TY  - JOUR
AU  - Dojčinović, Milena
AU  - Vasiljević, Zorka Z
AU  - Rakočević, Lazar
AU  - Pavlović, Vera P.
AU  - Ammar, Souad
AU  - Vujancevic, Jelena
AU  - Nikolić, Maria Vesna
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1615
AB  - Temperature- and humidity-sensing properties were evaluated of NixMg1-x spinel ferrites (0 ≤ x ≤ 1) synthesized by a sol-gel combustion method using citric acid as fuel and nitrate ions as oxidizing agents. After the exothermic reaction, amorphous powders were calcined at 700 °C   ollowed by characterization with XRD, FTIR, XPS, EDS and Raman spectroscopy and FESEM 
 icroscopy. Synthesized powders were tested as humidity- and temperature-sensing materials in the form of thick films on interdigitated electrodes on alumina substrate in a climatic chamber. The physicochemical investigation of synthesized materials revealed a cubic spinel Fd3m phase, nanosized but agglomerated particles with a partially to completely inverse spinel structure with increasing Ni content. Ni0.1Mg0.9Fe2O4 showed the highest material constant (B30,90) value of 3747 K and temperature sensitivity (α) of −4.08%/K compared to pure magnesium ferrite (B30,90 value of 3426 K and α of −3.73%/K) and the highest average sensitivity towards humidity of 922 kΩ/%RH in the relative humidity (RH) range of 40–90% at the working temperature of 25 °C.
PB  - MDPI (Basel, Switzerland)
T2  - Chemosensors
T1  - Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites
IS  - 1
SP  - 34
VL  - 11
DO  - https://doi.org/10.3390/chemosensors11010034
ER  - 

@article{
author = "Dojčinović, Milena and Vasiljević, Zorka Z and Rakočević, Lazar and Pavlović, Vera P. and Ammar, Souad and Vujancevic, Jelena and Nikolić, Maria Vesna",
year = "2023",
abstract = "Temperature- and humidity-sensing properties were evaluated of NixMg1-x spinel ferrites (0 ≤ x ≤ 1) synthesized by a sol-gel combustion method using citric acid as fuel and nitrate ions as oxidizing agents. After the exothermic reaction, amorphous powders were calcined at 700 °C   ollowed by characterization with XRD, FTIR, XPS, EDS and Raman spectroscopy and FESEM 
 icroscopy. Synthesized powders were tested as humidity- and temperature-sensing materials in the form of thick films on interdigitated electrodes on alumina substrate in a climatic chamber. The physicochemical investigation of synthesized materials revealed a cubic spinel Fd3m phase, nanosized but agglomerated particles with a partially to completely inverse spinel structure with increasing Ni content. Ni0.1Mg0.9Fe2O4 showed the highest material constant (B30,90) value of 3747 K and temperature sensitivity (α) of −4.08%/K compared to pure magnesium ferrite (B30,90 value of 3426 K and α of −3.73%/K) and the highest average sensitivity towards humidity of 922 kΩ/%RH in the relative humidity (RH) range of 40–90% at the working temperature of 25 °C.",
publisher = "MDPI (Basel, Switzerland)",
journal = "Chemosensors",
title = "Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites",
number = "1",
pages = "34",
volume = "11",
doi = "https://doi.org/10.3390/chemosensors11010034"
}

Dojčinović, M., Vasiljević, Z. Z., Rakočević, L., Pavlović, V. P., Ammar, S., Vujancevic, J.,& Nikolić, M. V.. (2023). Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites. in Chemosensors
MDPI (Basel, Switzerland)., 11(1), 34.
https://doi.org/https://doi.org/10.3390/chemosensors11010034

Dojčinović M, Vasiljević ZZ, Rakočević L, Pavlović VP, Ammar S, Vujancevic J, Nikolić MV. Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites. in Chemosensors. 2023;11(1):34.
doi:https://doi.org/10.3390/chemosensors11010034 .

Dojčinović, Milena, Vasiljević, Zorka Z, Rakočević, Lazar, Pavlović, Vera P., Ammar, Souad, Vujancevic, Jelena, Nikolić, Maria Vesna, "Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites" in Chemosensors, 11, no. 1 (2023):34,
https://doi.org/https://doi.org/10.3390/chemosensors11010034 . .

TY  - JOUR
AU  - Vujancevic, Jelena
AU  - Andričević, Pavao
AU  - Djokic, Veljko
AU  - Blagojevic, Vladimir
AU  - Pavlović, Vera
AU  - Ćirković, Jovana
AU  - Horvath, Endre
AU  - Forro, Laszlo
AU  - Karoui, Abdennaceur
AU  - Pavlović, Vladimir
AU  - Janackovic, Djordje
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2863
AB  - In this study, we report the influence of vanadium oxide (VO), as a photosensitive component, on the photoactivity of TiO2 nanotubes (TNTs). A series of TNTs of varying tube diameter were synthesized by the anodization of titanium foils at different voltages, while vanadium oxide was deposited on TNTs by wet chemical deposition. An improvement in the optical properties of nanotubes was observed after the deposition of vanadium oxide. An improvement in the optical properties (redshift in UV-Vis spectra) of TNTs and TNT/VO was noted. The photocatalytic activity was improved with increasing tube diameter, while it was weakened after the deposition of VO. Furthermore, photoactivity was investigated in photodiodes based on TNTs or TNT/VO and single crystals of CH3NH3PbI3. The photoelectric measurement revealed that different TNT diameters did not influence the I-V characteristic of the photodiodes, while the deposition of VO improved the photocurrent for smaller TNTs
PB  - MDPI
T2  - Catalysts
T1  - Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal
VL  - 13
DO  - 10.3390/catal13020352
ER  - 

@article{
author = "Vujancevic, Jelena and Andričević, Pavao and Djokic, Veljko and Blagojevic, Vladimir and Pavlović, Vera and Ćirković, Jovana and Horvath, Endre and Forro, Laszlo and Karoui, Abdennaceur and Pavlović, Vladimir and Janackovic, Djordje",
year = "2023",
abstract = "In this study, we report the influence of vanadium oxide (VO), as a photosensitive component, on the photoactivity of TiO2 nanotubes (TNTs). A series of TNTs of varying tube diameter were synthesized by the anodization of titanium foils at different voltages, while vanadium oxide was deposited on TNTs by wet chemical deposition. An improvement in the optical properties of nanotubes was observed after the deposition of vanadium oxide. An improvement in the optical properties (redshift in UV-Vis spectra) of TNTs and TNT/VO was noted. The photocatalytic activity was improved with increasing tube diameter, while it was weakened after the deposition of VO. Furthermore, photoactivity was investigated in photodiodes based on TNTs or TNT/VO and single crystals of CH3NH3PbI3. The photoelectric measurement revealed that different TNT diameters did not influence the I-V characteristic of the photodiodes, while the deposition of VO improved the photocurrent for smaller TNTs",
publisher = "MDPI",
journal = "Catalysts",
title = "Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal",
volume = "13",
doi = "10.3390/catal13020352"
}

Vujancevic, J., Andričević, P., Djokic, V., Blagojevic, V., Pavlović, V., Ćirković, J., Horvath, E., Forro, L., Karoui, A., Pavlović, V.,& Janackovic, D.. (2023). Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal. in Catalysts
MDPI., 13.
https://doi.org/10.3390/catal13020352

Vujancevic J, Andričević P, Djokic V, Blagojevic V, Pavlović V, Ćirković J, Horvath E, Forro L, Karoui A, Pavlović V, Janackovic D. Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal. in Catalysts. 2023;13.
doi:10.3390/catal13020352 .

Vujancevic, Jelena, Andričević, Pavao, Djokic, Veljko, Blagojevic, Vladimir, Pavlović, Vera, Ćirković, Jovana, Horvath, Endre, Forro, Laszlo, Karoui, Abdennaceur, Pavlović, Vladimir, Janackovic, Djordje, "Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal" in Catalysts, 13 (2023),
https://doi.org/10.3390/catal13020352 . .

TY  - CONF
AU  - Zivotic, Miodrag
AU  - Stojiljković, Dragoslava
AU  - Nikolić, Nenad
AU  - Bajuk-Bogdanovic, Danica
AU  - Životić, Dragana
PY  - 2023
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2535
AB  - The devolatilization process is the initial step in the coal combustion. Devolatilization research
was performed on a wire-mesh reactor in inert gas, at the atmospheric pressure. Two different
sets of feed coal samples of various particle diameters (0.50<х<1.00 mm; 0.25<x<0.50 mm;
0.1<x<0.25 mm; x<0.1 mm) from the Kolubara and Kostolac mines were used for research.
Lignite samples were spread in a thin layer a few particles thick, over electrically heated
stainless steel wire mesh and rapidly heated at four different temperature stages (300oC, 500oC,
700oC, 900oC). Maceral analysis and rank deternination were performed on 32 combustion
residues and 8 lignite samples following the classification developed by ICCP for lignite,
bituminous coal and coal chars.
PB  - Geological Society of Greece
C3  - Joint 74th ICCP and 39th TSOP Meeting “Organic Petrology in the Energy Transition Era: Challenges ahead", Bulletin of the Geological Society Special Publication
T1  - The behaviour of Kolubara and Kostolac lignite during devolatilisation process: A petrographical approach
IS  - 12
SP  - 65
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2535
ER  - 

@conference{
author = "Zivotic, Miodrag and Stojiljković, Dragoslava and Nikolić, Nenad and Bajuk-Bogdanovic, Danica and Životić, Dragana",
year = "2023",
abstract = "The devolatilization process is the initial step in the coal combustion. Devolatilization research
was performed on a wire-mesh reactor in inert gas, at the atmospheric pressure. Two different
sets of feed coal samples of various particle diameters (0.50<х<1.00 mm; 0.25<x<0.50 mm;
0.1<x<0.25 mm; x<0.1 mm) from the Kolubara and Kostolac mines were used for research.
Lignite samples were spread in a thin layer a few particles thick, over electrically heated
stainless steel wire mesh and rapidly heated at four different temperature stages (300oC, 500oC,
700oC, 900oC). Maceral analysis and rank deternination were performed on 32 combustion
residues and 8 lignite samples following the classification developed by ICCP for lignite,
bituminous coal and coal chars.",
publisher = "Geological Society of Greece",
journal = "Joint 74th ICCP and 39th TSOP Meeting “Organic Petrology in the Energy Transition Era: Challenges ahead", Bulletin of the Geological Society Special Publication",
title = "The behaviour of Kolubara and Kostolac lignite during devolatilisation process: A petrographical approach",
number = "12",
pages = "65",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2535"
}

Zivotic, M., Stojiljković, D., Nikolić, N., Bajuk-Bogdanovic, D.,& Životić, D.. (2023). The behaviour of Kolubara and Kostolac lignite during devolatilisation process: A petrographical approach. in Joint 74th ICCP and 39th TSOP Meeting “Organic Petrology in the Energy Transition Era: Challenges ahead", Bulletin of the Geological Society Special Publication
Geological Society of Greece.(12), 65.
https://hdl.handle.net/21.15107/rcub_rimsi_2535

Zivotic M, Stojiljković D, Nikolić N, Bajuk-Bogdanovic D, Životić D. The behaviour of Kolubara and Kostolac lignite during devolatilisation process: A petrographical approach. in Joint 74th ICCP and 39th TSOP Meeting “Organic Petrology in the Energy Transition Era: Challenges ahead", Bulletin of the Geological Society Special Publication. 2023;(12):65.
https://hdl.handle.net/21.15107/rcub_rimsi_2535 .

Zivotic, Miodrag, Stojiljković, Dragoslava, Nikolić, Nenad, Bajuk-Bogdanovic, Danica, Životić, Dragana, "The behaviour of Kolubara and Kostolac lignite during devolatilisation process: A petrographical approach" in Joint 74th ICCP and 39th TSOP Meeting “Organic Petrology in the Energy Transition Era: Challenges ahead", Bulletin of the Geological Society Special Publication, no. 12 (2023):65,
https://hdl.handle.net/21.15107/rcub_rimsi_2535 .

TY  - CONF
AU  - Dojčinović, Milena
AU  - Vasiljević, Zorka Z
AU  - Pavlović, Vera P.
AU  - Vujančević, Jelena
AU  - Tadić, Nenad B.
AU  - Nikolić, Maria Vesna
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13642
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1611
AB  - Problems that countries all over the world have in common are dependence of economy and energy production on fossil fuels. There is a growing need for energy production and storage routes that are safe for the environment, renewable, efficient and cheap. One of the directions in which science is moving forward is discovering materials suitable for use in batteries and supercapacitors to improve their operating potential, electrical capacity or biocompatibility. The objective is also to synthesize materials for batteries or supercapacitors that are cheap, consist of earth abundant elements and have high electrochemical activity.In this work, mixed nickel-magnesium ferrites NixMg1−xFe2O4, with x being 0, 0.1, 0.3, 0.5, 0.7, 0.9 and 1, were synthesized via sol-gel combustion synthesis with citric acid used as fuel and nitrate ions used as oxidizing agents. Combusted powders were calcined at 700 °C. The structure and morphology of the powders were characterized with X-ray diffraction method (XRD), field emission scanning electron microscopy (FESEM), Raman and FTIR spectroscopy. The band gap was calculated by using UV/Vis diffuse reflectance spectroscopy (DRS). Samples were cast on nickel foam and tested as energy storage materials in a three-electrode setup in 3 M KOH aqueous solution as electrolyte. The methods used were cyclic voltammetry (CV) and constant current chronopotentiometry to obtain galvanostatic charge-discharge (GCD) curves. Results show that all of the synthesized materials show battery-type charge storage in alkaline electrolyte due to the formation of metal cation oxyhydroxides. With increasing nickel content, electrochemical activity drops. The highest value of capacity, 34.3 mA h g-1 at the current density of 500 mA g-1 is ascribed to magnesium ferrite, MgFe2O4.
PB  - Belgrade : University of Belgrade, Faculty of Physical Chemistry
C3  - Contemporary batteries and supercapacitors : COIN2022 : program and book of abstracts / International Symposium Belgrade, June 1-2, 2022
T1  - Mixed Ni-Mg Spinel Ferrites Used as Materials for Charge Storage Electrodes
EP  - 47
SP  - 47
UR  - https://hdl.handle.net/21.15107/rcub_dais_13642
ER  - 

@conference{
author = "Dojčinović, Milena and Vasiljević, Zorka Z and Pavlović, Vera P. and Vujančević, Jelena and Tadić, Nenad B. and Nikolić, Maria Vesna",
year = "2022",
abstract = "Problems that countries all over the world have in common are dependence of economy and energy production on fossil fuels. There is a growing need for energy production and storage routes that are safe for the environment, renewable, efficient and cheap. One of the directions in which science is moving forward is discovering materials suitable for use in batteries and supercapacitors to improve their operating potential, electrical capacity or biocompatibility. The objective is also to synthesize materials for batteries or supercapacitors that are cheap, consist of earth abundant elements and have high electrochemical activity.In this work, mixed nickel-magnesium ferrites NixMg1−xFe2O4, with x being 0, 0.1, 0.3, 0.5, 0.7, 0.9 and 1, were synthesized via sol-gel combustion synthesis with citric acid used as fuel and nitrate ions used as oxidizing agents. Combusted powders were calcined at 700 °C. The structure and morphology of the powders were characterized with X-ray diffraction method (XRD), field emission scanning electron microscopy (FESEM), Raman and FTIR spectroscopy. The band gap was calculated by using UV/Vis diffuse reflectance spectroscopy (DRS). Samples were cast on nickel foam and tested as energy storage materials in a three-electrode setup in 3 M KOH aqueous solution as electrolyte. The methods used were cyclic voltammetry (CV) and constant current chronopotentiometry to obtain galvanostatic charge-discharge (GCD) curves. Results show that all of the synthesized materials show battery-type charge storage in alkaline electrolyte due to the formation of metal cation oxyhydroxides. With increasing nickel content, electrochemical activity drops. The highest value of capacity, 34.3 mA h g-1 at the current density of 500 mA g-1 is ascribed to magnesium ferrite, MgFe2O4.",
publisher = "Belgrade : University of Belgrade, Faculty of Physical Chemistry",
journal = "Contemporary batteries and supercapacitors : COIN2022 : program and book of abstracts / International Symposium Belgrade, June 1-2, 2022",
title = "Mixed Ni-Mg Spinel Ferrites Used as Materials for Charge Storage Electrodes",
pages = "47-47",
url = "https://hdl.handle.net/21.15107/rcub_dais_13642"
}

Dojčinović, M., Vasiljević, Z. Z., Pavlović, V. P., Vujančević, J., Tadić, N. B.,& Nikolić, M. V.. (2022). Mixed Ni-Mg Spinel Ferrites Used as Materials for Charge Storage Electrodes. in Contemporary batteries and supercapacitors : COIN2022 : program and book of abstracts / International Symposium Belgrade, June 1-2, 2022
Belgrade : University of Belgrade, Faculty of Physical Chemistry., 47-47.
https://hdl.handle.net/21.15107/rcub_dais_13642

Dojčinović M, Vasiljević ZZ, Pavlović VP, Vujančević J, Tadić NB, Nikolić MV. Mixed Ni-Mg Spinel Ferrites Used as Materials for Charge Storage Electrodes. in Contemporary batteries and supercapacitors : COIN2022 : program and book of abstracts / International Symposium Belgrade, June 1-2, 2022. 2022;:47-47.
https://hdl.handle.net/21.15107/rcub_dais_13642 .

Dojčinović, Milena, Vasiljević, Zorka Z, Pavlović, Vera P., Vujančević, Jelena, Tadić, Nenad B., Nikolić, Maria Vesna, "Mixed Ni-Mg Spinel Ferrites Used as Materials for Charge Storage Electrodes" in Contemporary batteries and supercapacitors : COIN2022 : program and book of abstracts / International Symposium Belgrade, June 1-2, 2022 (2022):47-47,
https://hdl.handle.net/21.15107/rcub_dais_13642 .