TY  - JOUR
AU  - Ekmeščić, Bojana
AU  - Maksin, Danijela D.
AU  - Marković, Jelena P.
AU  - Vuković, Zorica M.
AU  - Hercigonja, Radmila V.
AU  - Nastasović, Aleksandra B.
AU  - Onjia, Antonije E.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10487
AB  - The presented study describes macroporous crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) [PGME] functionalized with diethylenetriamine [PGME-deta] as a potential recovery agent for Mo(VI) oxyanions from aqueous solutions. Sorption studies were carried out by varying experimental conditions (pH, time, concentration, temperature). Kinetics of Mo(VI) sorption was investigated in batch (static) experiments, in the temperature range 298–343 K. Sorption dynamics data were fitted to seven chemical-reaction and particle-diffusion models. The kinetics studies showed that Mo(VI) sorption adhered to the pseudo-second-order model under all investigated operating conditions. The sorption kinetics was determined to be governed by both the intraparticle diffusion and the external film diffusion to a lesser extent. The temperature rise promotes the molybdate species removal, with the maximum experimental uptake capacity of 4.02 mmol g− 1 at 298 K, at the selected pH which is consistent with the predominance range of hydrolized polynuclear Mo(VI) forms and optimum electrostatic attraction.
T2  - Arabian Journal of Chemistry
T1  - Recovery of molybdenum oxyanions using macroporous copolymer grafted with diethylenetriamine
VL  - 12
IS  - 8
SP  - 3628
EP  - 3638
DO  - 10.1016/j.arabjc.2015.11.010
ER  - 

@article{
author = "Ekmeščić, Bojana and Maksin, Danijela D. and Marković, Jelena P. and Vuković, Zorica M. and Hercigonja, Radmila V. and Nastasović, Aleksandra B. and Onjia, Antonije E.",
year = "2019",
abstract = "The presented study describes macroporous crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) [PGME] functionalized with diethylenetriamine [PGME-deta] as a potential recovery agent for Mo(VI) oxyanions from aqueous solutions. Sorption studies were carried out by varying experimental conditions (pH, time, concentration, temperature). Kinetics of Mo(VI) sorption was investigated in batch (static) experiments, in the temperature range 298–343 K. Sorption dynamics data were fitted to seven chemical-reaction and particle-diffusion models. The kinetics studies showed that Mo(VI) sorption adhered to the pseudo-second-order model under all investigated operating conditions. The sorption kinetics was determined to be governed by both the intraparticle diffusion and the external film diffusion to a lesser extent. The temperature rise promotes the molybdate species removal, with the maximum experimental uptake capacity of 4.02 mmol g− 1 at 298 K, at the selected pH which is consistent with the predominance range of hydrolized polynuclear Mo(VI) forms and optimum electrostatic attraction.",
journal = "Arabian Journal of Chemistry",
title = "Recovery of molybdenum oxyanions using macroporous copolymer grafted with diethylenetriamine",
volume = "12",
number = "8",
pages = "3628-3638",
doi = "10.1016/j.arabjc.2015.11.010"
}

Ekmeščić, B., Maksin, D. D., Marković, J. P., Vuković, Z. M., Hercigonja, R. V., Nastasović, A. B.,& Onjia, A. E.. (2019). Recovery of molybdenum oxyanions using macroporous copolymer grafted with diethylenetriamine. in Arabian Journal of Chemistry, 12(8), 3628-3638.
https://doi.org/10.1016/j.arabjc.2015.11.010

Ekmeščić B, Maksin DD, Marković JP, Vuković ZM, Hercigonja RV, Nastasović AB, Onjia AE. Recovery of molybdenum oxyanions using macroporous copolymer grafted with diethylenetriamine. in Arabian Journal of Chemistry. 2019;12(8):3628-3638.
doi:10.1016/j.arabjc.2015.11.010 .

Ekmeščić, Bojana, Maksin, Danijela D., Marković, Jelena P., Vuković, Zorica M., Hercigonja, Radmila V., Nastasović, Aleksandra B., Onjia, Antonije E., "Recovery of molybdenum oxyanions using macroporous copolymer grafted with diethylenetriamine" in Arabian Journal of Chemistry, 12, no. 8 (2019):3628-3638,
https://doi.org/10.1016/j.arabjc.2015.11.010 . .

TY  - JOUR
AU  - Hercigonja, Radmila V.
AU  - Vranješ-Đurić, Sanja
AU  - Mirković, Marija D.
AU  - Marković, Bojana M.
AU  - Maksin, Danijela D.
AU  - Marković, Bojana N.
AU  - Nastasović, Aleksandra B.
PY  - 2018
UR  - http://link.springer.com/10.1007/s10967-018-5893-2
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7729
AB  - The adsorption properties of two zeolite types, faujasite (NaY, ZnY, CoY) and LTA-4A zeolite (NaA, ZnA, CoA), towards technetium were studied in batch static experiments. The Si/Al ratio, acidity, dealumination, chargebalance cations of zeolite, contact time and temperature determined the adsorption efficiency. The maximum removal efficiency of 98.8% and Kdvalue (2.06 × 10−4 cm3 g−1) was achieved using CoY (zeolite type Y). The kinetics of technetium adsorption followed the pseudo-second order model. The TcO2adsorption is mainly due to the hydrogen bonds between protons of the zeolitic structural OH groups (Bronsted acid center) and oxygen from the TcO2−.
T2  - Journal of Radioanalytical and Nuclear Chemistry
T1  - Technetium removal from the aqueous solution using zeolites A and Y containing transition metal ions Co2+ and Zn2+
VL  - 317
IS  - 1
SP  - 215
EP  - 225
DO  - 10.1007/s10967-018-5893-2
ER  - 

@article{
author = "Hercigonja, Radmila V. and Vranješ-Đurić, Sanja and Mirković, Marija D. and Marković, Bojana M. and Maksin, Danijela D. and Marković, Bojana N. and Nastasović, Aleksandra B.",
year = "2018",
abstract = "The adsorption properties of two zeolite types, faujasite (NaY, ZnY, CoY) and LTA-4A zeolite (NaA, ZnA, CoA), towards technetium were studied in batch static experiments. The Si/Al ratio, acidity, dealumination, chargebalance cations of zeolite, contact time and temperature determined the adsorption efficiency. The maximum removal efficiency of 98.8% and Kdvalue (2.06 × 10−4 cm3 g−1) was achieved using CoY (zeolite type Y). The kinetics of technetium adsorption followed the pseudo-second order model. The TcO2adsorption is mainly due to the hydrogen bonds between protons of the zeolitic structural OH groups (Bronsted acid center) and oxygen from the TcO2−.",
journal = "Journal of Radioanalytical and Nuclear Chemistry",
title = "Technetium removal from the aqueous solution using zeolites A and Y containing transition metal ions Co2+ and Zn2+",
volume = "317",
number = "1",
pages = "215-225",
doi = "10.1007/s10967-018-5893-2"
}

Hercigonja, R. V., Vranješ-Đurić, S., Mirković, M. D., Marković, B. M., Maksin, D. D., Marković, B. N.,& Nastasović, A. B.. (2018). Technetium removal from the aqueous solution using zeolites A and Y containing transition metal ions Co2+ and Zn2+. in Journal of Radioanalytical and Nuclear Chemistry, 317(1), 215-225.
https://doi.org/10.1007/s10967-018-5893-2

Hercigonja RV, Vranješ-Đurić S, Mirković MD, Marković BM, Maksin DD, Marković BN, Nastasović AB. Technetium removal from the aqueous solution using zeolites A and Y containing transition metal ions Co2+ and Zn2+. in Journal of Radioanalytical and Nuclear Chemistry. 2018;317(1):215-225.
doi:10.1007/s10967-018-5893-2 .

Hercigonja, Radmila V., Vranješ-Đurić, Sanja, Mirković, Marija D., Marković, Bojana M., Maksin, Danijela D., Marković, Bojana N., Nastasović, Aleksandra B., "Technetium removal from the aqueous solution using zeolites A and Y containing transition metal ions Co2+ and Zn2+" in Journal of Radioanalytical and Nuclear Chemistry, 317, no. 1 (2018):215-225,
https://doi.org/10.1007/s10967-018-5893-2 . .

TY  - CONF
AU  - Čebela, Maria
AU  - Hercigonja, Radmila V.
AU  - Rosić, Milena
AU  - Zagorac, Dejan
AU  - Luković, Jelena M.
AU  - Zagorac, Jelena B.
AU  - Jordanov, Dragana
AU  - Matović, Branko
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8732
AB  - Bismuth ferrite (BiFeO3) has recently drawn attention due to its outstanding multifunctional properties, as well as for being a lead-free ceramic material. In the current study, BiFeO3 nanoparticles were synthesized by strictly controlled hydrothermal process. High geometric molded particles of a small size and with high degree of purity (99.74 %) were obtained. We used nitrates of bismuth and iron as well as 8M potassium hydroxide as a basis for synthesis. The results of the X-ray diffraction study of the obtained polycrystalline material show single-phase bismuth ferrite that crystallizes with a rhombohedral lattice. Using the Rietveld method it has been determined that the particles of the synthesized powder are in a nanometric range with a particle size of about 30 nm. It was found that all reflec-tions of the obtained bismuth ferrite belong to the rhombohedral α-BiFeO3 phase which crystallizes in the space group R3c (No. 161). In addition, electronic and magnetic properties of BiFeO3 were investigated using combination of experimental and theoretical methods. HRTEM analysis confirmed existence of twin stacking faults, which are responsible for enhanced magnetic properties. EPR measurements suggested existence of electrons trapped by vacancies or defects. It has been pro-posed that Fe3+−OV defect complex could be created at elevated temperatures fol-lowed by formation of trivalent Fe ions, which intensely provide local 3d moments. The magnetic behavior of the synthesized material was studied by means of SQUID device and using a vibrating sample magnetometer (VSM). The temperature dependence of the magnetization shows the antiferomagnetic-paramagnetic phase transition at the temperature of TN = 220K, while below this temperature weak ferro-magnetic behavior has been detected. Theoretical studies were performed using a full potential linearized augmented plane-waves plus local orbital (FP(L)APW+lo) method, based on the density functional theory (DFT). In addition, a structure prediction has been performed and 11 additional BiFeO3 modifications have been pro-posed. In the next stage, an ab initio optimization of predicted structures has been performed and the structure of the γ-phase has been elucidated.
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
T1  - Comprehensive Characterization of Multiferroic BiFeO3 Powder Fabricated by the Hydrothermal Procedure
SP  - 99
EP  - 100
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8732
ER  - 

@conference{
author = "Čebela, Maria and Hercigonja, Radmila V. and Rosić, Milena and Zagorac, Dejan and Luković, Jelena M. and Zagorac, Jelena B. and Jordanov, Dragana and Matović, Branko",
year = "2018",
abstract = "Bismuth ferrite (BiFeO3) has recently drawn attention due to its outstanding multifunctional properties, as well as for being a lead-free ceramic material. In the current study, BiFeO3 nanoparticles were synthesized by strictly controlled hydrothermal process. High geometric molded particles of a small size and with high degree of purity (99.74 %) were obtained. We used nitrates of bismuth and iron as well as 8M potassium hydroxide as a basis for synthesis. The results of the X-ray diffraction study of the obtained polycrystalline material show single-phase bismuth ferrite that crystallizes with a rhombohedral lattice. Using the Rietveld method it has been determined that the particles of the synthesized powder are in a nanometric range with a particle size of about 30 nm. It was found that all reflec-tions of the obtained bismuth ferrite belong to the rhombohedral α-BiFeO3 phase which crystallizes in the space group R3c (No. 161). In addition, electronic and magnetic properties of BiFeO3 were investigated using combination of experimental and theoretical methods. HRTEM analysis confirmed existence of twin stacking faults, which are responsible for enhanced magnetic properties. EPR measurements suggested existence of electrons trapped by vacancies or defects. It has been pro-posed that Fe3+−OV defect complex could be created at elevated temperatures fol-lowed by formation of trivalent Fe ions, which intensely provide local 3d moments. The magnetic behavior of the synthesized material was studied by means of SQUID device and using a vibrating sample magnetometer (VSM). The temperature dependence of the magnetization shows the antiferomagnetic-paramagnetic phase transition at the temperature of TN = 220K, while below this temperature weak ferro-magnetic behavior has been detected. Theoretical studies were performed using a full potential linearized augmented plane-waves plus local orbital (FP(L)APW+lo) method, based on the density functional theory (DFT). In addition, a structure prediction has been performed and 11 additional BiFeO3 modifications have been pro-posed. In the next stage, an ab initio optimization of predicted structures has been performed and the structure of the γ-phase has been elucidated.",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia",
title = "Comprehensive Characterization of Multiferroic BiFeO3 Powder Fabricated by the Hydrothermal Procedure",
pages = "99-100",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8732"
}

Čebela, M., Hercigonja, R. V., Rosić, M., Zagorac, D., Luković, J. M., Zagorac, J. B., Jordanov, D.,& Matović, B.. (2018). Comprehensive Characterization of Multiferroic BiFeO3 Powder Fabricated by the Hydrothermal Procedure. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
Belgrade : Serbian Academy of Sciences and Arts., 99-100.
https://hdl.handle.net/21.15107/rcub_vinar_8732

Čebela M, Hercigonja RV, Rosić M, Zagorac D, Luković JM, Zagorac JB, Jordanov D, Matović B. Comprehensive Characterization of Multiferroic BiFeO3 Powder Fabricated by the Hydrothermal Procedure. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia. 2018;:99-100.
https://hdl.handle.net/21.15107/rcub_vinar_8732 .

Čebela, Maria, Hercigonja, Radmila V., Rosić, Milena, Zagorac, Dejan, Luković, Jelena M., Zagorac, Jelena B., Jordanov, Dragana, Matović, Branko, "Comprehensive Characterization of Multiferroic BiFeO3 Powder Fabricated by the Hydrothermal Procedure" in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia (2018):99-100,
https://hdl.handle.net/21.15107/rcub_vinar_8732 .

TY  - JOUR
AU  - Vasić, Milica M.
AU  - Čebela, Maria
AU  - Pašti, Igor A.
AU  - Amaral, Luis
AU  - Hercigonja, Radmila V.
AU  - Santos, Diogo M. F.
AU  - Šljukić, Biljana
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1943
AB  - Palladium ion-exchanged zeolite X (PdX) was prepared by zeolite impregnation with palladium acetylacetonate, followed by thermal degradation of the salt. PdX was characterised using SEM-EDS, ICP-OES and XRD. Analysis revealed presence of 7.78 wt.% of Pd in the form of PdO. Subsequently, PdX was tested for hydrogen evolution reaction (HER) in alkaline medium using linear scan voltammetry, chronoamperometry and electrochemical impedance spectroscopy measurements. The influence of addition of carbon black on the materials catalytic performance was also investigated. The HER kinetic parameters, including Tafel slope, exchange current density and activation energy, were determined. In order to provide atomic-level insights, experimental results were complemented by density functional theory calculations. It is suggested that favourable hydrogen adsorption energetics on PdO is responsible for efficient HER catalysis by this novel electrocatalyst. (c) 2017 Elsevier Ltd. All rights reserved.
T2  - Electrochimica Acta
T1  - Efficient hydrogen evolution electrocatalysis in alkaline medium using Pd-modified zeolite X
VL  - 259
SP  - 882
EP  - 892
DO  - 10.1016/j.electacta.2017.11.020
ER  - 

@article{
author = "Vasić, Milica M. and Čebela, Maria and Pašti, Igor A. and Amaral, Luis and Hercigonja, Radmila V. and Santos, Diogo M. F. and Šljukić, Biljana",
year = "2018",
abstract = "Palladium ion-exchanged zeolite X (PdX) was prepared by zeolite impregnation with palladium acetylacetonate, followed by thermal degradation of the salt. PdX was characterised using SEM-EDS, ICP-OES and XRD. Analysis revealed presence of 7.78 wt.% of Pd in the form of PdO. Subsequently, PdX was tested for hydrogen evolution reaction (HER) in alkaline medium using linear scan voltammetry, chronoamperometry and electrochemical impedance spectroscopy measurements. The influence of addition of carbon black on the materials catalytic performance was also investigated. The HER kinetic parameters, including Tafel slope, exchange current density and activation energy, were determined. In order to provide atomic-level insights, experimental results were complemented by density functional theory calculations. It is suggested that favourable hydrogen adsorption energetics on PdO is responsible for efficient HER catalysis by this novel electrocatalyst. (c) 2017 Elsevier Ltd. All rights reserved.",
journal = "Electrochimica Acta",
title = "Efficient hydrogen evolution electrocatalysis in alkaline medium using Pd-modified zeolite X",
volume = "259",
pages = "882-892",
doi = "10.1016/j.electacta.2017.11.020"
}

Vasić, M. M., Čebela, M., Pašti, I. A., Amaral, L., Hercigonja, R. V., Santos, D. M. F.,& Šljukić, B.. (2018). Efficient hydrogen evolution electrocatalysis in alkaline medium using Pd-modified zeolite X. in Electrochimica Acta, 259, 882-892.
https://doi.org/10.1016/j.electacta.2017.11.020

Vasić MM, Čebela M, Pašti IA, Amaral L, Hercigonja RV, Santos DMF, Šljukić B. Efficient hydrogen evolution electrocatalysis in alkaline medium using Pd-modified zeolite X. in Electrochimica Acta. 2018;259:882-892.
doi:10.1016/j.electacta.2017.11.020 .

Vasić, Milica M., Čebela, Maria, Pašti, Igor A., Amaral, Luis, Hercigonja, Radmila V., Santos, Diogo M. F., Šljukić, Biljana, "Efficient hydrogen evolution electrocatalysis in alkaline medium using Pd-modified zeolite X" in Electrochimica Acta, 259 (2018):882-892,
https://doi.org/10.1016/j.electacta.2017.11.020 . .

TY  - CONF
AU  - Čebela, Maria
AU  - Zagorac, Dejan
AU  - Zagorac, Jelena
AU  - Hercigonja, Radmila V.
AU  - Matović, Branko
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11537
AB  - Bismuth ferrite (BiFeO3) is one of the most studied multiferroic system. BiFeO3
has been synthesized by controlled hydrothermal process, where the particles of
small sizes and with high purity were obtained. Structural analysis showed that nonannealed powder can be perfectly fitted to rhombohedral space group R3c as αBiFeO3 phase. In addition, a structure prediction has been performed and 11
additional BiFeO3 modifications have been proposed. In the next phase, an ab initio
optimization of predicted structures has been performed and the structure of the γphase has been elucidated.
In addition, electronic and magnetic properties of BiFeO3 were investigated
using combination of experimental and theoretical methods. Theoretical studies
were performed using a full potential linearized augmented plane-waves plus local
orbital (FP(L)APW+lo) method, based on density functional theory (DFT). HRTEM
analysis confirmed existence of twin stacking faults, which are responsible for
enhanced magnetic properties. EPR measurements suggested existence of electrons
trapped by vacancies or defects, while magnetic behavior of synthesized material
was investigated by SQUID.
PB  - Institute for Multidisciplinary Research, University of Belgrade
C3  - 4CSCS-2017 : 4th Conference of the Serbian Ceramic Materials : program and the book of abstracts; June 14-16, Belgrade
T1  - BiFeO3 perovskites: theoretical and experimental investigations
SP  - 74
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11537
ER  - 

@conference{
author = "Čebela, Maria and Zagorac, Dejan and Zagorac, Jelena and Hercigonja, Radmila V. and Matović, Branko",
year = "2017",
abstract = "Bismuth ferrite (BiFeO3) is one of the most studied multiferroic system. BiFeO3
has been synthesized by controlled hydrothermal process, where the particles of
small sizes and with high purity were obtained. Structural analysis showed that nonannealed powder can be perfectly fitted to rhombohedral space group R3c as αBiFeO3 phase. In addition, a structure prediction has been performed and 11
additional BiFeO3 modifications have been proposed. In the next phase, an ab initio
optimization of predicted structures has been performed and the structure of the γphase has been elucidated.
In addition, electronic and magnetic properties of BiFeO3 were investigated
using combination of experimental and theoretical methods. Theoretical studies
were performed using a full potential linearized augmented plane-waves plus local
orbital (FP(L)APW+lo) method, based on density functional theory (DFT). HRTEM
analysis confirmed existence of twin stacking faults, which are responsible for
enhanced magnetic properties. EPR measurements suggested existence of electrons
trapped by vacancies or defects, while magnetic behavior of synthesized material
was investigated by SQUID.",
publisher = "Institute for Multidisciplinary Research, University of Belgrade",
journal = "4CSCS-2017 : 4th Conference of the Serbian Ceramic Materials : program and the book of abstracts; June 14-16, Belgrade",
title = "BiFeO3 perovskites: theoretical and experimental investigations",
pages = "74",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11537"
}

Čebela, M., Zagorac, D., Zagorac, J., Hercigonja, R. V.,& Matović, B.. (2017). BiFeO3 perovskites: theoretical and experimental investigations. in 4CSCS-2017 : 4th Conference of the Serbian Ceramic Materials : program and the book of abstracts; June 14-16, Belgrade
Institute for Multidisciplinary Research, University of Belgrade., 74.
https://hdl.handle.net/21.15107/rcub_vinar_11537

Čebela M, Zagorac D, Zagorac J, Hercigonja RV, Matović B. BiFeO3 perovskites: theoretical and experimental investigations. in 4CSCS-2017 : 4th Conference of the Serbian Ceramic Materials : program and the book of abstracts; June 14-16, Belgrade. 2017;:74.
https://hdl.handle.net/21.15107/rcub_vinar_11537 .

Čebela, Maria, Zagorac, Dejan, Zagorac, Jelena, Hercigonja, Radmila V., Matović, Branko, "BiFeO3 perovskites: theoretical and experimental investigations" in 4CSCS-2017 : 4th Conference of the Serbian Ceramic Materials : program and the book of abstracts; June 14-16, Belgrade (2017):74,
https://hdl.handle.net/21.15107/rcub_vinar_11537 .

TY  - JOUR
AU  - Marković, Bojana M.
AU  - Stefanovic, Ivan S.
AU  - Hercigonja, Radmila V.
AU  - Pergal, Marija V.
AU  - Marković, Jelena P.
AU  - Onjia, Antonije E.
AU  - Nastasović, Aleksandra B.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1501
AB  - Macroporous copolymers of poly[(glycidyl methacrylate)-co-(ethylene glycol dimethacrylate)] (PGME) with various crosslinker (ethylene glycol dimethacrylate) concentrations and porosity parameters and additionally functionalized with hexamethylene diamine (PGME-HD) were tested as potential Cr(VI) oxyanion sorbents from aqueous solutions. Kinetics of Cr(VI) sorption was investigated in the temperature range 298-343 K and the results were fitted to chemical reaction and particle diffusion models. The Cr(VI) sorption obeys the pseudo-second-order model with definite influence of pore diffusion. A temperature rise promotes chromium removal, with a maximum experimental uptake capacity of 4.21 mmol g(-1) at 343 K for the sample with the highest amino group concentration. Equilibrium data were analysed with Langmuir, Freundlich and Temkin adsorption isotherm models. Thermodynamic parameters, i.e. Gibbs free energy (G(0)), enthalpy (H-0) and entropy change (S-0) and activation energy of sorption (E-a), were calculated. The Cr(VI) adsorption onto PGME-HD was found to be spontaneous and endothermic, with increased randomness in the system. Desorption experiments show that chromium anion sorption was reversible and the PGME-HD sample GMA 60 HD was easily regenerated with 0.1 mol L-1 NaOH up to 90% recovery in the fourth sorption/desorption cycle. In the fifth cycle, a substantial sorption loss of 37% was observed. (c) 2016 Society of Chemical Industry
T2  - Polymer International
T1  - Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions
VL  - 66
IS  - 5
SP  - 679
EP  - 689
DO  - 10.1002/pi.5306
ER  - 

@article{
author = "Marković, Bojana M. and Stefanovic, Ivan S. and Hercigonja, Radmila V. and Pergal, Marija V. and Marković, Jelena P. and Onjia, Antonije E. and Nastasović, Aleksandra B.",
year = "2017",
abstract = "Macroporous copolymers of poly[(glycidyl methacrylate)-co-(ethylene glycol dimethacrylate)] (PGME) with various crosslinker (ethylene glycol dimethacrylate) concentrations and porosity parameters and additionally functionalized with hexamethylene diamine (PGME-HD) were tested as potential Cr(VI) oxyanion sorbents from aqueous solutions. Kinetics of Cr(VI) sorption was investigated in the temperature range 298-343 K and the results were fitted to chemical reaction and particle diffusion models. The Cr(VI) sorption obeys the pseudo-second-order model with definite influence of pore diffusion. A temperature rise promotes chromium removal, with a maximum experimental uptake capacity of 4.21 mmol g(-1) at 343 K for the sample with the highest amino group concentration. Equilibrium data were analysed with Langmuir, Freundlich and Temkin adsorption isotherm models. Thermodynamic parameters, i.e. Gibbs free energy (G(0)), enthalpy (H-0) and entropy change (S-0) and activation energy of sorption (E-a), were calculated. The Cr(VI) adsorption onto PGME-HD was found to be spontaneous and endothermic, with increased randomness in the system. Desorption experiments show that chromium anion sorption was reversible and the PGME-HD sample GMA 60 HD was easily regenerated with 0.1 mol L-1 NaOH up to 90% recovery in the fourth sorption/desorption cycle. In the fifth cycle, a substantial sorption loss of 37% was observed. (c) 2016 Society of Chemical Industry",
journal = "Polymer International",
title = "Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions",
volume = "66",
number = "5",
pages = "679-689",
doi = "10.1002/pi.5306"
}

Marković, B. M., Stefanovic, I. S., Hercigonja, R. V., Pergal, M. V., Marković, J. P., Onjia, A. E.,& Nastasović, A. B.. (2017). Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions. in Polymer International, 66(5), 679-689.
https://doi.org/10.1002/pi.5306

Marković BM, Stefanovic IS, Hercigonja RV, Pergal MV, Marković JP, Onjia AE, Nastasović AB. Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions. in Polymer International. 2017;66(5):679-689.
doi:10.1002/pi.5306 .

Marković, Bojana M., Stefanovic, Ivan S., Hercigonja, Radmila V., Pergal, Marija V., Marković, Jelena P., Onjia, Antonije E., Nastasović, Aleksandra B., "Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions" in Polymer International, 66, no. 5 (2017):679-689,
https://doi.org/10.1002/pi.5306 . .

TY  - JOUR
AU  - Čebela, Maria
AU  - Zagorac, Dejan
AU  - Batalović, Katarina
AU  - Radaković, Jana
AU  - Stojadinović, Bojan
AU  - Spasojević, Vojislav
AU  - Hercigonja, Radmila V.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1353
AB  - Bismuth ferrite (BiFeO3) is one of the most studied multiferroic system with a large number of published articles. This is mainly because BiFeO3 material possesses both ferromagnetic and ferroelectric properties observed at room temperature, which opens great possibility for industrial and technological applications. Well crystallized single-crystal BiFeO3 nanopowder has been successfully synthesized with the hydrothermal method. The phase composition of the synthesized samples was determined by the x-ray diffraction (XRD) analysis, and the results showed that synthesized material crystallizes in the space group R3c as alpha-BiFeO3 phase, which was confirmed by the previous experiments. In addition, a structure prediction has been performed and 11 additional BiFeO3 modifications have been proposed. In the next phase, an ab initio optimization of predicted structures has been performed and the structure of the gamma-form has been elucidated. Furthermore, electronic and magnetic properties of BiFeO3 were investigated using combination of experimental and theoretical methods. Spectroscopic Ellipsometry has been used to study electronic properties of BiFeO3, while magnetic behavior of synthesized material was investigated by SQUID. Finally, theoretical studies were performed using a full potential linearized augmented plane-waves plus local orbital (FP(L)APW+lo) method, based on density functional theory (DFT).
T2  - Ceramics International
T1  - BiFeO3 perovskites: A multidisciplinary approach to multiferroics
VL  - 43
IS  - 1
SP  - 1256
EP  - 1264
DO  - 10.1016/j.ceramint.2016.10.074
ER  - 

@article{
author = "Čebela, Maria and Zagorac, Dejan and Batalović, Katarina and Radaković, Jana and Stojadinović, Bojan and Spasojević, Vojislav and Hercigonja, Radmila V.",
year = "2017",
abstract = "Bismuth ferrite (BiFeO3) is one of the most studied multiferroic system with a large number of published articles. This is mainly because BiFeO3 material possesses both ferromagnetic and ferroelectric properties observed at room temperature, which opens great possibility for industrial and technological applications. Well crystallized single-crystal BiFeO3 nanopowder has been successfully synthesized with the hydrothermal method. The phase composition of the synthesized samples was determined by the x-ray diffraction (XRD) analysis, and the results showed that synthesized material crystallizes in the space group R3c as alpha-BiFeO3 phase, which was confirmed by the previous experiments. In addition, a structure prediction has been performed and 11 additional BiFeO3 modifications have been proposed. In the next phase, an ab initio optimization of predicted structures has been performed and the structure of the gamma-form has been elucidated. Furthermore, electronic and magnetic properties of BiFeO3 were investigated using combination of experimental and theoretical methods. Spectroscopic Ellipsometry has been used to study electronic properties of BiFeO3, while magnetic behavior of synthesized material was investigated by SQUID. Finally, theoretical studies were performed using a full potential linearized augmented plane-waves plus local orbital (FP(L)APW+lo) method, based on density functional theory (DFT).",
journal = "Ceramics International",
title = "BiFeO3 perovskites: A multidisciplinary approach to multiferroics",
volume = "43",
number = "1",
pages = "1256-1264",
doi = "10.1016/j.ceramint.2016.10.074"
}

Čebela, M., Zagorac, D., Batalović, K., Radaković, J., Stojadinović, B., Spasojević, V.,& Hercigonja, R. V.. (2017). BiFeO3 perovskites: A multidisciplinary approach to multiferroics. in Ceramics International, 43(1), 1256-1264.
https://doi.org/10.1016/j.ceramint.2016.10.074

Čebela M, Zagorac D, Batalović K, Radaković J, Stojadinović B, Spasojević V, Hercigonja RV. BiFeO3 perovskites: A multidisciplinary approach to multiferroics. in Ceramics International. 2017;43(1):1256-1264.
doi:10.1016/j.ceramint.2016.10.074 .

Čebela, Maria, Zagorac, Dejan, Batalović, Katarina, Radaković, Jana, Stojadinović, Bojan, Spasojević, Vojislav, Hercigonja, Radmila V., "BiFeO3 perovskites: A multidisciplinary approach to multiferroics" in Ceramics International, 43, no. 1 (2017):1256-1264,
https://doi.org/10.1016/j.ceramint.2016.10.074 . .

TY  - JOUR
AU  - Jovic, Aleksandar
AU  - Đorđević, Aleksandar R.
AU  - Čebela, Maria
AU  - Stojković-Simatović, Ivana
AU  - Hercigonja, Radmila V.
AU  - Šljukić, Biljana
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1263
AB  - Electrodes based on composites of zeolites with carbonized polyaniline prepared in the presence of 5-sulfosalicylic acid are evaluated for both qualitative and quantitative determination of phenols in aqueous solutions. Zeolites used included NaX and NaY, as well as their transition metal (Mn and Cu) cation-exchanged forms, and they were all characterized usingXRPD, FTIR and SEM. Cyclic voltammetry was used to study composites electrochemical response in the presence of p-nitrophenol, phenol and 5-aminophenol in acidic, neutral and al- kaline media. Linear dependence of current on p-nitrophenol concentration in acidic media was obtained in 0.11 mM concentration range. The comparative evaluation of the electrochemical response of NaX/carbonized polyaniline composite and its individual components revealed significantly lower limit of detection obtained using composite electrode (1.27 mu M) compared to that obtained using pure zeolite (135 mu M) or pure carbonized polyaniline (94.5 mu M) electrode. Composite electrode gave response to p-nitrophenol presence in neutral media as well, but it quickly disappeared with continuous scanning, while no clear response could be seen in highly alkaline media. Thus, this work demonstrates benefits of using novel composite based on zeolites and carbonized polyaniline for sensing of phenols in acidic aqueous solutions. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Journal of Electroanalytical Chemistry
T1  - Composite zeolite/carbonized polyaniline electrodes for p-nitrophenol sensing
VL  - 778
SP  - 137
EP  - 147
DO  - 10.1016/j.jelechem.2016.08.025
ER  - 

@article{
author = "Jovic, Aleksandar and Đorđević, Aleksandar R. and Čebela, Maria and Stojković-Simatović, Ivana and Hercigonja, Radmila V. and Šljukić, Biljana",
year = "2016",
abstract = "Electrodes based on composites of zeolites with carbonized polyaniline prepared in the presence of 5-sulfosalicylic acid are evaluated for both qualitative and quantitative determination of phenols in aqueous solutions. Zeolites used included NaX and NaY, as well as their transition metal (Mn and Cu) cation-exchanged forms, and they were all characterized usingXRPD, FTIR and SEM. Cyclic voltammetry was used to study composites electrochemical response in the presence of p-nitrophenol, phenol and 5-aminophenol in acidic, neutral and al- kaline media. Linear dependence of current on p-nitrophenol concentration in acidic media was obtained in 0.11 mM concentration range. The comparative evaluation of the electrochemical response of NaX/carbonized polyaniline composite and its individual components revealed significantly lower limit of detection obtained using composite electrode (1.27 mu M) compared to that obtained using pure zeolite (135 mu M) or pure carbonized polyaniline (94.5 mu M) electrode. Composite electrode gave response to p-nitrophenol presence in neutral media as well, but it quickly disappeared with continuous scanning, while no clear response could be seen in highly alkaline media. Thus, this work demonstrates benefits of using novel composite based on zeolites and carbonized polyaniline for sensing of phenols in acidic aqueous solutions. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Journal of Electroanalytical Chemistry",
title = "Composite zeolite/carbonized polyaniline electrodes for p-nitrophenol sensing",
volume = "778",
pages = "137-147",
doi = "10.1016/j.jelechem.2016.08.025"
}

Jovic, A., Đorđević, A. R., Čebela, M., Stojković-Simatović, I., Hercigonja, R. V.,& Šljukić, B.. (2016). Composite zeolite/carbonized polyaniline electrodes for p-nitrophenol sensing. in Journal of Electroanalytical Chemistry, 778, 137-147.
https://doi.org/10.1016/j.jelechem.2016.08.025

Jovic A, Đorđević AR, Čebela M, Stojković-Simatović I, Hercigonja RV, Šljukić B. Composite zeolite/carbonized polyaniline electrodes for p-nitrophenol sensing. in Journal of Electroanalytical Chemistry. 2016;778:137-147.
doi:10.1016/j.jelechem.2016.08.025 .

Jovic, Aleksandar, Đorđević, Aleksandar R., Čebela, Maria, Stojković-Simatović, Ivana, Hercigonja, Radmila V., Šljukić, Biljana, "Composite zeolite/carbonized polyaniline electrodes for p-nitrophenol sensing" in Journal of Electroanalytical Chemistry, 778 (2016):137-147,
https://doi.org/10.1016/j.jelechem.2016.08.025 . .

TY  - JOUR
AU  - Čebela, Maria
AU  - Janković, Bojan Ž.
AU  - Hercigonja, Radmila V.
AU  - Lukić, Miodrag J.
AU  - Dohčević-Mitrović, Zorana 
AU  - Milivojević, Dušan
AU  - Matović, Branko
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1411
AB  - In this paper, bismuth ferrite (BFO) particles synthesized by controlled hydrothermal process, where the particles of small sizes and with high purity were obtained. Structural analysis showed that non-annealed powder can be perfectly fitted to rhombohedral space group R3c and contains a very small amount of secondary phase, whereas the final product (annealed at 800 degrees C) represents single-phase perovskite powder with high crystallinity. HRTEM analysis confirmed existence of twin stacking faults, which are responsible for enhanced magnetic properties. EPR measurements suggested existence of electrons trapped by vacancies or defects. It has been proposed that existence of Fe3+ - O-V defect complex could be generated at elevated temperatures followed by formation of trivalent Fe ions, which intensely provide local 3d moments.
T2  - Processing and Application of Ceramics
T1  - Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure
VL  - 10
IS  - 4
SP  - 201
EP  - 208
DO  - 10.2298/PAC1604201C
ER  - 

@article{
author = "Čebela, Maria and Janković, Bojan Ž. and Hercigonja, Radmila V. and Lukić, Miodrag J. and Dohčević-Mitrović, Zorana  and Milivojević, Dušan and Matović, Branko",
year = "2016",
abstract = "In this paper, bismuth ferrite (BFO) particles synthesized by controlled hydrothermal process, where the particles of small sizes and with high purity were obtained. Structural analysis showed that non-annealed powder can be perfectly fitted to rhombohedral space group R3c and contains a very small amount of secondary phase, whereas the final product (annealed at 800 degrees C) represents single-phase perovskite powder with high crystallinity. HRTEM analysis confirmed existence of twin stacking faults, which are responsible for enhanced magnetic properties. EPR measurements suggested existence of electrons trapped by vacancies or defects. It has been proposed that existence of Fe3+ - O-V defect complex could be generated at elevated temperatures followed by formation of trivalent Fe ions, which intensely provide local 3d moments.",
journal = "Processing and Application of Ceramics",
title = "Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure",
volume = "10",
number = "4",
pages = "201-208",
doi = "10.2298/PAC1604201C"
}

Čebela, M., Janković, B. Ž., Hercigonja, R. V., Lukić, M. J., Dohčević-Mitrović, Z., Milivojević, D.,& Matović, B.. (2016). Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure. in Processing and Application of Ceramics, 10(4), 201-208.
https://doi.org/10.2298/PAC1604201C

Čebela M, Janković BŽ, Hercigonja RV, Lukić MJ, Dohčević-Mitrović Z, Milivojević D, Matović B. Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure. in Processing and Application of Ceramics. 2016;10(4):201-208.
doi:10.2298/PAC1604201C .

Čebela, Maria, Janković, Bojan Ž., Hercigonja, Radmila V., Lukić, Miodrag J., Dohčević-Mitrović, Zorana , Milivojević, Dušan, Matović, Branko, "Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure" in Processing and Application of Ceramics, 10, no. 4 (2016):201-208,
https://doi.org/10.2298/PAC1604201C . .

TY  - CONF
AU  - Čebela, Maria
AU  - Hercigonja, Radmila V.
AU  - Ilić, Svetlana
AU  - Mirković, M.
AU  - Pantić, Jelena R.
AU  - Luković, Jelena
AU  - Matović, Branko
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11538
AB  - Nanosized bismuth ferrite powder has a potential application in the production of lead free piezoelectric materials for actuators as well as magnetoelectric sensors. The simple, low-costing and energy-saving hydrothermal method has advantages over the conventional methods. BiFeO3 powders were made using Bi(NO3)35H2O and Fe(NO3)3 9H2O as starting material and 8 M KOH as mineralizer. The particle size and morphology were analyzed using scanning electron microscopy (SEM). The phase composition of obtained samples was determined by X-ray diffraction (XRD) analysis. It revealed that synthesized material crystallize in space group R3c with cell parameters a = b = 5.5780(10) Å and c = 13,863(3) Å. IR and Raman spectroscopy have been performed on the synthesized bismuth ferrite (BFO) powders in order to confirm the formation of pure and well-crystallized BFO nanocrystallites. 57Fe Mössbauer spectroscopy was performed in order to provide information on Fe cation arrangement in the BiFeO3 phase. The magnetic and optical properties of properties of BFO samples were characterized by SQUID magnetometry, and ultraviolet–visible spectroscopy. Temperature dependence of magnetization shows antiferromagnetic-paramagnetic phase transition at TN = 220 K, while below this temperature weak ferromagnetic ordering is detected.
PB  - University of Novi Sad : Faculty of Technology
C3  - 11th Conference for Young Scientists in Ceramics (SM-2015, and ESR Workshop, COST MP1208) : programme and the book of abstracts
T1  - Synthesis, optical and magnetic properties studies of multiferroic BiFeO3
SP  - 78
EP  - 78
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11538
ER  - 

@conference{
author = "Čebela, Maria and Hercigonja, Radmila V. and Ilić, Svetlana and Mirković, M. and Pantić, Jelena R. and Luković, Jelena and Matović, Branko",
year = "2015",
abstract = "Nanosized bismuth ferrite powder has a potential application in the production of lead free piezoelectric materials for actuators as well as magnetoelectric sensors. The simple, low-costing and energy-saving hydrothermal method has advantages over the conventional methods. BiFeO3 powders were made using Bi(NO3)35H2O and Fe(NO3)3 9H2O as starting material and 8 M KOH as mineralizer. The particle size and morphology were analyzed using scanning electron microscopy (SEM). The phase composition of obtained samples was determined by X-ray diffraction (XRD) analysis. It revealed that synthesized material crystallize in space group R3c with cell parameters a = b = 5.5780(10) Å and c = 13,863(3) Å. IR and Raman spectroscopy have been performed on the synthesized bismuth ferrite (BFO) powders in order to confirm the formation of pure and well-crystallized BFO nanocrystallites. 57Fe Mössbauer spectroscopy was performed in order to provide information on Fe cation arrangement in the BiFeO3 phase. The magnetic and optical properties of properties of BFO samples were characterized by SQUID magnetometry, and ultraviolet–visible spectroscopy. Temperature dependence of magnetization shows antiferromagnetic-paramagnetic phase transition at TN = 220 K, while below this temperature weak ferromagnetic ordering is detected.",
publisher = "University of Novi Sad : Faculty of Technology",
journal = "11th Conference for Young Scientists in Ceramics (SM-2015, and ESR Workshop, COST MP1208) : programme and the book of abstracts",
title = "Synthesis, optical and magnetic properties studies of multiferroic BiFeO3",
pages = "78-78",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11538"
}

Čebela, M., Hercigonja, R. V., Ilić, S., Mirković, M., Pantić, J. R., Luković, J.,& Matović, B.. (2015). Synthesis, optical and magnetic properties studies of multiferroic BiFeO3. in 11th Conference for Young Scientists in Ceramics (SM-2015, and ESR Workshop, COST MP1208) : programme and the book of abstracts
University of Novi Sad : Faculty of Technology., 78-78.
https://hdl.handle.net/21.15107/rcub_vinar_11538

Čebela M, Hercigonja RV, Ilić S, Mirković M, Pantić JR, Luković J, Matović B. Synthesis, optical and magnetic properties studies of multiferroic BiFeO3. in 11th Conference for Young Scientists in Ceramics (SM-2015, and ESR Workshop, COST MP1208) : programme and the book of abstracts. 2015;:78-78.
https://hdl.handle.net/21.15107/rcub_vinar_11538 .

Čebela, Maria, Hercigonja, Radmila V., Ilić, Svetlana, Mirković, M., Pantić, Jelena R., Luković, Jelena, Matović, Branko, "Synthesis, optical and magnetic properties studies of multiferroic BiFeO3" in 11th Conference for Young Scientists in Ceramics (SM-2015, and ESR Workshop, COST MP1208) : programme and the book of abstracts (2015):78-78,
https://hdl.handle.net/21.15107/rcub_vinar_11538 .

TY  - JOUR
AU  - Gordić, Milan V.
AU  - Bučevac, Dušan
AU  - Ružić, Jovana
AU  - Gavrilovic, Suzana
AU  - Hercigonja, Radmila V.
AU  - Stanković, Miroslav
AU  - Matović, Branko
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5841
AB  - Biomorphous beta-SiC ceramics were produced from several species of wood such as ash, wild cherry, black alder, Persian walnut, sessile oak and European hornbeam. The wood was pyrolysed, impregnated with tetraethyl orthosilicate (TEOS) sol in repeated cycles and thermally treated at 1800 degrees C in vacuum. Four specimen groups included charcoal and three groups with 1, 3 and 5 cycles of impregnation were analyzed. Flexural and compressional strength of charcoal and woodlike SiC ceramics were measured using three-point and compression testing in different directions. Experimental results showed that mechanical properties of woodceramics were improved by repeating of impregnation cycles. Porosity measurement, dilatometric analysis, XRD and SEM analysis were used to study the macroscopical and microscopical properties of the resulting biomorphic SiC ceramics. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Biomimetic synthesis and properties of cellular SiC
VL  - 40
IS  - 2
SP  - 3699
EP  - 3705
DO  - 10.1016/j.ceramint.2013.09.054
ER  - 

@article{
author = "Gordić, Milan V. and Bučevac, Dušan and Ružić, Jovana and Gavrilovic, Suzana and Hercigonja, Radmila V. and Stanković, Miroslav and Matović, Branko",
year = "2014",
abstract = "Biomorphous beta-SiC ceramics were produced from several species of wood such as ash, wild cherry, black alder, Persian walnut, sessile oak and European hornbeam. The wood was pyrolysed, impregnated with tetraethyl orthosilicate (TEOS) sol in repeated cycles and thermally treated at 1800 degrees C in vacuum. Four specimen groups included charcoal and three groups with 1, 3 and 5 cycles of impregnation were analyzed. Flexural and compressional strength of charcoal and woodlike SiC ceramics were measured using three-point and compression testing in different directions. Experimental results showed that mechanical properties of woodceramics were improved by repeating of impregnation cycles. Porosity measurement, dilatometric analysis, XRD and SEM analysis were used to study the macroscopical and microscopical properties of the resulting biomorphic SiC ceramics. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Biomimetic synthesis and properties of cellular SiC",
volume = "40",
number = "2",
pages = "3699-3705",
doi = "10.1016/j.ceramint.2013.09.054"
}

Gordić, M. V., Bučevac, D., Ružić, J., Gavrilovic, S., Hercigonja, R. V., Stanković, M.,& Matović, B.. (2014). Biomimetic synthesis and properties of cellular SiC. in Ceramics International, 40(2), 3699-3705.
https://doi.org/10.1016/j.ceramint.2013.09.054

Gordić MV, Bučevac D, Ružić J, Gavrilovic S, Hercigonja RV, Stanković M, Matović B. Biomimetic synthesis and properties of cellular SiC. in Ceramics International. 2014;40(2):3699-3705.
doi:10.1016/j.ceramint.2013.09.054 .

Gordić, Milan V., Bučevac, Dušan, Ružić, Jovana, Gavrilovic, Suzana, Hercigonja, Radmila V., Stanković, Miroslav, Matović, Branko, "Biomimetic synthesis and properties of cellular SiC" in Ceramics International, 40, no. 2 (2014):3699-3705,
https://doi.org/10.1016/j.ceramint.2013.09.054 . .

TY  - CONF
AU  - Sandić, Zvijezdana
AU  - Maksin, Danijela D.
AU  - Nastasović, Aleksandra B.
AU  - Marković, Jelena P.
AU  - Hercigonja, Radmila V.
AU  - Milutinović, Slobodan M.
AU  - Onjia, Antonije E.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9244
AB  - In order to define the favorable conditions for radioactive technetium (99Tc) 
uptake, the sorption behavior of its non-active chemical analogue rhenium 
(
75Re) on amino-functionalized macroporous hydrophilic copolymer was 
studied. The pseudo-second-order (PSO) model provided the best fit for the 
kinetic data, while the intraparticle diffusion (IPD) model indicated a 
pronounced influence of the porous structure on the sorption rates. The 
maximum sorption capacity was found to be 84 mg g-1 and 74 % removal 
efficiency was reached after 180 min in citrate buffer at pH 5.0.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Perrhenate sorption by amino-functionalized glycidyl methacrylate  copolymer: investigation of rhenium as an  analogue of radioactive technetium
VL  - J-16-P
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9244
ER  - 

@conference{
author = "Sandić, Zvijezdana and Maksin, Danijela D. and Nastasović, Aleksandra B. and Marković, Jelena P. and Hercigonja, Radmila V. and Milutinović, Slobodan M. and Onjia, Antonije E.",
year = "2014",
abstract = "In order to define the favorable conditions for radioactive technetium (99Tc) 
uptake, the sorption behavior of its non-active chemical analogue rhenium 
(
75Re) on amino-functionalized macroporous hydrophilic copolymer was 
studied. The pseudo-second-order (PSO) model provided the best fit for the 
kinetic data, while the intraparticle diffusion (IPD) model indicated a 
pronounced influence of the porous structure on the sorption rates. The 
maximum sorption capacity was found to be 84 mg g-1 and 74 % removal 
efficiency was reached after 180 min in citrate buffer at pH 5.0.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Perrhenate sorption by amino-functionalized glycidyl methacrylate  copolymer: investigation of rhenium as an  analogue of radioactive technetium",
volume = "J-16-P",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9244"
}

Sandić, Z., Maksin, D. D., Nastasović, A. B., Marković, J. P., Hercigonja, R. V., Milutinović, S. M.,& Onjia, A. E.. (2014). Perrhenate sorption by amino-functionalized glycidyl methacrylate  copolymer: investigation of rhenium as an  analogue of radioactive technetium. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., J-16-P.
https://hdl.handle.net/21.15107/rcub_vinar_9244

Sandić Z, Maksin DD, Nastasović AB, Marković JP, Hercigonja RV, Milutinović SM, Onjia AE. Perrhenate sorption by amino-functionalized glycidyl methacrylate  copolymer: investigation of rhenium as an  analogue of radioactive technetium. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;J-16-P.
https://hdl.handle.net/21.15107/rcub_vinar_9244 .

Sandić, Zvijezdana, Maksin, Danijela D., Nastasović, Aleksandra B., Marković, Jelena P., Hercigonja, Radmila V., Milutinović, Slobodan M., Onjia, Antonije E., "Perrhenate sorption by amino-functionalized glycidyl methacrylate  copolymer: investigation of rhenium as an  analogue of radioactive technetium" in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, J-16-P (2014),
https://hdl.handle.net/21.15107/rcub_vinar_9244 .

TY  - CONF
AU  - Sandić, Zvijezdana
AU  - Marković, Darka
AU  - Novaković, Tatjana
AU  - Miladinović, Zoran
AU  - Hercigonja, Radmila V.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9245
AB  - Macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate)
with attached diethylene triamine [PGME-deta] with high amino-group
content was used for the investigation of the Pd(II) sorption kinetics from
mixed chloride/nitrate aqueous solutions in acidic medium (pH 2.0) at
T=298 K. Four kinetic models were employed in order to comprehend the
mechanism of Pd(II) sorption. The maximum experimental Pd(II) sorption
capacity at initial pH 2.0 and 298 K was 20 mg g-1.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Palladium sorption by aminofunctionalized macroporous copolymer from chloride–nitrate solutions
VL  - J-17-P
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9245
ER  - 

@conference{
author = "Sandić, Zvijezdana and Marković, Darka and Novaković, Tatjana and Miladinović, Zoran and Hercigonja, Radmila V.",
year = "2014",
abstract = "Macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate)
with attached diethylene triamine [PGME-deta] with high amino-group
content was used for the investigation of the Pd(II) sorption kinetics from
mixed chloride/nitrate aqueous solutions in acidic medium (pH 2.0) at
T=298 K. Four kinetic models were employed in order to comprehend the
mechanism of Pd(II) sorption. The maximum experimental Pd(II) sorption
capacity at initial pH 2.0 and 298 K was 20 mg g-1.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Palladium sorption by aminofunctionalized macroporous copolymer from chloride–nitrate solutions",
volume = "J-17-P",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9245"
}

Sandić, Z., Marković, D., Novaković, T., Miladinović, Z.,& Hercigonja, R. V.. (2014). Palladium sorption by aminofunctionalized macroporous copolymer from chloride–nitrate solutions. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., J-17-P.
https://hdl.handle.net/21.15107/rcub_vinar_9245

Sandić Z, Marković D, Novaković T, Miladinović Z, Hercigonja RV. Palladium sorption by aminofunctionalized macroporous copolymer from chloride–nitrate solutions. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;J-17-P.
https://hdl.handle.net/21.15107/rcub_vinar_9245 .

Sandić, Zvijezdana, Marković, Darka, Novaković, Tatjana, Miladinović, Zoran, Hercigonja, Radmila V., "Palladium sorption by aminofunctionalized macroporous copolymer from chloride–nitrate solutions" in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, J-17-P (2014),
https://hdl.handle.net/21.15107/rcub_vinar_9245 .

TY  - JOUR
AU  - Hercigonja, Radmila V.
AU  - Maksin, Danijela D.
AU  - Nastasović, Aleksandra B.
AU  - Trifunović, Snežana
AU  - Glodić, Pavle B.
AU  - Onjia, Antonije E.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4562
AB  - dThe possibility of sorption of technetium-99 in the form of pertechnetate anion (TcO(4)(-)) and the sorption kinetics for removing TcO(4)(-) from aqueous solution by chelating polymers based on glycidyl methacrylate (GMA) were investigated. Two samples of macroporous crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (PGME), with different amount of the crosslinker (ethylene glycol dimethacrylate, EGDMA), were synthesized by suspension copolymerization and functionalized with diethylene triamine (deta). We propose that nonspecific sorption of pertechnetate anion via electrostatic interactions takes place at the protonated amino groups of macroporous crosslinked copolymer. The results of batch experiments per-formed at pH 1-14 showed fast sorption kinetics for removing TcO(4)(-) by amino-functionalized PGME-deta in a wide range of pH, that is, from 1.0 to 9.0. Almost complete removal of TcO(4)(-) (91-98%) was reached within 180 min in the stated pH range (1.0-9.0), with the sorption half-times of under 25 min. The partitioning coefficients of linear adsorption isotherms, with 180-min equilibrium time, reach the high values of 2130 mL g(-1) and 1698 mL g(-1) for the two samples of synthesized PGME-deta. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 123: 1273-1282, 2012
T2  - Journal of Applied Polymer Science
T1  - Adsorptive Removal of Technetium-99 Using Macroporous Poly(GMA-co-EGDMA) Modified with Diethylene Triamine
VL  - 123
IS  - 2
SP  - 1273
EP  - 1282
DO  - 10.1002/app.34693
ER  - 

@article{
author = "Hercigonja, Radmila V. and Maksin, Danijela D. and Nastasović, Aleksandra B. and Trifunović, Snežana and Glodić, Pavle B. and Onjia, Antonije E.",
year = "2012",
abstract = "dThe possibility of sorption of technetium-99 in the form of pertechnetate anion (TcO(4)(-)) and the sorption kinetics for removing TcO(4)(-) from aqueous solution by chelating polymers based on glycidyl methacrylate (GMA) were investigated. Two samples of macroporous crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (PGME), with different amount of the crosslinker (ethylene glycol dimethacrylate, EGDMA), were synthesized by suspension copolymerization and functionalized with diethylene triamine (deta). We propose that nonspecific sorption of pertechnetate anion via electrostatic interactions takes place at the protonated amino groups of macroporous crosslinked copolymer. The results of batch experiments per-formed at pH 1-14 showed fast sorption kinetics for removing TcO(4)(-) by amino-functionalized PGME-deta in a wide range of pH, that is, from 1.0 to 9.0. Almost complete removal of TcO(4)(-) (91-98%) was reached within 180 min in the stated pH range (1.0-9.0), with the sorption half-times of under 25 min. The partitioning coefficients of linear adsorption isotherms, with 180-min equilibrium time, reach the high values of 2130 mL g(-1) and 1698 mL g(-1) for the two samples of synthesized PGME-deta. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 123: 1273-1282, 2012",
journal = "Journal of Applied Polymer Science",
title = "Adsorptive Removal of Technetium-99 Using Macroporous Poly(GMA-co-EGDMA) Modified with Diethylene Triamine",
volume = "123",
number = "2",
pages = "1273-1282",
doi = "10.1002/app.34693"
}

Hercigonja, R. V., Maksin, D. D., Nastasović, A. B., Trifunović, S., Glodić, P. B.,& Onjia, A. E.. (2012). Adsorptive Removal of Technetium-99 Using Macroporous Poly(GMA-co-EGDMA) Modified with Diethylene Triamine. in Journal of Applied Polymer Science, 123(2), 1273-1282.
https://doi.org/10.1002/app.34693

Hercigonja RV, Maksin DD, Nastasović AB, Trifunović S, Glodić PB, Onjia AE. Adsorptive Removal of Technetium-99 Using Macroporous Poly(GMA-co-EGDMA) Modified with Diethylene Triamine. in Journal of Applied Polymer Science. 2012;123(2):1273-1282.
doi:10.1002/app.34693 .

Hercigonja, Radmila V., Maksin, Danijela D., Nastasović, Aleksandra B., Trifunović, Snežana, Glodić, Pavle B., Onjia, Antonije E., "Adsorptive Removal of Technetium-99 Using Macroporous Poly(GMA-co-EGDMA) Modified with Diethylene Triamine" in Journal of Applied Polymer Science, 123, no. 2 (2012):1273-1282,
https://doi.org/10.1002/app.34693 . .

TY  - JOUR
AU  - Maksin, Danijela D.
AU  - Hercigonja, Radmila V.
AU  - Lazarević, Magdalena
AU  - Žunić, Marija J.
AU  - Nastasović, Aleksandra B.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4596
AB  - Technetium-99 comprises a significant health risk, since edible plants can bioaccumulate and convert it to more lipophilic species that cannot be excreted through urine. Batch kinetics of pertechnetate removal from aqueous solutions by two samples of crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) functionalized with diethylene triamine (PGME-deta) was investigated at the optimum pH value of 3.0, and the initial solution activity of 325 MBq dm(-3). PGME-deta was characterized by elemental analysis, mercury intrusion porosimetry, and scanning electron microscopy. Five kinetic models (pseudo-first, pseudo-second order, Elovich, Bangham, and intraparticle diffusion) were used to determine the best-fit equation for pertechnetate sorption. After 24 h, PGME-deta samples sorbed more than 98% of pertechnetate present, with maximum sorption capacity of 25.5 MBq g(-1), showing good potential for remediation of slightly contaminated groundwater.
T2  - Polymer Bulletin
T1  - Modeling of kinetics of pertechnetate removal by amino-functionalized glycidyl methacrylate copolymer
VL  - 68
IS  - 2
SP  - 507
EP  - 528
DO  - 10.1007/s00289-011-0634-5
ER  - 

@article{
author = "Maksin, Danijela D. and Hercigonja, Radmila V. and Lazarević, Magdalena and Žunić, Marija J. and Nastasović, Aleksandra B.",
year = "2012",
abstract = "Technetium-99 comprises a significant health risk, since edible plants can bioaccumulate and convert it to more lipophilic species that cannot be excreted through urine. Batch kinetics of pertechnetate removal from aqueous solutions by two samples of crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) functionalized with diethylene triamine (PGME-deta) was investigated at the optimum pH value of 3.0, and the initial solution activity of 325 MBq dm(-3). PGME-deta was characterized by elemental analysis, mercury intrusion porosimetry, and scanning electron microscopy. Five kinetic models (pseudo-first, pseudo-second order, Elovich, Bangham, and intraparticle diffusion) were used to determine the best-fit equation for pertechnetate sorption. After 24 h, PGME-deta samples sorbed more than 98% of pertechnetate present, with maximum sorption capacity of 25.5 MBq g(-1), showing good potential for remediation of slightly contaminated groundwater.",
journal = "Polymer Bulletin",
title = "Modeling of kinetics of pertechnetate removal by amino-functionalized glycidyl methacrylate copolymer",
volume = "68",
number = "2",
pages = "507-528",
doi = "10.1007/s00289-011-0634-5"
}

Maksin, D. D., Hercigonja, R. V., Lazarević, M., Žunić, M. J.,& Nastasović, A. B.. (2012). Modeling of kinetics of pertechnetate removal by amino-functionalized glycidyl methacrylate copolymer. in Polymer Bulletin, 68(2), 507-528.
https://doi.org/10.1007/s00289-011-0634-5

Maksin DD, Hercigonja RV, Lazarević M, Žunić MJ, Nastasović AB. Modeling of kinetics of pertechnetate removal by amino-functionalized glycidyl methacrylate copolymer. in Polymer Bulletin. 2012;68(2):507-528.
doi:10.1007/s00289-011-0634-5 .

Maksin, Danijela D., Hercigonja, Radmila V., Lazarević, Magdalena, Žunić, Marija J., Nastasović, Aleksandra B., "Modeling of kinetics of pertechnetate removal by amino-functionalized glycidyl methacrylate copolymer" in Polymer Bulletin, 68, no. 2 (2012):507-528,
https://doi.org/10.1007/s00289-011-0634-5 . .

TY  - JOUR
AU  - Maksin, Danijela D.
AU  - Nastasović, Aleksandra B.
AU  - Milutinović-Nikolić, Aleksandra D.
AU  - Suručić, Ljiljana T.
AU  - Sandić, Zvjezdana
AU  - Hercigonja, Radmila V.
AU  - Onjia, Antonije E.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4756
AB  - Two porous and one non-porous crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) [abbreviated PGME] were prepared by suspension copolymerization and functionalized with diethylene triamine [abbreviated PGME-deta]. Samples were characterized by elemental analysis, mercury porosimetry, scanning electron microscopy with energy-dispersive X-ray spectroscopy, and transmission electron microscopy. Kinetics of Cr(VI) sorption by PGME-deta were investigated in batch static experiments, in the temperature range 25-70 degrees C. Sorption was rapid, with the uptake capacity higher than 80% after 30 min. Sorption behavior and rate-controlling mechanisms were analyzed using five kinetic models (pseudo-first order, pseudo-second order, Elovich, intraparticle diffusion and Bangham model). Kinetic studies showed that Cr(VI) adsorption adhered to the pseudo-second-order model, with definite influence of pore diffusion. Equilibrium data was tested with Langmuir, Freundlich and Tempkin adsorption isotherm models. Langmuir model was the most suitable indicating homogeneous distribution of active sites on PGME-deta and monolayer sorption. The maximum adsorption capacity from the Langmuir model, Q(max),at pH 1.8 and 25 degrees C was 143 mg g(-1) for PGME2-deta (sample with the highest amino group concentration) while at 70 degrees C Q(max) reached the high value of 198 mg g(-1). Thermodynamic parameters revealed spontaneous and endothermic nature of Cr(VI) adsorption onto PGME-deta. (C) 2012 Elsevier B.V. All rights reserved.
T2  - Journal of Hazardous Materials
T1  - Equilibrium and kinetics study on hexavalent chromium adsorption onto diethylene triamine grafted glycidyl methacrylate based copolymers
VL  - 209
SP  - 99
EP  - 110
DO  - 10.1016/j.jhazmat.2011.12.079
ER  - 

@article{
author = "Maksin, Danijela D. and Nastasović, Aleksandra B. and Milutinović-Nikolić, Aleksandra D. and Suručić, Ljiljana T. and Sandić, Zvjezdana and Hercigonja, Radmila V. and Onjia, Antonije E.",
year = "2012",
abstract = "Two porous and one non-porous crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) [abbreviated PGME] were prepared by suspension copolymerization and functionalized with diethylene triamine [abbreviated PGME-deta]. Samples were characterized by elemental analysis, mercury porosimetry, scanning electron microscopy with energy-dispersive X-ray spectroscopy, and transmission electron microscopy. Kinetics of Cr(VI) sorption by PGME-deta were investigated in batch static experiments, in the temperature range 25-70 degrees C. Sorption was rapid, with the uptake capacity higher than 80% after 30 min. Sorption behavior and rate-controlling mechanisms were analyzed using five kinetic models (pseudo-first order, pseudo-second order, Elovich, intraparticle diffusion and Bangham model). Kinetic studies showed that Cr(VI) adsorption adhered to the pseudo-second-order model, with definite influence of pore diffusion. Equilibrium data was tested with Langmuir, Freundlich and Tempkin adsorption isotherm models. Langmuir model was the most suitable indicating homogeneous distribution of active sites on PGME-deta and monolayer sorption. The maximum adsorption capacity from the Langmuir model, Q(max),at pH 1.8 and 25 degrees C was 143 mg g(-1) for PGME2-deta (sample with the highest amino group concentration) while at 70 degrees C Q(max) reached the high value of 198 mg g(-1). Thermodynamic parameters revealed spontaneous and endothermic nature of Cr(VI) adsorption onto PGME-deta. (C) 2012 Elsevier B.V. All rights reserved.",
journal = "Journal of Hazardous Materials",
title = "Equilibrium and kinetics study on hexavalent chromium adsorption onto diethylene triamine grafted glycidyl methacrylate based copolymers",
volume = "209",
pages = "99-110",
doi = "10.1016/j.jhazmat.2011.12.079"
}

Maksin, D. D., Nastasović, A. B., Milutinović-Nikolić, A. D., Suručić, L. T., Sandić, Z., Hercigonja, R. V.,& Onjia, A. E.. (2012). Equilibrium and kinetics study on hexavalent chromium adsorption onto diethylene triamine grafted glycidyl methacrylate based copolymers. in Journal of Hazardous Materials, 209, 99-110.
https://doi.org/10.1016/j.jhazmat.2011.12.079

Maksin DD, Nastasović AB, Milutinović-Nikolić AD, Suručić LT, Sandić Z, Hercigonja RV, Onjia AE. Equilibrium and kinetics study on hexavalent chromium adsorption onto diethylene triamine grafted glycidyl methacrylate based copolymers. in Journal of Hazardous Materials. 2012;209:99-110.
doi:10.1016/j.jhazmat.2011.12.079 .

Maksin, Danijela D., Nastasović, Aleksandra B., Milutinović-Nikolić, Aleksandra D., Suručić, Ljiljana T., Sandić, Zvjezdana, Hercigonja, Radmila V., Onjia, Antonije E., "Equilibrium and kinetics study on hexavalent chromium adsorption onto diethylene triamine grafted glycidyl methacrylate based copolymers" in Journal of Hazardous Materials, 209 (2012):99-110,
https://doi.org/10.1016/j.jhazmat.2011.12.079 . .

TY  - CONF
AU  - Maksin, Danijela D.
AU  - Nastasović, Aleksandra B.
AU  - Hercigonja, Radmila V.
AU  - Rakić, Vesna M.
AU  - Onjia, Antonije E.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9336
AB  - Three nonporous methacrylate polymer samples were synthesized by suspension
polymerization, and subsequently investigated. The surface area and the surface
morphology of the spherical beads were examined by the BET method from the
low-temperature adsorption isotherms and by scanning electron microscopy
(SEM), respectively. Thermal behaviour of the two homopolymer samples,
poly(glycidyl methacrylate) (PGMA) and poly(ethylene glycol dimethacrylate)
(PEGDMA), and the copolymer sample poly(glycidyl methacrylate-co-ethylene
glycol dimethacrylate) (PGME) was investigated by thermogravimetric analysis
(TGA) and differential scanning calorimetry (DSC). All samples exhibit complex
thermal degradation behavior. The copolymer is intermediate in stability between
PGMA and PEGDMA.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry
T1  - Thermal behaviour of some nonporous methacrylate polymers
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9336
ER  - 

@conference{
author = "Maksin, Danijela D. and Nastasović, Aleksandra B. and Hercigonja, Radmila V. and Rakić, Vesna M. and Onjia, Antonije E.",
year = "2010",
abstract = "Three nonporous methacrylate polymer samples were synthesized by suspension
polymerization, and subsequently investigated. The surface area and the surface
morphology of the spherical beads were examined by the BET method from the
low-temperature adsorption isotherms and by scanning electron microscopy
(SEM), respectively. Thermal behaviour of the two homopolymer samples,
poly(glycidyl methacrylate) (PGMA) and poly(ethylene glycol dimethacrylate)
(PEGDMA), and the copolymer sample poly(glycidyl methacrylate-co-ethylene
glycol dimethacrylate) (PGME) was investigated by thermogravimetric analysis
(TGA) and differential scanning calorimetry (DSC). All samples exhibit complex
thermal degradation behavior. The copolymer is intermediate in stability between
PGMA and PEGDMA.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry",
title = "Thermal behaviour of some nonporous methacrylate polymers",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9336"
}

Maksin, D. D., Nastasović, A. B., Hercigonja, R. V., Rakić, V. M.,& Onjia, A. E.. (2010). Thermal behaviour of some nonporous methacrylate polymers. in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia..
https://hdl.handle.net/21.15107/rcub_vinar_9336

Maksin DD, Nastasović AB, Hercigonja RV, Rakić VM, Onjia AE. Thermal behaviour of some nonporous methacrylate polymers. in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry. 2010;.
https://hdl.handle.net/21.15107/rcub_vinar_9336 .

Maksin, Danijela D., Nastasović, Aleksandra B., Hercigonja, Radmila V., Rakić, Vesna M., Onjia, Antonije E., "Thermal behaviour of some nonporous methacrylate polymers" in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry (2010),
https://hdl.handle.net/21.15107/rcub_vinar_9336 .

TY  - CONF
AU  - Hercigonja, Radmila V.
AU  - Maksin, Danijela D.
AU  - Dondur, Vera
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9332
AB  - Aluminum ions were extracted from the framework of the faujasite type zeolite NaY
(Si/Al=2.4) by citric acid treatment. Dealuminated CoY and ZnY zeolites of high cobalt
and zinc content were prepared by replacing sodium ions with Co2+ and Zn2+ in
dealuminated Y zeolites, with increased framework Si/Al ratio. Chemical and XRD
analyses of zeolites were performed and the FTIR-ATR spectra were recorded. The
results of physicochemical analyses are discussed in terms of unit cell (u.c.) composition.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry
T1  - Introduction of transition metal cations (Co2+ and Zn2+) into dealuminated NaY zeolite obtained by citric acid treatment
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9332
ER  - 

@conference{
author = "Hercigonja, Radmila V. and Maksin, Danijela D. and Dondur, Vera",
year = "2010",
abstract = "Aluminum ions were extracted from the framework of the faujasite type zeolite NaY
(Si/Al=2.4) by citric acid treatment. Dealuminated CoY and ZnY zeolites of high cobalt
and zinc content were prepared by replacing sodium ions with Co2+ and Zn2+ in
dealuminated Y zeolites, with increased framework Si/Al ratio. Chemical and XRD
analyses of zeolites were performed and the FTIR-ATR spectra were recorded. The
results of physicochemical analyses are discussed in terms of unit cell (u.c.) composition.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry",
title = "Introduction of transition metal cations (Co2+ and Zn2+) into dealuminated NaY zeolite obtained by citric acid treatment",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9332"
}

Hercigonja, R. V., Maksin, D. D.,& Dondur, V.. (2010). Introduction of transition metal cations (Co2+ and Zn2+) into dealuminated NaY zeolite obtained by citric acid treatment. in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia..
https://hdl.handle.net/21.15107/rcub_vinar_9332

Hercigonja RV, Maksin DD, Dondur V. Introduction of transition metal cations (Co2+ and Zn2+) into dealuminated NaY zeolite obtained by citric acid treatment. in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry. 2010;.
https://hdl.handle.net/21.15107/rcub_vinar_9332 .

Hercigonja, Radmila V., Maksin, Danijela D., Dondur, Vera, "Introduction of transition metal cations (Co2+ and Zn2+) into dealuminated NaY zeolite obtained by citric acid treatment" in Physical chemistry 2010 : 10th international conference on fundamental and applied aspects of physical chemistry (2010),
https://hdl.handle.net/21.15107/rcub_vinar_9332 .

TY  - JOUR
AU  - Rakić, Vesna M.
AU  - Dondur, Vera
AU  - Hercigonja, Radmila V.
AU  - Andrić, Velibor
PY  - 2003
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6374
AB  - The active sites of hydrogen-exchanged Y zeolite (HY) and dealuminated (HDY) zeolites are investigated by TPD of carbon monoxide. Only the high temperature TPD spectra of CO (T(M)approximate to620-690degreesC) were observed, meaning that CO molecules interact with very strong acid sites. The amounts of CO bonded on these sites are small (less than 1 molecule per unit cell). The strong influence of dealumination on the coverage degree is found. The calculated values for kinetic parameters indicate chemisorption of CO in the investigated systems (E(des)approximate to240 kJ mol(-1), Aapproximate to10(11) s(-1)).
T2  - Journal of Thermal Analysis and Calorimetry
T1  - The investigation of strong active sites of dealuminated Y-type zeolite by TPD of carbon monoxide
VL  - 72
IS  - 3
SP  - 761
EP  - 767
DO  - 10.1023/A:1025049727731
ER  - 

@article{
author = "Rakić, Vesna M. and Dondur, Vera and Hercigonja, Radmila V. and Andrić, Velibor",
year = "2003",
abstract = "The active sites of hydrogen-exchanged Y zeolite (HY) and dealuminated (HDY) zeolites are investigated by TPD of carbon monoxide. Only the high temperature TPD spectra of CO (T(M)approximate to620-690degreesC) were observed, meaning that CO molecules interact with very strong acid sites. The amounts of CO bonded on these sites are small (less than 1 molecule per unit cell). The strong influence of dealumination on the coverage degree is found. The calculated values for kinetic parameters indicate chemisorption of CO in the investigated systems (E(des)approximate to240 kJ mol(-1), Aapproximate to10(11) s(-1)).",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "The investigation of strong active sites of dealuminated Y-type zeolite by TPD of carbon monoxide",
volume = "72",
number = "3",
pages = "761-767",
doi = "10.1023/A:1025049727731"
}

Rakić, V. M., Dondur, V., Hercigonja, R. V.,& Andrić, V.. (2003). The investigation of strong active sites of dealuminated Y-type zeolite by TPD of carbon monoxide. in Journal of Thermal Analysis and Calorimetry, 72(3), 761-767.
https://doi.org/10.1023/A:1025049727731

Rakić VM, Dondur V, Hercigonja RV, Andrić V. The investigation of strong active sites of dealuminated Y-type zeolite by TPD of carbon monoxide. in Journal of Thermal Analysis and Calorimetry. 2003;72(3):761-767.
doi:10.1023/A:1025049727731 .

Rakić, Vesna M., Dondur, Vera, Hercigonja, Radmila V., Andrić, Velibor, "The investigation of strong active sites of dealuminated Y-type zeolite by TPD of carbon monoxide" in Journal of Thermal Analysis and Calorimetry, 72, no. 3 (2003):761-767,
https://doi.org/10.1023/A:1025049727731 . .