran M. and Laušević, Mila and Laušević, Zoran",
year = "2011",
abstract = "Boron was introduced into glassy carbon by chemical modification and by irradiating the precursor polymer with boron ions. Using chemical modification, a polymer with uniform distribution of boron in the bulk was obtained, whereas irradiation with B3+ produced a polymer with boron located in a narrow region under the surface. Following modification with boron, the samples were carbonized at 1273 K and examined using X-ray diffraction, Raman spectroscopy, temperature programmed desorption (TPD) and by hardness measurements. Structural analysis results suggest that boron is mostly substitutionally bonded in the glassy carbon structure regardless of the method used to introduce boron into the polymer precursor. Formation of crosslinks between glassy carbon ribbons during carbonization as a consequence of the recombination of ion beam induced changes in the polymer structure and a high concentration of boron in the subsurface layer is proposed to account for an increase of glassy carbon hardness. An increase in the total amount of surface oxygen groups was observed in the TPD spectra of both boron-modified samples due to an increase in the number of active sites. Results show that the nature of these sites is influenced by the initial distribution of boron in the polymer precursor. (C) 2011 Elsevier Ltd. All rights reserved.",
publisher = "Elsevier Ltd.",
journal = "Carbon",
title = "The effect of boron incorporation on the structure and properties of glassy carbon",
pages = "2678-2671",
number = "8",
volume = "49",
doi = "10.1016/j.carbon.2011.02.054"
}

Kalijadis, A., Jovanović, Z. M., Laušević, M.,& Laušević, Z.. (2011). The effect of boron incorporation on the structure and properties of glassy carbon. in Carbon
Elsevier Ltd.., 49(8), 2671-2678.
https://doi.org/10.1016/j.carbon.2011.02.054

Kalijadis A, Jovanović ZM, Laušević M, Laušević Z. The effect of boron incorporation on the structure and properties of glassy carbon. in Carbon. 2011;49(8):2671-2678.
doi:10.1016/j.carbon.2011.02.054 .

Kalijadis, Ana, Jovanović, Zoran M., Laušević, Mila, Laušević, Zoran, "The effect of boron incorporation on the structure and properties of glassy carbon" in Carbon, 49, no. 8 (2011):2671-2678,
https://doi.org/10.1016/j.carbon.2011.02.054 . .

TY  - JOUR
AU  - Jovanović, Zoran M.
AU  - Kalijadis, Ana
AU  - Laušević, Mila
AU  - Laušević, Zoran
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5661
AB  - Glassy carbon was irradiated with 15 key H(+) ion beam. It was observed that the implanted hydrogen is unstable in material and evolves as H, H(2) and H(2)O. Post-irradiation evolution of H, H(2) and H(2)O from proton irradiated glassy carbon was monitored by temperature programmed desorption (TPD) in the period of 30 days. In between irradiation and TPD measurements the irradiated samples were stored in air. The evolution of the molecular hydrogen, although the protons are implanted deeply below the surface of the disordered glassy carbon, proceeds over the same mechanism as in the case of low-energy H-atoms chemisorbed on the very surface of an ideal graphite structure. (C) 2011 Elsevier B.V. All rights reserved.
PB  - Elsevier B.V.
T2  - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
T1  - The evolution of hydrogen from proton irradiated glassy carbon
EP  - 2583
IS  - 21
SP  - 2578
VL  - 269
DO  - 10.1016/j.nimb.2011.07.014
ER  - 

@article{
author = "Jovanović, Zoran M. and Kalijadis, Ana and Laušević, Mila and Laušević, Zoran",
year = "2011",
abstract = "Glassy carbon was irradiated with 15 key H(+) ion beam. It was observed that the implanted hydrogen is unstable in material and evolves as H, H(2) and H(2)O. Post-irradiation evolution of H, H(2) and H(2)O from proton irradiated glassy carbon was monitored by temperature programmed desorption (TPD) in the period of 30 days. In between irradiation and TPD measurements the irradiated samples were stored in air. The evolution of the molecular hydrogen, although the protons are implanted deeply below the surface of the disordered glassy carbon, proceeds over the same mechanism as in the case of low-energy H-atoms chemisorbed on the very surface of an ideal graphite structure. (C) 2011 Elsevier B.V. All rights reserved.",
publisher = "Elsevier B.V.",
journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms",
title = "The evolution of hydrogen from proton irradiated glassy carbon",
pages = "2583-2578",
number = "21",
volume = "269",
doi = "10.1016/j.nimb.2011.07.014"
}

Jovanović, Z. M., Kalijadis, A., Laušević, M.,& Laušević, Z.. (2011). The evolution of hydrogen from proton irradiated glassy carbon. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
Elsevier B.V.., 269(21), 2578-2583.
https://doi.org/10.1016/j.nimb.2011.07.014

Jovanović ZM, Kalijadis A, Laušević M, Laušević Z. The evolution of hydrogen from proton irradiated glassy carbon. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 2011;269(21):2578-2583.
doi:10.1016/j.nimb.2011.07.014 .

Jovanović, Zoran M., Kalijadis, Ana, Laušević, Mila, Laušević, Zoran, "The evolution of hydrogen from proton irradiated glassy carbon" in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 269, no. 21 (2011):2578-2583,
https://doi.org/10.1016/j.nimb.2011.07.014 . .