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Blagojević, Vladimir A.

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  • Blagojević, Vladimir A. (7)

Author's Bibliography

Kinetics of thermally activated processes in cordierite-based ceramics

Obradović, Nina; Blagojević, Vladimir A.; Filipović, Suzana; Đorđević, Nataša; Kosanović, Darko; Marković, Smilja; Kachlik, Martin; Maca, Karel; Pavlović, Vladimir B.

(Springer, 2019)

TY  - JOUR
AU  - Obradović, Nina
AU  - Blagojević, Vladimir A.
AU  - Filipović, Suzana
AU  - Đorđević, Nataša
AU  - Kosanović, Darko
AU  - Marković, Smilja
AU  - Kachlik, Martin
AU  - Maca, Karel
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/7048
AB  - Thermally activated processes in cordierite-based ceramics were investigated to determine the effect of the mechanical activation and the addition of TeO2 on kinetic and thermodynamic parameters of these processes. Using a combination of dilatometry and DTA measurements in the 100–1400 °C temperature range, it was established that both the mechanical activation and the addition of TeO2 have a significant effect on processes in cordierite-based ceramics. A combination of 5 mass% addition of TeO2 and mechanical activation for 40 min reduced the sintering temperature of cordierite ceramics to around 1100 °C. In addition, the analysis of DTA measurements of mechanically activated samples indicates that the mechanical activation leads to intensification of the cordierite formation through an increase in concentration of surface defects and an increase in grain contact surface in the initial powder.
PB  - Springer
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Kinetics of thermally activated processes in cordierite-based ceramics
SP  - 2989
EP  - 2998
VL  - 138
DO  - 10.1007/s10973-018-7924-1
ER  - 
@article{
author = "Obradović, Nina and Blagojević, Vladimir A. and Filipović, Suzana and Đorđević, Nataša and Kosanović, Darko and Marković, Smilja and Kachlik, Martin and Maca, Karel and Pavlović, Vladimir B.",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/7048",
abstract = "Thermally activated processes in cordierite-based ceramics were investigated to determine the effect of the mechanical activation and the addition of TeO2 on kinetic and thermodynamic parameters of these processes. Using a combination of dilatometry and DTA measurements in the 100–1400 °C temperature range, it was established that both the mechanical activation and the addition of TeO2 have a significant effect on processes in cordierite-based ceramics. A combination of 5 mass% addition of TeO2 and mechanical activation for 40 min reduced the sintering temperature of cordierite ceramics to around 1100 °C. In addition, the analysis of DTA measurements of mechanically activated samples indicates that the mechanical activation leads to intensification of the cordierite formation through an increase in concentration of surface defects and an increase in grain contact surface in the initial powder.",
publisher = "Springer",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Kinetics of thermally activated processes in cordierite-based ceramics",
pages = "2989-2998",
volume = "138",
doi = "10.1007/s10973-018-7924-1"
}
Obradović, N., Blagojević, V. A., Filipović, S., Đorđević, N., Kosanović, D., Marković, S., Kachlik, M., Maca, K.,& Pavlović, V. B. (2019). Kinetics of thermally activated processes in cordierite-based ceramics.
Journal of Thermal Analysis and CalorimetrySpringer., 138, 2989-2998.
https://doi.org/10.1007/s10973-018-7924-1
Obradović N, Blagojević VA, Filipović S, Đorđević N, Kosanović D, Marković S, Kachlik M, Maca K, Pavlović VB. Kinetics of thermally activated processes in cordierite-based ceramics. Journal of Thermal Analysis and Calorimetry. 2019;138:2989-2998
Obradović Nina, Blagojević Vladimir A., Filipović Suzana, Đorđević Nataša, Kosanović Darko, Marković Smilja, Kachlik Martin, Maca Karel, Pavlović Vladimir B., "Kinetics of thermally activated processes in cordierite-based ceramics" 138 (2019):2989-2998,
https://doi.org/10.1007/s10973-018-7924-1 .
1
1
1

Kinetics of thermally activated processes in cordierite-based ceramics

Obradović, Nina; Blagojević, Vladimir A.; Filipović, Suzana; Đorđević, Nataša; Kosanović, Darko; Marković, Smilja; Kachlik, Martin; Maca, Karel; Pavlović, Vladimir B.

(Springer, 2019)

TY  - JOUR
AU  - Obradović, Nina
AU  - Blagojević, Vladimir A.
AU  - Filipović, Suzana
AU  - Đorđević, Nataša
AU  - Kosanović, Darko
AU  - Marković, Smilja
AU  - Kachlik, Martin
AU  - Maca, Karel
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/4558
AB  - Thermally activated processes in cordierite-based ceramics were investigated to determine the effect of the mechanical activation and the addition of TeO2 on kinetic and thermodynamic parameters of these processes. Using a combination of dilatometry and DTA measurements in the 100–1400 °C temperature range, it was established that both the mechanical activation and the addition of TeO2 have a significant effect on processes in cordierite-based ceramics. A combination of 5 mass% addition of TeO2 and mechanical activation for 40 min reduced the sintering temperature of cordierite ceramics to around 1100 °C. In addition, the analysis of DTA measurements of mechanically activated samples indicates that the mechanical activation leads to intensification of the cordierite formation through an increase in concentration of surface defects and an increase in grain contact surface in the initial powder.
PB  - Springer
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Kinetics of thermally activated processes in cordierite-based ceramics
SP  - 2989
EP  - 2998
VL  - 138
DO  - 10.1007/s10973-018-7924-1
ER  - 
@article{
author = "Obradović, Nina and Blagojević, Vladimir A. and Filipović, Suzana and Đorđević, Nataša and Kosanović, Darko and Marković, Smilja and Kachlik, Martin and Maca, Karel and Pavlović, Vladimir B.",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/4558",
abstract = "Thermally activated processes in cordierite-based ceramics were investigated to determine the effect of the mechanical activation and the addition of TeO2 on kinetic and thermodynamic parameters of these processes. Using a combination of dilatometry and DTA measurements in the 100–1400 °C temperature range, it was established that both the mechanical activation and the addition of TeO2 have a significant effect on processes in cordierite-based ceramics. A combination of 5 mass% addition of TeO2 and mechanical activation for 40 min reduced the sintering temperature of cordierite ceramics to around 1100 °C. In addition, the analysis of DTA measurements of mechanically activated samples indicates that the mechanical activation leads to intensification of the cordierite formation through an increase in concentration of surface defects and an increase in grain contact surface in the initial powder.",
publisher = "Springer",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Kinetics of thermally activated processes in cordierite-based ceramics",
pages = "2989-2998",
volume = "138",
doi = "10.1007/s10973-018-7924-1"
}
Obradović, N., Blagojević, V. A., Filipović, S., Đorđević, N., Kosanović, D., Marković, S., Kachlik, M., Maca, K.,& Pavlović, V. B. (2019). Kinetics of thermally activated processes in cordierite-based ceramics.
Journal of Thermal Analysis and CalorimetrySpringer., 138, 2989-2998.
https://doi.org/10.1007/s10973-018-7924-1
Obradović N, Blagojević VA, Filipović S, Đorđević N, Kosanović D, Marković S, Kachlik M, Maca K, Pavlović VB. Kinetics of thermally activated processes in cordierite-based ceramics. Journal of Thermal Analysis and Calorimetry. 2019;138:2989-2998
Obradović Nina, Blagojević Vladimir A., Filipović Suzana, Đorđević Nataša, Kosanović Darko, Marković Smilja, Kachlik Martin, Maca Karel, Pavlović Vladimir B., "Kinetics of thermally activated processes in cordierite-based ceramics" 138 (2019):2989-2998,
https://doi.org/10.1007/s10973-018-7924-1 .
1
1
1

Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films

Peleš, Adriana; Aleksić, Obrad S.; Pavlović, Vera P.; Đoković, Vladimir; Dojčilović, Radovan; Nikolić, Z.; Marinković, F.; Mitrić, Miodrag; Blagojević, Vladimir A.; Vlahović, Branislav; Pavlović, Vladimir B.

(IOP Publishing, 2018)

TY  - JOUR
AU  - Peleš, Adriana
AU  - Aleksić, Obrad S.
AU  - Pavlović, Vera P.
AU  - Đoković, Vladimir
AU  - Dojčilović, Radovan
AU  - Nikolić, Z.
AU  - Marinković, F.
AU  - Mitrić, Miodrag
AU  - Blagojević, Vladimir A.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/4079
AB  - The influence of the mechanical activation of ZnO nanoparticle fillers on the structural and electrical properties of the matrix of poly(vinylidenefluoride)-ZnO (PVDF-ZnO) films was investigated. Transmission electron microscopy and scanning electron microscopy analyses showed that mechanical activation in a high energy planetary ball mill reduces the size of ZnO particles. X-ray diffraction and Raman spectroscopy revealed that PVDF crystallized predominantly as the γ-phase. Non-activated ZnO filler reduces the degree of the crystallinity of the matrix and promotes crystallization of α-phase of PVDF in the film, while the fillers activated for 5 and 10 min induce crystallization of β-phase, indicating that mechanical activation of the filler can be used as a general method for fabrication of PVDF composites with increased content of piezoelectric β-phase crystals. Dielectric spectroscopy measurements show that polymer composite with the high content of β-phase (with ZnO filler activated for 5 min) exhibits the highest value of dielectric permittivity in 150-400 K range of temperatures. Kinetic analysis shows combined effects of increased surface area and increased concentration of surface defects on the interactions between polymer chains and activated nanoparticles. © 2018 IOP Publishing Ltd.
PB  - IOP Publishing
T2  - Physica Scripta
T1  - Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films
SP  - 105801
VL  - 93
DO  - 10.1088/1402-4896/aad749
ER  - 
@article{
author = "Peleš, Adriana and Aleksić, Obrad S. and Pavlović, Vera P. and Đoković, Vladimir and Dojčilović, Radovan and Nikolić, Z. and Marinković, F. and Mitrić, Miodrag and Blagojević, Vladimir A. and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/4079",
abstract = "The influence of the mechanical activation of ZnO nanoparticle fillers on the structural and electrical properties of the matrix of poly(vinylidenefluoride)-ZnO (PVDF-ZnO) films was investigated. Transmission electron microscopy and scanning electron microscopy analyses showed that mechanical activation in a high energy planetary ball mill reduces the size of ZnO particles. X-ray diffraction and Raman spectroscopy revealed that PVDF crystallized predominantly as the γ-phase. Non-activated ZnO filler reduces the degree of the crystallinity of the matrix and promotes crystallization of α-phase of PVDF in the film, while the fillers activated for 5 and 10 min induce crystallization of β-phase, indicating that mechanical activation of the filler can be used as a general method for fabrication of PVDF composites with increased content of piezoelectric β-phase crystals. Dielectric spectroscopy measurements show that polymer composite with the high content of β-phase (with ZnO filler activated for 5 min) exhibits the highest value of dielectric permittivity in 150-400 K range of temperatures. Kinetic analysis shows combined effects of increased surface area and increased concentration of surface defects on the interactions between polymer chains and activated nanoparticles. © 2018 IOP Publishing Ltd.",
publisher = "IOP Publishing",
journal = "Physica Scripta",
title = "Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films",
pages = "105801",
volume = "93",
doi = "10.1088/1402-4896/aad749"
}
Peleš, A., Aleksić, O. S., Pavlović, V. P., Đoković, V., Dojčilović, R., Nikolić, Z., Marinković, F., Mitrić, M., Blagojević, V. A., Vlahović, B.,& Pavlović, V. B. (2018). Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films.
Physica ScriptaIOP Publishing., 93, 105801.
https://doi.org/10.1088/1402-4896/aad749
Peleš A, Aleksić OS, Pavlović VP, Đoković V, Dojčilović R, Nikolić Z, Marinković F, Mitrić M, Blagojević VA, Vlahović B, Pavlović VB. Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films. Physica Scripta. 2018;93:105801
Peleš Adriana, Aleksić Obrad S., Pavlović Vera P., Đoković Vladimir, Dojčilović Radovan, Nikolić Z., Marinković F., Mitrić Miodrag, Blagojević Vladimir A., Vlahović Branislav, Pavlović Vladimir B., "Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films" 93 (2018):105801,
https://doi.org/10.1088/1402-4896/aad749 .
1
6
4
6

Influence of mechanical activation on functional properties of barium hexaferrite ceramics

Kosanović, Darko; Blagojević, Vladimir A.; Maričić, Aleksa; Aleksić, S.; Pavlović, Vera P.; Pavlović, Vladimir B.; Vlahović, Branislav

(Elsevier, 2018)

TY  - JOUR
AU  - Kosanović, Darko
AU  - Blagojević, Vladimir A.
AU  - Maričić, Aleksa
AU  - Aleksić, S.
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir B.
AU  - Vlahović, Branislav
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/4606
AB  - Barium hexaferrite ceramics were prepared using mechanically activated mixtures of iron and barium titanate. The 60:40 mass% Fe:BaTiO3 powder mixtures were mechanically activated for different times (100–240 min) and sintered at 1100 and 1200 °C in order to determine the influence of mechanical activation of the precursor on the magnetic and dielectric properties of the resulting barium hexaferrite ceramics. The final product contained 84–89 mass% of Ba2Fe22.46O38Ti1.54 phase, with higher content corresponding to longer mechanical activation of the precursor. XRD and Raman measurements indicated that the remainder of the sample consists of leftover BaTiO3 and hematite, which was formed by the oxidation of iron during mechanical activation and sintering in air. Magnetic properties of samples sintered at 1200 °C are superior to those sintered at 1100 °C, which can be attributed to higher Ba2Fe22.46O38Ti1.54 phase content. The position of the Curie temperature in 350–420 °C temperature region is consistent with 0.8:1 ratio of Ti to Ba. Maximum magnetization was observed for samples activated for 120 min. Dielectric properties of samples sintered at 1200 °C showed a dependence on frequency, with a significant drop in relative permittivity with an increase in frequency in the low-frequency region, and relatively constant values of relative permittivity in the high-frequency region. The tangent loss showed a decrease with increase in frequency, where peaks corresponding to the resonance of the electron hopping frequency with the external field were observed in the samples corresponding to the longer mechanical activation. Dielectric properties showed relatively small changes for samples activated longer than 150 min. © 2018 Elsevier Ltd and Techna Group S.r.l.
PB  - Elsevier
T2  - Ceramics International
T1  - Influence of mechanical activation on functional properties of barium hexaferrite ceramics
SP  - 6666
EP  - 6672
VL  - 44
IS  - 6
DO  - 10.1016/j.ceramint.2018.01.078
ER  - 
@article{
author = "Kosanović, Darko and Blagojević, Vladimir A. and Maričić, Aleksa and Aleksić, S. and Pavlović, Vera P. and Pavlović, Vladimir B. and Vlahović, Branislav",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/4606",
abstract = "Barium hexaferrite ceramics were prepared using mechanically activated mixtures of iron and barium titanate. The 60:40 mass% Fe:BaTiO3 powder mixtures were mechanically activated for different times (100–240 min) and sintered at 1100 and 1200 °C in order to determine the influence of mechanical activation of the precursor on the magnetic and dielectric properties of the resulting barium hexaferrite ceramics. The final product contained 84–89 mass% of Ba2Fe22.46O38Ti1.54 phase, with higher content corresponding to longer mechanical activation of the precursor. XRD and Raman measurements indicated that the remainder of the sample consists of leftover BaTiO3 and hematite, which was formed by the oxidation of iron during mechanical activation and sintering in air. Magnetic properties of samples sintered at 1200 °C are superior to those sintered at 1100 °C, which can be attributed to higher Ba2Fe22.46O38Ti1.54 phase content. The position of the Curie temperature in 350–420 °C temperature region is consistent with 0.8:1 ratio of Ti to Ba. Maximum magnetization was observed for samples activated for 120 min. Dielectric properties of samples sintered at 1200 °C showed a dependence on frequency, with a significant drop in relative permittivity with an increase in frequency in the low-frequency region, and relatively constant values of relative permittivity in the high-frequency region. The tangent loss showed a decrease with increase in frequency, where peaks corresponding to the resonance of the electron hopping frequency with the external field were observed in the samples corresponding to the longer mechanical activation. Dielectric properties showed relatively small changes for samples activated longer than 150 min. © 2018 Elsevier Ltd and Techna Group S.r.l.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Influence of mechanical activation on functional properties of barium hexaferrite ceramics",
pages = "6666-6672",
volume = "44",
number = "6",
doi = "10.1016/j.ceramint.2018.01.078"
}
Kosanović, D., Blagojević, V. A., Maričić, A., Aleksić, S., Pavlović, V. P., Pavlović, V. B.,& Vlahović, B. (2018). Influence of mechanical activation on functional properties of barium hexaferrite ceramics.
Ceramics InternationalElsevier., 44(6), 6666-6672.
https://doi.org/10.1016/j.ceramint.2018.01.078
Kosanović D, Blagojević VA, Maričić A, Aleksić S, Pavlović VP, Pavlović VB, Vlahović B. Influence of mechanical activation on functional properties of barium hexaferrite ceramics. Ceramics International. 2018;44(6):6666-6672
Kosanović Darko, Blagojević Vladimir A., Maričić Aleksa, Aleksić S., Pavlović Vera P., Pavlović Vladimir B., Vlahović Branislav, "Influence of mechanical activation on functional properties of barium hexaferrite ceramics" 44, no. 6 (2018):6666-6672,
https://doi.org/10.1016/j.ceramint.2018.01.078 .
3
7
7

Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films

Peleš, Adriana; Aleksić, Obrad S.; Pavlović, Vera P.; Đoković, Vladimir; Dojčilović, Radovan; Nikolić, Z.; Marinković, F.; Mitrić, Miodrag; Blagojević, Vladimir A.; Vlahović, Branislav; Pavlović, Vladimir B.

(IOP Publishing, 2018)

TY  - JOUR
AU  - Peleš, Adriana
AU  - Aleksić, Obrad S.
AU  - Pavlović, Vera P.
AU  - Đoković, Vladimir
AU  - Dojčilović, Radovan
AU  - Nikolić, Z.
AU  - Marinković, F.
AU  - Mitrić, Miodrag
AU  - Blagojević, Vladimir A.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/4608
AB  - The influence of the mechanical activation of ZnO nanoparticle fillers on the structural and electrical properties of the matrix of poly(vinylidenefluoride)-ZnO (PVDF-ZnO) films was investigated. Transmission electron microscopy and scanning electron microscopy analyses showed that mechanical activation in a high energy planetary ball mill reduces the size of ZnO particles. X-ray diffraction and Raman spectroscopy revealed that PVDF crystallized predominantly as the γ-phase. Non-activated ZnO filler reduces the degree of the crystallinity of the matrix and promotes crystallization of α-phase of PVDF in the film, while the fillers activated for 5 and 10 min induce crystallization of β-phase, indicating that mechanical activation of the filler can be used as a general method for fabrication of PVDF composites with increased content of piezoelectric β-phase crystals. Dielectric spectroscopy measurements show that polymer composite with the high content of β-phase (with ZnO filler activated for 5 min) exhibits the highest value of dielectric permittivity in 150-400 K range of temperatures. Kinetic analysis shows combined effects of increased surface area and increased concentration of surface defects on the interactions between polymer chains and activated nanoparticles. © 2018 IOP Publishing Ltd.
PB  - IOP Publishing
T2  - Physica Scripta
T1  - Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films
SP  - 105801
VL  - 93
DO  - 10.1088/1402-4896/aad749
ER  - 
@article{
author = "Peleš, Adriana and Aleksić, Obrad S. and Pavlović, Vera P. and Đoković, Vladimir and Dojčilović, Radovan and Nikolić, Z. and Marinković, F. and Mitrić, Miodrag and Blagojević, Vladimir A. and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/4608",
abstract = "The influence of the mechanical activation of ZnO nanoparticle fillers on the structural and electrical properties of the matrix of poly(vinylidenefluoride)-ZnO (PVDF-ZnO) films was investigated. Transmission electron microscopy and scanning electron microscopy analyses showed that mechanical activation in a high energy planetary ball mill reduces the size of ZnO particles. X-ray diffraction and Raman spectroscopy revealed that PVDF crystallized predominantly as the γ-phase. Non-activated ZnO filler reduces the degree of the crystallinity of the matrix and promotes crystallization of α-phase of PVDF in the film, while the fillers activated for 5 and 10 min induce crystallization of β-phase, indicating that mechanical activation of the filler can be used as a general method for fabrication of PVDF composites with increased content of piezoelectric β-phase crystals. Dielectric spectroscopy measurements show that polymer composite with the high content of β-phase (with ZnO filler activated for 5 min) exhibits the highest value of dielectric permittivity in 150-400 K range of temperatures. Kinetic analysis shows combined effects of increased surface area and increased concentration of surface defects on the interactions between polymer chains and activated nanoparticles. © 2018 IOP Publishing Ltd.",
publisher = "IOP Publishing",
journal = "Physica Scripta",
title = "Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films",
pages = "105801",
volume = "93",
doi = "10.1088/1402-4896/aad749"
}
Peleš, A., Aleksić, O. S., Pavlović, V. P., Đoković, V., Dojčilović, R., Nikolić, Z., Marinković, F., Mitrić, M., Blagojević, V. A., Vlahović, B.,& Pavlović, V. B. (2018). Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films.
Physica ScriptaIOP Publishing., 93, 105801.
https://doi.org/10.1088/1402-4896/aad749
Peleš A, Aleksić OS, Pavlović VP, Đoković V, Dojčilović R, Nikolić Z, Marinković F, Mitrić M, Blagojević VA, Vlahović B, Pavlović VB. Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films. Physica Scripta. 2018;93:105801
Peleš Adriana, Aleksić Obrad S., Pavlović Vera P., Đoković Vladimir, Dojčilović Radovan, Nikolić Z., Marinković F., Mitrić Miodrag, Blagojević Vladimir A., Vlahović Branislav, Pavlović Vladimir B., "Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films" 93 (2018):105801,
https://doi.org/10.1088/1402-4896/aad749 .
1
6
4
6

The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders

Živojinović, Jelena; Pavlović, Vera P.; Kosanović, Darko; Marković, Smilja; Krstić, Jugoslav; Blagojević, Vladimir A.; Pavlović, Vladimir B.

(Elsevier, 2017)

TY  - JOUR
AU  - Živojinović, Jelena
AU  - Pavlović, Vera P.
AU  - Kosanović, Darko
AU  - Marković, Smilja
AU  - Krstić, Jugoslav
AU  - Blagojević, Vladimir A.
AU  - Pavlović, Vladimir B.
PY  - 2017
UR  - http://dais.sanu.ac.rs/123456789/4617
AB  - Structural changes caused by mechanical activation of SrTiO3 powders were investigated using a variety of methods. Average crystallite size continuously decreased with increased activation time to around 20 nm after 120 min activation, while mesopore volume and specific surface area increased accordingly. Higher activation times lead to increased agglomeration of nanoparticles to form agglomerates of around 2 μm in size, ultimately producing a relatively stable powder, which exhibits lower microstrain than powders activated for shorter periods of time. Raman spectroscopy shows that the behavior of TO2 and TO4 modes is consistent with a decrease in particle size, while behavior of the nonpolar TO3 mode is markedly different, indicating relaxation of the inversion symmetry in polycrystalline SrTiO3. UV-VIS spectra show that mechanical activation has negligible effect on SrTiO3, with a slight shift caused by TiO2 contamination due to presence of air. Other than this, the mechanical activation process preserves the chemical purity of the initial powder.
PB  - Elsevier
T2  - Journal of Alloys and Compounds
T1  - The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders
SP  - 863
EP  - 870
VL  - 695
DO  - 10.1016/j.jallcom.2016.10.159
ER  - 
@article{
author = "Živojinović, Jelena and Pavlović, Vera P. and Kosanović, Darko and Marković, Smilja and Krstić, Jugoslav and Blagojević, Vladimir A. and Pavlović, Vladimir B.",
year = "2017",
url = "http://dais.sanu.ac.rs/123456789/4617",
abstract = "Structural changes caused by mechanical activation of SrTiO3 powders were investigated using a variety of methods. Average crystallite size continuously decreased with increased activation time to around 20 nm after 120 min activation, while mesopore volume and specific surface area increased accordingly. Higher activation times lead to increased agglomeration of nanoparticles to form agglomerates of around 2 μm in size, ultimately producing a relatively stable powder, which exhibits lower microstrain than powders activated for shorter periods of time. Raman spectroscopy shows that the behavior of TO2 and TO4 modes is consistent with a decrease in particle size, while behavior of the nonpolar TO3 mode is markedly different, indicating relaxation of the inversion symmetry in polycrystalline SrTiO3. UV-VIS spectra show that mechanical activation has negligible effect on SrTiO3, with a slight shift caused by TiO2 contamination due to presence of air. Other than this, the mechanical activation process preserves the chemical purity of the initial powder.",
publisher = "Elsevier",
journal = "Journal of Alloys and Compounds",
title = "The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders",
pages = "863-870",
volume = "695",
doi = "10.1016/j.jallcom.2016.10.159"
}
Živojinović, J., Pavlović, V. P., Kosanović, D., Marković, S., Krstić, J., Blagojević, V. A.,& Pavlović, V. B. (2017). The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders.
Journal of Alloys and CompoundsElsevier., 695, 863-870.
https://doi.org/10.1016/j.jallcom.2016.10.159
Živojinović J, Pavlović VP, Kosanović D, Marković S, Krstić J, Blagojević VA, Pavlović VB. The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders. Journal of Alloys and Compounds. 2017;695:863-870
Živojinović Jelena, Pavlović Vera P., Kosanović Darko, Marković Smilja, Krstić Jugoslav, Blagojević Vladimir A., Pavlović Vladimir B., "The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders" 695 (2017):863-870,
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The influence of alkaline cations on the mechanism and kinetics of dehydration of polymeric phthalatocuprate(II) dihydrates

Zdravković, Jelena D.; Poleti, Dejan; Rogan, Jelena; Blagojević, Vladimir A.; Mészáros, Katalin; Minić, Dragica M.

(Elsevier, 2017)

TY  - JOUR
AU  - Zdravković, Jelena D.
AU  - Poleti, Dejan
AU  - Rogan, Jelena
AU  - Blagojević, Vladimir A.
AU  - Mészáros, Katalin
AU  - Minić, Dragica M.
PY  - 2017
UR  - http://dais.sanu.ac.rs/123456789/4616
AB  - Thermal dehydration of two heterometallic complexes containing dianion of phthalic acid, pht, Na2[Cu(pht)2] · 2H2O, 1, and K2[Cu(pht)2] · 2H2O, 2, was investigated under non-isothermal conditions. Mechanism and kinetics of dehydration were analyzed in detail using TG/DSC/MS measurements, XRPD analysis and FT-IR spectroscopy. The reversibility of dehydration processes was identified. According to XRPD, dehydrated product of 1 maintains original structure, but dehydration of 2 undergoes structural transformation giving a dehydrated product of different crystal structure. In both cases dehydration process involves more than one elementary step, which was confirmed using isoconversional methods Deconvolution of this process using Fraiser-Suzuki function yielded two single step processes for 1 and 2. Subsequent kinetic analysis was performed using Màlek algorithm, resulting in the determination of kinetic triplets (Ea, A and f(α)) for each individual step. In addition, the dehydrated complexes were investigated as possible candidates for H2 adsorption, using molecular simulations.
PB  - Elsevier
T2  - Journal of Analytical and Applied Pyrolysis
T1  - The influence of alkaline cations on the mechanism and kinetics of dehydration of polymeric phthalatocuprate(II) dihydrates
SP  - 323
EP  - 331
VL  - 126
DO  - 10.1016/j.jaap.2017.05.014
ER  - 
@article{
author = "Zdravković, Jelena D. and Poleti, Dejan and Rogan, Jelena and Blagojević, Vladimir A. and Mészáros, Katalin and Minić, Dragica M.",
year = "2017",
url = "http://dais.sanu.ac.rs/123456789/4616",
abstract = "Thermal dehydration of two heterometallic complexes containing dianion of phthalic acid, pht, Na2[Cu(pht)2] · 2H2O, 1, and K2[Cu(pht)2] · 2H2O, 2, was investigated under non-isothermal conditions. Mechanism and kinetics of dehydration were analyzed in detail using TG/DSC/MS measurements, XRPD analysis and FT-IR spectroscopy. The reversibility of dehydration processes was identified. According to XRPD, dehydrated product of 1 maintains original structure, but dehydration of 2 undergoes structural transformation giving a dehydrated product of different crystal structure. In both cases dehydration process involves more than one elementary step, which was confirmed using isoconversional methods Deconvolution of this process using Fraiser-Suzuki function yielded two single step processes for 1 and 2. Subsequent kinetic analysis was performed using Màlek algorithm, resulting in the determination of kinetic triplets (Ea, A and f(α)) for each individual step. In addition, the dehydrated complexes were investigated as possible candidates for H2 adsorption, using molecular simulations.",
publisher = "Elsevier",
journal = "Journal of Analytical and Applied Pyrolysis",
title = "The influence of alkaline cations on the mechanism and kinetics of dehydration of polymeric phthalatocuprate(II) dihydrates",
pages = "323-331",
volume = "126",
doi = "10.1016/j.jaap.2017.05.014"
}
Zdravković, J. D., Poleti, D., Rogan, J., Blagojević, V. A., Mészáros, K.,& Minić, D. M. (2017). The influence of alkaline cations on the mechanism and kinetics of dehydration of polymeric phthalatocuprate(II) dihydrates.
Journal of Analytical and Applied PyrolysisElsevier., 126, 323-331.
https://doi.org/10.1016/j.jaap.2017.05.014
Zdravković JD, Poleti D, Rogan J, Blagojević VA, Mészáros K, Minić DM. The influence of alkaline cations on the mechanism and kinetics of dehydration of polymeric phthalatocuprate(II) dihydrates. Journal of Analytical and Applied Pyrolysis. 2017;126:323-331
Zdravković Jelena D., Poleti Dejan, Rogan Jelena, Blagojević Vladimir A., Mészáros Katalin, Minić Dragica M., "The influence of alkaline cations on the mechanism and kinetics of dehydration of polymeric phthalatocuprate(II) dihydrates" 126 (2017):323-331,
https://doi.org/10.1016/j.jaap.2017.05.014 .
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