Dohčević-Mitrović, Zorana

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Authority KeyName Variants
d21bdaa3-2f84-42f5-9c2b-70bbd19eef11
  • Dohčević-Mitrović, Zorana (10)
  • Dohčević-Mitrović, Zorana (3)
Projects

Author's Bibliography

Unvailing the spin–phonon coupling in nanocrystalline BiFeO3 by resonant two-phonon Raman active modes

Stojadinović, Bojan; Đokić, Dejan M.; Paunović, Novica; Živković, Ivica; Ćirić, Luka; Kusigerski, Vladan; Dohčević-Mitrović, Zorana

(2021)

TY  - JOUR
AU  - Stojadinović, Bojan
AU  - Đokić, Dejan M.
AU  - Paunović, Novica
AU  - Živković, Ivica
AU  - Ćirić, Luka
AU  - Kusigerski, Vladan
AU  - Dohčević-Mitrović, Zorana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9956
AB  - We report on temperature dependence of two-phonon Raman spectra in BiFeO3 nanocrystals, above and below the Néel temperature TN using a resonant laser excitation line (λ=532 nm). Two-phonon modes exhibited anomalous frequency hardening and deviation from the anharmonic decay below TN. Such behavior strongly supported the existence of spin-two-phonon interaction, because these modes are known to be very sensitive to the antiferromagnetic ordering. Within the mean-field theory for the nearest-neighbor interaction, the linear relationship between spin–spin correlation function and observed two-phonon frequency shift below TN was obtained. This approach enabled to quantify the spin–phonon interaction by spin–phonon coupling strength for both two-phonon modes and justified the application of mean-field approach. Magnetic measurements revealed the coexistence of antiferromagnetic and weak ferromagnetic phases below TN, which were found non competitive, additionally supporting the mean-field approach from which we deduced that the two-phonon modes in BiFeO3 are correlated with antiferromagnetic ordering below TN.
T2  - Materials Science and Engineering: B
T1  - Unvailing the spin–phonon coupling in nanocrystalline BiFeO3 by resonant two-phonon Raman active modes
VL  - 274
SP  - 115444
DO  - 10.1016/j.mseb.2021.115444
ER  - 
@article{
author = "Stojadinović, Bojan and Đokić, Dejan M. and Paunović, Novica and Živković, Ivica and Ćirić, Luka and Kusigerski, Vladan and Dohčević-Mitrović, Zorana",
year = "2021",
abstract = "We report on temperature dependence of two-phonon Raman spectra in BiFeO3 nanocrystals, above and below the Néel temperature TN using a resonant laser excitation line (λ=532 nm). Two-phonon modes exhibited anomalous frequency hardening and deviation from the anharmonic decay below TN. Such behavior strongly supported the existence of spin-two-phonon interaction, because these modes are known to be very sensitive to the antiferromagnetic ordering. Within the mean-field theory for the nearest-neighbor interaction, the linear relationship between spin–spin correlation function and observed two-phonon frequency shift below TN was obtained. This approach enabled to quantify the spin–phonon interaction by spin–phonon coupling strength for both two-phonon modes and justified the application of mean-field approach. Magnetic measurements revealed the coexistence of antiferromagnetic and weak ferromagnetic phases below TN, which were found non competitive, additionally supporting the mean-field approach from which we deduced that the two-phonon modes in BiFeO3 are correlated with antiferromagnetic ordering below TN.",
journal = "Materials Science and Engineering: B",
title = "Unvailing the spin–phonon coupling in nanocrystalline BiFeO3 by resonant two-phonon Raman active modes",
volume = "274",
pages = "115444",
doi = "10.1016/j.mseb.2021.115444"
}
Stojadinović, B., Đokić, D. M., Paunović, N., Živković, I., Ćirić, L., Kusigerski, V.,& Dohčević-Mitrović, Z.. (2021). Unvailing the spin–phonon coupling in nanocrystalline BiFeO3 by resonant two-phonon Raman active modes. in Materials Science and Engineering: B, 274, 115444.
https://doi.org/10.1016/j.mseb.2021.115444
Stojadinović B, Đokić DM, Paunović N, Živković I, Ćirić L, Kusigerski V, Dohčević-Mitrović Z. Unvailing the spin–phonon coupling in nanocrystalline BiFeO3 by resonant two-phonon Raman active modes. in Materials Science and Engineering: B. 2021;274:115444.
doi:10.1016/j.mseb.2021.115444 .
Stojadinović, Bojan, Đokić, Dejan M., Paunović, Novica, Živković, Ivica, Ćirić, Luka, Kusigerski, Vladan, Dohčević-Mitrović, Zorana, "Unvailing the spin–phonon coupling in nanocrystalline BiFeO3 by resonant two-phonon Raman active modes" in Materials Science and Engineering: B, 274 (2021):115444,
https://doi.org/10.1016/j.mseb.2021.115444 . .

Influence of Mg doping on structural, optical and photocatalytic performances of ceria nanopowders

Matović, Branko; Luković, Jelena M.; Stojadinović, Bojan; Askrabic, Sonja; Zarubica, Aleksandra R.; Babić, Biljana M.; Dohčević-Mitrović, Zorana

(2017)

TY  - JOUR
AU  - Matović, Branko
AU  - Luković, Jelena M.
AU  - Stojadinović, Bojan
AU  - Askrabic, Sonja
AU  - Zarubica, Aleksandra R.
AU  - Babić, Biljana M.
AU  - Dohčević-Mitrović, Zorana 
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1905
AB  - Nanosized Mg-doped ceria powders were obtained by self-propagating room temperature reaction without using surfactants or templates. X-ray diffraction analysis and field emission scanning microscopy results showed that the doped samples are solid solutions with fluorite-type structure and spherical morphology. Raman spectra revealed an increase in the amount of oxygen vacancies with the increase of Mg concentration. This increasing results in a narrowing of the bandgap of CeO2. The photocatalytic performances of the Mg-doped ceria solid solutions were evaluated by decomposing an organic dye, crystal violet under UV irradiation. The Mg-doped ceria solid solutions exhibit significantly better photocatalytic activity than the pure CeO2 and commercial TiO2. The higher first rate constant of the Mg-doped samples demonstrated that they are much more efficient than TiO2 and CeO2 under UV light. Mg2+ dopant ions and oxygen vacancies play a significant role in the enhancement of photocatalytic performances of the Mg-doped ceria.
T2  - Processing and Application of Ceramics
T1  - Influence of Mg doping on structural, optical and photocatalytic performances of ceria nanopowders
VL  - 11
IS  - 4
SP  - 304
EP  - 310
DO  - 10.2298/PAC1704304M
ER  - 
@article{
author = "Matović, Branko and Luković, Jelena M. and Stojadinović, Bojan and Askrabic, Sonja and Zarubica, Aleksandra R. and Babić, Biljana M. and Dohčević-Mitrović, Zorana ",
year = "2017",
abstract = "Nanosized Mg-doped ceria powders were obtained by self-propagating room temperature reaction without using surfactants or templates. X-ray diffraction analysis and field emission scanning microscopy results showed that the doped samples are solid solutions with fluorite-type structure and spherical morphology. Raman spectra revealed an increase in the amount of oxygen vacancies with the increase of Mg concentration. This increasing results in a narrowing of the bandgap of CeO2. The photocatalytic performances of the Mg-doped ceria solid solutions were evaluated by decomposing an organic dye, crystal violet under UV irradiation. The Mg-doped ceria solid solutions exhibit significantly better photocatalytic activity than the pure CeO2 and commercial TiO2. The higher first rate constant of the Mg-doped samples demonstrated that they are much more efficient than TiO2 and CeO2 under UV light. Mg2+ dopant ions and oxygen vacancies play a significant role in the enhancement of photocatalytic performances of the Mg-doped ceria.",
journal = "Processing and Application of Ceramics",
title = "Influence of Mg doping on structural, optical and photocatalytic performances of ceria nanopowders",
volume = "11",
number = "4",
pages = "304-310",
doi = "10.2298/PAC1704304M"
}
Matović, B., Luković, J. M., Stojadinović, B., Askrabic, S., Zarubica, A. R., Babić, B. M.,& Dohčević-Mitrović, Z.. (2017). Influence of Mg doping on structural, optical and photocatalytic performances of ceria nanopowders. in Processing and Application of Ceramics, 11(4), 304-310.
https://doi.org/10.2298/PAC1704304M
Matović B, Luković JM, Stojadinović B, Askrabic S, Zarubica AR, Babić BM, Dohčević-Mitrović Z. Influence of Mg doping on structural, optical and photocatalytic performances of ceria nanopowders. in Processing and Application of Ceramics. 2017;11(4):304-310.
doi:10.2298/PAC1704304M .
Matović, Branko, Luković, Jelena M., Stojadinović, Bojan, Askrabic, Sonja, Zarubica, Aleksandra R., Babić, Biljana M., Dohčević-Mitrović, Zorana , "Influence of Mg doping on structural, optical and photocatalytic performances of ceria nanopowders" in Processing and Application of Ceramics, 11, no. 4 (2017):304-310,
https://doi.org/10.2298/PAC1704304M . .
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2
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Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition

Stojadinović, Bojan; Dohčević-Mitrović, Zorana ; Stepanenko, Dimitrije; Rosić, Milena; Petronijević, Ivan M.; Tasić, Nikola B.; Ilic, Nikola; Matović, Branko; Stojanovic, Biljana

(2017)

TY  - JOUR
AU  - Stojadinović, Bojan
AU  - Dohčević-Mitrović, Zorana 
AU  - Stepanenko, Dimitrije
AU  - Rosić, Milena
AU  - Petronijević, Ivan M.
AU  - Tasić, Nikola B.
AU  - Ilic, Nikola
AU  - Matović, Branko
AU  - Stojanovic, Biljana
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1804
AB  - We have studied Ho-doped BiFeO3 nanopowders (Bi1-xHoxFeO3, x = 0-0.15), prepared via sol-gel method, in order to analyse the effect of substitution-driven structural transition on dielectric and ferroelectric properties of bismuth ferrite. X-ray diffraction and Raman study demonstrated that an increased Ho concentration (x GT = 0.1) has induced gradual phase transition from rhombohedral to orthorhombic phase. The frequency dependent permittivity of Bi1-xHoxFeO3 nanopowders was analysed within a model which incorporates Debye-like dielectric response and dc and ac conductivity contributions based on universal dielectric response. It was shown that influence of leakage current and grain boundary/interface effects on dielectric and ferroelectric properties was substantially reduced in biphasic Bi1-xHoxFeO3 (x GT 0.1) samples. The electrical performance of Bi0.85Ho0.15FeO3 sample, for which orthorhombic phase prevailed, was significantly improved and Bi0.85Ho0.15FeO3 has sustained strong applied electric fields (up to 100 kV/cm) without breakdown. Under strong external fields, the polarization exhibited strong frequency dependence. The low-frequency remnant polarization and coercive field of Bi0.85Ho0.15FeO3 were significantly enhanced. It was proposed that defect dipolar polarization substantially contributed to the intrinsic polarization of Bi0.85Ho0.15FeO3 under strong electric fields at low frequencies.
T2  - Ceramics International
T1  - Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition
VL  - 43
IS  - 18
SP  - 16531
EP  - 16538
DO  - 10.1016/j.ceramint.2017.09.038
ER  - 
@article{
author = "Stojadinović, Bojan and Dohčević-Mitrović, Zorana  and Stepanenko, Dimitrije and Rosić, Milena and Petronijević, Ivan M. and Tasić, Nikola B. and Ilic, Nikola and Matović, Branko and Stojanovic, Biljana",
year = "2017",
abstract = "We have studied Ho-doped BiFeO3 nanopowders (Bi1-xHoxFeO3, x = 0-0.15), prepared via sol-gel method, in order to analyse the effect of substitution-driven structural transition on dielectric and ferroelectric properties of bismuth ferrite. X-ray diffraction and Raman study demonstrated that an increased Ho concentration (x GT = 0.1) has induced gradual phase transition from rhombohedral to orthorhombic phase. The frequency dependent permittivity of Bi1-xHoxFeO3 nanopowders was analysed within a model which incorporates Debye-like dielectric response and dc and ac conductivity contributions based on universal dielectric response. It was shown that influence of leakage current and grain boundary/interface effects on dielectric and ferroelectric properties was substantially reduced in biphasic Bi1-xHoxFeO3 (x GT 0.1) samples. The electrical performance of Bi0.85Ho0.15FeO3 sample, for which orthorhombic phase prevailed, was significantly improved and Bi0.85Ho0.15FeO3 has sustained strong applied electric fields (up to 100 kV/cm) without breakdown. Under strong external fields, the polarization exhibited strong frequency dependence. The low-frequency remnant polarization and coercive field of Bi0.85Ho0.15FeO3 were significantly enhanced. It was proposed that defect dipolar polarization substantially contributed to the intrinsic polarization of Bi0.85Ho0.15FeO3 under strong electric fields at low frequencies.",
journal = "Ceramics International",
title = "Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition",
volume = "43",
number = "18",
pages = "16531-16538",
doi = "10.1016/j.ceramint.2017.09.038"
}
Stojadinović, B., Dohčević-Mitrović, Z., Stepanenko, D., Rosić, M., Petronijević, I. M., Tasić, N. B., Ilic, N., Matović, B.,& Stojanovic, B.. (2017). Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition. in Ceramics International, 43(18), 16531-16538.
https://doi.org/10.1016/j.ceramint.2017.09.038
Stojadinović B, Dohčević-Mitrović Z, Stepanenko D, Rosić M, Petronijević IM, Tasić NB, Ilic N, Matović B, Stojanovic B. Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition. in Ceramics International. 2017;43(18):16531-16538.
doi:10.1016/j.ceramint.2017.09.038 .
Stojadinović, Bojan, Dohčević-Mitrović, Zorana , Stepanenko, Dimitrije, Rosić, Milena, Petronijević, Ivan M., Tasić, Nikola B., Ilic, Nikola, Matović, Branko, Stojanovic, Biljana, "Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition" in Ceramics International, 43, no. 18 (2017):16531-16538,
https://doi.org/10.1016/j.ceramint.2017.09.038 . .
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Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure

Čebela, Maria; Janković, Bojan Ž.; Hercigonja, Radmila V.; Lukić, Miodrag J.; Dohčević-Mitrović, Zorana ; Milivojević, Dušan; Matović, Branko

(2016)

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 . .
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10
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WO3/TiO2 composite coatings: Structural, optical and photocatalytic properties

Dohčević-Mitrović, Zorana ; Stojadinovic, Stevan; Lozzi, Luca; Askrabic, Sonja; Rosić, Milena; Tomic, Natasa; Paunović, Novica M.; Lazovic, Sasa; Nikolić, Marko G.; Santucci, Sandro

(2016)

TY  - JOUR
AU  - Dohčević-Mitrović, Zorana 
AU  - Stojadinovic, Stevan
AU  - Lozzi, Luca
AU  - Askrabic, Sonja
AU  - Rosić, Milena
AU  - Tomic, Natasa
AU  - Paunović, Novica M.
AU  - Lazovic, Sasa
AU  - Nikolić, Marko G.
AU  - Santucci, Sandro
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1234
AB  - WO3/TiO2 and TiO2 coatings were prepared on titania substrates using facile and cost-effective plasma electrolytic oxidation process. The coatings were characterized by X-ray diffraction, scanning electron microscopy, Raman, UV vis diffuse reflectance spectroscopy, and X-ray photoelectron spectroscopy. With increasing duration of PEO process, the monoclinic WO3 phase became dominant and new monoclinic WO2.95 phase appeared. The optical absorption edge in the WO3/TiO2 samples, enriched with WO3/WO2.96 phase, was shifted to the visible region. The photocatalytic efficiency of WO3/TiO2 and pure TiO2 samples was evaluated by performing the photodegradation experiments in an aqueous solution of Rhodamine 6G and Mordant Blue 9 under the visible and UV light. The WO3/TiO2 catalysts are much more efficient than pure TiO2 under visible light and slightly better under UV light. The improvement of photocatalytic activity in the visible region is attributed to better light absorption, higher adsorption affinity and increased charge separation efficiency. (C) 2016 Elsevier Ltd. All rights reserved.
T2  - Materials Research Bulletin
T1  - WO3/TiO2 composite coatings: Structural, optical and photocatalytic properties
VL  - 83
SP  - 217
EP  - 224
DO  - 10.1016/j.materresbull.2016.06.011
ER  - 
@article{
author = "Dohčević-Mitrović, Zorana  and Stojadinovic, Stevan and Lozzi, Luca and Askrabic, Sonja and Rosić, Milena and Tomic, Natasa and Paunović, Novica M. and Lazovic, Sasa and Nikolić, Marko G. and Santucci, Sandro",
year = "2016",
abstract = "WO3/TiO2 and TiO2 coatings were prepared on titania substrates using facile and cost-effective plasma electrolytic oxidation process. The coatings were characterized by X-ray diffraction, scanning electron microscopy, Raman, UV vis diffuse reflectance spectroscopy, and X-ray photoelectron spectroscopy. With increasing duration of PEO process, the monoclinic WO3 phase became dominant and new monoclinic WO2.95 phase appeared. The optical absorption edge in the WO3/TiO2 samples, enriched with WO3/WO2.96 phase, was shifted to the visible region. The photocatalytic efficiency of WO3/TiO2 and pure TiO2 samples was evaluated by performing the photodegradation experiments in an aqueous solution of Rhodamine 6G and Mordant Blue 9 under the visible and UV light. The WO3/TiO2 catalysts are much more efficient than pure TiO2 under visible light and slightly better under UV light. The improvement of photocatalytic activity in the visible region is attributed to better light absorption, higher adsorption affinity and increased charge separation efficiency. (C) 2016 Elsevier Ltd. All rights reserved.",
journal = "Materials Research Bulletin",
title = "WO3/TiO2 composite coatings: Structural, optical and photocatalytic properties",
volume = "83",
pages = "217-224",
doi = "10.1016/j.materresbull.2016.06.011"
}
Dohčević-Mitrović, Z., Stojadinovic, S., Lozzi, L., Askrabic, S., Rosić, M., Tomic, N., Paunović, N. M., Lazovic, S., Nikolić, M. G.,& Santucci, S.. (2016). WO3/TiO2 composite coatings: Structural, optical and photocatalytic properties. in Materials Research Bulletin, 83, 217-224.
https://doi.org/10.1016/j.materresbull.2016.06.011
Dohčević-Mitrović Z, Stojadinovic S, Lozzi L, Askrabic S, Rosić M, Tomic N, Paunović NM, Lazovic S, Nikolić MG, Santucci S. WO3/TiO2 composite coatings: Structural, optical and photocatalytic properties. in Materials Research Bulletin. 2016;83:217-224.
doi:10.1016/j.materresbull.2016.06.011 .
Dohčević-Mitrović, Zorana , Stojadinovic, Stevan, Lozzi, Luca, Askrabic, Sonja, Rosić, Milena, Tomic, Natasa, Paunović, Novica M., Lazovic, Sasa, Nikolić, Marko G., Santucci, Sandro, "WO3/TiO2 composite coatings: Structural, optical and photocatalytic properties" in Materials Research Bulletin, 83 (2016):217-224,
https://doi.org/10.1016/j.materresbull.2016.06.011 . .
1
45
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44

Theoretical and experimental study of octahedral tilting of Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) nanometric powders

Rosić, Milena; Zagorac, Dejan; Milivojević, Dušan; Paunović, Novica M.; Zagorac, Jelena B.; Dohčević-Mitrović, Zorana; Matović, Branko

(Elsevier, 2016)

TY  - JOUR
AU  - Rosić, Milena
AU  - Zagorac, Dejan
AU  - Milivojević, Dušan
AU  - Paunović, Novica M.
AU  - Zagorac, Jelena B.
AU  - Dohčević-Mitrović, Zorana
AU  - Matović, Branko
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1077
AB  - In order to estimate theoretical stability of the perovskite structure for synthesized Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) nanopowders, the Goldschmidt tolerance factor G(t) and global instability index GII were calculated. Furthermore, we have performed structure prediction of Ca1-xGdxMnO3 perovskites and found several possible perovskite-related phases. The influence of gadolinium amount on MneO bond angles and distances, tilting of MnO6 octahedra around all three axes and deformation due to the presence of the Jahn-Teller distortion around Mn3+ cation, as well as the influence of the amount of Mn3+ cation on Ca1-xGdxMnO3 compound, was examined. Ion Mn valence states were determined by bond valence calculations (BVC). Infrared active phonon modes in Ca1-xGdxMnO3 were studied by infrared reflection spectroscopy and magnetic properties were studied by using EPR (electron paramagnetic resonance) measurements. (C) 2016 Elsevier B.V. All rights reserved.
PB  - Elsevier
T2  - Journal of Alloys and Compounds
T1  - Theoretical and experimental study of octahedral tilting of Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) nanometric powders
VL  - 678
SP  - 219
EP  - 227
DO  - 10.1016/j.jallcom.2016.03.173
ER  - 
@article{
author = "Rosić, Milena and Zagorac, Dejan and Milivojević, Dušan and Paunović, Novica M. and Zagorac, Jelena B. and Dohčević-Mitrović, Zorana and Matović, Branko",
year = "2016",
abstract = "In order to estimate theoretical stability of the perovskite structure for synthesized Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) nanopowders, the Goldschmidt tolerance factor G(t) and global instability index GII were calculated. Furthermore, we have performed structure prediction of Ca1-xGdxMnO3 perovskites and found several possible perovskite-related phases. The influence of gadolinium amount on MneO bond angles and distances, tilting of MnO6 octahedra around all three axes and deformation due to the presence of the Jahn-Teller distortion around Mn3+ cation, as well as the influence of the amount of Mn3+ cation on Ca1-xGdxMnO3 compound, was examined. Ion Mn valence states were determined by bond valence calculations (BVC). Infrared active phonon modes in Ca1-xGdxMnO3 were studied by infrared reflection spectroscopy and magnetic properties were studied by using EPR (electron paramagnetic resonance) measurements. (C) 2016 Elsevier B.V. All rights reserved.",
publisher = "Elsevier",
journal = "Journal of Alloys and Compounds",
title = "Theoretical and experimental study of octahedral tilting of Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) nanometric powders",
volume = "678",
pages = "219-227",
doi = "10.1016/j.jallcom.2016.03.173"
}
Rosić, M., Zagorac, D., Milivojević, D., Paunović, N. M., Zagorac, J. B., Dohčević-Mitrović, Z.,& Matović, B.. (2016). Theoretical and experimental study of octahedral tilting of Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) nanometric powders. in Journal of Alloys and Compounds
Elsevier., 678, 219-227.
https://doi.org/10.1016/j.jallcom.2016.03.173
Rosić M, Zagorac D, Milivojević D, Paunović NM, Zagorac JB, Dohčević-Mitrović Z, Matović B. Theoretical and experimental study of octahedral tilting of Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) nanometric powders. in Journal of Alloys and Compounds. 2016;678:219-227.
doi:10.1016/j.jallcom.2016.03.173 .
Rosić, Milena, Zagorac, Dejan, Milivojević, Dušan, Paunović, Novica M., Zagorac, Jelena B., Dohčević-Mitrović, Zorana, Matović, Branko, "Theoretical and experimental study of octahedral tilting of Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) nanometric powders" in Journal of Alloys and Compounds, 678 (2016):219-227,
https://doi.org/10.1016/j.jallcom.2016.03.173 . .
5
5
5

Nanocrystalline CeO2-delta as Effective Adsorbent of Azo Dyes

Tomic, Natasa M.; Dohčević-Mitrović, Zorana; Paunović, Novica M.; Mijin, Dušan Ž.; Radić, Nenad D.; Grbic, Bosko V.; Askrabic, Sonja M.; Babić, Biljana M.; Bajuk-Bogdanović, Danica V.

(2014)

TY  - JOUR
AU  - Tomic, Natasa M.
AU  - Dohčević-Mitrović, Zorana
AU  - Paunović, Novica M.
AU  - Mijin, Dušan Ž.
AU  - Radić, Nenad D.
AU  - Grbic, Bosko V.
AU  - Askrabic, Sonja M.
AU  - Babić, Biljana M.
AU  - Bajuk-Bogdanović, Danica V.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9685
AB  - Ultrafine CeO2-delta nanopowder, prepared by a simple and cost-effective self-propagating room temperature synthesis method (SPRT), showed high adsorption capability for removal of different azo dyes. Batch type of adsorption experiments with fixed initial pH value were conducted for the removal of Reactive Orange 16 (RO16), Methyl Orange (MO), and Mordant Blue 9 (MB9). The equilibrium adsorption data were evaluated using Freundlich and Langmuir isotherm models. The Langmuir model slightly better describes isotherm data for RO16 and MO, whereas the Freundlich model was found to best fit the isotherm data for MB9 over the whole concentration range. The maximum adsorption capacities, determined from isotherm data for MO, MB9, and RO16 were 113, 101, and 91 mg g(1) respectively. The adsorption process follows the pseudo-second-order kinetic model indicating the coexistence of chemisorption and physisorption. The mechanism of azo dye adsorption is also discussed.
T2  - Langmuir
T1  - Nanocrystalline CeO2-delta as Effective Adsorbent of Azo Dyes
VL  - 30
IS  - 39
SP  - 11582
EP  - 11590
DO  - 10.1021/la502969w
ER  - 
@article{
author = "Tomic, Natasa M. and Dohčević-Mitrović, Zorana and Paunović, Novica M. and Mijin, Dušan Ž. and Radić, Nenad D. and Grbic, Bosko V. and Askrabic, Sonja M. and Babić, Biljana M. and Bajuk-Bogdanović, Danica V.",
year = "2014",
abstract = "Ultrafine CeO2-delta nanopowder, prepared by a simple and cost-effective self-propagating room temperature synthesis method (SPRT), showed high adsorption capability for removal of different azo dyes. Batch type of adsorption experiments with fixed initial pH value were conducted for the removal of Reactive Orange 16 (RO16), Methyl Orange (MO), and Mordant Blue 9 (MB9). The equilibrium adsorption data were evaluated using Freundlich and Langmuir isotherm models. The Langmuir model slightly better describes isotherm data for RO16 and MO, whereas the Freundlich model was found to best fit the isotherm data for MB9 over the whole concentration range. The maximum adsorption capacities, determined from isotherm data for MO, MB9, and RO16 were 113, 101, and 91 mg g(1) respectively. The adsorption process follows the pseudo-second-order kinetic model indicating the coexistence of chemisorption and physisorption. The mechanism of azo dye adsorption is also discussed.",
journal = "Langmuir",
title = "Nanocrystalline CeO2-delta as Effective Adsorbent of Azo Dyes",
volume = "30",
number = "39",
pages = "11582-11590",
doi = "10.1021/la502969w"
}
Tomic, N. M., Dohčević-Mitrović, Z., Paunović, N. M., Mijin, D. Ž., Radić, N. D., Grbic, B. V., Askrabic, S. M., Babić, B. M.,& Bajuk-Bogdanović, D. V.. (2014). Nanocrystalline CeO2-delta as Effective Adsorbent of Azo Dyes. in Langmuir, 30(39), 11582-11590.
https://doi.org/10.1021/la502969w
Tomic NM, Dohčević-Mitrović Z, Paunović NM, Mijin DŽ, Radić ND, Grbic BV, Askrabic SM, Babić BM, Bajuk-Bogdanović DV. Nanocrystalline CeO2-delta as Effective Adsorbent of Azo Dyes. in Langmuir. 2014;30(39):11582-11590.
doi:10.1021/la502969w .
Tomic, Natasa M., Dohčević-Mitrović, Zorana, Paunović, Novica M., Mijin, Dušan Ž., Radić, Nenad D., Grbic, Bosko V., Askrabic, Sonja M., Babić, Biljana M., Bajuk-Bogdanović, Danica V., "Nanocrystalline CeO2-delta as Effective Adsorbent of Azo Dyes" in Langmuir, 30, no. 39 (2014):11582-11590,
https://doi.org/10.1021/la502969w . .
37
37
37

Investigation of surface defect states in CeO2-y nanocrystals by Scanning-tunneling microscopy/spectroscopy and ellipsometry

Radović, Marko B.; Stojadinović, Bojan; Tomić, Nataša; Golubović, Aleksandar V.; Matović, Branko; Veljkovic, Ivana; Dohčević-Mitrović, Zorana

(2014)

TY  - JOUR
AU  - Radović, Marko B.
AU  - Stojadinović, Bojan
AU  - Tomić, Nataša
AU  - Golubović, Aleksandar V.
AU  - Matović, Branko
AU  - Veljkovic, Ivana
AU  - Dohčević-Mitrović, Zorana 
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/308
AB  - Synthesis process strongly influences the nanocrystalline CeO2-y defective structure. The presence of surface defects, in the form of oxygen vacancies in different charge states (F centers), can change the electronic properties of ceria nanocrystals. Nanocrystalline CeO2-y samples were synthesized using three different methods (precipitation, self-propagating room temperature, and hydrothermal synthesis). Raman spectroscopy was used to identify the presence of oxygen vacancies which presumably were formed at the nanoparticle surface. The defect concentration depended on the crystallite size of differently prepared CeO2-y samples. Scanning tunneling microscopy/spectroscopy and ellipsometry were employed to investigate the electronic band structure of defective CeO2-y nanocrystals. Scanning tunneling spectroscopy measurements demonstrated that inside the band gap of CeO2-y nanocrystals, besides the filled 4 f states, appeared additional states which were related to occupied and empty F center defect states. From the ellipsometric measurements, using the critical points model, the energy positions of different F centers states and the values of the reduced band gap energies were determined. The analysis of obtained data pointed out that depending on the synthesis method, different types of F centers (F+ and F-0) can be formed in the CeO2-y nanocrystals. The formation of different F center defect states inside the ceria gap have a strong impact on the electrical, optical, and magnetic properties of ceria nanocrystals. (C) 2014 AIP Publishing LLC.
T2  - Journal of Applied Physics
T1  - Investigation of surface defect states in CeO2-y nanocrystals by Scanning-tunneling microscopy/spectroscopy and ellipsometry
VL  - 116
IS  - 23
DO  - 10.1063/1.4904516
ER  - 
@article{
author = "Radović, Marko B. and Stojadinović, Bojan and Tomić, Nataša and Golubović, Aleksandar V. and Matović, Branko and Veljkovic, Ivana and Dohčević-Mitrović, Zorana ",
year = "2014",
abstract = "Synthesis process strongly influences the nanocrystalline CeO2-y defective structure. The presence of surface defects, in the form of oxygen vacancies in different charge states (F centers), can change the electronic properties of ceria nanocrystals. Nanocrystalline CeO2-y samples were synthesized using three different methods (precipitation, self-propagating room temperature, and hydrothermal synthesis). Raman spectroscopy was used to identify the presence of oxygen vacancies which presumably were formed at the nanoparticle surface. The defect concentration depended on the crystallite size of differently prepared CeO2-y samples. Scanning tunneling microscopy/spectroscopy and ellipsometry were employed to investigate the electronic band structure of defective CeO2-y nanocrystals. Scanning tunneling spectroscopy measurements demonstrated that inside the band gap of CeO2-y nanocrystals, besides the filled 4 f states, appeared additional states which were related to occupied and empty F center defect states. From the ellipsometric measurements, using the critical points model, the energy positions of different F centers states and the values of the reduced band gap energies were determined. The analysis of obtained data pointed out that depending on the synthesis method, different types of F centers (F+ and F-0) can be formed in the CeO2-y nanocrystals. The formation of different F center defect states inside the ceria gap have a strong impact on the electrical, optical, and magnetic properties of ceria nanocrystals. (C) 2014 AIP Publishing LLC.",
journal = "Journal of Applied Physics",
title = "Investigation of surface defect states in CeO2-y nanocrystals by Scanning-tunneling microscopy/spectroscopy and ellipsometry",
volume = "116",
number = "23",
doi = "10.1063/1.4904516"
}
Radović, M. B., Stojadinović, B., Tomić, N., Golubović, A. V., Matović, B., Veljkovic, I.,& Dohčević-Mitrović, Z.. (2014). Investigation of surface defect states in CeO2-y nanocrystals by Scanning-tunneling microscopy/spectroscopy and ellipsometry. in Journal of Applied Physics, 116(23).
https://doi.org/10.1063/1.4904516
Radović MB, Stojadinović B, Tomić N, Golubović AV, Matović B, Veljkovic I, Dohčević-Mitrović Z. Investigation of surface defect states in CeO2-y nanocrystals by Scanning-tunneling microscopy/spectroscopy and ellipsometry. in Journal of Applied Physics. 2014;116(23).
doi:10.1063/1.4904516 .
Radović, Marko B., Stojadinović, Bojan, Tomić, Nataša, Golubović, Aleksandar V., Matović, Branko, Veljkovic, Ivana, Dohčević-Mitrović, Zorana , "Investigation of surface defect states in CeO2-y nanocrystals by Scanning-tunneling microscopy/spectroscopy and ellipsometry" in Journal of Applied Physics, 116, no. 23 (2014),
https://doi.org/10.1063/1.4904516 . .
8
7
8

TiO2/WO3 photocatalytic composite coatings prepared by spray pyrolysis

Grbic, Bosko; Radić, Nenad; Stojadinovic, Stevan; Vasilic, Rastko; Dohčević-Mitrović, Zorana ; Šaponjić, Zoran; Stefanov, Plamen

(2014)

TY  - JOUR
AU  - Grbic, Bosko
AU  - Radić, Nenad
AU  - Stojadinovic, Stevan
AU  - Vasilic, Rastko
AU  - Dohčević-Mitrović, Zorana 
AU  - Šaponjić, Zoran
AU  - Stefanov, Plamen
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/315
AB  - TiO2/WO3 composites supported on a stainless steel foil were prepared by the spray pyrolysis technique. Content of WO3 was gradually increased from 1 wt% to 100 wt.%, while the coating thickness was limited to about 1 pm. The coatings were characterized by X-ray diffraction, scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy. The photocatalytic activity of obtained coatings was investigated by degradation of methyl orange, used as model pollutant. The results show that with increasing WO3 content up to 10 wt.% photoactivity increases as result of better charge separation that could effectively prevent the recombination of photogenerated electrons and holes. Further increase of WO3 content led to decrease of photoactivity. (C) 2014 Elsevier B.V. All rights reserved.
T2  - Surface and Coatings Technology
T1  - TiO2/WO3 photocatalytic composite coatings prepared by spray pyrolysis
VL  - 258
SP  - 763
EP  - 771
DO  - 10.1016/j.surfcoat.2014.07.082
ER  - 
@article{
author = "Grbic, Bosko and Radić, Nenad and Stojadinovic, Stevan and Vasilic, Rastko and Dohčević-Mitrović, Zorana  and Šaponjić, Zoran and Stefanov, Plamen",
year = "2014",
abstract = "TiO2/WO3 composites supported on a stainless steel foil were prepared by the spray pyrolysis technique. Content of WO3 was gradually increased from 1 wt% to 100 wt.%, while the coating thickness was limited to about 1 pm. The coatings were characterized by X-ray diffraction, scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy. The photocatalytic activity of obtained coatings was investigated by degradation of methyl orange, used as model pollutant. The results show that with increasing WO3 content up to 10 wt.% photoactivity increases as result of better charge separation that could effectively prevent the recombination of photogenerated electrons and holes. Further increase of WO3 content led to decrease of photoactivity. (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Surface and Coatings Technology",
title = "TiO2/WO3 photocatalytic composite coatings prepared by spray pyrolysis",
volume = "258",
pages = "763-771",
doi = "10.1016/j.surfcoat.2014.07.082"
}
Grbic, B., Radić, N., Stojadinovic, S., Vasilic, R., Dohčević-Mitrović, Z., Šaponjić, Z.,& Stefanov, P.. (2014). TiO2/WO3 photocatalytic composite coatings prepared by spray pyrolysis. in Surface and Coatings Technology, 258, 763-771.
https://doi.org/10.1016/j.surfcoat.2014.07.082
Grbic B, Radić N, Stojadinovic S, Vasilic R, Dohčević-Mitrović Z, Šaponjić Z, Stefanov P. TiO2/WO3 photocatalytic composite coatings prepared by spray pyrolysis. in Surface and Coatings Technology. 2014;258:763-771.
doi:10.1016/j.surfcoat.2014.07.082 .
Grbic, Bosko, Radić, Nenad, Stojadinovic, Stevan, Vasilic, Rastko, Dohčević-Mitrović, Zorana , Šaponjić, Zoran, Stefanov, Plamen, "TiO2/WO3 photocatalytic composite coatings prepared by spray pyrolysis" in Surface and Coatings Technology, 258 (2014):763-771,
https://doi.org/10.1016/j.surfcoat.2014.07.082 . .
32
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33

Synthesis, calcination and characterization of Nanosized ceria powders by self-propagating room temperature method

Matović, Branko; Dukić, Jelena; Babić, Biljana M.; Bučevac, Dušan; Dohčević-Mitrović, Zorana ; Radović, Marko B.; Bošković, Snežana B.

(2013)

TY  - JOUR
AU  - Matović, Branko
AU  - Dukić, Jelena
AU  - Babić, Biljana M.
AU  - Bučevac, Dušan
AU  - Dohčević-Mitrović, Zorana 
AU  - Radović, Marko B.
AU  - Bošković, Snežana B.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5497
AB  - Nanometric ceria powders with fluorite-type structure were obtained by applying self-propagating room temperature method. The obtained powders were subsequently thermally treated (calcined) at different temperatures for different times. Powder properties such as specific surface area, crystallite size, particle size and lattice parameter have been studied. Roentgen diffraction analysis (XRD), BET and Raman scattering measurements were used to characterize the as-obtained (uncalcined) powder as well as powders calcined at different temperatures. It was found that the average diameter of the as-obtained crystallites is in the range of 3-5 nm whereas the specific surface area is about 70 m(2)/g. The subsequent, 15 min long, calcination of as-obtained powder at different temperatures gradually increased crystallite size up to similar to 60 nm and reduced specific surface down to 6 m(2)/g. Raman spectra of synthesized CeO2-y depicts a strong red shift of active triply degenerate F-2 (g) mode as well as additional peak at 600 cm(-1). The frequency of F-2 g mode increased while its line width decreased with an increase in calcination temperature. Such a behavior is considered to be the result of particle size increase and agglomeration during the calcination. After the heat treatment at 800 degrees C crystallite size reached value larger than 50 nm. Second order Raman mode, which originates from intrinsic oxygen vacancies, disappeared after calcination. (c) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Synthesis, calcination and characterization of Nanosized ceria powders by self-propagating room temperature method
VL  - 39
IS  - 5
SP  - 5007
EP  - 5012
DO  - 10.1016/j.ceramint.2012.11.098
ER  - 
@article{
author = "Matović, Branko and Dukić, Jelena and Babić, Biljana M. and Bučevac, Dušan and Dohčević-Mitrović, Zorana  and Radović, Marko B. and Bošković, Snežana B.",
year = "2013",
abstract = "Nanometric ceria powders with fluorite-type structure were obtained by applying self-propagating room temperature method. The obtained powders were subsequently thermally treated (calcined) at different temperatures for different times. Powder properties such as specific surface area, crystallite size, particle size and lattice parameter have been studied. Roentgen diffraction analysis (XRD), BET and Raman scattering measurements were used to characterize the as-obtained (uncalcined) powder as well as powders calcined at different temperatures. It was found that the average diameter of the as-obtained crystallites is in the range of 3-5 nm whereas the specific surface area is about 70 m(2)/g. The subsequent, 15 min long, calcination of as-obtained powder at different temperatures gradually increased crystallite size up to similar to 60 nm and reduced specific surface down to 6 m(2)/g. Raman spectra of synthesized CeO2-y depicts a strong red shift of active triply degenerate F-2 (g) mode as well as additional peak at 600 cm(-1). The frequency of F-2 g mode increased while its line width decreased with an increase in calcination temperature. Such a behavior is considered to be the result of particle size increase and agglomeration during the calcination. After the heat treatment at 800 degrees C crystallite size reached value larger than 50 nm. Second order Raman mode, which originates from intrinsic oxygen vacancies, disappeared after calcination. (c) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Synthesis, calcination and characterization of Nanosized ceria powders by self-propagating room temperature method",
volume = "39",
number = "5",
pages = "5007-5012",
doi = "10.1016/j.ceramint.2012.11.098"
}
Matović, B., Dukić, J., Babić, B. M., Bučevac, D., Dohčević-Mitrović, Z., Radović, M. B.,& Bošković, S. B.. (2013). Synthesis, calcination and characterization of Nanosized ceria powders by self-propagating room temperature method. in Ceramics International, 39(5), 5007-5012.
https://doi.org/10.1016/j.ceramint.2012.11.098
Matović B, Dukić J, Babić BM, Bučevac D, Dohčević-Mitrović Z, Radović MB, Bošković SB. Synthesis, calcination and characterization of Nanosized ceria powders by self-propagating room temperature method. in Ceramics International. 2013;39(5):5007-5012.
doi:10.1016/j.ceramint.2012.11.098 .
Matović, Branko, Dukić, Jelena, Babić, Biljana M., Bučevac, Dušan, Dohčević-Mitrović, Zorana , Radović, Marko B., Bošković, Snežana B., "Synthesis, calcination and characterization of Nanosized ceria powders by self-propagating room temperature method" in Ceramics International, 39, no. 5 (2013):5007-5012,
https://doi.org/10.1016/j.ceramint.2012.11.098 . .
3
8
9
8

Synthesis and characterization of Fe3+ doped titanium dioxide nanopowders

Babić, Biljana M.; Gulicovski, Jelena J.; Dohčević-Mitrović, Zorana ; Bučevac, Dušan; Prekajski-Đorđević, Marija D.; Zagorac, Jelena B.; Matović, Branko

(2012)

TY  - JOUR
AU  - Babić, Biljana M.
AU  - Gulicovski, Jelena J.
AU  - Dohčević-Mitrović, Zorana 
AU  - Bučevac, Dušan
AU  - Prekajski-Đorđević, Marija D.
AU  - Zagorac, Jelena B.
AU  - Matović, Branko
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4636
AB  - Titanium dioxide nanopowders, doped with different amounts of Fe3+ ions (0.3-5 mass%), were synthesized by acid-catalyzed sol-gel method in a non-aqueous medium. The obtained powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy and determination of izoelectric points as well as particle diameters. Careful investigation of porous structure was provided by application of nitrogen adsorption-desorption method. Structure analysis showed that the obtained nanopowders exhibited the anatase crystal structure, independent of the amount of iron dopants. The presence of Fe3+ ions in anatase decreases the value of isoelectric point of undoped TiO2. Unlike crystal structure, porosity parameters are strongly affected by the amount of iron ions incorporated in TiO2 lattice. The mesoporosity of TiO2 can be successfully controlled by changing the amount of iron dopants. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Synthesis and characterization of Fe3+ doped titanium dioxide nanopowders
VL  - 38
IS  - 1
SP  - 635
EP  - 640
DO  - 10.1016/j.ceramint.2011.07.053
ER  - 
@article{
author = "Babić, Biljana M. and Gulicovski, Jelena J. and Dohčević-Mitrović, Zorana  and Bučevac, Dušan and Prekajski-Đorđević, Marija D. and Zagorac, Jelena B. and Matović, Branko",
year = "2012",
abstract = "Titanium dioxide nanopowders, doped with different amounts of Fe3+ ions (0.3-5 mass%), were synthesized by acid-catalyzed sol-gel method in a non-aqueous medium. The obtained powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy and determination of izoelectric points as well as particle diameters. Careful investigation of porous structure was provided by application of nitrogen adsorption-desorption method. Structure analysis showed that the obtained nanopowders exhibited the anatase crystal structure, independent of the amount of iron dopants. The presence of Fe3+ ions in anatase decreases the value of isoelectric point of undoped TiO2. Unlike crystal structure, porosity parameters are strongly affected by the amount of iron ions incorporated in TiO2 lattice. The mesoporosity of TiO2 can be successfully controlled by changing the amount of iron dopants. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Synthesis and characterization of Fe3+ doped titanium dioxide nanopowders",
volume = "38",
number = "1",
pages = "635-640",
doi = "10.1016/j.ceramint.2011.07.053"
}
Babić, B. M., Gulicovski, J. J., Dohčević-Mitrović, Z., Bučevac, D., Prekajski-Đorđević, M. D., Zagorac, J. B.,& Matović, B.. (2012). Synthesis and characterization of Fe3+ doped titanium dioxide nanopowders. in Ceramics International, 38(1), 635-640.
https://doi.org/10.1016/j.ceramint.2011.07.053
Babić BM, Gulicovski JJ, Dohčević-Mitrović Z, Bučevac D, Prekajski-Đorđević MD, Zagorac JB, Matović B. Synthesis and characterization of Fe3+ doped titanium dioxide nanopowders. in Ceramics International. 2012;38(1):635-640.
doi:10.1016/j.ceramint.2011.07.053 .
Babić, Biljana M., Gulicovski, Jelena J., Dohčević-Mitrović, Zorana , Bučevac, Dušan, Prekajski-Đorđević, Marija D., Zagorac, Jelena B., Matović, Branko, "Synthesis and characterization of Fe3+ doped titanium dioxide nanopowders" in Ceramics International, 38, no. 1 (2012):635-640,
https://doi.org/10.1016/j.ceramint.2011.07.053 . .
13
11
13

Suppression of inherent ferromagnetism in Pr-doped CeO2 nanocrystals

Paunović, Novica M.; Dohčević-Mitrović, Zorana ; Scurtu, Rares; Askrabic, Sonja; Prekajski, Marija D.; Matović, Branko; Popović, Zoran V.

(2012)

TY  - JOUR
AU  - Paunović, Novica M.
AU  - Dohčević-Mitrović, Zorana 
AU  - Scurtu, Rares
AU  - Askrabic, Sonja
AU  - Prekajski, Marija D.
AU  - Matović, Branko
AU  - Popović, Zoran V.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4992
AB  - Ce1-xPrxO2-delta (0 LT = x LT = 0.4) nanocrystals were synthesized by self-propagating method and thoroughly characterized using X-ray diffraction, Raman and X-ray photoelectron spectroscopy and magnetic measurements. Undoped CeO2 nanocrystals exhibited intrinsic ferromagnetism at room temperature. Despite the increased concentration of oxygen vacancies in doped samples, our results showed that ferromagnetic ordering rapidly degrades with Pr doping. The suppression of ferromagnetism can be explained in terms of the different dopant valence state, the different nature of the vacancies formed in Pr-doped samples and their ability/disability to establish the ferromagnetic ordering.
T2  - Nanoscale
T1  - Suppression of inherent ferromagnetism in Pr-doped CeO2 nanocrystals
VL  - 4
IS  - 17
SP  - 5469
EP  - 5476
DO  - 10.1039/c2nr30799e
ER  - 
@article{
author = "Paunović, Novica M. and Dohčević-Mitrović, Zorana  and Scurtu, Rares and Askrabic, Sonja and Prekajski, Marija D. and Matović, Branko and Popović, Zoran V.",
year = "2012",
abstract = "Ce1-xPrxO2-delta (0 LT = x LT = 0.4) nanocrystals were synthesized by self-propagating method and thoroughly characterized using X-ray diffraction, Raman and X-ray photoelectron spectroscopy and magnetic measurements. Undoped CeO2 nanocrystals exhibited intrinsic ferromagnetism at room temperature. Despite the increased concentration of oxygen vacancies in doped samples, our results showed that ferromagnetic ordering rapidly degrades with Pr doping. The suppression of ferromagnetism can be explained in terms of the different dopant valence state, the different nature of the vacancies formed in Pr-doped samples and their ability/disability to establish the ferromagnetic ordering.",
journal = "Nanoscale",
title = "Suppression of inherent ferromagnetism in Pr-doped CeO2 nanocrystals",
volume = "4",
number = "17",
pages = "5469-5476",
doi = "10.1039/c2nr30799e"
}
Paunović, N. M., Dohčević-Mitrović, Z., Scurtu, R., Askrabic, S., Prekajski, M. D., Matović, B.,& Popović, Z. V.. (2012). Suppression of inherent ferromagnetism in Pr-doped CeO2 nanocrystals. in Nanoscale, 4(17), 5469-5476.
https://doi.org/10.1039/c2nr30799e
Paunović NM, Dohčević-Mitrović Z, Scurtu R, Askrabic S, Prekajski MD, Matović B, Popović ZV. Suppression of inherent ferromagnetism in Pr-doped CeO2 nanocrystals. in Nanoscale. 2012;4(17):5469-5476.
doi:10.1039/c2nr30799e .
Paunović, Novica M., Dohčević-Mitrović, Zorana , Scurtu, Rares, Askrabic, Sonja, Prekajski, Marija D., Matović, Branko, Popović, Zoran V., "Suppression of inherent ferromagnetism in Pr-doped CeO2 nanocrystals" in Nanoscale, 4, no. 17 (2012):5469-5476,
https://doi.org/10.1039/c2nr30799e . .
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Photocatalytic degradation of metoprolol in water suspension of TiO2 nanopowders prepared using sol-gel route

Šćepanović, Maja; Abramović, Biljana F.; Golubović, Aleksandar V.; Kler, Sanja; Grujić-Brojčin, Mirjana; Dohčević-Mitrović, Zorana ; Babić, Biljana M.; Matović, Branko; Popović, Zoran V.

(2012)

TY  - JOUR
AU  - Šćepanović, Maja
AU  - Abramović, Biljana F.
AU  - Golubović, Aleksandar V.
AU  - Kler, Sanja
AU  - Grujić-Brojčin, Mirjana
AU  - Dohčević-Mitrović, Zorana 
AU  - Babić, Biljana M.
AU  - Matović, Branko
AU  - Popović, Zoran V.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4656
AB  - Nanocrystalline titanium dioxide (TiO2) powders have been synthesized by sol-gel method using titanium tetrachloride (TiCl4) or tetrabutyl titanate (Ti(OC4H9)(4) as precursors, different alcohols and calcination temperatures in the range from 400 to 650 A degrees C. The photocatalytic activity of as-prepared powders has been tested for the degradation of metoprolol tartrate salt, a selective beta-blocker used to treat a variety of cardiovascular diseases, and compared to photocatalytic activity obtained from Degussa P25. Nanosized TiO2 powders prepared from TiCl4 and amyl-alcohol, calcined at 550 A degrees C, displayed an activity comparable to Degussa P25, whereas the sample from the same series, calcined at 650 A degrees C, showed higher photocatalytic activity in the whole range of the catalyst loading. Structural, morphological and surface properties of synthesized TiO2 nanopowders have been investigated by XRD, SEM, EDS and BET measurements, as well as FTIR and Raman spectroscopy, in order to find out the material properties which enable rapid an efficient decomposition of metoprolol under UV radiation.
T2  - Journal of Sol-gel Science and Technology
T1  - Photocatalytic degradation of metoprolol in water suspension of TiO2 nanopowders prepared using sol-gel route
VL  - 61
IS  - 2
SP  - 390
EP  - 402
DO  - 10.1007/s10971-011-2639-9
ER  - 
@article{
author = "Šćepanović, Maja and Abramović, Biljana F. and Golubović, Aleksandar V. and Kler, Sanja and Grujić-Brojčin, Mirjana and Dohčević-Mitrović, Zorana  and Babić, Biljana M. and Matović, Branko and Popović, Zoran V.",
year = "2012",
abstract = "Nanocrystalline titanium dioxide (TiO2) powders have been synthesized by sol-gel method using titanium tetrachloride (TiCl4) or tetrabutyl titanate (Ti(OC4H9)(4) as precursors, different alcohols and calcination temperatures in the range from 400 to 650 A degrees C. The photocatalytic activity of as-prepared powders has been tested for the degradation of metoprolol tartrate salt, a selective beta-blocker used to treat a variety of cardiovascular diseases, and compared to photocatalytic activity obtained from Degussa P25. Nanosized TiO2 powders prepared from TiCl4 and amyl-alcohol, calcined at 550 A degrees C, displayed an activity comparable to Degussa P25, whereas the sample from the same series, calcined at 650 A degrees C, showed higher photocatalytic activity in the whole range of the catalyst loading. Structural, morphological and surface properties of synthesized TiO2 nanopowders have been investigated by XRD, SEM, EDS and BET measurements, as well as FTIR and Raman spectroscopy, in order to find out the material properties which enable rapid an efficient decomposition of metoprolol under UV radiation.",
journal = "Journal of Sol-gel Science and Technology",
title = "Photocatalytic degradation of metoprolol in water suspension of TiO2 nanopowders prepared using sol-gel route",
volume = "61",
number = "2",
pages = "390-402",
doi = "10.1007/s10971-011-2639-9"
}
Šćepanović, M., Abramović, B. F., Golubović, A. V., Kler, S., Grujić-Brojčin, M., Dohčević-Mitrović, Z., Babić, B. M., Matović, B.,& Popović, Z. V.. (2012). Photocatalytic degradation of metoprolol in water suspension of TiO2 nanopowders prepared using sol-gel route. in Journal of Sol-gel Science and Technology, 61(2), 390-402.
https://doi.org/10.1007/s10971-011-2639-9
Šćepanović M, Abramović BF, Golubović AV, Kler S, Grujić-Brojčin M, Dohčević-Mitrović Z, Babić BM, Matović B, Popović ZV. Photocatalytic degradation of metoprolol in water suspension of TiO2 nanopowders prepared using sol-gel route. in Journal of Sol-gel Science and Technology. 2012;61(2):390-402.
doi:10.1007/s10971-011-2639-9 .
Šćepanović, Maja, Abramović, Biljana F., Golubović, Aleksandar V., Kler, Sanja, Grujić-Brojčin, Mirjana, Dohčević-Mitrović, Zorana , Babić, Biljana M., Matović, Branko, Popović, Zoran V., "Photocatalytic degradation of metoprolol in water suspension of TiO2 nanopowders prepared using sol-gel route" in Journal of Sol-gel Science and Technology, 61, no. 2 (2012):390-402,
https://doi.org/10.1007/s10971-011-2639-9 . .
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