TY  - JOUR
AU  - Nedić, Nikodin V.
AU  - Ivanović, Nikola V.
AU  - Videnović, Ivan R.
AU  - Spasojević, Djordje
PY  - 2023
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6258
AB  - We present the results of the optical emission spectroscopy study of the Ar I 517.753 nm spectral line, observed at different positions in the cathode sheath of an abnormal DC Grimm-type glow discharge source operated in argon. The line profiles were recorded parallel to the cathode surface (side-on view), along the discharge axis from the cathode towards the negative glow. The spectra show a red line shift, which diminishes with the distance from the cathode surface and decreasing electric field. This allows experimental determination of the coefficient C in quadratic relation, Δν = CE2, between the wavenumber Stark shifts, Δν, and electric field strength, E. The above relation is a low-field (up to 25 kV/cm) approximation of the quadratic dependence of the upper-level shift, measured for a large set of argon lines at high electric fields (up to 700 kV/cm) by Windholz (Phys Scr 21:67–74, 1980). One of these lines, Ar I 537.349 nm, is used here for independent measurement of the electric field E and correlated with the Ar I 517.753 nm upper-level wavenumber shift Δν to obtain a line-specific coefficient C. In this way, the Ar I 517.753 nm spectral line complements the set of argon lines suitable for Stark spectroscopy diagnostics of the electric field distribution and cathode sheath length, the knowledge of which allows for a better understanding and description of the glow discharge processes through various theoretical models. Graphical abstract: [Figure not available: see fulltext.]. © 2022, The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature.
T2  - European Physical Journal D
T2  - European Physical Journal D
T1  - On the use of Ar I 517.753 nm spectral line for electric field measurements in the cathode sheath of a Grimm-type glow discharge source
IS  - 1
VL  - 77
DO  - 10.1140/epjd/s10053-022-00587-0
ER  - 

@article{
author = "Nedić, Nikodin V. and Ivanović, Nikola V. and Videnović, Ivan R. and Spasojević, Djordje",
year = "2023",
abstract = "We present the results of the optical emission spectroscopy study of the Ar I 517.753 nm spectral line, observed at different positions in the cathode sheath of an abnormal DC Grimm-type glow discharge source operated in argon. The line profiles were recorded parallel to the cathode surface (side-on view), along the discharge axis from the cathode towards the negative glow. The spectra show a red line shift, which diminishes with the distance from the cathode surface and decreasing electric field. This allows experimental determination of the coefficient C in quadratic relation, Δν = CE2, between the wavenumber Stark shifts, Δν, and electric field strength, E. The above relation is a low-field (up to 25 kV/cm) approximation of the quadratic dependence of the upper-level shift, measured for a large set of argon lines at high electric fields (up to 700 kV/cm) by Windholz (Phys Scr 21:67–74, 1980). One of these lines, Ar I 537.349 nm, is used here for independent measurement of the electric field E and correlated with the Ar I 517.753 nm upper-level wavenumber shift Δν to obtain a line-specific coefficient C. In this way, the Ar I 517.753 nm spectral line complements the set of argon lines suitable for Stark spectroscopy diagnostics of the electric field distribution and cathode sheath length, the knowledge of which allows for a better understanding and description of the glow discharge processes through various theoretical models. Graphical abstract: [Figure not available: see fulltext.]. © 2022, The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature.",
journal = "European Physical Journal D, European Physical Journal D",
title = "On the use of Ar I 517.753 nm spectral line for electric field measurements in the cathode sheath of a Grimm-type glow discharge source",
number = "1",
volume = "77",
doi = "10.1140/epjd/s10053-022-00587-0"
}

Nedić, N. V., Ivanović, N. V., Videnović, I. R.,& Spasojević, D.. (2023). On the use of Ar I 517.753 nm spectral line for electric field measurements in the cathode sheath of a Grimm-type glow discharge source. in European Physical Journal D, 77(1).
https://doi.org/10.1140/epjd/s10053-022-00587-0

Nedić NV, Ivanović NV, Videnović IR, Spasojević D. On the use of Ar I 517.753 nm spectral line for electric field measurements in the cathode sheath of a Grimm-type glow discharge source. in European Physical Journal D. 2023;77(1).
doi:10.1140/epjd/s10053-022-00587-0 .

Nedić, Nikodin V., Ivanović, Nikola V., Videnović, Ivan R., Spasojević, Djordje, "On the use of Ar I 517.753 nm spectral line for electric field measurements in the cathode sheath of a Grimm-type glow discharge source" in European Physical Journal D, 77, no. 1 (2023),
https://doi.org/10.1140/epjd/s10053-022-00587-0 . .

TY  - JOUR
AU  - Spasojević, Djordje
AU  - Ivanović, Nikola V.
AU  - Nedić, Nikodin V.
AU  - Vasiljević, Milica
AU  - Šišović, Nikola M.
AU  - Konjević, Nikola
PY  - 2023
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6350
AB  - We report a study of the cathode sheath (CS) space of the argon glow discharges in the abnormal DC regime by means of the iterative kinetic model. By matching the model shapes of the side-on spectra with the experimental data for the Ar II 460.954 nm line obtained via optical emission spectroscopy, we have estimated the thickness of the CS space and the distributions of the electric field strength and gas temperature over the entire CS space of discharge. Graphical abstract: [Figure not available: see fulltext.] © 2023, The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature.
T2  - European Physical Journal D
T2  - European Physical Journal D
T1  - Iterative kinetic model application in diagnostics of argon abnormal DC glow discharges
IS  - 5
VL  - 77
DO  - 10.1140/epjd/s10053-023-00650-4
ER  - 

@article{
author = "Spasojević, Djordje and Ivanović, Nikola V. and Nedić, Nikodin V. and Vasiljević, Milica and Šišović, Nikola M. and Konjević, Nikola",
year = "2023",
abstract = "We report a study of the cathode sheath (CS) space of the argon glow discharges in the abnormal DC regime by means of the iterative kinetic model. By matching the model shapes of the side-on spectra with the experimental data for the Ar II 460.954 nm line obtained via optical emission spectroscopy, we have estimated the thickness of the CS space and the distributions of the electric field strength and gas temperature over the entire CS space of discharge. Graphical abstract: [Figure not available: see fulltext.] © 2023, The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature.",
journal = "European Physical Journal D, European Physical Journal D",
title = "Iterative kinetic model application in diagnostics of argon abnormal DC glow discharges",
number = "5",
volume = "77",
doi = "10.1140/epjd/s10053-023-00650-4"
}

Spasojević, D., Ivanović, N. V., Nedić, N. V., Vasiljević, M., Šišović, N. M.,& Konjević, N.. (2023). Iterative kinetic model application in diagnostics of argon abnormal DC glow discharges. in European Physical Journal D, 77(5).
https://doi.org/10.1140/epjd/s10053-023-00650-4

Spasojević D, Ivanović NV, Nedić NV, Vasiljević M, Šišović NM, Konjević N. Iterative kinetic model application in diagnostics of argon abnormal DC glow discharges. in European Physical Journal D. 2023;77(5).
doi:10.1140/epjd/s10053-023-00650-4 .

Spasojević, Djordje, Ivanović, Nikola V., Nedić, Nikodin V., Vasiljević, Milica, Šišović, Nikola M., Konjević, Nikola, "Iterative kinetic model application in diagnostics of argon abnormal DC glow discharges" in European Physical Journal D, 77, no. 5 (2023),
https://doi.org/10.1140/epjd/s10053-023-00650-4 . .

TY  - JOUR
AU  - Šuljagić, Marija
AU  - Petronijević, Ivan
AU  - Mirković, Miljana M.
AU  - Kremenović, Aleksandar
AU  - Džunuzović, Adis
AU  - Pavlović, Vladimir B.
AU  - Kalezić-Glišović, Aleksandra
AU  - Andjelković, Ljubica
PY  - 2023
UR  - https://www.mdpi.com/2304-6740/11/2/51
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6307
AB  - To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ferroelectric properties were investigated. The optimal phase composition in the BaTiO3/NiFe2O4 composite, sintered at 1150 °C, resulted in a wide frequency range stability. Additionally, particular phase composition indicates favorable properties such as low conductivity and ideal-like hysteresis loop behavior. The favorable properties of BaTiO3/NiFe2O4 make this particular composite an ideal material choice for further studies on applications of multi-ferroic devices.
T2  - Inorganics
T2  - Inorganics
T1  - BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties
IS  - 2
SP  - 51
VL  - 11
DO  - 10.3390/inorganics11020051
ER  - 

@article{
author = "Šuljagić, Marija and Petronijević, Ivan and Mirković, Miljana M. and Kremenović, Aleksandar and Džunuzović, Adis and Pavlović, Vladimir B. and Kalezić-Glišović, Aleksandra and Andjelković, Ljubica",
year = "2023",
abstract = "To investigate the influence of spinel structure and sintering temperature on the functional properties of BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1), NiFe2O4, ZnFe2O4, and Ni0.5Zn0.5Fe2O4 were in situ prepared by thermal decomposition onto BaTiO3 surface from acetylacetonate precursors. As-prepared powders were additionally sintered at 1150 °C and 1300 °C. X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS) were used for the detailed examination of phase composition and morphology. The magnetic, dielectric, and ferroelectric properties were investigated. The optimal phase composition in the BaTiO3/NiFe2O4 composite, sintered at 1150 °C, resulted in a wide frequency range stability. Additionally, particular phase composition indicates favorable properties such as low conductivity and ideal-like hysteresis loop behavior. The favorable properties of BaTiO3/NiFe2O4 make this particular composite an ideal material choice for further studies on applications of multi-ferroic devices.",
journal = "Inorganics, Inorganics",
title = "BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties",
number = "2",
pages = "51",
volume = "11",
doi = "10.3390/inorganics11020051"
}

Šuljagić, M., Petronijević, I., Mirković, M. M., Kremenović, A., Džunuzović, A., Pavlović, V. B., Kalezić-Glišović, A.,& Andjelković, L.. (2023). BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties. in Inorganics, 11(2), 51.
https://doi.org/10.3390/inorganics11020051

Šuljagić M, Petronijević I, Mirković MM, Kremenović A, Džunuzović A, Pavlović VB, Kalezić-Glišović A, Andjelković L. BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties. in Inorganics. 2023;11(2):51.
doi:10.3390/inorganics11020051 .

Šuljagić, Marija, Petronijević, Ivan, Mirković, Miljana M., Kremenović, Aleksandar, Džunuzović, Adis, Pavlović, Vladimir B., Kalezić-Glišović, Aleksandra, Andjelković, Ljubica, "BaTiO3/NixZn1−xFe2O4 (x = 0, 0.5, 1) Composites Synthesized by Thermal Decomposition: Magnetic, Dielectric and Ferroelectric Properties" in Inorganics, 11, no. 2 (2023):51,
https://doi.org/10.3390/inorganics11020051 . .

TY  - JOUR
AU  - Šuljagić, Marija
AU  - Kremenović, Aleksandar
AU  - Petronijević, Ivan
AU  - Džunuzović, Adis
AU  - Mirković, Miljana
AU  - Pavlović, Vladimir
AU  - Anđelković, Ljubica
PY  - 2023
UR  - https://doiserbia.nb.rs/Article.aspx?id=0350-820X2300013S
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6466
AB  - To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the samples sintered at 1300°C had better performances than those sintered at 1150°C. The composite synthesized by thermal decomposition and sintered at 1300°C stands out among other prepared BaTiO3/CoFe2O4 ceramics, owing to high stability in the wide frequency range and low leakage currents. The obtained results indicate that such composite might be successfully applied as a functional multiferroic.
T2  - Science of Sintering
T2  - Science of Sintering
T1  - Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites
EP  - 381
IS  - 3
SP  - 367
VL  - 55
DO  - 10.2298/SOS220512013S
ER  - 

@article{
author = "Šuljagić, Marija and Kremenović, Aleksandar and Petronijević, Ivan and Džunuzović, Adis and Mirković, Miljana and Pavlović, Vladimir and Anđelković, Ljubica",
year = "2023",
abstract = "To investigate the effect of synthesis procedure and sintering temperature on the functional properties of perovskite/spinel ceramics, BaTiO3/CoFe2O4 composites were prepared by thermal decomposition, coprecipitation, and microemulsion method, and sintered at 1150°C and 1300°C. The phase composition and morphology of as-prepared powders as well as sintered ceramics were thoroughly examined by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS). The dielectric and ferroelectric measurements were performed in detail. Generally, the samples sintered at 1300°C had better performances than those sintered at 1150°C. The composite synthesized by thermal decomposition and sintered at 1300°C stands out among other prepared BaTiO3/CoFe2O4 ceramics, owing to high stability in the wide frequency range and low leakage currents. The obtained results indicate that such composite might be successfully applied as a functional multiferroic.",
journal = "Science of Sintering, Science of Sintering",
title = "Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites",
pages = "381-367",
number = "3",
volume = "55",
doi = "10.2298/SOS220512013S"
}

Šuljagić, M., Kremenović, A., Petronijević, I., Džunuzović, A., Mirković, M., Pavlović, V.,& Anđelković, L.. (2023). Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites. in Science of Sintering, 55(3), 367-381.
https://doi.org/10.2298/SOS220512013S

Šuljagić M, Kremenović A, Petronijević I, Džunuzović A, Mirković M, Pavlović V, Anđelković L. Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites. in Science of Sintering. 2023;55(3):367-381.
doi:10.2298/SOS220512013S .

Šuljagić, Marija, Kremenović, Aleksandar, Petronijević, Ivan, Džunuzović, Adis, Mirković, Miljana, Pavlović, Vladimir, Anđelković, Ljubica, "Understanding the effect of synthesis and sintering temperature on the functional properties of barium titanate/cobalt ferrite composites" in Science of Sintering, 55, no. 3 (2023):367-381,
https://doi.org/10.2298/SOS220512013S . .

TY  - JOUR
AU  - Stojanović, Srna Stojanović
AU  - Rac, Vladislav
AU  - Mojsilović, Kristina Mojsilović
AU  - Vasilić, Rastko
AU  - Marković, Smilja
AU  - Damjanović-Vasilić, Ljiljana
PY  - 2023
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6383
AB  - Photocatalytic degradation of bisphenol A (BPA) was investigated using commercial TiO2 P25 nanoparticles supported on natural zeolite clinoptilolite (Cli). Employing ultrasound assisted solid-state dispersion method hybrid photocatalyst containing 20 wt% of TiO2, marked TCli-20, was prepared. The structural, morphological and surface properties, and particle size distribution of TCli-20 were studied by X-ray powder diffraction, Fourier transform infrared spectroscopy, ultraviolet–visible diffuse reflectance spectroscopy, scanning electron microscopy with energy dispersive spectroscopy, atomic force microscopy, Brunner-Emmet-Teller method and laser diffraction. The results revealed a successful loading of TiO2 P25 nanoparticles on Cli surface and the preservation of both zeolitic structure and optical properties of TiO2. The influence of catalyst dose, pH value and the addition of hydrogen peroxide (H2O2) was evaluated. The optimal reaction conditions were 2 g/L of catalyst at near-neutral conditions (pH = 6.4) for complete BPA (5 mg/L) photodegradation after 180 min of exposure to simulated solar light. The addition of H2O2 was beneficial for the degradation process and led to the removal of BPA after 120 min of irradiation. BPA removal (60% for 180 min of irradiation) was reduced when TCli-20 was tested in bottled drinking water due to the presence of bicarbonate ions which acted as scavengers for hydroxyl radicals. Even though the photocatalytic activity of TCli-20 decreased after several cycles of usage, 70% of BPA was still successfully degraded during the fourth cycle. The reusability study showed easy separation, stability and good photocatalytic ability of investigated cost-effective hybrid photocatalyst. © 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
T2  - Environmental Science and Pollution Research
T2  - Environmental Science and Pollution Research
T1  - Photocatalytic degradation of bisphenol A in aqueous solution using TiO2/clinoptilolite hybrid photocatalyst
DO  - 10.1007/s11356-023-28397-w
ER  - 

@article{
author = "Stojanović, Srna Stojanović and Rac, Vladislav and Mojsilović, Kristina Mojsilović and Vasilić, Rastko and Marković, Smilja and Damjanović-Vasilić, Ljiljana",
year = "2023",
abstract = "Photocatalytic degradation of bisphenol A (BPA) was investigated using commercial TiO2 P25 nanoparticles supported on natural zeolite clinoptilolite (Cli). Employing ultrasound assisted solid-state dispersion method hybrid photocatalyst containing 20 wt% of TiO2, marked TCli-20, was prepared. The structural, morphological and surface properties, and particle size distribution of TCli-20 were studied by X-ray powder diffraction, Fourier transform infrared spectroscopy, ultraviolet–visible diffuse reflectance spectroscopy, scanning electron microscopy with energy dispersive spectroscopy, atomic force microscopy, Brunner-Emmet-Teller method and laser diffraction. The results revealed a successful loading of TiO2 P25 nanoparticles on Cli surface and the preservation of both zeolitic structure and optical properties of TiO2. The influence of catalyst dose, pH value and the addition of hydrogen peroxide (H2O2) was evaluated. The optimal reaction conditions were 2 g/L of catalyst at near-neutral conditions (pH = 6.4) for complete BPA (5 mg/L) photodegradation after 180 min of exposure to simulated solar light. The addition of H2O2 was beneficial for the degradation process and led to the removal of BPA after 120 min of irradiation. BPA removal (60% for 180 min of irradiation) was reduced when TCli-20 was tested in bottled drinking water due to the presence of bicarbonate ions which acted as scavengers for hydroxyl radicals. Even though the photocatalytic activity of TCli-20 decreased after several cycles of usage, 70% of BPA was still successfully degraded during the fourth cycle. The reusability study showed easy separation, stability and good photocatalytic ability of investigated cost-effective hybrid photocatalyst. © 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.",
journal = "Environmental Science and Pollution Research, Environmental Science and Pollution Research",
title = "Photocatalytic degradation of bisphenol A in aqueous solution using TiO2/clinoptilolite hybrid photocatalyst",
doi = "10.1007/s11356-023-28397-w"
}

Stojanović, S. S., Rac, V., Mojsilović, K. M., Vasilić, R., Marković, S.,& Damjanović-Vasilić, L.. (2023). Photocatalytic degradation of bisphenol A in aqueous solution using TiO2/clinoptilolite hybrid photocatalyst. in Environmental Science and Pollution Research.
https://doi.org/10.1007/s11356-023-28397-w

Stojanović SS, Rac V, Mojsilović KM, Vasilić R, Marković S, Damjanović-Vasilić L. Photocatalytic degradation of bisphenol A in aqueous solution using TiO2/clinoptilolite hybrid photocatalyst. in Environmental Science and Pollution Research. 2023;.
doi:10.1007/s11356-023-28397-w .

Stojanović, Srna Stojanović, Rac, Vladislav, Mojsilović, Kristina Mojsilović, Vasilić, Rastko, Marković, Smilja, Damjanović-Vasilić, Ljiljana, "Photocatalytic degradation of bisphenol A in aqueous solution using TiO2/clinoptilolite hybrid photocatalyst" in Environmental Science and Pollution Research (2023),
https://doi.org/10.1007/s11356-023-28397-w . .

TY  - JOUR
AU  - Aleksić, Katarina
AU  - Stojković Simatović, Ivana
AU  - Stanković, Ana
AU  - Veselinović, Ljiljana
AU  - Stojadinović, Stevan
AU  - Rac, Vladislav
AU  - Radmilović, Nadežda
AU  - Rajić, Vladimir
AU  - Škapin, Srečo Davor
AU  - Mančić, Lidija
AU  - Marković, Smilja
PY  - 2023
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6368
AB  - Catalytic materials are the greatest challenge for the commercial application of water electrolysis (WEs) and fuel cells (FCs) as clean energy technologies. There is a need to find an alternative to expensive and unavailable platinum group metal (PGM) catalysts. This study aimed to reduce the cost of PGM materials by replacing Ru with RuO2 and lowering the amount of RuO2 by adding abundant and multifunctional ZnO. A ZnO@RuO2 composite in a 10:1 molar ratio was synthesized by microwave processing of a precipitate as a green, low-cost, and fast method, and then annealed at 300°C and 600°C to improve the catalytic properties. The physicochemical properties of the ZnO@RuO2 composites were investigated by X-ray powder diffraction (XRD), Raman and Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM), UV-Vis diffuse reflectance spectroscopy (DRS), and photoluminescence (PL) spectroscopy. The electrochemical activity of the samples was investigated by linear sweep voltammetry in acidic and alkaline electrolytes. We observed good bifunctional catalytic activity of the ZnO@RuO2 composites toward HER and OER in both electrolytes. The improved bifunctional catalytic activity of the ZnO@RuO2 composite by annealing was discussed and attributed to the reduced number of bulk oxygen vacancies and the increased number of established heterojunctions. Copyright © 2023 Aleksić, Stojković Simatović, Stanković, Veselinović, Stojadinović, Rac, Radmilović, Rajić, Škapin, Mančić and Marković.
T2  - Frontiers in Chemistry
T2  - Frontiers in Chemistry
T1  - Enhancement of ZnO@RuO2 bifunctional photo-electro catalytic activity toward water splitting
VL  - 11
DO  - 10.3389/fchem.2023.1173910
ER  - 

@article{
author = "Aleksić, Katarina and Stojković Simatović, Ivana and Stanković, Ana and Veselinović, Ljiljana and Stojadinović, Stevan and Rac, Vladislav and Radmilović, Nadežda and Rajić, Vladimir and Škapin, Srečo Davor and Mančić, Lidija and Marković, Smilja",
year = "2023",
abstract = "Catalytic materials are the greatest challenge for the commercial application of water electrolysis (WEs) and fuel cells (FCs) as clean energy technologies. There is a need to find an alternative to expensive and unavailable platinum group metal (PGM) catalysts. This study aimed to reduce the cost of PGM materials by replacing Ru with RuO2 and lowering the amount of RuO2 by adding abundant and multifunctional ZnO. A ZnO@RuO2 composite in a 10:1 molar ratio was synthesized by microwave processing of a precipitate as a green, low-cost, and fast method, and then annealed at 300°C and 600°C to improve the catalytic properties. The physicochemical properties of the ZnO@RuO2 composites were investigated by X-ray powder diffraction (XRD), Raman and Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM), UV-Vis diffuse reflectance spectroscopy (DRS), and photoluminescence (PL) spectroscopy. The electrochemical activity of the samples was investigated by linear sweep voltammetry in acidic and alkaline electrolytes. We observed good bifunctional catalytic activity of the ZnO@RuO2 composites toward HER and OER in both electrolytes. The improved bifunctional catalytic activity of the ZnO@RuO2 composite by annealing was discussed and attributed to the reduced number of bulk oxygen vacancies and the increased number of established heterojunctions. Copyright © 2023 Aleksić, Stojković Simatović, Stanković, Veselinović, Stojadinović, Rac, Radmilović, Rajić, Škapin, Mančić and Marković.",
journal = "Frontiers in Chemistry, Frontiers in Chemistry",
title = "Enhancement of ZnO@RuO2 bifunctional photo-electro catalytic activity toward water splitting",
volume = "11",
doi = "10.3389/fchem.2023.1173910"
}

Aleksić, K., Stojković Simatović, I., Stanković, A., Veselinović, L., Stojadinović, S., Rac, V., Radmilović, N., Rajić, V., Škapin, S. D., Mančić, L.,& Marković, S.. (2023). Enhancement of ZnO@RuO2 bifunctional photo-electro catalytic activity toward water splitting. in Frontiers in Chemistry, 11.
https://doi.org/10.3389/fchem.2023.1173910

Aleksić K, Stojković Simatović I, Stanković A, Veselinović L, Stojadinović S, Rac V, Radmilović N, Rajić V, Škapin SD, Mančić L, Marković S. Enhancement of ZnO@RuO2 bifunctional photo-electro catalytic activity toward water splitting. in Frontiers in Chemistry. 2023;11.
doi:10.3389/fchem.2023.1173910 .

Aleksić, Katarina, Stojković Simatović, Ivana, Stanković, Ana, Veselinović, Ljiljana, Stojadinović, Stevan, Rac, Vladislav, Radmilović, Nadežda, Rajić, Vladimir, Škapin, Srečo Davor, Mančić, Lidija, Marković, Smilja, "Enhancement of ZnO@RuO2 bifunctional photo-electro catalytic activity toward water splitting" in Frontiers in Chemistry, 11 (2023),
https://doi.org/10.3389/fchem.2023.1173910 . .

TY  - JOUR
AU  - Nedić, Nikodin V.
AU  - Ivanović, Nikola V.
AU  - Videnović, Ivan R.
AU  - Spasojević, Djordje
AU  - Konjević, Nikola
PY  - 2022
UR  - https://pubs.rsc.org/en/content/articlelanding/2022/ja/d2ja00109h
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6141
AB  - We present a series of optical emission spectroscopy (OES) measurements of the stable correlation in characteristic features of spectral line shapes of neutral neon and argon, recorded in the Grimm-type plane cathode DC glow discharge (GD) source from two positions: (1) perpendicular to the cathode surface from the end of the discharge, in line with the discharge axis (end-on view) and (2) side-on cathode view, parallel to the cathode surface and perpendicular to the discharge axis, at the position of the maximum external electric field Fmax in the cathode sheath (CS), close to the cathode surface. Side-on view recording enables spatially resolved OES in the CS, where the Stark effect decisively determines the splitting and shifting of line components relative to the unshifted zero-field line. On the other hand, commonly available end-on view spectra recording in standard analytical Grimm-type sources collects integral light emission from the different layers of the discharge, both CS and negative glow (NG). However, distinct Stark components of several Ne I and Ar I lines' splitting and shifting in the CS are preserved as characteristic excessive wings broadening features in the end-on recordings as well. Following spectral measurements of six Ne I and four Ar I lines in a broad range of discharge conditions (pressure, voltage, current) and cathode materials, we report on a sustained correlation coefficient of 1.083 in neon and 1.129 in argon between the side-on recorded components shift Δλs at the position of maximum field Fmax in the CS, and the end-on recorded wings broadening characteristic features shift Δλe. Individual Ne I and Ar I lines' correlation coefficients Δλs/Δλe are reported also. These coefficients can be used to estimate the maximum CS electric field Fmax and the CS thickness dc within reasonable margins of uncertainty in a standard analytical Grimm-type GD source with an end-on view available only.
T2  - Journal of Analytical Atomic Spectrometry
T2  - Journal of Analytical Atomic SpectrometryJ. Anal. At. Spectrom.
T1  - Estimation of the maximum electric field strength in the cathode sheath of a Grimm-type glow discharge by end-on view optical emission spectroscopy in neon and argon
EP  - 1326
IS  - 6
SP  - 1318
VL  - 37
DO  - 10.1039/D2JA00109H
ER  - 

@article{
author = "Nedić, Nikodin V. and Ivanović, Nikola V. and Videnović, Ivan R. and Spasojević, Djordje and Konjević, Nikola",
year = "2022",
abstract = "We present a series of optical emission spectroscopy (OES) measurements of the stable correlation in characteristic features of spectral line shapes of neutral neon and argon, recorded in the Grimm-type plane cathode DC glow discharge (GD) source from two positions: (1) perpendicular to the cathode surface from the end of the discharge, in line with the discharge axis (end-on view) and (2) side-on cathode view, parallel to the cathode surface and perpendicular to the discharge axis, at the position of the maximum external electric field Fmax in the cathode sheath (CS), close to the cathode surface. Side-on view recording enables spatially resolved OES in the CS, where the Stark effect decisively determines the splitting and shifting of line components relative to the unshifted zero-field line. On the other hand, commonly available end-on view spectra recording in standard analytical Grimm-type sources collects integral light emission from the different layers of the discharge, both CS and negative glow (NG). However, distinct Stark components of several Ne I and Ar I lines' splitting and shifting in the CS are preserved as characteristic excessive wings broadening features in the end-on recordings as well. Following spectral measurements of six Ne I and four Ar I lines in a broad range of discharge conditions (pressure, voltage, current) and cathode materials, we report on a sustained correlation coefficient of 1.083 in neon and 1.129 in argon between the side-on recorded components shift Δλs at the position of maximum field Fmax in the CS, and the end-on recorded wings broadening characteristic features shift Δλe. Individual Ne I and Ar I lines' correlation coefficients Δλs/Δλe are reported also. These coefficients can be used to estimate the maximum CS electric field Fmax and the CS thickness dc within reasonable margins of uncertainty in a standard analytical Grimm-type GD source with an end-on view available only.",
journal = "Journal of Analytical Atomic Spectrometry, Journal of Analytical Atomic SpectrometryJ. Anal. At. Spectrom.",
title = "Estimation of the maximum electric field strength in the cathode sheath of a Grimm-type glow discharge by end-on view optical emission spectroscopy in neon and argon",
pages = "1326-1318",
number = "6",
volume = "37",
doi = "10.1039/D2JA00109H"
}

Nedić, N. V., Ivanović, N. V., Videnović, I. R., Spasojević, D.,& Konjević, N.. (2022). Estimation of the maximum electric field strength in the cathode sheath of a Grimm-type glow discharge by end-on view optical emission spectroscopy in neon and argon. in Journal of Analytical Atomic Spectrometry, 37(6), 1318-1326.
https://doi.org/10.1039/D2JA00109H

Nedić NV, Ivanović NV, Videnović IR, Spasojević D, Konjević N. Estimation of the maximum electric field strength in the cathode sheath of a Grimm-type glow discharge by end-on view optical emission spectroscopy in neon and argon. in Journal of Analytical Atomic Spectrometry. 2022;37(6):1318-1326.
doi:10.1039/D2JA00109H .

Nedić, Nikodin V., Ivanović, Nikola V., Videnović, Ivan R., Spasojević, Djordje, Konjević, Nikola, "Estimation of the maximum electric field strength in the cathode sheath of a Grimm-type glow discharge by end-on view optical emission spectroscopy in neon and argon" in Journal of Analytical Atomic Spectrometry, 37, no. 6 (2022):1318-1326,
https://doi.org/10.1039/D2JA00109H . .

TY  - JOUR
AU  - Šuljagić, M.
AU  - Stanković, D.
AU  - Mirković, M.
AU  - Pavlović, V.
AU  - Petronijević, I.
AU  - Jeremić, D.
AU  - Andjelković, L.
PY  - 2022
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6259
AB  - Abstract: Nickel ferrite nanoparticles were synthesized via thermal decomposition of β-diketonato complexes of nickel(II) and iron(III). The mechano-chemical activation of the complex precursors was used to ensure the increase in the reaction activity and consequently reduce thermal decomposition temperature. The prepared sample was thoroughly characterized by X-ray powder diffraction, FT-IR spectroscopy, scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS), and transmission electron microscopy (TEM). X-ray powder diffraction and FT-IR confirmed the spinel phase of the investigated powder. SEM and TEM revealed the ultrafine nature of nanosized polygonal particles, with a pronounced agglomeration effect. The capacity for electrocatalytic applications was examined using cyclic voltammetry (CV) and electrical impedance spectroscopy (EIS). Electrocatalytic measurements pointed out that the addition of 5% of nickel ferrite as a modifier to carbon paste electrode caused a current increase and a decrease of the EIS semicircle. Further increase in the amount of the modifier decreased heterogeneity of the electrode surface and served as excellent sensor for the detection of gallic acid in the concentration range from 1 to 10 µM with the detection limit of 0.27 µM. This unambiguously indicated the significant improvement in electrode transfer rate and better characteristics of the diffusion layer. © 2022, Pleiades Publishing, Ltd.
T2  - Russian Journal of Inorganic Chemistry
T2  - Russian Journal of Inorganic Chemistry
T1  - Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid
EP  - S21
SP  - S13
VL  - 67
DO  - 10.1134/S003602362260201X
ER  - 

@article{
author = "Šuljagić, M. and Stanković, D. and Mirković, M. and Pavlović, V. and Petronijević, I. and Jeremić, D. and Andjelković, L.",
year = "2022",
abstract = "Abstract: Nickel ferrite nanoparticles were synthesized via thermal decomposition of β-diketonato complexes of nickel(II) and iron(III). The mechano-chemical activation of the complex precursors was used to ensure the increase in the reaction activity and consequently reduce thermal decomposition temperature. The prepared sample was thoroughly characterized by X-ray powder diffraction, FT-IR spectroscopy, scanning electron microscopy (SEM) coupled with electron dispersive spectroscopy (EDS), and transmission electron microscopy (TEM). X-ray powder diffraction and FT-IR confirmed the spinel phase of the investigated powder. SEM and TEM revealed the ultrafine nature of nanosized polygonal particles, with a pronounced agglomeration effect. The capacity for electrocatalytic applications was examined using cyclic voltammetry (CV) and electrical impedance spectroscopy (EIS). Electrocatalytic measurements pointed out that the addition of 5% of nickel ferrite as a modifier to carbon paste electrode caused a current increase and a decrease of the EIS semicircle. Further increase in the amount of the modifier decreased heterogeneity of the electrode surface and served as excellent sensor for the detection of gallic acid in the concentration range from 1 to 10 µM with the detection limit of 0.27 µM. This unambiguously indicated the significant improvement in electrode transfer rate and better characteristics of the diffusion layer. © 2022, Pleiades Publishing, Ltd.",
journal = "Russian Journal of Inorganic Chemistry, Russian Journal of Inorganic Chemistry",
title = "Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid",
pages = "S21-S13",
volume = "67",
doi = "10.1134/S003602362260201X"
}

Šuljagić, M., Stanković, D., Mirković, M., Pavlović, V., Petronijević, I., Jeremić, D.,& Andjelković, L.. (2022). Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid. in Russian Journal of Inorganic Chemistry, 67, S13-S21.
https://doi.org/10.1134/S003602362260201X

Šuljagić M, Stanković D, Mirković M, Pavlović V, Petronijević I, Jeremić D, Andjelković L. Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid. in Russian Journal of Inorganic Chemistry. 2022;67:S13-S21.
doi:10.1134/S003602362260201X .

Šuljagić, M., Stanković, D., Mirković, M., Pavlović, V., Petronijević, I., Jeremić, D., Andjelković, L., "Novel Solid-State Approach to Nickel Ferrite Electrocatalyst for the Detection of Gallic Acid" in Russian Journal of Inorganic Chemistry, 67 (2022):S13-S21,
https://doi.org/10.1134/S003602362260201X . .

TY  - JOUR
AU  - Spasojević, Djordje
AU  - Ivanović, Nikola V.
AU  - Nedić, Nikodin V.
AU  - Rajačić, Luka
AU  - Šišović, Nikola M.
AU  - Konjević, Nikola
PY  - 2021
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5989
AB  - We report results of an experimental and theoretical study of complex UV line shapes of Ne II 369.421 nm, Ne II 370.962 nm, Ne II 371.308 nm, and. Ne II 372.711 nm lines in the cathode sheath (CS) region of an abnormal DC glow discharge in pure neon. Two sets of experimental profiles and electric field distributions, one for discharge with tungsten and the other with titanium cathode, were obtained by means of the optical emission spectroscopy (OES) and theoretically studied by the iterative CS kinetic model. It is shown that our theoretical model enables the determination of the most important CS parameters (e.g. the thickness of the CS region, and the theoretical distributions of electric field and gas temperature) and thereupon based accurate theoretical predictions of the experimentally observed profiles of the studied lines.
PB  - Elsevier Ltd
T2  - Advances in Space Research
T1  - Study of UV Ne II line shapes in the cathode sheath of an abnormal glow discharge
DO  - 10.1016/j.asr.2021.11.014
ER  - 

@article{
author = "Spasojević, Djordje and Ivanović, Nikola V. and Nedić, Nikodin V. and Rajačić, Luka and Šišović, Nikola M. and Konjević, Nikola",
year = "2021",
abstract = "We report results of an experimental and theoretical study of complex UV line shapes of Ne II 369.421 nm, Ne II 370.962 nm, Ne II 371.308 nm, and. Ne II 372.711 nm lines in the cathode sheath (CS) region of an abnormal DC glow discharge in pure neon. Two sets of experimental profiles and electric field distributions, one for discharge with tungsten and the other with titanium cathode, were obtained by means of the optical emission spectroscopy (OES) and theoretically studied by the iterative CS kinetic model. It is shown that our theoretical model enables the determination of the most important CS parameters (e.g. the thickness of the CS region, and the theoretical distributions of electric field and gas temperature) and thereupon based accurate theoretical predictions of the experimentally observed profiles of the studied lines.",
publisher = "Elsevier Ltd",
journal = "Advances in Space Research",
title = "Study of UV Ne II line shapes in the cathode sheath of an abnormal glow discharge",
doi = "10.1016/j.asr.2021.11.014"
}

Spasojević, D., Ivanović, N. V., Nedić, N. V., Rajačić, L., Šišović, N. M.,& Konjević, N.. (2021). Study of UV Ne II line shapes in the cathode sheath of an abnormal glow discharge. in Advances in Space Research
Elsevier Ltd..
https://doi.org/10.1016/j.asr.2021.11.014

Spasojević D, Ivanović NV, Nedić NV, Rajačić L, Šišović NM, Konjević N. Study of UV Ne II line shapes in the cathode sheath of an abnormal glow discharge. in Advances in Space Research. 2021;.
doi:10.1016/j.asr.2021.11.014 .

Spasojević, Djordje, Ivanović, Nikola V., Nedić, Nikodin V., Rajačić, Luka, Šišović, Nikola M., Konjević, Nikola, "Study of UV Ne II line shapes in the cathode sheath of an abnormal glow discharge" in Advances in Space Research (2021),
https://doi.org/10.1016/j.asr.2021.11.014 . .