Janković Častvan, Ivona

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Authority KeyName Variants
6d126d71-5d4c-46f2-9589-c86304196cd3
  • Janković Častvan, Ivona (18)
  • Janković-Častvan, Ivona (4)
  • Janković, Ivona (1)
Projects
Development, characterization and application nanostructured and composite electrocatalysts and interactive supports for fuel cells and water electrolysis Synthesis, processing and applications of nanostructured multifunctional materials with defined properties
Zero- to Three-Dimensional Nanostructures for Application in Electronics and Renewable Energy Sources: Synthesis, Characterization and Processing Nanostructured Functional and Composite Materials in Catalytic and Sorption Processes
Serbian Academy of Sciences and Arts, Project F-141 Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200175 (Institute of Technical Sciences of SASA, Belgrade)
Molecular designing of nanoparticles with controlled morphological and physicochemical characteristics and functional materials based on them Lithium-ion batteries and fuel cells - research and development
Ministry of Science of Montenegro, Project no. 01-2383/2 Ministry of Science of Montenegro, Project no. 01-460
Bilateral cooperation program between the Republic of Serbia and the Republic of Slovenia “Nanostructured and mesoporous functional materials with enhanced solar light driven photocatalytic activity” for 2018–2019 Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200017 (University of Belgrade, Institute of Nuclear Sciences 'Vinča', Belgrade-Vinča)
Bilateral collaboration between Serbia and Slovenia (BI-RS-18-19-026) Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200053 (University of Belgrade, Institute for Multidisciplinary Research)
Serbian Academy of Sciences and Arts, Project F-190

Author's Bibliography

Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry

Rajić, Vladimir; Stojković Simatović, Ivana; Veselinović, Ljiljana; Belošević Čavor, Jelena; Novaković, Mirjana; Popović, Maja; Škapin, Srečo Davor; Mojović, Miloš; Stojadinović, Stevan; Rac, Vladislav; Janković Častvan, Ivona; Marković, Smilja

(Royal Society of Chemistry, 2020)

TY  - JOUR
AU  - Rajić, Vladimir
AU  - Stojković Simatović, Ivana
AU  - Veselinović, Ljiljana
AU  - Belošević Čavor, Jelena
AU  - Novaković, Mirjana
AU  - Popović, Maja
AU  - Škapin, Srečo Davor
AU  - Mojović, Miloš
AU  - Stojadinović, Stevan
AU  - Rac, Vladislav
AU  - Janković Častvan, Ivona
AU  - Marković, Smilja
PY  - 2020
UR  - https://pubs.rsc.org/en/content/articlelanding/2020/cp/d0cp03377d
UR  - https://dais.sanu.ac.rs/123456789/9543
AB  - Eco-friendly and rapid microwave processing of a precipitate was used to produce Fe-doped zinc oxide (Zn1−xFexO, x = 0, 0.05, 0.1, 0.15 and 0.20; ZnO:Fe) nanoparticles, which were tested as catalysts toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in a moderately alkaline solution. The phase composition, crystal structure, morphology, textural properties, surface chemistry, optical properties and band structure were examined to comprehend the influence of Zn2+ partial substitution with Fe3+ on the catalytic activity of ZnO:Fe. Linear sweep voltammetry showed an improved catalytic activity of ZnO:5Fe toward the ORR, compared to pure ZnO, while with increased amounts of the Fe-dopant the activity decreased. The improvement was suggested by a more positive onset potential (0.394 V vs. RHE), current density (0.231 mA cm−2 at 0.150 V vs. RHE), and faster kinetics (Tafel slope, b = 248 mV dec−1), and it may be due to the synergistic effect of (1) a sufficient amount of surface oxygen vacancies, and (2) a certain amount of plate-like particles composed of crystallites with well developed (0001) and (000) facets. Quite the contrary, the OER study showed that the introduction of Fe3+ ions into the ZnO crystal structure resulted in enhanced catalytic activity of all ZnO:Fe samples, compared to pure ZnO, probably due to the modified binding energy and an optimized band structure. With the maximal current density of 1.066 mA cm−2 at 2.216 V vs. RHE, an onset potential of 1.856 V vs. RHE, and the smallest potential difference between the OER and ORR (ΔE = 1.58 V), ZnO:10Fe may be considered a promising bifunctional catalyst toward the OER/ORR in moderately alkaline solution. This study demonstrates that the electrocatalytic activity of ZnO:Fe strongly depends on the defect chemistry and consequently the band structure. Along with providing fundamental insight into the electrocatalytic activity of ZnO:Fe, the study also indicates an optimal stoichiometry for enhanced bifunctional activity toward the OER/ORR, compared to pure ZnO.
PB  - Royal Society of Chemistry
T2  - Physical Chemistry Chemical Physics
T1  - Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry
SP  - 22078
EP  - 22095
VL  - 22
IS  - 38
DO  - 10.1039/D0CP03377D
ER  - 
@article{
author = "Rajić, Vladimir and Stojković Simatović, Ivana and Veselinović, Ljiljana and Belošević Čavor, Jelena and Novaković, Mirjana and Popović, Maja and Škapin, Srečo Davor and Mojović, Miloš and Stojadinović, Stevan and Rac, Vladislav and Janković Častvan, Ivona and Marković, Smilja",
year = "2020",
url = "https://pubs.rsc.org/en/content/articlelanding/2020/cp/d0cp03377d, https://dais.sanu.ac.rs/123456789/9543",
abstract = "Eco-friendly and rapid microwave processing of a precipitate was used to produce Fe-doped zinc oxide (Zn1−xFexO, x = 0, 0.05, 0.1, 0.15 and 0.20; ZnO:Fe) nanoparticles, which were tested as catalysts toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in a moderately alkaline solution. The phase composition, crystal structure, morphology, textural properties, surface chemistry, optical properties and band structure were examined to comprehend the influence of Zn2+ partial substitution with Fe3+ on the catalytic activity of ZnO:Fe. Linear sweep voltammetry showed an improved catalytic activity of ZnO:5Fe toward the ORR, compared to pure ZnO, while with increased amounts of the Fe-dopant the activity decreased. The improvement was suggested by a more positive onset potential (0.394 V vs. RHE), current density (0.231 mA cm−2 at 0.150 V vs. RHE), and faster kinetics (Tafel slope, b = 248 mV dec−1), and it may be due to the synergistic effect of (1) a sufficient amount of surface oxygen vacancies, and (2) a certain amount of plate-like particles composed of crystallites with well developed (0001) and (000) facets. Quite the contrary, the OER study showed that the introduction of Fe3+ ions into the ZnO crystal structure resulted in enhanced catalytic activity of all ZnO:Fe samples, compared to pure ZnO, probably due to the modified binding energy and an optimized band structure. With the maximal current density of 1.066 mA cm−2 at 2.216 V vs. RHE, an onset potential of 1.856 V vs. RHE, and the smallest potential difference between the OER and ORR (ΔE = 1.58 V), ZnO:10Fe may be considered a promising bifunctional catalyst toward the OER/ORR in moderately alkaline solution. This study demonstrates that the electrocatalytic activity of ZnO:Fe strongly depends on the defect chemistry and consequently the band structure. Along with providing fundamental insight into the electrocatalytic activity of ZnO:Fe, the study also indicates an optimal stoichiometry for enhanced bifunctional activity toward the OER/ORR, compared to pure ZnO.",
publisher = "Royal Society of Chemistry",
journal = "Physical Chemistry Chemical Physics",
title = "Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry",
pages = "22078-22095",
volume = "22",
number = "38",
doi = "10.1039/D0CP03377D"
}
Rajić, V., Stojković Simatović, I., Veselinović, L., Belošević Čavor, J., Novaković, M., Popović, M., Škapin, S. D., Mojović, M., Stojadinović, S., Rac, V., Janković Častvan, I.,& Marković, S. (2020). Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry.
Physical Chemistry Chemical Physics
Royal Society of Chemistry., 22(38), 22078-22095.
https://doi.org/10.1039/D0CP03377D
Rajić V, Stojković Simatović I, Veselinović L, Belošević Čavor J, Novaković M, Popović M, Škapin SD, Mojović M, Stojadinović S, Rac V, Janković Častvan I, Marković S. Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry. Physical Chemistry Chemical Physics. 2020;22(38):22078-22095
Rajić Vladimir, Stojković Simatović Ivana, Veselinović Ljiljana, Belošević Čavor Jelena, Novaković Mirjana, Popović Maja, Škapin Srečo Davor, Mojović Miloš, Stojadinović Stevan, Rac Vladislav, Janković Častvan Ivona, Marković Smilja, "Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry" Physical Chemistry Chemical Physics, 22, no. 38 (2020):22078-22095,
https://doi.org/10.1039/D0CP03377D .

Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry

Rajić, Vladimir; Stojković Simatović, Ivana; Veselinović, Ljiljana; Belošević Čavor, Jelena; Novaković, Mirjana; Popović, Maja; Škapin, Srečo Davor; Mojović, Miloš; Stojadinović, Stevan; Rac, Vladislav; Janković Častvan, Ivona; Marković, Smilja

(Royal Society of Chemistry, 2020)

TY  - JOUR
AU  - Rajić, Vladimir
AU  - Stojković Simatović, Ivana
AU  - Veselinović, Ljiljana
AU  - Belošević Čavor, Jelena
AU  - Novaković, Mirjana
AU  - Popović, Maja
AU  - Škapin, Srečo Davor
AU  - Mojović, Miloš
AU  - Stojadinović, Stevan
AU  - Rac, Vladislav
AU  - Janković Častvan, Ivona
AU  - Marković, Smilja
PY  - 2020
UR  - https://pubs.rsc.org/en/content/articlelanding/2020/cp/d0cp03377d
UR  - https://dais.sanu.ac.rs/123456789/9544
AB  - Eco-friendly and rapid microwave processing of a precipitate was used to produce Fe-doped zinc oxide (Zn1−xFexO, x = 0, 0.05, 0.1, 0.15 and 0.20; ZnO:Fe) nanoparticles, which were tested as catalysts toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in a moderately alkaline solution. The phase composition, crystal structure, morphology, textural properties, surface chemistry, optical properties and band structure were examined to comprehend the influence of Zn2+ partial substitution with Fe3+ on the catalytic activity of ZnO:Fe. Linear sweep voltammetry showed an improved catalytic activity of ZnO:5Fe toward the ORR, compared to pure ZnO, while with increased amounts of the Fe-dopant the activity decreased. The improvement was suggested by a more positive onset potential (0.394 V vs. RHE), current density (0.231 mA cm−2 at 0.150 V vs. RHE), and faster kinetics (Tafel slope, b = 248 mV dec−1), and it may be due to the synergistic effect of (1) a sufficient amount of surface oxygen vacancies, and (2) a certain amount of plate-like particles composed of crystallites with well developed (0001) and (000) facets. Quite the contrary, the OER study showed that the introduction of Fe3+ ions into the ZnO crystal structure resulted in enhanced catalytic activity of all ZnO:Fe samples, compared to pure ZnO, probably due to the modified binding energy and an optimized band structure. With the maximal current density of 1.066 mA cm−2 at 2.216 V vs. RHE, an onset potential of 1.856 V vs. RHE, and the smallest potential difference between the OER and ORR (ΔE = 1.58 V), ZnO:10Fe may be considered a promising bifunctional catalyst toward the OER/ORR in moderately alkaline solution. This study demonstrates that the electrocatalytic activity of ZnO:Fe strongly depends on the defect chemistry and consequently the band structure. Along with providing fundamental insight into the electrocatalytic activity of ZnO:Fe, the study also indicates an optimal stoichiometry for enhanced bifunctional activity toward the OER/ORR, compared to pure ZnO.
PB  - Royal Society of Chemistry
T2  - Physical Chemistry Chemical Physics
T1  - Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry
SP  - 22078
EP  - 22095
VL  - 22
IS  - 38
DO  - 10.1039/D0CP03377D
ER  - 
@article{
author = "Rajić, Vladimir and Stojković Simatović, Ivana and Veselinović, Ljiljana and Belošević Čavor, Jelena and Novaković, Mirjana and Popović, Maja and Škapin, Srečo Davor and Mojović, Miloš and Stojadinović, Stevan and Rac, Vladislav and Janković Častvan, Ivona and Marković, Smilja",
year = "2020",
url = "https://pubs.rsc.org/en/content/articlelanding/2020/cp/d0cp03377d, https://dais.sanu.ac.rs/123456789/9544",
abstract = "Eco-friendly and rapid microwave processing of a precipitate was used to produce Fe-doped zinc oxide (Zn1−xFexO, x = 0, 0.05, 0.1, 0.15 and 0.20; ZnO:Fe) nanoparticles, which were tested as catalysts toward the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in a moderately alkaline solution. The phase composition, crystal structure, morphology, textural properties, surface chemistry, optical properties and band structure were examined to comprehend the influence of Zn2+ partial substitution with Fe3+ on the catalytic activity of ZnO:Fe. Linear sweep voltammetry showed an improved catalytic activity of ZnO:5Fe toward the ORR, compared to pure ZnO, while with increased amounts of the Fe-dopant the activity decreased. The improvement was suggested by a more positive onset potential (0.394 V vs. RHE), current density (0.231 mA cm−2 at 0.150 V vs. RHE), and faster kinetics (Tafel slope, b = 248 mV dec−1), and it may be due to the synergistic effect of (1) a sufficient amount of surface oxygen vacancies, and (2) a certain amount of plate-like particles composed of crystallites with well developed (0001) and (000) facets. Quite the contrary, the OER study showed that the introduction of Fe3+ ions into the ZnO crystal structure resulted in enhanced catalytic activity of all ZnO:Fe samples, compared to pure ZnO, probably due to the modified binding energy and an optimized band structure. With the maximal current density of 1.066 mA cm−2 at 2.216 V vs. RHE, an onset potential of 1.856 V vs. RHE, and the smallest potential difference between the OER and ORR (ΔE = 1.58 V), ZnO:10Fe may be considered a promising bifunctional catalyst toward the OER/ORR in moderately alkaline solution. This study demonstrates that the electrocatalytic activity of ZnO:Fe strongly depends on the defect chemistry and consequently the band structure. Along with providing fundamental insight into the electrocatalytic activity of ZnO:Fe, the study also indicates an optimal stoichiometry for enhanced bifunctional activity toward the OER/ORR, compared to pure ZnO.",
publisher = "Royal Society of Chemistry",
journal = "Physical Chemistry Chemical Physics",
title = "Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry",
pages = "22078-22095",
volume = "22",
number = "38",
doi = "10.1039/D0CP03377D"
}
Rajić, V., Stojković Simatović, I., Veselinović, L., Belošević Čavor, J., Novaković, M., Popović, M., Škapin, S. D., Mojović, M., Stojadinović, S., Rac, V., Janković Častvan, I.,& Marković, S. (2020). Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry.
Physical Chemistry Chemical Physics
Royal Society of Chemistry., 22(38), 22078-22095.
https://doi.org/10.1039/D0CP03377D
Rajić V, Stojković Simatović I, Veselinović L, Belošević Čavor J, Novaković M, Popović M, Škapin SD, Mojović M, Stojadinović S, Rac V, Janković Častvan I, Marković S. Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry. Physical Chemistry Chemical Physics. 2020;22(38):22078-22095
Rajić Vladimir, Stojković Simatović Ivana, Veselinović Ljiljana, Belošević Čavor Jelena, Novaković Mirjana, Popović Maja, Škapin Srečo Davor, Mojović Miloš, Stojadinović Stevan, Rac Vladislav, Janković Častvan Ivona, Marković Smilja, "Bifunctional catalytic activity of Zn1−xFexO toward the OER/ORR: seeking an optimal stoichiometry" Physical Chemistry Chemical Physics, 22, no. 38 (2020):22078-22095,
https://doi.org/10.1039/D0CP03377D .

Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method

Vasiljević, Zorka Ž.; Dojčinović, Milena; Vujančević, Jelena; Janković Častvan, Ivona; Ognjanović, M.; Tadić, N.; Stojadinović, S.; Branković, Goran; Nikolić, Maria Vesna

(Royal Society, 2020)

TY  - JOUR
AU  - Vasiljević, Zorka Ž.
AU  - Dojčinović, Milena
AU  - Vujančević, Jelena
AU  - Janković Častvan, Ivona
AU  - Ognjanović, M.
AU  - Tadić, N.
AU  - Stojadinović, S.
AU  - Branković, Goran
AU  - Nikolić, Maria Vesna
PY  - 2020
UR  - http://dais.sanu.ac.rs/123456789/9107
AB  - The aim of this work was to synthesize semiconducting oxide nanoparticles using a simple method with low production cost to be applied in natural sunlight for photocatalytic degradation of pollutants in waste water. Iron titanate (Fe2TiO5) nanoparticles with an orthorhombic structure were successfully synthesized using a modified sol–gel method and calcination at 750°C. The as-prepared Fe2TiO5 nanoparticles exhibited a moderate specific surface area. The mesoporous Fe2TiO5 nanoparticles possessed strong absorption in the visible-light region and the band gap was estimated to be around 2.16 eV. The photocatalytic activity was evaluated by the degradation of methylene blue under natural sunlight. The effect of parameters such as the amount of catalyst, initial concentration of the dye and pH of the dye solution on the removal efficiency of methylene blue was investigated. Fe2TiO5 showed high degradation efficiency in a strong alkaline medium that can be the result of the facilitated formation of OH radicals due to an increased concentration of hydroxyl ions.
PB  - Royal Society
T2  - Royal Society Open Science
T1  - Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method
VL  - 7
IS  - 9
DO  - 10.1098/rsos.200708
ER  - 
@article{
author = "Vasiljević, Zorka Ž. and Dojčinović, Milena and Vujančević, Jelena and Janković Častvan, Ivona and Ognjanović, M. and Tadić, N. and Stojadinović, S. and Branković, Goran and Nikolić, Maria Vesna",
year = "2020",
url = "http://dais.sanu.ac.rs/123456789/9107",
abstract = "The aim of this work was to synthesize semiconducting oxide nanoparticles using a simple method with low production cost to be applied in natural sunlight for photocatalytic degradation of pollutants in waste water. Iron titanate (Fe2TiO5) nanoparticles with an orthorhombic structure were successfully synthesized using a modified sol–gel method and calcination at 750°C. The as-prepared Fe2TiO5 nanoparticles exhibited a moderate specific surface area. The mesoporous Fe2TiO5 nanoparticles possessed strong absorption in the visible-light region and the band gap was estimated to be around 2.16 eV. The photocatalytic activity was evaluated by the degradation of methylene blue under natural sunlight. The effect of parameters such as the amount of catalyst, initial concentration of the dye and pH of the dye solution on the removal efficiency of methylene blue was investigated. Fe2TiO5 showed high degradation efficiency in a strong alkaline medium that can be the result of the facilitated formation of OH radicals due to an increased concentration of hydroxyl ions.",
publisher = "Royal Society",
journal = "Royal Society Open Science",
title = "Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method",
volume = "7",
number = "9",
doi = "10.1098/rsos.200708"
}
Vasiljević, Z. Ž., Dojčinović, M., Vujančević, J., Janković Častvan, I., Ognjanović, M., Tadić, N., Stojadinović, S., Branković, G.,& Nikolić, M. V. (2020). Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method.
Royal Society Open Science
Royal Society., 7(9).
https://doi.org/10.1098/rsos.200708
Vasiljević ZŽ, Dojčinović M, Vujančević J, Janković Častvan I, Ognjanović M, Tadić N, Stojadinović S, Branković G, Nikolić MV. Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method. Royal Society Open Science. 2020;7(9)
Vasiljević Zorka Ž., Dojčinović Milena, Vujančević Jelena, Janković Častvan Ivona, Ognjanović M., Tadić N., Stojadinović S., Branković Goran, Nikolić Maria Vesna, "Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method" Royal Society Open Science, 7, no. 9 (2020),
https://doi.org/10.1098/rsos.200708 .
2

Supporting information: Zdujić, M., Lukić, I., Kesić, Ž., Janković-Častvan, I., Marković, S., Jovalekić, Č., Skala, D., 2019. Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil. Advanced Powder Technology 30, 1141–1150. https://doi.org/10.1016/j.apt.2019.03.009

Zdujić, Miodrag; Lukić, Ivana; Kesić, Željka; Janković-Častvan, Ivona; Marković, Smilja; Jovalekić, Čedomir; Skala, Dejan

(Elsevier, 2019)

TY  - BOOK
AU  - Zdujić, Miodrag
AU  - Lukić, Ivana
AU  - Kesić, Željka
AU  - Janković-Častvan, Ivona
AU  - Marković, Smilja
AU  - Jovalekić, Čedomir
AU  - Skala, Dejan
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/7045
AB  - Fig. 1S. UV-vis diffuse reflectance spectra of CaO-SiO2 system; Fig. 2S. Kubelka-Munk transformed reflectance spectra (Tauc plot) of CaO;  Fig. 3S. Kubelka-Munk transformed reflectance spectra (Tauc plot) of SiO2;  Fig. 4S. Kubelka-Munk transformed reflectance spectra (Tauc plot) of CaO•SiO2 calcined at 700 °C/2 h; Fig. 5S. Kubelka-Munk transformed reflectance spectra (Tauc plot) of CaO•SiO2 calcined at 900 °C/48 h;  Fig. 6S. Kubelka-Munk transformed reflectance spectra (Tauc plot) of 3CaO•2SiO2 calcined at 700 °C/2 h and 900 °C/48 h;  Fig. 7S. Kubelka-Munk transformed reflectance spectra (Tauc plot) of 2CaO•SiO2 calcined at 700 °C/2 h and 900 °C/48 h; Fig. 8S. Kubelka-Munk transformed reflectance spectra (Tauc plot) of 3CaO•SiO2 calcined at 700 °C/2 h and 900 °C/48 h
PB  - Elsevier
T2  - Advanced Powder Technology
T1  - Supporting information: Zdujić, M., Lukić, I., Kesić, Ž., Janković-Častvan, I., Marković, S., Jovalekić, Č., Skala, D., 2019. Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil. Advanced Powder Technology 30, 1141–1150. https://doi.org/10.1016/j.apt.2019.03.009
VL  - 30
IS  - 6
ER  - 
@book{
author = "Zdujić, Miodrag and Lukić, Ivana and Kesić, Željka and Janković-Častvan, Ivona and Marković, Smilja and Jovalekić, Čedomir and Skala, Dejan",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/7045",
abstract = "Fig. 1S. UV-vis diffuse reflectance spectra of CaO-SiO2 system; Fig. 2S. Kubelka-Munk transformed reflectance spectra (Tauc plot) of CaO;  Fig. 3S. Kubelka-Munk transformed reflectance spectra (Tauc plot) of SiO2;  Fig. 4S. Kubelka-Munk transformed reflectance spectra (Tauc plot) of CaO•SiO2 calcined at 700 °C/2 h; Fig. 5S. Kubelka-Munk transformed reflectance spectra (Tauc plot) of CaO•SiO2 calcined at 900 °C/48 h;  Fig. 6S. Kubelka-Munk transformed reflectance spectra (Tauc plot) of 3CaO•2SiO2 calcined at 700 °C/2 h and 900 °C/48 h;  Fig. 7S. Kubelka-Munk transformed reflectance spectra (Tauc plot) of 2CaO•SiO2 calcined at 700 °C/2 h and 900 °C/48 h; Fig. 8S. Kubelka-Munk transformed reflectance spectra (Tauc plot) of 3CaO•SiO2 calcined at 700 °C/2 h and 900 °C/48 h",
publisher = "Elsevier",
journal = "Advanced Powder Technology",
title = "Supporting information: Zdujić, M., Lukić, I., Kesić, Ž., Janković-Častvan, I., Marković, S., Jovalekić, Č., Skala, D., 2019. Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil. Advanced Powder Technology 30, 1141–1150. https://doi.org/10.1016/j.apt.2019.03.009",
volume = "30",
number = "6"
}
Zdujić, M., Lukić, I., Kesić, Ž., Janković-Častvan, I., Marković, S., Jovalekić, Č.,& Skala, D. (2019). Supporting information: Zdujić, M., Lukić, I., Kesić, Ž., Janković-Častvan, I., Marković, S., Jovalekić, Č., Skala, D., 2019. Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil. Advanced Powder Technology 30, 1141–1150. https://doi.org/10.1016/j.apt.2019.03.009.
Advanced Powder Technology
Elsevier., 30(6).
Zdujić M, Lukić I, Kesić Ž, Janković-Častvan I, Marković S, Jovalekić Č, Skala D. Supporting information: Zdujić, M., Lukić, I., Kesić, Ž., Janković-Častvan, I., Marković, S., Jovalekić, Č., Skala, D., 2019. Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil. Advanced Powder Technology 30, 1141–1150. https://doi.org/10.1016/j.apt.2019.03.009. Advanced Powder Technology. 2019;30(6)
Zdujić Miodrag, Lukić Ivana, Kesić Željka, Janković-Častvan Ivona, Marković Smilja, Jovalekić Čedomir, Skala Dejan, "Supporting information: Zdujić, M., Lukić, I., Kesić, Ž., Janković-Častvan, I., Marković, S., Jovalekić, Č., Skala, D., 2019. Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil. Advanced Powder Technology 30, 1141–1150. https://doi.org/10.1016/j.apt.2019.03.009" Advanced Powder Technology, 30, no. 6 (2019)

Supporting information for the article: Zdujić, M., Lukić, I., Kesić, Ž., Janković-Častvan, I., Marković, S., Jovalekić, Č., Skala, D., 2019. Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil. Advanced Powder Technology. https://doi.org/10.1016/j.apt.2019.03.009

Zdujić, Miodrag; Lukić, Ivana; Kesić, Željka; Janković-Častvan, Ivona; Marković, Smilja; Jovalekić, Čedomir; Skala, Dejan

(2019)

TY  - BOOK
AU  - Zdujić, Miodrag
AU  - Lukić, Ivana
AU  - Kesić, Željka
AU  - Janković-Častvan, Ivona
AU  - Marković, Smilja
AU  - Jovalekić, Čedomir
AU  - Skala, Dejan
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0921883119300615
UR  - http://dais.sanu.ac.rs/123456789/5974
T2  - Advanced Powder Technology
T1  - Supporting information for the article: Zdujić, M., Lukić, I., Kesić, Ž., Janković-Častvan, I., Marković, S., Jovalekić, Č., Skala, D., 2019.  Synthesis  of  CaOSiO2  compounds  and  their  testing  as  heterogeneous  catalysts  for transesterification of sunflower oil. Advanced Powder Technology. https://doi.org/10.1016/j.apt.2019.03.009
ER  - 
@book{
author = "Zdujić, Miodrag and Lukić, Ivana and Kesić, Željka and Janković-Častvan, Ivona and Marković, Smilja and Jovalekić, Čedomir and Skala, Dejan",
year = "2019",
url = "http://www.sciencedirect.com/science/article/pii/S0921883119300615, http://dais.sanu.ac.rs/123456789/5974",
journal = "Advanced Powder Technology",
title = "Supporting information for the article: Zdujić, M., Lukić, I., Kesić, Ž., Janković-Častvan, I., Marković, S., Jovalekić, Č., Skala, D., 2019.  Synthesis  of  CaOSiO2  compounds  and  their  testing  as  heterogeneous  catalysts  for transesterification of sunflower oil. Advanced Powder Technology. https://doi.org/10.1016/j.apt.2019.03.009"
}
Zdujić, M., Lukić, I., Kesić, Ž., Janković-Častvan, I., Marković, S., Jovalekić, Č.,& Skala, D. (2019). Supporting information for the article: Zdujić, M., Lukić, I., Kesić, Ž., Janković-Častvan, I., Marković, S., Jovalekić, Č., Skala, D., 2019.  Synthesis  of  CaOSiO2  compounds  and  their  testing  as  heterogeneous  catalysts  for transesterification of sunflower oil. Advanced Powder Technology. https://doi.org/10.1016/j.apt.2019.03.009.
Advanced Powder Technology.
Zdujić M, Lukić I, Kesić Ž, Janković-Častvan I, Marković S, Jovalekić Č, Skala D. Supporting information for the article: Zdujić, M., Lukić, I., Kesić, Ž., Janković-Častvan, I., Marković, S., Jovalekić, Č., Skala, D., 2019.  Synthesis  of  CaOSiO2  compounds  and  their  testing  as  heterogeneous  catalysts  for transesterification of sunflower oil. Advanced Powder Technology. https://doi.org/10.1016/j.apt.2019.03.009. Advanced Powder Technology. 2019;
Zdujić Miodrag, Lukić Ivana, Kesić Željka, Janković-Častvan Ivona, Marković Smilja, Jovalekić Čedomir, Skala Dejan, "Supporting information for the article: Zdujić, M., Lukić, I., Kesić, Ž., Janković-Častvan, I., Marković, S., Jovalekić, Č., Skala, D., 2019.  Synthesis  of  CaOSiO2  compounds  and  their  testing  as  heterogeneous  catalysts  for transesterification of sunflower oil. Advanced Powder Technology. https://doi.org/10.1016/j.apt.2019.03.009" Advanced Powder Technology (2019)

Surfactant-assisted microwave processing of ZnO particles: a simple way for designing the surface-to-bulk defect ratio and improving photo(electro)catalytic properties

Marković, Smilja; Stojković Simatović, Ivana; Ahmetović, Sanita; Veselinović, Ljiljana; Stojadinović, Stevan; Rac, Vladislav; Škapin, Srečo Davor; Bajuk Bogdanović, Danica; Janković Častvan, Ivona; Uskoković, Dragan

(Royal Society of Chemistry, 2019)

TY  - JOUR
AU  - Marković, Smilja
AU  - Stojković Simatović, Ivana
AU  - Ahmetović, Sanita
AU  - Veselinović, Ljiljana
AU  - Stojadinović, Stevan
AU  - Rac, Vladislav
AU  - Škapin, Srečo Davor
AU  - Bajuk Bogdanović, Danica
AU  - Janković Častvan, Ivona
AU  - Uskoković, Dragan
PY  - 2019
UR  - https://pubs.rsc.org/en/content/articlelanding/2019/ra/c9ra02553g
UR  - http://dais.sanu.ac.rs/123456789/6272
AB  - ZnO nanopowders were produced using microwave processing of a precipitate and applied as a photoanode for photoelectrochemical water splitting. Two different surfactants, cetyltrimethylammonium bromide (CTAB) as the cationic and Pluronic F127 as the non-ionic one, were employed to in situ adjust the surface-to-bulk defect ratio in the ZnO crystal structure and further to modify the photo(electro)catalytic activity of the ZnO photoanode. The crystal structure, morphological, textural, optical and photo(electro)catalytic properties of ZnO particles were studied in detail to explain the profound effects of the surfactants on the photoanode activity. The ZnO/CTAB photoanode displayed the highest photocurrent density of 27 mA g−1, compared to ZnO (10.4 mA g−1) and ZnO/F127 photoanodes (20 mA g−1) at 1.5 V vs. SCE in 0.1 M Na2SO4 under visible illumination of 90 mW cm−2. A significant shift of the overpotential toward lower values was also observed when photoanodes were illuminated. The highest shift of the overpotential, from 1.296 to 0.248 V vs. SCE, was recorded when the ZnO/CTAB photanode was illuminated. The ZnO/CTAB photoanode provides efficient charge transfer across the electrode/electrolyte interface, with a longer lifetime of photogenerated electron–hole pairs and reduced possibility of charge recombination. The photoconversion efficiency was improved from 1.4% for ZnO and 0.9% for ZnO/F127 to 4.2% for ZnO/CTAB at 0.510 mV. A simple procedure for the synthesis of ZnO particles with improved photo(electro)catalytic properties was established and it was found that even a small amount of CTAB used during processing of ZnO increases the surface-to-bulk defect ratio. Optimization of the surface-to-bulk defect ratio in ZnO materials enables increase of the absorption capacity for visible light, rendering of the recombination rate of the photogenerated pair, as well as increase of both the photocurrent density and photoconversion efficiency.
PB  - Royal Society of Chemistry
T2  - RSC Advances
T1  - Surfactant-assisted microwave processing of ZnO particles: a simple way for designing the surface-to-bulk defect ratio and improving photo(electro)catalytic properties
SP  - 17165
EP  - 17178
VL  - 9
IS  - 30
DO  - 10.1039/C9RA02553G
ER  - 
@article{
author = "Marković, Smilja and Stojković Simatović, Ivana and Ahmetović, Sanita and Veselinović, Ljiljana and Stojadinović, Stevan and Rac, Vladislav and Škapin, Srečo Davor and Bajuk Bogdanović, Danica and Janković Častvan, Ivona and Uskoković, Dragan",
year = "2019",
url = "https://pubs.rsc.org/en/content/articlelanding/2019/ra/c9ra02553g, http://dais.sanu.ac.rs/123456789/6272",
abstract = "ZnO nanopowders were produced using microwave processing of a precipitate and applied as a photoanode for photoelectrochemical water splitting. Two different surfactants, cetyltrimethylammonium bromide (CTAB) as the cationic and Pluronic F127 as the non-ionic one, were employed to in situ adjust the surface-to-bulk defect ratio in the ZnO crystal structure and further to modify the photo(electro)catalytic activity of the ZnO photoanode. The crystal structure, morphological, textural, optical and photo(electro)catalytic properties of ZnO particles were studied in detail to explain the profound effects of the surfactants on the photoanode activity. The ZnO/CTAB photoanode displayed the highest photocurrent density of 27 mA g−1, compared to ZnO (10.4 mA g−1) and ZnO/F127 photoanodes (20 mA g−1) at 1.5 V vs. SCE in 0.1 M Na2SO4 under visible illumination of 90 mW cm−2. A significant shift of the overpotential toward lower values was also observed when photoanodes were illuminated. The highest shift of the overpotential, from 1.296 to 0.248 V vs. SCE, was recorded when the ZnO/CTAB photanode was illuminated. The ZnO/CTAB photoanode provides efficient charge transfer across the electrode/electrolyte interface, with a longer lifetime of photogenerated electron–hole pairs and reduced possibility of charge recombination. The photoconversion efficiency was improved from 1.4% for ZnO and 0.9% for ZnO/F127 to 4.2% for ZnO/CTAB at 0.510 mV. A simple procedure for the synthesis of ZnO particles with improved photo(electro)catalytic properties was established and it was found that even a small amount of CTAB used during processing of ZnO increases the surface-to-bulk defect ratio. Optimization of the surface-to-bulk defect ratio in ZnO materials enables increase of the absorption capacity for visible light, rendering of the recombination rate of the photogenerated pair, as well as increase of both the photocurrent density and photoconversion efficiency.",
publisher = "Royal Society of Chemistry",
journal = "RSC Advances",
title = "Surfactant-assisted microwave processing of ZnO particles: a simple way for designing the surface-to-bulk defect ratio and improving photo(electro)catalytic properties",
pages = "17165-17178",
volume = "9",
number = "30",
doi = "10.1039/C9RA02553G"
}
Marković, S., Stojković Simatović, I., Ahmetović, S., Veselinović, L., Stojadinović, S., Rac, V., Škapin, S. D., Bajuk Bogdanović, D., Janković Častvan, I.,& Uskoković, D. (2019). Surfactant-assisted microwave processing of ZnO particles: a simple way for designing the surface-to-bulk defect ratio and improving photo(electro)catalytic properties.
RSC Advances
Royal Society of Chemistry., 9(30), 17165-17178.
https://doi.org/10.1039/C9RA02553G
Marković S, Stojković Simatović I, Ahmetović S, Veselinović L, Stojadinović S, Rac V, Škapin SD, Bajuk Bogdanović D, Janković Častvan I, Uskoković D. Surfactant-assisted microwave processing of ZnO particles: a simple way for designing the surface-to-bulk defect ratio and improving photo(electro)catalytic properties. RSC Advances. 2019;9(30):17165-17178
Marković Smilja, Stojković Simatović Ivana, Ahmetović Sanita, Veselinović Ljiljana, Stojadinović Stevan, Rac Vladislav, Škapin Srečo Davor, Bajuk Bogdanović Danica, Janković Častvan Ivona, Uskoković Dragan, "Surfactant-assisted microwave processing of ZnO particles: a simple way for designing the surface-to-bulk defect ratio and improving photo(electro)catalytic properties" RSC Advances, 9, no. 30 (2019):17165-17178,
https://doi.org/10.1039/C9RA02553G .
1
7
6
8

Structural, photocatalytic and photoelectrochemical characteristics of ZnO nanoparticles synthesized by a glycine-nitrate process

Dojčinović, Milena; Stojković Simatović, Ivana; Marković, Smilja; Janković Častvan, Ivona; Bajuk Bogdanović, Danica; Stojadinović, Stevan; Rac, Vladislav; Nikolić, Maria Vesna

(Budapest : [s. n.], 2019)

TY  - CONF
AU  - Dojčinović, Milena
AU  - Stojković Simatović, Ivana
AU  - Marković, Smilja
AU  - Janković Častvan, Ivona
AU  - Bajuk Bogdanović, Danica
AU  - Stojadinović, Stevan
AU  - Rac, Vladislav
AU  - Nikolić, Maria Vesna
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/6998
AB  - Zinc oxide is a semiconductor material which still, after a century of scientific research, shows great potential in modern day utilisements such as heterogenous photocatalysis of organic pollutants and as a photoanode material for efficient water splitting and oxygen generation. In this work zinc oxide was synthesized by a glycine-nitrate combustion process, which is a cheap, simple and efficient method for synthesizing transition metal oxides. The obtained powder was calcined at 400 and 500 °C and samples were characterized in detail using X-ray powder diffraction (XRPD), Fourier-trasform infrared spectroscopy (FTIR), Raman spectroscopy, field emission scanning electron microscopy (FESEM), photoluminescence spectroscopy (PL) and UV-Vis diffuse reflectance spectroscopy (DRS). Photoelectrocatalytic properties were investigated via electrochemical methods: linear voltammetry (LV), chronoamperometry (CA) and impedance spectroscopy (EIS). The results show that the obtained samples are nanocrystalline wurtzite zinc oxide with no impurities, with average particle diameters of 33 nm (annealed at 400 °C) and 48 nm (annealed at 500 °C). Both samples show significant amounts of various crystal deffects. The determined zinc oxide band gap was lower than the band gap of bulk zinc oxide. Photoelectrochemical measurements revealed that this material is photostable and reactive to light. Water oxidation is enhanced by exposing the light. Finally, photocatalytic properties were tested via determining kinetic parameters of organic pollutant decomposition. Both samples showed excellent photocatalytic activity by decomposing methylene blue and phenol.
PB  - Budapest : [s. n.]
C3  - Abstracts / International Workshop on Woman in Ceramic Science (WoCeram2019), April 7-9, 2019/ Budapest, Hungary, Novotel Danube Budapest
T1  - Structural, photocatalytic and photoelectrochemical characteristics of ZnO nanoparticles synthesized by a glycine-nitrate process
SP  - 16
EP  - 16
ER  - 
@conference{
author = "Dojčinović, Milena and Stojković Simatović, Ivana and Marković, Smilja and Janković Častvan, Ivona and Bajuk Bogdanović, Danica and Stojadinović, Stevan and Rac, Vladislav and Nikolić, Maria Vesna",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/6998",
abstract = "Zinc oxide is a semiconductor material which still, after a century of scientific research, shows great potential in modern day utilisements such as heterogenous photocatalysis of organic pollutants and as a photoanode material for efficient water splitting and oxygen generation. In this work zinc oxide was synthesized by a glycine-nitrate combustion process, which is a cheap, simple and efficient method for synthesizing transition metal oxides. The obtained powder was calcined at 400 and 500 °C and samples were characterized in detail using X-ray powder diffraction (XRPD), Fourier-trasform infrared spectroscopy (FTIR), Raman spectroscopy, field emission scanning electron microscopy (FESEM), photoluminescence spectroscopy (PL) and UV-Vis diffuse reflectance spectroscopy (DRS). Photoelectrocatalytic properties were investigated via electrochemical methods: linear voltammetry (LV), chronoamperometry (CA) and impedance spectroscopy (EIS). The results show that the obtained samples are nanocrystalline wurtzite zinc oxide with no impurities, with average particle diameters of 33 nm (annealed at 400 °C) and 48 nm (annealed at 500 °C). Both samples show significant amounts of various crystal deffects. The determined zinc oxide band gap was lower than the band gap of bulk zinc oxide. Photoelectrochemical measurements revealed that this material is photostable and reactive to light. Water oxidation is enhanced by exposing the light. Finally, photocatalytic properties were tested via determining kinetic parameters of organic pollutant decomposition. Both samples showed excellent photocatalytic activity by decomposing methylene blue and phenol.",
publisher = "Budapest : [s. n.]",
journal = "Abstracts / International Workshop on Woman in Ceramic Science (WoCeram2019), April 7-9, 2019/ Budapest, Hungary, Novotel Danube Budapest",
title = "Structural, photocatalytic and photoelectrochemical characteristics of ZnO nanoparticles synthesized by a glycine-nitrate process",
pages = "16-16"
}
Dojčinović, M., Stojković Simatović, I., Marković, S., Janković Častvan, I., Bajuk Bogdanović, D., Stojadinović, S., Rac, V.,& Nikolić, M. V. (2019). Structural, photocatalytic and photoelectrochemical characteristics of ZnO nanoparticles synthesized by a glycine-nitrate process.
Abstracts / International Workshop on Woman in Ceramic Science (WoCeram2019), April 7-9, 2019/ Budapest, Hungary, Novotel Danube Budapest
Budapest : [s. n.]., 16-16.
Dojčinović M, Stojković Simatović I, Marković S, Janković Častvan I, Bajuk Bogdanović D, Stojadinović S, Rac V, Nikolić MV. Structural, photocatalytic and photoelectrochemical characteristics of ZnO nanoparticles synthesized by a glycine-nitrate process. Abstracts / International Workshop on Woman in Ceramic Science (WoCeram2019), April 7-9, 2019/ Budapest, Hungary, Novotel Danube Budapest. 2019;:16-16
Dojčinović Milena, Stojković Simatović Ivana, Marković Smilja, Janković Častvan Ivona, Bajuk Bogdanović Danica, Stojadinović Stevan, Rac Vladislav, Nikolić Maria Vesna, "Structural, photocatalytic and photoelectrochemical characteristics of ZnO nanoparticles synthesized by a glycine-nitrate process" Abstracts / International Workshop on Woman in Ceramic Science (WoCeram2019), April 7-9, 2019/ Budapest, Hungary, Novotel Danube Budapest (2019):16-16

Photocatalytic degradation of methylene blue and oxytetracycline via sol-gel synthesized pseudobrookite

Vasiljević, Zorka Ž.; Dojčinović, Milena; Janković Častvan, Ivona; Vujančević, Jelena; Tadić, Nenad B.; Nikolić, Maria Vesna

(Belgrade : Institute of Technical Sciences of SASA, 2019)

TY  - CONF
AU  - Vasiljević, Zorka Ž.
AU  - Dojčinović, Milena
AU  - Janković Častvan, Ivona
AU  - Vujančević, Jelena
AU  - Tadić, Nenad B.
AU  - Nikolić, Maria Vesna
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/6967
AB  - Fe2TiO5 nanoparticles were synthesized by modified sol-gel method using Fe(NO3)3×9H2O and Ti(OC3H7)4 as starting reagents, oxalic acid as chilate agent and cetyltrimethylammonium bromide as surfactant. The aim of this study was to asses the photocatalytic degradaton of water pollutants, methylene blue and the antibiotic Oxytetracycline (OTC) using natural sunlight irradiation. As prepared nanoparticles were characterized by XRD, BET, FESEM and UV-vis DRS. The optimal operating conditions of photocatalytic degradation of water pollutants were achived by changing the pH of the solution and changing the concentration of photocatalyst.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia
T1  - Photocatalytic degradation of methylene blue and oxytetracycline via sol-gel synthesized pseudobrookite
SP  - 70
EP  - 70
ER  - 
@conference{
author = "Vasiljević, Zorka Ž. and Dojčinović, Milena and Janković Častvan, Ivona and Vujančević, Jelena and Tadić, Nenad B. and Nikolić, Maria Vesna",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/6967",
abstract = "Fe2TiO5 nanoparticles were synthesized by modified sol-gel method using Fe(NO3)3×9H2O and Ti(OC3H7)4 as starting reagents, oxalic acid as chilate agent and cetyltrimethylammonium bromide as surfactant. The aim of this study was to asses the photocatalytic degradaton of water pollutants, methylene blue and the antibiotic Oxytetracycline (OTC) using natural sunlight irradiation. As prepared nanoparticles were characterized by XRD, BET, FESEM and UV-vis DRS. The optimal operating conditions of photocatalytic degradation of water pollutants were achived by changing the pH of the solution and changing the concentration of photocatalyst.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia",
title = "Photocatalytic degradation of methylene blue and oxytetracycline via sol-gel synthesized pseudobrookite",
pages = "70-70"
}
Vasiljević, Z. Ž., Dojčinović, M., Janković Častvan, I., Vujančević, J., Tadić, N. B.,& Nikolić, M. V. (2019). Photocatalytic degradation of methylene blue and oxytetracycline via sol-gel synthesized pseudobrookite.
Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 70-70.
Vasiljević ZŽ, Dojčinović M, Janković Častvan I, Vujančević J, Tadić NB, Nikolić MV. Photocatalytic degradation of methylene blue and oxytetracycline via sol-gel synthesized pseudobrookite. Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia. 2019;:70-70
Vasiljević Zorka Ž., Dojčinović Milena, Janković Častvan Ivona, Vujančević Jelena, Tadić Nenad B., Nikolić Maria Vesna, "Photocatalytic degradation of methylene blue and oxytetracycline via sol-gel synthesized pseudobrookite" Program and the Book of abstracts / Eighteenth Young Researchers' Conference Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia (2019):70-70

Structure and photocatalytic properties of sol-gel synthesized pseudobrookite

Vasiljević, Zorka Ž.; Dojčinović, Milena; Janković Častvan, Ivona; Vujančević, Jelena; Tadić, Nenad B.; Nikolić, Maria Vesna

(Novi Sad : Faculty of Technology, 2019)

TY  - CONF
AU  - Vasiljević, Zorka Ž.
AU  - Dojčinović, Milena
AU  - Janković Častvan, Ivona
AU  - Vujančević, Jelena
AU  - Tadić, Nenad B.
AU  - Nikolić, Maria Vesna
PY  - 2019
UR  - http://dais.sanu.ac.rs/123456789/6988
AB  - Fe2TiO5 nanopartcles were synthesized by modified sol-gel method with aid of
Fe(NO3)3 9H2O and Ti(OC3H7)4 as starting reagents, oxalic acid as chilate agent and cetyltrimethylammonium bromide as surfactant. The aim of this study was to asses the photocatalytic degradaton of the antibiotic Oxytetracycline (OTC) using visible light irradiation. As prepared nanoparticles were characterized by XRD, BET, FESEM and UV-vis DRS. The optimal operating conditions of oxytetracycline photocatalytic degradation were achived by changing the pH of the solution and changing the concentration of photocatalyst.
PB  - Novi Sad : Faculty of Technology
C3  - Programme and book of abstracts / 13th Conference for Young Scientists in Ceramics (CYSC-2017), October 16-19, 2019, Novi Sad
T1  - Structure and photocatalytic properties of sol-gel synthesized pseudobrookite
SP  - 133
EP  - 133
ER  - 
@conference{
author = "Vasiljević, Zorka Ž. and Dojčinović, Milena and Janković Častvan, Ivona and Vujančević, Jelena and Tadić, Nenad B. and Nikolić, Maria Vesna",
year = "2019",
url = "http://dais.sanu.ac.rs/123456789/6988",
abstract = "Fe2TiO5 nanopartcles were synthesized by modified sol-gel method with aid of
Fe(NO3)3 9H2O and Ti(OC3H7)4 as starting reagents, oxalic acid as chilate agent and cetyltrimethylammonium bromide as surfactant. The aim of this study was to asses the photocatalytic degradaton of the antibiotic Oxytetracycline (OTC) using visible light irradiation. As prepared nanoparticles were characterized by XRD, BET, FESEM and UV-vis DRS. The optimal operating conditions of oxytetracycline photocatalytic degradation were achived by changing the pH of the solution and changing the concentration of photocatalyst.",
publisher = "Novi Sad : Faculty of Technology",
journal = "Programme and book of abstracts / 13th Conference for Young Scientists in Ceramics (CYSC-2017), October 16-19, 2019, Novi Sad",
title = "Structure and photocatalytic properties of sol-gel synthesized pseudobrookite",
pages = "133-133"
}
Vasiljević, Z. Ž., Dojčinović, M., Janković Častvan, I., Vujančević, J., Tadić, N. B.,& Nikolić, M. V. (2019). Structure and photocatalytic properties of sol-gel synthesized pseudobrookite.
Programme and book of abstracts / 13th Conference for Young Scientists in Ceramics (CYSC-2017), October 16-19, 2019, Novi Sad
Novi Sad : Faculty of Technology., 133-133.
Vasiljević ZŽ, Dojčinović M, Janković Častvan I, Vujančević J, Tadić NB, Nikolić MV. Structure and photocatalytic properties of sol-gel synthesized pseudobrookite. Programme and book of abstracts / 13th Conference for Young Scientists in Ceramics (CYSC-2017), October 16-19, 2019, Novi Sad. 2019;:133-133
Vasiljević Zorka Ž., Dojčinović Milena, Janković Častvan Ivona, Vujančević Jelena, Tadić Nenad B., Nikolić Maria Vesna, "Structure and photocatalytic properties of sol-gel synthesized pseudobrookite" Programme and book of abstracts / 13th Conference for Young Scientists in Ceramics (CYSC-2017), October 16-19, 2019, Novi Sad (2019):133-133

Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag

Nikolić, Irena; Marković, Smilja; Veselinović, Ljiljana; Radmilović, Vuk V.; Janković Častvan, Ivona; Radmilović, Velimir R.

(Elsevier, 2019)

TY  - JOUR
AU  - Nikolić, Irena
AU  - Marković, Smilja
AU  - Veselinović, Ljiljana
AU  - Radmilović, Vuk V.
AU  - Janković Častvan, Ivona
AU  - Radmilović, Velimir R.
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0167577X18315908
UR  - http://dais.sanu.ac.rs/123456789/4603
AB  - Pristine electric arc furnace slag (EAFS) as well as EAFS modified by alkali activation i.e. alkali activated slag (AAS) have found a novel application as adsorbents used in Cu2+ removal from sulfate solutions. The adsorption tests were carried in batch conditions and results have shown that alkali activation of EAFS enhances the Cu2+ adsorption. The adsorption process was found to follow a pseudo second-order kinetic model and occurs via formation of posnjakite (Cu4(SO4)(OH)6·H2O) on the surface of both, EAFS and AAS. Enhanced adsorption properties of AAS, compared to EAFS, are attributed to a more porous structure, larger specific surface area and an increased number of surface groups involved in the binding of Cu2+.
PB  - Elsevier
T2  - Materials Letters
T1  - Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag
SP  - 184
EP  - 188
VL  - 235
DO  - 10.1016/j.matlet.2018.10.027
ER  - 
@article{
author = "Nikolić, Irena and Marković, Smilja and Veselinović, Ljiljana and Radmilović, Vuk V. and Janković Častvan, Ivona and Radmilović, Velimir R.",
year = "2019",
url = "http://www.sciencedirect.com/science/article/pii/S0167577X18315908, http://dais.sanu.ac.rs/123456789/4603",
abstract = "Pristine electric arc furnace slag (EAFS) as well as EAFS modified by alkali activation i.e. alkali activated slag (AAS) have found a novel application as adsorbents used in Cu2+ removal from sulfate solutions. The adsorption tests were carried in batch conditions and results have shown that alkali activation of EAFS enhances the Cu2+ adsorption. The adsorption process was found to follow a pseudo second-order kinetic model and occurs via formation of posnjakite (Cu4(SO4)(OH)6·H2O) on the surface of both, EAFS and AAS. Enhanced adsorption properties of AAS, compared to EAFS, are attributed to a more porous structure, larger specific surface area and an increased number of surface groups involved in the binding of Cu2+.",
publisher = "Elsevier",
journal = "Materials Letters",
title = "Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag",
pages = "184-188",
volume = "235",
doi = "10.1016/j.matlet.2018.10.027"
}
Nikolić, I., Marković, S., Veselinović, L., Radmilović, V. V., Janković Častvan, I.,& Radmilović, V. R. (2019). Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag.
Materials Letters
Elsevier., 235, 184-188.
https://doi.org/10.1016/j.matlet.2018.10.027
Nikolić I, Marković S, Veselinović L, Radmilović VV, Janković Častvan I, Radmilović VR. Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag. Materials Letters. 2019;235:184-188
Nikolić Irena, Marković Smilja, Veselinović Ljiljana, Radmilović Vuk V., Janković Častvan Ivona, Radmilović Velimir R., "Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag" Materials Letters, 235 (2019):184-188,
https://doi.org/10.1016/j.matlet.2018.10.027 .
1
1

Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil

Zdujić, Miodrag; Lukić, Ivana; Kesić, Željka; Janković-Častvan, Ivona; Marković, Smilja; Jovalekić, Čedomir; Skala, Dejan

(Elsevier, 2019)

TY  - JOUR
AU  - Zdujić, Miodrag
AU  - Lukić, Ivana
AU  - Kesić, Željka
AU  - Janković-Častvan, Ivona
AU  - Marković, Smilja
AU  - Jovalekić, Čedomir
AU  - Skala, Dejan
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0921883119300615
UR  - http://dais.sanu.ac.rs/123456789/5142
AB  - The powder mixtures of calcium oxide (CaO) and silica gel (SiO2) in molar ratios of 1:1, 1.5:1, 2:1 and 3:1 were mechanochemically treated with the addition of water, and were subsequently calcined with a goal of synthesizing CaSiO3, Ca3Si2O7, Ca2SiO4 compounds and CaO/Ca2SiO4 two-phase mixture. The prepared materials were characterized by XRD, FTIR, SEM/EDS, particle size laser diffraction (PSLD), UV–vis diffuse reflectance spectroscopy (DRS), N2 adsorption/desorption isotherms, Hammett indicator for basic strength and volumetric analysis for free CaO content. The catalytic activity of calcium silicates with different Ca/Si ratios was tested in the transesterification of triacylglycerols (sunflower oil) with methanol. Samples obtained with initial composition 2CaO·SiO2 and 3CaO·SiO2 calcined at 700 °C, and 3CaO·SiO2 calcined at 900 °C had high catalytic activity, resulting with triacylglycerols conversion and fatty acids methyl ester formation (FAME or biodiesel) above 96%. The activity of these samples can be attributed to the existence of free CaO defined by CaO/Ca2SiO4 complex mixture. The effect of different amount of catalyst used for transesterification (0.2–2 wt%) was analyzed using the most active catalyst i.e. 3CaO·SiO2 calcined at 700 °C as well as possibility of its reuse for biodiesel synthesis. It was also found that CaSiO3, Ca3Si2O7 and Ca2SiO4, phases did not possess catalytic activity.
PB  - Elsevier
T2  - Advanced Powder Technology
T1  - Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil
SP  - 1141
EP  - 1150
VL  - 30
IS  - 6
DO  - 10.1016/j.apt.2019.03.009
ER  - 
@article{
author = "Zdujić, Miodrag and Lukić, Ivana and Kesić, Željka and Janković-Častvan, Ivona and Marković, Smilja and Jovalekić, Čedomir and Skala, Dejan",
year = "2019",
url = "http://www.sciencedirect.com/science/article/pii/S0921883119300615, http://dais.sanu.ac.rs/123456789/5142",
abstract = "The powder mixtures of calcium oxide (CaO) and silica gel (SiO2) in molar ratios of 1:1, 1.5:1, 2:1 and 3:1 were mechanochemically treated with the addition of water, and were subsequently calcined with a goal of synthesizing CaSiO3, Ca3Si2O7, Ca2SiO4 compounds and CaO/Ca2SiO4 two-phase mixture. The prepared materials were characterized by XRD, FTIR, SEM/EDS, particle size laser diffraction (PSLD), UV–vis diffuse reflectance spectroscopy (DRS), N2 adsorption/desorption isotherms, Hammett indicator for basic strength and volumetric analysis for free CaO content. The catalytic activity of calcium silicates with different Ca/Si ratios was tested in the transesterification of triacylglycerols (sunflower oil) with methanol. Samples obtained with initial composition 2CaO·SiO2 and 3CaO·SiO2 calcined at 700 °C, and 3CaO·SiO2 calcined at 900 °C had high catalytic activity, resulting with triacylglycerols conversion and fatty acids methyl ester formation (FAME or biodiesel) above 96%. The activity of these samples can be attributed to the existence of free CaO defined by CaO/Ca2SiO4 complex mixture. The effect of different amount of catalyst used for transesterification (0.2–2 wt%) was analyzed using the most active catalyst i.e. 3CaO·SiO2 calcined at 700 °C as well as possibility of its reuse for biodiesel synthesis. It was also found that CaSiO3, Ca3Si2O7 and Ca2SiO4, phases did not possess catalytic activity.",
publisher = "Elsevier",
journal = "Advanced Powder Technology",
title = "Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil",
pages = "1141-1150",
volume = "30",
number = "6",
doi = "10.1016/j.apt.2019.03.009"
}
Zdujić, M., Lukić, I., Kesić, Ž., Janković-Častvan, I., Marković, S., Jovalekić, Č.,& Skala, D. (2019). Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil.
Advanced Powder Technology
Elsevier., 30(6), 1141-1150.
https://doi.org/10.1016/j.apt.2019.03.009
Zdujić M, Lukić I, Kesić Ž, Janković-Častvan I, Marković S, Jovalekić Č, Skala D. Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil. Advanced Powder Technology. 2019;30(6):1141-1150
Zdujić Miodrag, Lukić Ivana, Kesić Željka, Janković-Častvan Ivona, Marković Smilja, Jovalekić Čedomir, Skala Dejan, "Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil" Advanced Powder Technology, 30, no. 6 (2019):1141-1150,
https://doi.org/10.1016/j.apt.2019.03.009 .
8
7
9

Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil

Zdujić, Miodrag; Lukić, Ivana; Kesić, Željka; Janković-Častvan, Ivona; Marković, Smilja; Jovalekić, Čedomir; Skala, Dejan

(Elsevier, 2019)

TY  - JOUR
AU  - Zdujić, Miodrag
AU  - Lukić, Ivana
AU  - Kesić, Željka
AU  - Janković-Častvan, Ivona
AU  - Marković, Smilja
AU  - Jovalekić, Čedomir
AU  - Skala, Dejan
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0921883119300615
UR  - http://dais.sanu.ac.rs/123456789/5802
AB  - The powder mixtures of calcium oxide (CaO) and silica gel (SiO2) in molar ratios of 1:1, 1.5:1, 2:1 and 3:1 were mechanochemically treated with the addition of water, and were subsequently calcined with a goal of synthesizing CaSiO3, Ca3Si2O7, Ca2SiO4 compounds and CaO/Ca2SiO4 two-phase mixture. The prepared materials were characterized by XRD, FTIR, SEM/EDS, particle size laser diffraction (PSLD), UV–vis diffuse reflectance spectroscopy (DRS), N2 adsorption/desorption isotherms, Hammett indicator for basic strength and volumetric analysis for free CaO content. The catalytic activity of calcium silicates with different Ca/Si ratios was tested in the transesterification of triacylglycerols (sunflower oil) with methanol. Samples obtained with initial composition 2CaO·SiO2 and 3CaO·SiO2 calcined at 700 °C, and 3CaO·SiO2 calcined at 900 °C had high catalytic activity, resulting with triacylglycerols conversion and fatty acids methyl ester formation (FAME or biodiesel) above 96%. The activity of these samples can be attributed to the existence of free CaO defined by CaO/Ca2SiO4 complex mixture. The effect of different amount of catalyst used for transesterification (0.2–2 wt%) was analyzed using the most active catalyst i.e. 3CaO·SiO2 calcined at 700 °C as well as possibility of its reuse for biodiesel synthesis. It was also found that CaSiO3, Ca3Si2O7 and Ca2SiO4, phases did not possess catalytic activity.
PB  - Elsevier
T2  - Advanced Powder Technology
T1  - Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil
SP  - 1141
EP  - 1150
VL  - 30
IS  - 6
DO  - 10.1016/j.apt.2019.03.009
ER  - 
@article{
author = "Zdujić, Miodrag and Lukić, Ivana and Kesić, Željka and Janković-Častvan, Ivona and Marković, Smilja and Jovalekić, Čedomir and Skala, Dejan",
year = "2019",
url = "http://www.sciencedirect.com/science/article/pii/S0921883119300615, http://dais.sanu.ac.rs/123456789/5802",
abstract = "The powder mixtures of calcium oxide (CaO) and silica gel (SiO2) in molar ratios of 1:1, 1.5:1, 2:1 and 3:1 were mechanochemically treated with the addition of water, and were subsequently calcined with a goal of synthesizing CaSiO3, Ca3Si2O7, Ca2SiO4 compounds and CaO/Ca2SiO4 two-phase mixture. The prepared materials were characterized by XRD, FTIR, SEM/EDS, particle size laser diffraction (PSLD), UV–vis diffuse reflectance spectroscopy (DRS), N2 adsorption/desorption isotherms, Hammett indicator for basic strength and volumetric analysis for free CaO content. The catalytic activity of calcium silicates with different Ca/Si ratios was tested in the transesterification of triacylglycerols (sunflower oil) with methanol. Samples obtained with initial composition 2CaO·SiO2 and 3CaO·SiO2 calcined at 700 °C, and 3CaO·SiO2 calcined at 900 °C had high catalytic activity, resulting with triacylglycerols conversion and fatty acids methyl ester formation (FAME or biodiesel) above 96%. The activity of these samples can be attributed to the existence of free CaO defined by CaO/Ca2SiO4 complex mixture. The effect of different amount of catalyst used for transesterification (0.2–2 wt%) was analyzed using the most active catalyst i.e. 3CaO·SiO2 calcined at 700 °C as well as possibility of its reuse for biodiesel synthesis. It was also found that CaSiO3, Ca3Si2O7 and Ca2SiO4, phases did not possess catalytic activity.",
publisher = "Elsevier",
journal = "Advanced Powder Technology",
title = "Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil",
pages = "1141-1150",
volume = "30",
number = "6",
doi = "10.1016/j.apt.2019.03.009"
}
Zdujić, M., Lukić, I., Kesić, Ž., Janković-Častvan, I., Marković, S., Jovalekić, Č.,& Skala, D. (2019). Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil.
Advanced Powder Technology
Elsevier., 30(6), 1141-1150.
https://doi.org/10.1016/j.apt.2019.03.009
Zdujić M, Lukić I, Kesić Ž, Janković-Častvan I, Marković S, Jovalekić Č, Skala D. Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil. Advanced Powder Technology. 2019;30(6):1141-1150
Zdujić Miodrag, Lukić Ivana, Kesić Željka, Janković-Častvan Ivona, Marković Smilja, Jovalekić Čedomir, Skala Dejan, "Synthesis of CaOSiO2 compounds and their testing as heterogeneous catalysts for transesterification of sunflower oil" Advanced Powder Technology, 30, no. 6 (2019):1141-1150,
https://doi.org/10.1016/j.apt.2019.03.009 .
8
7
9

Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag

Nikolić, Irena; Marković, Smilja; Veselinović, Ljiljana; Radmilović, Vuk V.; Janković Častvan, Ivona; Radmilović, Velimir R.

(Elsevier, 2019)

TY  - JOUR
AU  - Nikolić, Irena
AU  - Marković, Smilja
AU  - Veselinović, Ljiljana
AU  - Radmilović, Vuk V.
AU  - Janković Častvan, Ivona
AU  - Radmilović, Velimir R.
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0167577X18315908
UR  - http://dais.sanu.ac.rs/123456789/4551
AB  - Pristine electric arc furnace slag (EAFS) as well as EAFS modified by alkali activation i.e. alkali activated slag (AAS) have found a novel application as adsorbents used in Cu2+ removal from sulfate solutions. The adsorption tests were carried in batch conditions and results have shown that alkali activation of EAFS enhances the Cu2+ adsorption. The adsorption process was found to follow a pseudo second-order kinetic model and occurs via formation of posnjakite (Cu4(SO4)(OH)6·H2O) on the surface of both, EAFS and AAS. Enhanced adsorption properties of AAS, compared to EAFS, are attributed to a more porous structure, larger specific surface area and an increased number of surface groups involved in the binding of Cu2+.
PB  - Elsevier
T2  - Materials Letters
T1  - Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag
SP  - 184
EP  - 188
VL  - 235
DO  - 10.1016/j.matlet.2018.10.027
ER  - 
@article{
author = "Nikolić, Irena and Marković, Smilja and Veselinović, Ljiljana and Radmilović, Vuk V. and Janković Častvan, Ivona and Radmilović, Velimir R.",
year = "2019",
url = "http://www.sciencedirect.com/science/article/pii/S0167577X18315908, http://dais.sanu.ac.rs/123456789/4551",
abstract = "Pristine electric arc furnace slag (EAFS) as well as EAFS modified by alkali activation i.e. alkali activated slag (AAS) have found a novel application as adsorbents used in Cu2+ removal from sulfate solutions. The adsorption tests were carried in batch conditions and results have shown that alkali activation of EAFS enhances the Cu2+ adsorption. The adsorption process was found to follow a pseudo second-order kinetic model and occurs via formation of posnjakite (Cu4(SO4)(OH)6·H2O) on the surface of both, EAFS and AAS. Enhanced adsorption properties of AAS, compared to EAFS, are attributed to a more porous structure, larger specific surface area and an increased number of surface groups involved in the binding of Cu2+.",
publisher = "Elsevier",
journal = "Materials Letters",
title = "Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag",
pages = "184-188",
volume = "235",
doi = "10.1016/j.matlet.2018.10.027"
}
Nikolić, I., Marković, S., Veselinović, L., Radmilović, V. V., Janković Častvan, I.,& Radmilović, V. R. (2019). Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag.
Materials Letters
Elsevier., 235, 184-188.
https://doi.org/10.1016/j.matlet.2018.10.027
Nikolić I, Marković S, Veselinović L, Radmilović VV, Janković Častvan I, Radmilović VR. Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag. Materials Letters. 2019;235:184-188
Nikolić Irena, Marković Smilja, Veselinović Ljiljana, Radmilović Vuk V., Janković Častvan Ivona, Radmilović Velimir R., "Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag" Materials Letters, 235 (2019):184-188,
https://doi.org/10.1016/j.matlet.2018.10.027 .
1
1

Synthesis, characterization and electrochemical properties of Na0.44MnO2 in NaNO3 and LiNO3 aqueous solution

Gezović, Aleksandra; Vujković, Milica; Jugović, Dragana; Janković Častvan, Ivona; Stojković Simatović, Ivana; Mentus, Slavko

(Belgrade : Society of Physical Chemists of Serbia, 2018)

TY  - CONF
AU  - Gezović, Aleksandra
AU  - Vujković, Milica
AU  - Jugović, Dragana
AU  - Janković Častvan, Ivona
AU  - Stojković Simatović, Ivana
AU  - Mentus, Slavko
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/4562
AB  - Na0.44MnO2 synthesized by glycine-nitrate method (GNM) was described in
this paper and it was characterized by X-ray powder diffraction (XRD) and
field-emission scanning electron microscopy (FE-SEM). Electrochemical
performances of Na0.44MnO2 were studied by cycling voltammetry (CV) at
various scan rates in NaNO3 and LiNO3 aqueous solutions in order to
compare the intercalation/deintercalation kinetics of Li+ and Na+ ions. The
initial discharge capacity was found to be 27.1 and 27.44 in the aqueous
solution of NaNO3 and LiNO3, respectively, and after 30 cycles its values
increased for 12% in both electrolytes.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - Physical Chemistry 2018 : proceedings. Vol. 1 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018
T1  - Synthesis, characterization and electrochemical properties of Na0.44MnO2 in NaNO3 and LiNO3 aqueous solution
SP  - 407
EP  - 410
ER  - 
@conference{
author = "Gezović, Aleksandra and Vujković, Milica and Jugović, Dragana and Janković Častvan, Ivona and Stojković Simatović, Ivana and Mentus, Slavko",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/4562",
abstract = "Na0.44MnO2 synthesized by glycine-nitrate method (GNM) was described in
this paper and it was characterized by X-ray powder diffraction (XRD) and
field-emission scanning electron microscopy (FE-SEM). Electrochemical
performances of Na0.44MnO2 were studied by cycling voltammetry (CV) at
various scan rates in NaNO3 and LiNO3 aqueous solutions in order to
compare the intercalation/deintercalation kinetics of Li+ and Na+ ions. The
initial discharge capacity was found to be 27.1 and 27.44 in the aqueous
solution of NaNO3 and LiNO3, respectively, and after 30 cycles its values
increased for 12% in both electrolytes.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "Physical Chemistry 2018 : proceedings. Vol. 1 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018",
title = "Synthesis, characterization and electrochemical properties of Na0.44MnO2 in NaNO3 and LiNO3 aqueous solution",
pages = "407-410"
}
Gezović, A., Vujković, M., Jugović, D., Janković Častvan, I., Stojković Simatović, I.,& Mentus, S. (2018). Synthesis, characterization and electrochemical properties of Na0.44MnO2 in NaNO3 and LiNO3 aqueous solution.
Physical Chemistry 2018 : proceedings. Vol. 1 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018
Belgrade : Society of Physical Chemists of Serbia., 407-410.
Gezović A, Vujković M, Jugović D, Janković Častvan I, Stojković Simatović I, Mentus S. Synthesis, characterization and electrochemical properties of Na0.44MnO2 in NaNO3 and LiNO3 aqueous solution. Physical Chemistry 2018 : proceedings. Vol. 1 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018. 2018;:407-410
Gezović Aleksandra, Vujković Milica, Jugović Dragana, Janković Častvan Ivona, Stojković Simatović Ivana, Mentus Slavko, "Synthesis, characterization and electrochemical properties of Na0.44MnO2 in NaNO3 and LiNO3 aqueous solution" Physical Chemistry 2018 : proceedings. Vol. 1 / 14th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2018 (2018):407-410

Na0.44Mn02 as a cathode material for aqueous sodium-ion batteries

Gezović, Aleksandra; Vujković, Milica; Jugović, Dragana; Janković Častvan, Ivona; Stojković Simatović, Ivana

(Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade, 2018)

TY  - CONF
AU  - Gezović, Aleksandra
AU  - Vujković, Milica
AU  - Jugović, Dragana
AU  - Janković Častvan, Ivona
AU  - Stojković Simatović, Ivana
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/4570
AB  - The application of rechargeable batteries is growing significantly and it became the nlost important field for largescale electric energy storage. While lithiuln-ion batteries (LIBs) have great commercial success, due to their large energy and power density, their application was limited because of the availability of lithiunl and its high cost. Sodiunl-ion batteries (SIBs) can be a promissing alternative due to the huge availability of sodium, its low price and similar intercalating electrochelnistry to LIBs. Among various Na-ion battery materials, low-cost and tunnel-type, Na0.44Mn02 (NMO) was regarded as one of the most pronlising cathode materials for sodium-ion batteries, because of its high theoretical specific capacity (122 rnA h g1) and good cyclability [2]. In this work, for the synthesis of NMO powder, rapid glycine-nitrate nlethod (GNM) was used, which, on the basis of the literature review, has not been used to synthesize this material so far.
PB  - Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade
PB  - Belgrade : Hydrogen Economy Initiative Serbia
C3  - Program and the Book of Abstracts / 3rd International Symposium on Materials for Energy Storage and Conversion - mESC-IS 2018
T1  - Na0.44Mn02 as a cathode material for aqueous sodium-ion batteries
SP  - 89
EP  - 89
ER  - 
@conference{
author = "Gezović, Aleksandra and Vujković, Milica and Jugović, Dragana and Janković Častvan, Ivona and Stojković Simatović, Ivana",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/4570",
abstract = "The application of rechargeable batteries is growing significantly and it became the nlost important field for largescale electric energy storage. While lithiuln-ion batteries (LIBs) have great commercial success, due to their large energy and power density, their application was limited because of the availability of lithiunl and its high cost. Sodiunl-ion batteries (SIBs) can be a promissing alternative due to the huge availability of sodium, its low price and similar intercalating electrochelnistry to LIBs. Among various Na-ion battery materials, low-cost and tunnel-type, Na0.44Mn02 (NMO) was regarded as one of the most pronlising cathode materials for sodium-ion batteries, because of its high theoretical specific capacity (122 rnA h g1) and good cyclability [2]. In this work, for the synthesis of NMO powder, rapid glycine-nitrate nlethod (GNM) was used, which, on the basis of the literature review, has not been used to synthesize this material so far.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade, Belgrade : Hydrogen Economy Initiative Serbia",
journal = "Program and the Book of Abstracts / 3rd International Symposium on Materials for Energy Storage and Conversion - mESC-IS 2018",
title = "Na0.44Mn02 as a cathode material for aqueous sodium-ion batteries",
pages = "89-89"
}
Gezović, A., Vujković, M., Jugović, D., Janković Častvan, I.,& Stojković Simatović, I. (2018). Na0.44Mn02 as a cathode material for aqueous sodium-ion batteries.
Program and the Book of Abstracts / 3rd International Symposium on Materials for Energy Storage and Conversion - mESC-IS 2018
Belgrade : Hydrogen Economy Initiative Serbia., 89-89.
Gezović A, Vujković M, Jugović D, Janković Častvan I, Stojković Simatović I. Na0.44Mn02 as a cathode material for aqueous sodium-ion batteries. Program and the Book of Abstracts / 3rd International Symposium on Materials for Energy Storage and Conversion - mESC-IS 2018. 2018;:89-89
Gezović Aleksandra, Vujković Milica, Jugović Dragana, Janković Častvan Ivona, Stojković Simatović Ivana, "Na0.44Mn02 as a cathode material for aqueous sodium-ion batteries" Program and the Book of Abstracts / 3rd International Symposium on Materials for Energy Storage and Conversion - mESC-IS 2018 (2018):89-89

Synthesis and characterisation of ZnO synthesized by glycine-nitrate combustion process

Dojčinović, Milena; Marković, Smilja; Stojadinović, S.; Rac, Vladislav; Janković Častvan, Ivona; Stojković Simatović, Ivana

(Belgrade : Institute of Technical Sciences of SASA, 2018)

TY  - CONF
AU  - Dojčinović, Milena
AU  - Marković, Smilja
AU  - Stojadinović, S.
AU  - Rac, Vladislav
AU  - Janković Častvan, Ivona
AU  - Stojković Simatović, Ivana
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/4717
AB  - One of the ways to get rid of toxic organic compounds that industries release into natural waters is photocatalysis of the decomposition of organic compounds on the surface of heterogenous photocatalysts such as zinc oxide. Zinc oxide is a semiconductor that interacts with UV and near-UV visible light by generating electron-hole pairs which decompose organic molecules. Therefore it is useful to explore different ways of synthesizing zinc oxide and to test quality and quantity of organic decomposition photocatalysis so as to enable the commercial use of the material. Zinc oxide is also a respectable material for use as a photoelectrocatalyst in water oxidation, for example, which can be useful for generating oxygen while using natural sunlight - a clean and abundant energy source. In this project nanocrystalline zinc oxide was synthesized by glycin-nitrate combustion process and the powder was annealed on temperatures of 400 °C and 500 °C. Obtained particles where characterized in detail using X-ray powder diffraction (XRPD), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, field emission scanning microscopy (FESEM), photoluminescence spectroscopy (PL) and diffuse reflectance spectroscopy (DRS). The results show that obtained samples are nanocrystalline wurtzite zinc oxide, with particle diameters of 33 nm (annealed at 400 °C) ad 48 nm (annealed at 500 °C). Both samples show significant amount of various crystal defects. Zinc oxide band gap of the samples are determined to be lower than the band gap of the bulk zinc oxide. Photoelectrocatalytic properties were investigated via electrochemical methods: linear voltammetry (LV), chronoamperometry (CA) and impedance spectroscopy (EIS). The results show that material is photostable and reactive to the light. Water oxidation is enhanced by exposing to sunlight. Finally, photocatalytic properties are tested with determining kinetic parameters of phenole and methyl blue decomposition. Zinc oxide nanoparticles are efficient photocatalysts, although sample annealed at 500 °C shows better properties than sample annealed at 400 °C.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia
T1  - Synthesis and characterisation of ZnO synthesized by glycine-nitrate combustion process
SP  - 78
EP  - 78
ER  - 
@conference{
author = "Dojčinović, Milena and Marković, Smilja and Stojadinović, S. and Rac, Vladislav and Janković Častvan, Ivona and Stojković Simatović, Ivana",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/4717",
abstract = "One of the ways to get rid of toxic organic compounds that industries release into natural waters is photocatalysis of the decomposition of organic compounds on the surface of heterogenous photocatalysts such as zinc oxide. Zinc oxide is a semiconductor that interacts with UV and near-UV visible light by generating electron-hole pairs which decompose organic molecules. Therefore it is useful to explore different ways of synthesizing zinc oxide and to test quality and quantity of organic decomposition photocatalysis so as to enable the commercial use of the material. Zinc oxide is also a respectable material for use as a photoelectrocatalyst in water oxidation, for example, which can be useful for generating oxygen while using natural sunlight - a clean and abundant energy source. In this project nanocrystalline zinc oxide was synthesized by glycin-nitrate combustion process and the powder was annealed on temperatures of 400 °C and 500 °C. Obtained particles where characterized in detail using X-ray powder diffraction (XRPD), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, field emission scanning microscopy (FESEM), photoluminescence spectroscopy (PL) and diffuse reflectance spectroscopy (DRS). The results show that obtained samples are nanocrystalline wurtzite zinc oxide, with particle diameters of 33 nm (annealed at 400 °C) ad 48 nm (annealed at 500 °C). Both samples show significant amount of various crystal defects. Zinc oxide band gap of the samples are determined to be lower than the band gap of the bulk zinc oxide. Photoelectrocatalytic properties were investigated via electrochemical methods: linear voltammetry (LV), chronoamperometry (CA) and impedance spectroscopy (EIS). The results show that material is photostable and reactive to the light. Water oxidation is enhanced by exposing to sunlight. Finally, photocatalytic properties are tested with determining kinetic parameters of phenole and methyl blue decomposition. Zinc oxide nanoparticles are efficient photocatalysts, although sample annealed at 500 °C shows better properties than sample annealed at 400 °C.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia",
title = "Synthesis and characterisation of ZnO synthesized by glycine-nitrate combustion process",
pages = "78-78"
}
Dojčinović, M., Marković, S., Stojadinović, S., Rac, V., Janković Častvan, I.,& Stojković Simatović, I. (2018). Synthesis and characterisation of ZnO synthesized by glycine-nitrate combustion process.
Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 78-78.
Dojčinović M, Marković S, Stojadinović S, Rac V, Janković Častvan I, Stojković Simatović I. Synthesis and characterisation of ZnO synthesized by glycine-nitrate combustion process. Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia. 2018;:78-78
Dojčinović Milena, Marković Smilja, Stojadinović S., Rac Vladislav, Janković Častvan Ivona, Stojković Simatović Ivana, "Synthesis and characterisation of ZnO synthesized by glycine-nitrate combustion process" Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia (2018):78-78

Alkali Activated Slag as Adsorbents for Cu2+ Removal from Wastewaters

Nikolić, Irena; Đurović, Dijana; Milašević, Ivana; Marković, Smilja; Veselinović, Ljiljana; Radmilović, Vuk V.; Janković Častvan, Ivona; Radmilović, Velimir R.

(Belgrade : Serbian Academy of Sciences and Arts, 2018)

TY  - CONF
AU  - Nikolić, Irena
AU  - Đurović, Dijana
AU  - Milašević, Ivana
AU  - Marković, Smilja
AU  - Veselinović, Ljiljana
AU  - Radmilović, Vuk V.
AU  - Janković Častvan, Ivona
AU  - Radmilović, Velimir R.
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/3629
AB  - The removal of heavy metals from wastewaters is presently a global imperative primarily due to their well-known toxic nature and detrimental effects on the environment, and more importantly, on human health. Currently, special attention is paid to the use of novel slag based materials – alkali activated slag (AAS) as potential novel adsorbents. Our previous studies have shown that electric arc furnace slag (EAFS) can be successfully used as a precursor for the production of AAS. Generally, alkaline activation involves a chemical reaction between solid aluminosilicate materials and a highly alkaline activator. The alkali activation mechanism of slag involves the dissolution of slag in a highly alkaline, which is followed by the condensation and hardening processes. Dependent on the pH and type of alkaline activator, calcium (alumina) silicate hydrate or C–(A)–S–H gel has been identified as a reaction product of slag alkali activation. The objective of this research was to investigate the removal of Cu2+ from aquatic solution using alkali activated slag (AAS) obtained by alkaline activation of EAFS.
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  - Alkali Activated Slag as Adsorbents for Cu2+ Removal from Wastewaters
SP  - 198
EP  - 200
ER  - 
@conference{
author = "Nikolić, Irena and Đurović, Dijana and Milašević, Ivana and Marković, Smilja and Veselinović, Ljiljana and Radmilović, Vuk V. and Janković Častvan, Ivona and Radmilović, Velimir R.",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/3629",
abstract = "The removal of heavy metals from wastewaters is presently a global imperative primarily due to their well-known toxic nature and detrimental effects on the environment, and more importantly, on human health. Currently, special attention is paid to the use of novel slag based materials – alkali activated slag (AAS) as potential novel adsorbents. Our previous studies have shown that electric arc furnace slag (EAFS) can be successfully used as a precursor for the production of AAS. Generally, alkaline activation involves a chemical reaction between solid aluminosilicate materials and a highly alkaline activator. The alkali activation mechanism of slag involves the dissolution of slag in a highly alkaline, which is followed by the condensation and hardening processes. Dependent on the pH and type of alkaline activator, calcium (alumina) silicate hydrate or C–(A)–S–H gel has been identified as a reaction product of slag alkali activation. The objective of this research was to investigate the removal of Cu2+ from aquatic solution using alkali activated slag (AAS) obtained by alkaline activation of EAFS.",
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 = "Alkali Activated Slag as Adsorbents for Cu2+ Removal from Wastewaters",
pages = "198-200"
}
Nikolić, I., Đurović, D., Milašević, I., Marković, S., Veselinović, L., Radmilović, V. V., Janković Častvan, I.,& Radmilović, V. R. (2018). Alkali Activated Slag as Adsorbents for Cu2+ Removal from Wastewaters.
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., 198-200.
Nikolić I, Đurović D, Milašević I, Marković S, Veselinović L, Radmilović VV, Janković Častvan I, Radmilović VR. Alkali Activated Slag as Adsorbents for Cu2+ Removal from Wastewaters. Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia. 2018;:198-200
Nikolić Irena, Đurović Dijana, Milašević Ivana, Marković Smilja, Veselinović Ljiljana, Radmilović Vuk V., Janković Častvan Ivona, Radmilović Velimir R., "Alkali Activated Slag as Adsorbents for Cu2+ Removal from Wastewaters" Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia (2018):198-200

Simultaneous enhancement of natural sunlight- and artificial UV-driven photocatalytic activity of a mechanically activated ZnO/SnO2 composite

Marković, Smilja; Stanković, Ana; Dostanić, Jasmina; Veselinović, Ljiljana; Mančić, Lidija; Škapin, Srečo Davor; Dražić, Goran; Janković Častvan, Ivona; Uskoković, Dragan

(Royal Society of Chemistry, 2017)

TY  - JOUR
AU  - Marković, Smilja
AU  - Stanković, Ana
AU  - Dostanić, Jasmina
AU  - Veselinović, Ljiljana
AU  - Mančić, Lidija
AU  - Škapin, Srečo Davor
AU  - Dražić, Goran
AU  - Janković Častvan, Ivona
AU  - Uskoković, Dragan
PY  - 2017
UR  - http://dais.sanu.ac.rs/123456789/2346
AB  - Mechanical milling of commercial ZnO and SnO2 was used to produce a ZnO/SnO2 composite with a high density of surface defects; in particular, zinc interstitials (Zni) and oxygen vacancies (VO). To determine the impact of surface defects on photocatalytic activity, the relative concentration ratio of bulk defects to surface defects was modified by annealing at 400 and 700 °C. The possible application of the ZnO/SnO2 composite as a natural sunlight and UV-light driven photocatalyst was revealed via de-colorization of methylene blue. In both cases the ZnO/SnO2 composite exhibited enhanced photocatalytic activity as compared to the pristine ZnO. In order to investigate the origin of the enhancement, the pristine metal oxides and composites were characterized using a variety of techniques, including X-ray diffraction (XRD), Raman and Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM), laser diffraction particle size analysis, Brunauer–Emmett–Teller, UV-Vis diffuse reflectance and photoluminescence spectroscopy. High-resolution transmission electron microscopy (HRTEM) and elemental mapping analyses were used to reveal the presence of SnO2 nanocrystallites on the surface of larger ZnO particles. The enhanced photocatalytic activity of the composite can be attributed to the synergetic effect of the surface defects and the ZnO/SnO2 heterojunction particles, which facilitated charge separation, thereby hindering the recombination of photogenerated carriers. This study draws attention to mechanical activation as an inexpensive and environmentally friendly technique for the large-scale production of the composite with an enhanced photocatalytic activity under illumination of either UV or sunlight.
PB  - Royal Society of Chemistry
T2  - RSC Advances
T1  - Simultaneous enhancement of natural sunlight- and artificial UV-driven photocatalytic activity of a mechanically activated ZnO/SnO2 composite
SP  - 42725
EP  - 42737
VL  - 7
DO  - 10.1039/C7RA06895F
ER  - 
@article{
author = "Marković, Smilja and Stanković, Ana and Dostanić, Jasmina and Veselinović, Ljiljana and Mančić, Lidija and Škapin, Srečo Davor and Dražić, Goran and Janković Častvan, Ivona and Uskoković, Dragan",
year = "2017",
url = "http://dais.sanu.ac.rs/123456789/2346",
abstract = "Mechanical milling of commercial ZnO and SnO2 was used to produce a ZnO/SnO2 composite with a high density of surface defects; in particular, zinc interstitials (Zni) and oxygen vacancies (VO). To determine the impact of surface defects on photocatalytic activity, the relative concentration ratio of bulk defects to surface defects was modified by annealing at 400 and 700 °C. The possible application of the ZnO/SnO2 composite as a natural sunlight and UV-light driven photocatalyst was revealed via de-colorization of methylene blue. In both cases the ZnO/SnO2 composite exhibited enhanced photocatalytic activity as compared to the pristine ZnO. In order to investigate the origin of the enhancement, the pristine metal oxides and composites were characterized using a variety of techniques, including X-ray diffraction (XRD), Raman and Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM), laser diffraction particle size analysis, Brunauer–Emmett–Teller, UV-Vis diffuse reflectance and photoluminescence spectroscopy. High-resolution transmission electron microscopy (HRTEM) and elemental mapping analyses were used to reveal the presence of SnO2 nanocrystallites on the surface of larger ZnO particles. The enhanced photocatalytic activity of the composite can be attributed to the synergetic effect of the surface defects and the ZnO/SnO2 heterojunction particles, which facilitated charge separation, thereby hindering the recombination of photogenerated carriers. This study draws attention to mechanical activation as an inexpensive and environmentally friendly technique for the large-scale production of the composite with an enhanced photocatalytic activity under illumination of either UV or sunlight.",
publisher = "Royal Society of Chemistry",
journal = "RSC Advances",
title = "Simultaneous enhancement of natural sunlight- and artificial UV-driven photocatalytic activity of a mechanically activated ZnO/SnO2 composite",
pages = "42725-42737",
volume = "7",
doi = "10.1039/C7RA06895F"
}
Marković, S., Stanković, A., Dostanić, J., Veselinović, L., Mančić, L., Škapin, S. D., Dražić, G., Janković Častvan, I.,& Uskoković, D. (2017). Simultaneous enhancement of natural sunlight- and artificial UV-driven photocatalytic activity of a mechanically activated ZnO/SnO2 composite.
RSC Advances
Royal Society of Chemistry., 7, 42725-42737.
https://doi.org/10.1039/C7RA06895F
Marković S, Stanković A, Dostanić J, Veselinović L, Mančić L, Škapin SD, Dražić G, Janković Častvan I, Uskoković D. Simultaneous enhancement of natural sunlight- and artificial UV-driven photocatalytic activity of a mechanically activated ZnO/SnO2 composite. RSC Advances. 2017;7:42725-42737
Marković Smilja, Stanković Ana, Dostanić Jasmina, Veselinović Ljiljana, Mančić Lidija, Škapin Srečo Davor, Dražić Goran, Janković Častvan Ivona, Uskoković Dragan, "Simultaneous enhancement of natural sunlight- and artificial UV-driven photocatalytic activity of a mechanically activated ZnO/SnO2 composite" RSC Advances, 7 (2017):42725-42737,
https://doi.org/10.1039/C7RA06895F .
15
14
15

Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag

Nikolić, Irena; Marković, Smilja; Janković Častvan, Ivona; Radmilović, Vuk V.; Karanović, Ljiljana; Babić, Biljana M.; Radmilović, Velimir R.

(Elsevier, 2016)

TY  - JOUR
AU  - Nikolić, Irena
AU  - Marković, Smilja
AU  - Janković Častvan, Ivona
AU  - Radmilović, Vuk V.
AU  - Karanović, Ljiljana
AU  - Babić, Biljana M.
AU  - Radmilović, Velimir R.
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/4639
AB  - Geopolymeric binders (GB) were produced using fly ash (FA) and electric arc furnace slag (EAFS). The slag has been added in the range of 0–40%. The effects of slag content on the strength, microstructure and thermal resistance were evaluated. It was found that the amount of EAFS up to 30% positively affects the strength evolution of GB. The main reaction product of FA/EAFS blends was amorphous N–(C)–A–S–H gel along with geopolymer-type gel (N–A–S–H). Thermal resistance of GB was considered from the standpoint of their mechanical and dimensional stability after heating in the temperature interval of 600–800 °C. The changes in mechanical and thermal properties of GB after heating are attributed to the changes in their structure. The results have shown that EAFS negatively affects the thermal resistance of GB above 600 °C due to the phase transition and morphological transformation of the amorphous gel phase.
PB  - Elsevier
T2  - Materials Letters
T1  - Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag
SP  - 301
EP  - 305
VL  - 176
DO  - 10.1016/j.matlet.2016.04.121
ER  - 
@article{
author = "Nikolić, Irena and Marković, Smilja and Janković Častvan, Ivona and Radmilović, Vuk V. and Karanović, Ljiljana and Babić, Biljana M. and Radmilović, Velimir R.",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/4639",
abstract = "Geopolymeric binders (GB) were produced using fly ash (FA) and electric arc furnace slag (EAFS). The slag has been added in the range of 0–40%. The effects of slag content on the strength, microstructure and thermal resistance were evaluated. It was found that the amount of EAFS up to 30% positively affects the strength evolution of GB. The main reaction product of FA/EAFS blends was amorphous N–(C)–A–S–H gel along with geopolymer-type gel (N–A–S–H). Thermal resistance of GB was considered from the standpoint of their mechanical and dimensional stability after heating in the temperature interval of 600–800 °C. The changes in mechanical and thermal properties of GB after heating are attributed to the changes in their structure. The results have shown that EAFS negatively affects the thermal resistance of GB above 600 °C due to the phase transition and morphological transformation of the amorphous gel phase.",
publisher = "Elsevier",
journal = "Materials Letters",
title = "Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag",
pages = "301-305",
volume = "176",
doi = "10.1016/j.matlet.2016.04.121"
}
Nikolić, I., Marković, S., Janković Častvan, I., Radmilović, V. V., Karanović, L., Babić, B. M.,& Radmilović, V. R. (2016). Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag.
Materials Letters
Elsevier., 176, 301-305.
https://doi.org/10.1016/j.matlet.2016.04.121
Nikolić I, Marković S, Janković Častvan I, Radmilović VV, Karanović L, Babić BM, Radmilović VR. Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag. Materials Letters. 2016;176:301-305
Nikolić Irena, Marković Smilja, Janković Častvan Ivona, Radmilović Vuk V., Karanović Ljiljana, Babić Biljana M., Radmilović Velimir R., "Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag" Materials Letters, 176 (2016):301-305,
https://doi.org/10.1016/j.matlet.2016.04.121 .
22
18
22

Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag

Nikolić, Irena; Marković, Smilja; Janković Častvan, Ivona; Radmilović, Vuk V.; Karanović, Ljiljana; Babić, Biljana M.; Radmilović, Velimir R.

(Elsevier, 2016)

TY  - JOUR
AU  - Nikolić, Irena
AU  - Marković, Smilja
AU  - Janković Častvan, Ivona
AU  - Radmilović, Vuk V.
AU  - Karanović, Ljiljana
AU  - Babić, Biljana M.
AU  - Radmilović, Velimir R.
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/15992
AB  - Geopolymeric binders (GB) were produced using fly ash (FA) and electric arc furnace slag (EAFS). The slag has been added in the range of 0–40%. The effects of slag content on the strength, microstructure and thermal resistance were evaluated. It was found that the amount of EAFS up to 30% positively affects the strength evolution of GB. The main reaction product of FA/EAFS blends was amorphous N–(C)–A–S–H gel along with geopolymer-type gel (N–A–S–H). Thermal resistance of GB was considered from the standpoint of their mechanical and dimensional stability after heating in the temperature interval of 600–800 °C. The changes in mechanical and thermal properties of GB after heating are attributed to the changes in their structure. The results have shown that EAFS negatively affects the thermal resistance of GB above 600 °C due to the phase transition and morphological transformation of the amorphous gel phase.
PB  - Elsevier
T2  - Materials Letters
T1  - Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag
SP  - 301
EP  - 305
VL  - 176
DO  - 10.1016/j.matlet.2016.04.121
ER  - 
@article{
author = "Nikolić, Irena and Marković, Smilja and Janković Častvan, Ivona and Radmilović, Vuk V. and Karanović, Ljiljana and Babić, Biljana M. and Radmilović, Velimir R.",
year = "2016",
url = "http://dais.sanu.ac.rs/123456789/15992",
abstract = "Geopolymeric binders (GB) were produced using fly ash (FA) and electric arc furnace slag (EAFS). The slag has been added in the range of 0–40%. The effects of slag content on the strength, microstructure and thermal resistance were evaluated. It was found that the amount of EAFS up to 30% positively affects the strength evolution of GB. The main reaction product of FA/EAFS blends was amorphous N–(C)–A–S–H gel along with geopolymer-type gel (N–A–S–H). Thermal resistance of GB was considered from the standpoint of their mechanical and dimensional stability after heating in the temperature interval of 600–800 °C. The changes in mechanical and thermal properties of GB after heating are attributed to the changes in their structure. The results have shown that EAFS negatively affects the thermal resistance of GB above 600 °C due to the phase transition and morphological transformation of the amorphous gel phase.",
publisher = "Elsevier",
journal = "Materials Letters",
title = "Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag",
pages = "301-305",
volume = "176",
doi = "10.1016/j.matlet.2016.04.121"
}
Nikolić, I., Marković, S., Janković Častvan, I., Radmilović, V. V., Karanović, L., Babić, B. M.,& Radmilović, V. R. (2016). Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag.
Materials Letters
Elsevier., 176, 301-305.
https://doi.org/10.1016/j.matlet.2016.04.121
Nikolić I, Marković S, Janković Častvan I, Radmilović VV, Karanović L, Babić BM, Radmilović VR. Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag. Materials Letters. 2016;176:301-305
Nikolić Irena, Marković Smilja, Janković Častvan Ivona, Radmilović Vuk V., Karanović Ljiljana, Babić Biljana M., Radmilović Velimir R., "Modification of mechanical and thermal properties of fly ash-based geopolymer by the incorporation of steel slag" Materials Letters, 176 (2016):301-305,
https://doi.org/10.1016/j.matlet.2016.04.121 .
22
18
22

Influence of Point Defects Concentration on Densification Process and Optical Properties of Sintered ZnO Ceramics

Marković, Smilja; Stanković, Ana; Veselinović, Ljiljana; Belošević Čavor, Jelena; Škapin, Srečo Davor; Stojadinović, Stevan; Rac, Vladislav; Lević, Steva; Janković Častvan, Ivona; Uskoković, Dragan

(Belgrade : Materials Research Society of Serbia, 2015)

TY  - CONF
AU  - Marković, Smilja
AU  - Stanković, Ana
AU  - Veselinović, Ljiljana
AU  - Belošević Čavor, Jelena
AU  - Škapin, Srečo Davor
AU  - Stojadinović, Stevan
AU  - Rac, Vladislav
AU  - Lević, Steva
AU  - Janković Častvan, Ivona
AU  - Uskoković, Dragan
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/831
AB  - Zinc oxide is one of the most studied materials due to its potential applications in electronics, optoelectronics and spintronics. In the forms of single crystal and thin-film ZnO could be used as UV and blue light emitter, while sintered ZnO-based ceramics are important as varistors, thermistors or wide-band gap semiconductors. Intrinsic defects, such as vacancies, interstitials and antisites, in the crystal structure of a ZnO strongly influenced its electrical and optical properties. Thus, understanding the behavior of intrinsic defects during densification of ZnO ceramics as well as correlation of the defects with band gap energy of final product is important to its application in opto-electronic devices.
In this study, the influence of point defects concentration on the densification process and optical properties of ZnO sintered ceramics was investigated. To obtain ZnO sintered ceramics with variety of point defects concentration we employed two starting powders with a different crystal structure ordering, as well different morphology and specific surface area. Sinterability of the powders was investigated by thermo mechanical analyzer; shrinkage data, collected in axial (h) direction during non-isothermal sintering with heating rates of 5, 10 and 20 °/min, were used to calculate activation energy of sintering process. Sintering of uniaxially pressed (P = 100 MPa) cylindrical compacts (ø 6 mm and h ≈ 3 mm) were done in air atmosphere by heating rate of 10 °/min up to 1100 and 1200 °C, and dwell time of 2 h. To study a crystal structure of the sintered samples XRD and Raman spectroscopy were used, for microstructural investigation field emission scanning electron micrographs were recorded while optical properties were determined by UV-Vis diffuse reflectance and photoluminescence spectroscopy. A detailed study shows that point defect strongly influenced densification process as well optical properties. Sintered ZnO ceramic with a high crystal defect concentration and nanosized grains shows band gap energy of about 2 eV while band gap energy increased with a decrease of defect concentration.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Seventeenth Annual Conference YUCOMAT 205, Herceg Novi, August 31– September 4, 2015
T1  - Influence of Point Defects Concentration on Densification Process and Optical Properties of Sintered ZnO Ceramics
SP  - 61
EP  - 61
ER  - 
@conference{
author = "Marković, Smilja and Stanković, Ana and Veselinović, Ljiljana and Belošević Čavor, Jelena and Škapin, Srečo Davor and Stojadinović, Stevan and Rac, Vladislav and Lević, Steva and Janković Častvan, Ivona and Uskoković, Dragan",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/831",
abstract = "Zinc oxide is one of the most studied materials due to its potential applications in electronics, optoelectronics and spintronics. In the forms of single crystal and thin-film ZnO could be used as UV and blue light emitter, while sintered ZnO-based ceramics are important as varistors, thermistors or wide-band gap semiconductors. Intrinsic defects, such as vacancies, interstitials and antisites, in the crystal structure of a ZnO strongly influenced its electrical and optical properties. Thus, understanding the behavior of intrinsic defects during densification of ZnO ceramics as well as correlation of the defects with band gap energy of final product is important to its application in opto-electronic devices.
In this study, the influence of point defects concentration on the densification process and optical properties of ZnO sintered ceramics was investigated. To obtain ZnO sintered ceramics with variety of point defects concentration we employed two starting powders with a different crystal structure ordering, as well different morphology and specific surface area. Sinterability of the powders was investigated by thermo mechanical analyzer; shrinkage data, collected in axial (h) direction during non-isothermal sintering with heating rates of 5, 10 and 20 °/min, were used to calculate activation energy of sintering process. Sintering of uniaxially pressed (P = 100 MPa) cylindrical compacts (ø 6 mm and h ≈ 3 mm) were done in air atmosphere by heating rate of 10 °/min up to 1100 and 1200 °C, and dwell time of 2 h. To study a crystal structure of the sintered samples XRD and Raman spectroscopy were used, for microstructural investigation field emission scanning electron micrographs were recorded while optical properties were determined by UV-Vis diffuse reflectance and photoluminescence spectroscopy. A detailed study shows that point defect strongly influenced densification process as well optical properties. Sintered ZnO ceramic with a high crystal defect concentration and nanosized grains shows band gap energy of about 2 eV while band gap energy increased with a decrease of defect concentration.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Seventeenth Annual Conference YUCOMAT 205, Herceg Novi, August 31– September 4, 2015",
title = "Influence of Point Defects Concentration on Densification Process and Optical Properties of Sintered ZnO Ceramics",
pages = "61-61"
}
Marković, S., Stanković, A., Veselinović, L., Belošević Čavor, J., Škapin, S. D., Stojadinović, S., Rac, V., Lević, S., Janković Častvan, I.,& Uskoković, D. (2015). Influence of Point Defects Concentration on Densification Process and Optical Properties of Sintered ZnO Ceramics.
Programme and The Book of Abstracts / Seventeenth Annual Conference YUCOMAT 205, Herceg Novi, August 31– September 4, 2015
Belgrade : Materials Research Society of Serbia., 61-61.
Marković S, Stanković A, Veselinović L, Belošević Čavor J, Škapin SD, Stojadinović S, Rac V, Lević S, Janković Častvan I, Uskoković D. Influence of Point Defects Concentration on Densification Process and Optical Properties of Sintered ZnO Ceramics. Programme and The Book of Abstracts / Seventeenth Annual Conference YUCOMAT 205, Herceg Novi, August 31– September 4, 2015. 2015;:61-61
Marković Smilja, Stanković Ana, Veselinović Ljiljana, Belošević Čavor Jelena, Škapin Srečo Davor, Stojadinović Stevan, Rac Vladislav, Lević Steva, Janković Častvan Ivona, Uskoković Dragan, "Influence of Point Defects Concentration on Densification Process and Optical Properties of Sintered ZnO Ceramics" Programme and The Book of Abstracts / Seventeenth Annual Conference YUCOMAT 205, Herceg Novi, August 31– September 4, 2015 (2015):61-61

Geopolymer materials based on the electric arc furnace slag

Nikolić, Irena; Janković Častvan, Ivona; Radmilović, Vuk V.; Karanović, Ljiljana; Marković, Smilja; Mentus, Slavko; Radmilović, Velimir R.

(Belgrade : Materials Research Society of Serbia, 2013)

TY  - CONF
AU  - Nikolić, Irena
AU  - Janković Častvan, Ivona
AU  - Radmilović, Vuk V.
AU  - Karanović, Ljiljana
AU  - Marković, Smilja
AU  - Mentus, Slavko
AU  - Radmilović, Velimir R.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/401
AB  - The remelting of iron and steel scrap in the electric arc furnaces generates the non-hazardous waste – electric arc furnace slag (EAFS), which can be disposed of to appropriate landfills. Currently, this slag found its application in conventional concrete production to improve its mechanical, chemical and physical properties, as an additive to asphalt base mixture and in cement production. In this study we have investigated the effect of alkaline dosage on the strength and thermal resistance of EAFS based geopolymers. The results have shown that these materials are mainly amorphous with some crystal phases remained from the undisolved EAFS such as larnite, gehlenite, wuestite, monticellite, calcite. Compressive strength of these materials is strongly influenced by the alkaline dosage. An increase of NaOH concentration in the interval of 7-10 M leads to the increase of geopolymer’s strength. The maximal compressive strength of EAFS based geopolymer was obtained using the 10 M NaOH. Further increase of alkaline dosage to the value of 13 M NaOH results in the slight decrease of the geopolymer strength. Additionally, depending on the synthesis parameters, EAFS based geopolymers exhibit improved durability in high temperature environments in comparison with conventional cement based materials. All investigated samples exhibit a shrinkage which is attributed to the change of porosity. The mass loss due to the loss of water was also observed. This research was supported by a Ministry of Science of Montenegro under the contract No 01-460.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts
T1  - Geopolymer materials based on the electric arc furnace slag
SP  - 47
EP  - 47
ER  - 
@conference{
author = "Nikolić, Irena and Janković Častvan, Ivona and Radmilović, Vuk V. and Karanović, Ljiljana and Marković, Smilja and Mentus, Slavko and Radmilović, Velimir R.",
year = "2013",
url = "http://dais.sanu.ac.rs/123456789/401",
abstract = "The remelting of iron and steel scrap in the electric arc furnaces generates the non-hazardous waste – electric arc furnace slag (EAFS), which can be disposed of to appropriate landfills. Currently, this slag found its application in conventional concrete production to improve its mechanical, chemical and physical properties, as an additive to asphalt base mixture and in cement production. In this study we have investigated the effect of alkaline dosage on the strength and thermal resistance of EAFS based geopolymers. The results have shown that these materials are mainly amorphous with some crystal phases remained from the undisolved EAFS such as larnite, gehlenite, wuestite, monticellite, calcite. Compressive strength of these materials is strongly influenced by the alkaline dosage. An increase of NaOH concentration in the interval of 7-10 M leads to the increase of geopolymer’s strength. The maximal compressive strength of EAFS based geopolymer was obtained using the 10 M NaOH. Further increase of alkaline dosage to the value of 13 M NaOH results in the slight decrease of the geopolymer strength. Additionally, depending on the synthesis parameters, EAFS based geopolymers exhibit improved durability in high temperature environments in comparison with conventional cement based materials. All investigated samples exhibit a shrinkage which is attributed to the change of porosity. The mass loss due to the loss of water was also observed. This research was supported by a Ministry of Science of Montenegro under the contract No 01-460.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts",
title = "Geopolymer materials based on the electric arc furnace slag",
pages = "47-47"
}
Nikolić, I., Janković Častvan, I., Radmilović, V. V., Karanović, L., Marković, S., Mentus, S.,& Radmilović, V. R. (2013). Geopolymer materials based on the electric arc furnace slag.
The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 47-47.
Nikolić I, Janković Častvan I, Radmilović VV, Karanović L, Marković S, Mentus S, Radmilović VR. Geopolymer materials based on the electric arc furnace slag. The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts. 2013;:47-47
Nikolić Irena, Janković Častvan Ivona, Radmilović Vuk V., Karanović Ljiljana, Marković Smilja, Mentus Slavko, Radmilović Velimir R., "Geopolymer materials based on the electric arc furnace slag" The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts (2013):47-47

Surface properties of HAP particles obtained by hydrothermal decomposition of urea and calcium-EDTA chelates

Janaćković, Đorđe; Janković, Ivona; Petrović, R; Kostić-Gvozdenović, L.; Milonjić, Slobodan; Uskoković, Dragan

(2003)

TY  - CONF
AU  - Janaćković, Đorđe
AU  - Janković, Ivona
AU  - Petrović, R
AU  - Kostić-Gvozdenović, L.
AU  - Milonjić, Slobodan
AU  - Uskoković, Dragan
PY  - 2003
UR  - http://dais.sanu.ac.rs/123456789/3285
AB  - In this paper surface properties of calcium-hydroxyapatite, synthesized by modified hydrothermal reaction of urea and Ca(EDTA)(2-) in phosphate solutions, as well as the dependence of calcium hydroxyapatite dispersion stability on pH were determined. The specific surface area of calcium-hydroxyapatite was experimentally found to be 67 m(2)/g. The point of zero charge (PZC) of indifferent KCl electrolyte of 6.8 +/- 0.1 was determined by the batch equilibration method. From the dependence of surface charge density on pH and electrolyte concentration, the intrinsic equilibrium constant of surface groups p K-a2(int) was determined to be 8.3 +/- 0.1, while p K-a1(int) calculated from the pK(a2)(int) and point of zero charge values, is 5.3 +/- 0.1. Hydroxyapatite suspension stability was investigated, in the pH range from 7 to 12, it was revealed that the most stable dispersion at pH 10.
C3  - 15th International Symposium on Ceramics in Medicine, Dec 04-08, 2002, Univ Technol, Sydney, Australia
T1  - Surface properties of HAP particles obtained by hydrothermal decomposition of urea and calcium-EDTA chelates
SP  - 437
EP  - 440
DO  - 10.4028/www.scientific.net/KEM.240-242.437
ER  - 
@conference{
author = "Janaćković, Đorđe and Janković, Ivona and Petrović, R and Kostić-Gvozdenović, L. and Milonjić, Slobodan and Uskoković, Dragan",
year = "2003",
url = "http://dais.sanu.ac.rs/123456789/3285",
abstract = "In this paper surface properties of calcium-hydroxyapatite, synthesized by modified hydrothermal reaction of urea and Ca(EDTA)(2-) in phosphate solutions, as well as the dependence of calcium hydroxyapatite dispersion stability on pH were determined. The specific surface area of calcium-hydroxyapatite was experimentally found to be 67 m(2)/g. The point of zero charge (PZC) of indifferent KCl electrolyte of 6.8 +/- 0.1 was determined by the batch equilibration method. From the dependence of surface charge density on pH and electrolyte concentration, the intrinsic equilibrium constant of surface groups p K-a2(int) was determined to be 8.3 +/- 0.1, while p K-a1(int) calculated from the pK(a2)(int) and point of zero charge values, is 5.3 +/- 0.1. Hydroxyapatite suspension stability was investigated, in the pH range from 7 to 12, it was revealed that the most stable dispersion at pH 10.",
journal = "15th International Symposium on Ceramics in Medicine, Dec 04-08, 2002, Univ Technol, Sydney, Australia",
title = "Surface properties of HAP particles obtained by hydrothermal decomposition of urea and calcium-EDTA chelates",
pages = "437-440",
doi = "10.4028/www.scientific.net/KEM.240-242.437"
}
Janaćković, Đ., Janković, I., Petrović, R., Kostić-Gvozdenović, L., Milonjić, S.,& Uskoković, D. (2003). Surface properties of HAP particles obtained by hydrothermal decomposition of urea and calcium-EDTA chelates.
15th International Symposium on Ceramics in Medicine, Dec 04-08, 2002, Univ Technol, Sydney, Australia, 437-440.
https://doi.org/10.4028/www.scientific.net/KEM.240-242.437
Janaćković Đ, Janković I, Petrović R, Kostić-Gvozdenović L, Milonjić S, Uskoković D. Surface properties of HAP particles obtained by hydrothermal decomposition of urea and calcium-EDTA chelates. 15th International Symposium on Ceramics in Medicine, Dec 04-08, 2002, Univ Technol, Sydney, Australia. 2003;:437-440
Janaćković Đorđe, Janković Ivona, Petrović R, Kostić-Gvozdenović L., Milonjić Slobodan, Uskoković Dragan, "Surface properties of HAP particles obtained by hydrothermal decomposition of urea and calcium-EDTA chelates" 15th International Symposium on Ceramics in Medicine, Dec 04-08, 2002, Univ Technol, Sydney, Australia (2003):437-440,
https://doi.org/10.4028/www.scientific.net/KEM.240-242.437 .
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