TY  - JOUR
AU  - Tadić, Tamara
AU  - Marković, Bojana
AU  - Vuković, Zorica
AU  - Stefanov, Plamen
AU  - Maksin, Danijela
AU  - Nastasović, Aleksandra
AU  - Onjia, Antonije
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7190
AB  - A novel porous gold polymer composite was prepared by the functionalization of a glycidyl methacrylate-based copolymer (pGME) with ethylene diamine (pGME-en), and activation by gold (pGME-en/Au), in a simple batch adsorption procedure in an acid solution, at room temperature. Detailed characterization of the pGME-en before and after activation was performed. The main focuses of this research were the design of a method that can enable the recovery of gold and the reuse of this multipurpose sorbent as an antimicrobial agent. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analysis pointed out amine groups as the primary binding sites for Au activation, while hydroxyl groups also contributed to the chelation reaction. pGME-en exhibited fast gold adsorption with an adsorption half-time of 5 min and an equilibrium time of 30 min. The maximal adsorption capacity was about 187 mg/g. The analysis of sorption experimental data with a non-linear surface reaction and diffusion-based kinetic models revealed the pseudo-second-order and Avrami model as the best fit, with unambiguous control by liquid film and intra-particle diffusion. The biological activity studies against Staphylococcus aureus, Listeria monocytogenes, Escherichia coli, and Candida albicans revealed moderate activity of pGME-en/Au against different bacterial and fungal species. pGME-en/Au was stable in a saline solution, with a release of approximately 2.3 mg/g after 24 h.
T2  - Metals
T1  - Fast Gold Recovery from Aqueous Solutions and Assessment of Antimicrobial Activities of Novel Gold Composite
VL  - 13
IS  - 11
SP  - 1864
DO  - 10.3390/met13111864
ER  - 

@article{
author = "Tadić, Tamara and Marković, Bojana and Vuković, Zorica and Stefanov, Plamen and Maksin, Danijela and Nastasović, Aleksandra and Onjia, Antonije",
year = "2023",
abstract = "A novel porous gold polymer composite was prepared by the functionalization of a glycidyl methacrylate-based copolymer (pGME) with ethylene diamine (pGME-en), and activation by gold (pGME-en/Au), in a simple batch adsorption procedure in an acid solution, at room temperature. Detailed characterization of the pGME-en before and after activation was performed. The main focuses of this research were the design of a method that can enable the recovery of gold and the reuse of this multipurpose sorbent as an antimicrobial agent. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analysis pointed out amine groups as the primary binding sites for Au activation, while hydroxyl groups also contributed to the chelation reaction. pGME-en exhibited fast gold adsorption with an adsorption half-time of 5 min and an equilibrium time of 30 min. The maximal adsorption capacity was about 187 mg/g. The analysis of sorption experimental data with a non-linear surface reaction and diffusion-based kinetic models revealed the pseudo-second-order and Avrami model as the best fit, with unambiguous control by liquid film and intra-particle diffusion. The biological activity studies against Staphylococcus aureus, Listeria monocytogenes, Escherichia coli, and Candida albicans revealed moderate activity of pGME-en/Au against different bacterial and fungal species. pGME-en/Au was stable in a saline solution, with a release of approximately 2.3 mg/g after 24 h.",
journal = "Metals",
title = "Fast Gold Recovery from Aqueous Solutions and Assessment of Antimicrobial Activities of Novel Gold Composite",
volume = "13",
number = "11",
pages = "1864",
doi = "10.3390/met13111864"
}

Tadić, T., Marković, B., Vuković, Z., Stefanov, P., Maksin, D., Nastasović, A.,& Onjia, A.. (2023). Fast Gold Recovery from Aqueous Solutions and Assessment of Antimicrobial Activities of Novel Gold Composite. in Metals, 13(11), 1864.
https://doi.org/10.3390/met13111864

Tadić T, Marković B, Vuković Z, Stefanov P, Maksin D, Nastasović A, Onjia A. Fast Gold Recovery from Aqueous Solutions and Assessment of Antimicrobial Activities of Novel Gold Composite. in Metals. 2023;13(11):1864.
doi:10.3390/met13111864 .

Tadić, Tamara, Marković, Bojana, Vuković, Zorica, Stefanov, Plamen, Maksin, Danijela, Nastasović, Aleksandra, Onjia, Antonije, "Fast Gold Recovery from Aqueous Solutions and Assessment of Antimicrobial Activities of Novel Gold Composite" in Metals, 13, no. 11 (2023):1864,
https://doi.org/10.3390/met13111864 . .

TY  - JOUR
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Stojadinović, Stevan
AU  - Ilić, Mila
AU  - Došen, Ognjen
AU  - Stefanov, Plamen
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4943
AB  - Spray pyrolysis was used to deposit CeO2–TiO2 coatings on stainless steel substrates. The addition of CeO2 to TiO2 changes morphology of the coatings, causing the surface to become laced and some CeO2 ions are incorporated into TiO2 crystal lattice. Part of CeO2 is highly dispersed on the surface of TiO2. The XPS showed the simultaneous existence of Ce4+ and Ce3+ on coating surface. As the CeO2 content in composites increases from 0.5 to 20%, the band gap decreases from 3.16 to 2.88 eV, respectively. The photoactivities in the degradation of methyl orange and lindane were significantly influenced by the content of Ce in composite. For methyl orange photodegradation, the highest activity had coating with CeO2 content of 2 wt%. In contrast, the activity of coatings in lindane photodegradation gradually decreases as the CeO2 content increases. However, efficiency of CeO2–TiO2 coatings remained satisfactory for application in process of lindane degradation. Lindane conversion at 6 h of irradiation is in the range from 88% for pure TiO2 to 60% for CeO2–TiO2 coating with CeO2 content of 20 wt%. Photodegradation of lindane was enhanced on pure TiO2 sites, while methyl orange degradation is highest on composite CeO2/TiO2 species with CeO2 content of 2 wt%.
PB  - Switzerland: Springer Nature
T2  - Journal of Materials Science: Materials in Electronics
T1  - TiO2–CeO2 composite coatings for photocatalytic degradation of chloropesticide and organic dye
VL  - 33
SP  - 5073
EP  - 5086
DO  - 10.1007/s10854-022-07698-9
ER  - 

@article{
author = "Radić, Nenad and Grbić, Boško and Stojadinović, Stevan and Ilić, Mila and Došen, Ognjen and Stefanov, Plamen",
year = "2022",
abstract = "Spray pyrolysis was used to deposit CeO2–TiO2 coatings on stainless steel substrates. The addition of CeO2 to TiO2 changes morphology of the coatings, causing the surface to become laced and some CeO2 ions are incorporated into TiO2 crystal lattice. Part of CeO2 is highly dispersed on the surface of TiO2. The XPS showed the simultaneous existence of Ce4+ and Ce3+ on coating surface. As the CeO2 content in composites increases from 0.5 to 20%, the band gap decreases from 3.16 to 2.88 eV, respectively. The photoactivities in the degradation of methyl orange and lindane were significantly influenced by the content of Ce in composite. For methyl orange photodegradation, the highest activity had coating with CeO2 content of 2 wt%. In contrast, the activity of coatings in lindane photodegradation gradually decreases as the CeO2 content increases. However, efficiency of CeO2–TiO2 coatings remained satisfactory for application in process of lindane degradation. Lindane conversion at 6 h of irradiation is in the range from 88% for pure TiO2 to 60% for CeO2–TiO2 coating with CeO2 content of 20 wt%. Photodegradation of lindane was enhanced on pure TiO2 sites, while methyl orange degradation is highest on composite CeO2/TiO2 species with CeO2 content of 2 wt%.",
publisher = "Switzerland: Springer Nature",
journal = "Journal of Materials Science: Materials in Electronics",
title = "TiO2–CeO2 composite coatings for photocatalytic degradation of chloropesticide and organic dye",
volume = "33",
pages = "5073-5086",
doi = "10.1007/s10854-022-07698-9"
}

Radić, N., Grbić, B., Stojadinović, S., Ilić, M., Došen, O.,& Stefanov, P.. (2022). TiO2–CeO2 composite coatings for photocatalytic degradation of chloropesticide and organic dye. in Journal of Materials Science: Materials in Electronics
Switzerland: Springer Nature., 33, 5073-5086.
https://doi.org/10.1007/s10854-022-07698-9

Radić N, Grbić B, Stojadinović S, Ilić M, Došen O, Stefanov P. TiO2–CeO2 composite coatings for photocatalytic degradation of chloropesticide and organic dye. in Journal of Materials Science: Materials in Electronics. 2022;33:5073-5086.
doi:10.1007/s10854-022-07698-9 .

Radić, Nenad, Grbić, Boško, Stojadinović, Stevan, Ilić, Mila, Došen, Ognjen, Stefanov, Plamen, "TiO2–CeO2 composite coatings for photocatalytic degradation of chloropesticide and organic dye" in Journal of Materials Science: Materials in Electronics, 33 (2022):5073-5086,
https://doi.org/10.1007/s10854-022-07698-9 . .

TY  - JOUR
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Petrović, Srđan
AU  - Stojadinović, Stevan
AU  - Tadić, Nenad
AU  - Stefanov, Plamen
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3782
AB  - The spray pyrolysis is fast and simple method for deposition of CeO2 – rutile TiO2 coatings on stainless steel substrate. The coatings were deposited on stainless steel substrate and characterized by XRD, AFM, XPS, Raman, DRS and photoactivity test for methyl orange decolorization. Photoactivity of CeO2 – rutile TiO2 coatings increase with increasing CeO2 content up to 5 wt% and further increase of CeO2 content leads to decrease of photoactivity. Improvements of photoactivity originate from close contact between CeO2 and rutile TiO2 particles which create numerous centers able to produce very reactive radical species. Besides, the close contact between the CeO2 and rutile TiO2 provides easier charge transfer facilitating the formation of electron/hole pairs that is a necessary step in the overall photocatalytic process.
PB  - Elsevier
T2  - Physica B: Physics of Condensed Matter
T1  - Effect of cerium oxide doping on the photocatalytic properties of rutile TiO2 films prepared by spray pyrolysis
VL  - 599
SP  - 412544
DO  - 10.1016/j.physb.2020.412544
ER  - 

@article{
author = "Radić, Nenad and Grbić, Boško and Petrović, Srđan and Stojadinović, Stevan and Tadić, Nenad and Stefanov, Plamen",
year = "2020",
abstract = "The spray pyrolysis is fast and simple method for deposition of CeO2 – rutile TiO2 coatings on stainless steel substrate. The coatings were deposited on stainless steel substrate and characterized by XRD, AFM, XPS, Raman, DRS and photoactivity test for methyl orange decolorization. Photoactivity of CeO2 – rutile TiO2 coatings increase with increasing CeO2 content up to 5 wt% and further increase of CeO2 content leads to decrease of photoactivity. Improvements of photoactivity originate from close contact between CeO2 and rutile TiO2 particles which create numerous centers able to produce very reactive radical species. Besides, the close contact between the CeO2 and rutile TiO2 provides easier charge transfer facilitating the formation of electron/hole pairs that is a necessary step in the overall photocatalytic process.",
publisher = "Elsevier",
journal = "Physica B: Physics of Condensed Matter",
title = "Effect of cerium oxide doping on the photocatalytic properties of rutile TiO2 films prepared by spray pyrolysis",
volume = "599",
pages = "412544",
doi = "10.1016/j.physb.2020.412544"
}

Radić, N., Grbić, B., Petrović, S., Stojadinović, S., Tadić, N.,& Stefanov, P.. (2020). Effect of cerium oxide doping on the photocatalytic properties of rutile TiO2 films prepared by spray pyrolysis. in Physica B: Physics of Condensed Matter
Elsevier., 599, 412544.
https://doi.org/10.1016/j.physb.2020.412544

Radić N, Grbić B, Petrović S, Stojadinović S, Tadić N, Stefanov P. Effect of cerium oxide doping on the photocatalytic properties of rutile TiO2 films prepared by spray pyrolysis. in Physica B: Physics of Condensed Matter. 2020;599:412544.
doi:10.1016/j.physb.2020.412544 .

Radić, Nenad, Grbić, Boško, Petrović, Srđan, Stojadinović, Stevan, Tadić, Nenad, Stefanov, Plamen, "Effect of cerium oxide doping on the photocatalytic properties of rutile TiO2 films prepared by spray pyrolysis" in Physica B: Physics of Condensed Matter, 599 (2020):412544,
https://doi.org/10.1016/j.physb.2020.412544 . .

TY  - JOUR
AU  - Stojadinović, Stevan
AU  - Radić, Nenad
AU  - Tadić, Nenad
AU  - Vasilić, Rastko
AU  - Stefanov, Plamen
AU  - Grbić, Boško
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2307
AB  - This paper presents the results of our recent investigation focused on the preparation and possible photocatalytic application of iron doped TiO2 coatings formed by plasma electrolytic oxidation of high purity titanium in electrolyte containing FeSO4. The morphology, phase and elemental composition, and absorption band of the coatings were characterized by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and diffuse reflectance spectroscopy. The photocatalytic activity of coatings was evaluated by measuring the degradation of methyl orange under simulated sunlight conditions. It was found that the addition of iron precursor to electrolyte solution improves the photocatalytic properties of obtained coatings with respect to pure TiO2 coating. The incorporation of iron in TiO2 lattice was identified as the main factor affecting the increase of photocatalytic activity. The highest photocatalytic activity was observed when coatings were processed for 2 min with addition of 1 g/L FeSO4 to electrolyte.
PB  - Springer, Dordrecht
T2  - Journal of Materials Science-Materials in Electronics
T1  - Influence of iron doping on photocatalytic activity of TiO2 coatings formed on titanium by plasma electrolytic oxidation
VL  - 29
IS  - 11
SP  - 9427
EP  - 9434
DO  - 10.1007/s10854-018-8975-6
ER  - 

@article{
author = "Stojadinović, Stevan and Radić, Nenad and Tadić, Nenad and Vasilić, Rastko and Stefanov, Plamen and Grbić, Boško",
year = "2018",
abstract = "This paper presents the results of our recent investigation focused on the preparation and possible photocatalytic application of iron doped TiO2 coatings formed by plasma electrolytic oxidation of high purity titanium in electrolyte containing FeSO4. The morphology, phase and elemental composition, and absorption band of the coatings were characterized by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and diffuse reflectance spectroscopy. The photocatalytic activity of coatings was evaluated by measuring the degradation of methyl orange under simulated sunlight conditions. It was found that the addition of iron precursor to electrolyte solution improves the photocatalytic properties of obtained coatings with respect to pure TiO2 coating. The incorporation of iron in TiO2 lattice was identified as the main factor affecting the increase of photocatalytic activity. The highest photocatalytic activity was observed when coatings were processed for 2 min with addition of 1 g/L FeSO4 to electrolyte.",
publisher = "Springer, Dordrecht",
journal = "Journal of Materials Science-Materials in Electronics",
title = "Influence of iron doping on photocatalytic activity of TiO2 coatings formed on titanium by plasma electrolytic oxidation",
volume = "29",
number = "11",
pages = "9427-9434",
doi = "10.1007/s10854-018-8975-6"
}

Stojadinović, S., Radić, N., Tadić, N., Vasilić, R., Stefanov, P.,& Grbić, B.. (2018). Influence of iron doping on photocatalytic activity of TiO2 coatings formed on titanium by plasma electrolytic oxidation. in Journal of Materials Science-Materials in Electronics
Springer, Dordrecht., 29(11), 9427-9434.
https://doi.org/10.1007/s10854-018-8975-6

Stojadinović S, Radić N, Tadić N, Vasilić R, Stefanov P, Grbić B. Influence of iron doping on photocatalytic activity of TiO2 coatings formed on titanium by plasma electrolytic oxidation. in Journal of Materials Science-Materials in Electronics. 2018;29(11):9427-9434.
doi:10.1007/s10854-018-8975-6 .

Stojadinović, Stevan, Radić, Nenad, Tadić, Nenad, Vasilić, Rastko, Stefanov, Plamen, Grbić, Boško, "Influence of iron doping on photocatalytic activity of TiO2 coatings formed on titanium by plasma electrolytic oxidation" in Journal of Materials Science-Materials in Electronics, 29, no. 11 (2018):9427-9434,
https://doi.org/10.1007/s10854-018-8975-6 . .

TY  - JOUR
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Stojadinović, Stevan
AU  - Vasilić, Rastko
AU  - Petrović, Srđan
AU  - Rožić, Ljiljana
AU  - Stefanov, Plamen
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2259
AB  - Pt-Ba-Al2O3 coatings were obtained by spray pyrolysis deposition on stainless steel foil. The XRD results showed that the coatings consisted from Ba carbonate and Pt (fcc) phases. SEM micrographs demonstrated that the coatings are smooth and compact. The XPS data confirmed that Ba and Pt are in close contact. Pt crystallite size is only slightly influenced by the order of Pt and Ba deposition and the dispersion of Pt is in the narrow range from 28 to 33% for all samples. Catalyst component deposition order affects NOx storage capacity. Simultaneous deposition of Ba and Pt on already formed Al2O3 substrate produces the most efficient catalyst. Pt deposited on top of the Ba layer results in slightly reduced NOx storage capacity, while deposition of Pt on the separated layer with Ba layer on top significantly reduces the ability for NOx storage.
PB  - Elsevier Science Sa, Lausanne
T2  - Thin Solid Films
T1  - Preparation and characterization of Pt-Ba-Al2O3 coatings obtained by spray pyrolysis
VL  - 628
SP  - 7
EP  - 12
DO  - 10.1016/j.tsf.2017.03.007
ER  - 

@article{
author = "Radić, Nenad and Grbić, Boško and Stojadinović, Stevan and Vasilić, Rastko and Petrović, Srđan and Rožić, Ljiljana and Stefanov, Plamen",
year = "2017",
abstract = "Pt-Ba-Al2O3 coatings were obtained by spray pyrolysis deposition on stainless steel foil. The XRD results showed that the coatings consisted from Ba carbonate and Pt (fcc) phases. SEM micrographs demonstrated that the coatings are smooth and compact. The XPS data confirmed that Ba and Pt are in close contact. Pt crystallite size is only slightly influenced by the order of Pt and Ba deposition and the dispersion of Pt is in the narrow range from 28 to 33% for all samples. Catalyst component deposition order affects NOx storage capacity. Simultaneous deposition of Ba and Pt on already formed Al2O3 substrate produces the most efficient catalyst. Pt deposited on top of the Ba layer results in slightly reduced NOx storage capacity, while deposition of Pt on the separated layer with Ba layer on top significantly reduces the ability for NOx storage.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Thin Solid Films",
title = "Preparation and characterization of Pt-Ba-Al2O3 coatings obtained by spray pyrolysis",
volume = "628",
pages = "7-12",
doi = "10.1016/j.tsf.2017.03.007"
}

Radić, N., Grbić, B., Stojadinović, S., Vasilić, R., Petrović, S., Rožić, L.,& Stefanov, P.. (2017). Preparation and characterization of Pt-Ba-Al2O3 coatings obtained by spray pyrolysis. in Thin Solid Films
Elsevier Science Sa, Lausanne., 628, 7-12.
https://doi.org/10.1016/j.tsf.2017.03.007

Radić N, Grbić B, Stojadinović S, Vasilić R, Petrović S, Rožić L, Stefanov P. Preparation and characterization of Pt-Ba-Al2O3 coatings obtained by spray pyrolysis. in Thin Solid Films. 2017;628:7-12.
doi:10.1016/j.tsf.2017.03.007 .

Radić, Nenad, Grbić, Boško, Stojadinović, Stevan, Vasilić, Rastko, Petrović, Srđan, Rožić, Ljiljana, Stefanov, Plamen, "Preparation and characterization of Pt-Ba-Al2O3 coatings obtained by spray pyrolysis" in Thin Solid Films, 628 (2017):7-12,
https://doi.org/10.1016/j.tsf.2017.03.007 . .

TY  - JOUR
AU  - Stefanović, Ivan
AU  - Spirkova, Milena
AU  - Ostojić, Sanja
AU  - Stefanov, Plamen
AU  - Pavlović, Vladimir B.
AU  - Pergal, Marija
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2092
AB  - The aim of this work was to prepare and characterize the series of segmented polyurethane nanocomposites (PUNC) modified with poly(dimethylsiloxane) and based on montmorillonite (Mt) as a nano-filler. alpha,omega-Dihydroxy-poly(propylene oxide)-b-poly(dimethylsiloxane)-b-poly(propylene oxide) macrodiol was used as the soft segment component, while 4,4'-diphenylmethane diisocyanate (MDI) and 1,4-butanediol (BD) were selected as the hard segment components. PUNC were synthesized with different ratio of hard/soft segments. PUNC were morphologically, structurally, thermally, mechanically and surface characterized by XRD, TEM, FTIR, AFM, TGA, DMTA, tensile test, XPS, contact angle, surface free energy (SFE) and water absorption measurements. Added Mt (1 wt%) was completely delaminated and well dispersed in the form of mixed exfoliated/intercalated layers in the polymer matrix, and that PUNC have more pronounced microphase separated morphology, higher thermal stability, superior mechanical features, enhanced surface properties, as well as outstanding hydrophobicity. Due to the improved features, developed polymers can be considered as candidates for materials with specific biomedical applications or as waterproof coatings.
PB  - Elsevier
T2  - Applied Clay Science
T1  - Montmorillonite/poly(urethane-siloxane) nanocomposites: Morphological, thermal, mechanical and surface properties
VL  - 149
SP  - 136
EP  - 146
DO  - 10.1016/j.clay.2017.08.021
ER  - 

@article{
author = "Stefanović, Ivan and Spirkova, Milena and Ostojić, Sanja and Stefanov, Plamen and Pavlović, Vladimir B. and Pergal, Marija",
year = "2017",
abstract = "The aim of this work was to prepare and characterize the series of segmented polyurethane nanocomposites (PUNC) modified with poly(dimethylsiloxane) and based on montmorillonite (Mt) as a nano-filler. alpha,omega-Dihydroxy-poly(propylene oxide)-b-poly(dimethylsiloxane)-b-poly(propylene oxide) macrodiol was used as the soft segment component, while 4,4'-diphenylmethane diisocyanate (MDI) and 1,4-butanediol (BD) were selected as the hard segment components. PUNC were synthesized with different ratio of hard/soft segments. PUNC were morphologically, structurally, thermally, mechanically and surface characterized by XRD, TEM, FTIR, AFM, TGA, DMTA, tensile test, XPS, contact angle, surface free energy (SFE) and water absorption measurements. Added Mt (1 wt%) was completely delaminated and well dispersed in the form of mixed exfoliated/intercalated layers in the polymer matrix, and that PUNC have more pronounced microphase separated morphology, higher thermal stability, superior mechanical features, enhanced surface properties, as well as outstanding hydrophobicity. Due to the improved features, developed polymers can be considered as candidates for materials with specific biomedical applications or as waterproof coatings.",
publisher = "Elsevier",
journal = "Applied Clay Science",
title = "Montmorillonite/poly(urethane-siloxane) nanocomposites: Morphological, thermal, mechanical and surface properties",
volume = "149",
pages = "136-146",
doi = "10.1016/j.clay.2017.08.021"
}

Stefanović, I., Spirkova, M., Ostojić, S., Stefanov, P., Pavlović, V. B.,& Pergal, M.. (2017). Montmorillonite/poly(urethane-siloxane) nanocomposites: Morphological, thermal, mechanical and surface properties. in Applied Clay Science
Elsevier., 149, 136-146.
https://doi.org/10.1016/j.clay.2017.08.021

Stefanović I, Spirkova M, Ostojić S, Stefanov P, Pavlović VB, Pergal M. Montmorillonite/poly(urethane-siloxane) nanocomposites: Morphological, thermal, mechanical and surface properties. in Applied Clay Science. 2017;149:136-146.
doi:10.1016/j.clay.2017.08.021 .

Stefanović, Ivan, Spirkova, Milena, Ostojić, Sanja, Stefanov, Plamen, Pavlović, Vladimir B., Pergal, Marija, "Montmorillonite/poly(urethane-siloxane) nanocomposites: Morphological, thermal, mechanical and surface properties" in Applied Clay Science, 149 (2017):136-146,
https://doi.org/10.1016/j.clay.2017.08.021 . .

TY  - CONF
AU  - Stefanović, Ivan
AU  - Stefanov, Plamen
AU  - Pavlović, Vladimir
AU  - Pergal, Marija
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5739
AB  - Series of poly(urethane-siloxane) nanocomposites (PUSN) was synthesized based on 4,4'-methylenediphenyldiisocyanate and 1,4-butanediol as the comonomers of the hard segments and 
poly(propyleneoxide)-b-poly(dimethylsiloxane)-b-poly(propyleneoxide) as the part of the soft 
segments. The effect of the addition of nanoparticles of organomodified clay (Cloisite 30B*) on 
thermal, mechanical, surface and morphological properties of these PUSNs was investigated. 
TGA analysis confirmed that the addition of clay nanoparticles in the amount of only 1 wt. % 
leads to an improvement C. Modulus of elasticity and tensile strength were also increased after the reinforcement of poly(urethane-siloxane) matrix with clay nanoparticles. XPS analysis confirmed the presence of a large quantity of Si atomon the surface of the films, which is why these PUSNs exhibit extremely high surface hydrophobicity. TEM analysis revealed homogeneous dispersion of clay nanoparticles and existance of mixed intercalary-exfoliated morphology within the structure of PUSNs.
PB  - Serbian Chemical Society
C3  - Book of Abstracts - 4th Conference of Young Chemists of Serbia, November 5, 2016, Belgrade, Serbia
T1  - Effects of organically modified clay nanoparticles on the properties of poly(urethane-siloxane) nanocomposites
T1  - Uticaj organski modifikovanih naničestica gline na svojstva  poli(uretan-siloksanskih) nanokompozita
SP  - 12
EP  - 12
UR  - https://hdl.handle.net/21.15107/rcub_cer_5739
ER  - 

@conference{
author = "Stefanović, Ivan and Stefanov, Plamen and Pavlović, Vladimir and Pergal, Marija",
year = "2016",
abstract = "Series of poly(urethane-siloxane) nanocomposites (PUSN) was synthesized based on 4,4'-methylenediphenyldiisocyanate and 1,4-butanediol as the comonomers of the hard segments and 
poly(propyleneoxide)-b-poly(dimethylsiloxane)-b-poly(propyleneoxide) as the part of the soft 
segments. The effect of the addition of nanoparticles of organomodified clay (Cloisite 30B*) on 
thermal, mechanical, surface and morphological properties of these PUSNs was investigated. 
TGA analysis confirmed that the addition of clay nanoparticles in the amount of only 1 wt. % 
leads to an improvement C. Modulus of elasticity and tensile strength were also increased after the reinforcement of poly(urethane-siloxane) matrix with clay nanoparticles. XPS analysis confirmed the presence of a large quantity of Si atomon the surface of the films, which is why these PUSNs exhibit extremely high surface hydrophobicity. TEM analysis revealed homogeneous dispersion of clay nanoparticles and existance of mixed intercalary-exfoliated morphology within the structure of PUSNs.",
publisher = "Serbian Chemical Society",
journal = "Book of Abstracts - 4th Conference of Young Chemists of Serbia, November 5, 2016, Belgrade, Serbia",
title = "Effects of organically modified clay nanoparticles on the properties of poly(urethane-siloxane) nanocomposites, Uticaj organski modifikovanih naničestica gline na svojstva  poli(uretan-siloksanskih) nanokompozita",
pages = "12-12",
url = "https://hdl.handle.net/21.15107/rcub_cer_5739"
}

Stefanović, I., Stefanov, P., Pavlović, V.,& Pergal, M.. (2016). Effects of organically modified clay nanoparticles on the properties of poly(urethane-siloxane) nanocomposites. in Book of Abstracts - 4th Conference of Young Chemists of Serbia, November 5, 2016, Belgrade, Serbia
Serbian Chemical Society., 12-12.
https://hdl.handle.net/21.15107/rcub_cer_5739

Stefanović I, Stefanov P, Pavlović V, Pergal M. Effects of organically modified clay nanoparticles on the properties of poly(urethane-siloxane) nanocomposites. in Book of Abstracts - 4th Conference of Young Chemists of Serbia, November 5, 2016, Belgrade, Serbia. 2016;:12-12.
https://hdl.handle.net/21.15107/rcub_cer_5739 .

Stefanović, Ivan, Stefanov, Plamen, Pavlović, Vladimir, Pergal, Marija, "Effects of organically modified clay nanoparticles on the properties of poly(urethane-siloxane) nanocomposites" in Book of Abstracts - 4th Conference of Young Chemists of Serbia, November 5, 2016, Belgrade, Serbia (2016):12-12,
https://hdl.handle.net/21.15107/rcub_cer_5739 .

TY  - JOUR
AU  - Stojadinović, Stevan
AU  - Vasilić, Rastko
AU  - Radić, Nenad
AU  - Tadić, Nenad
AU  - Stefanov, Plamen
AU  - Grbić, Boško
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1939
AB  - Tungsten doped Al2O3 /ZnO coatings are formed by plasma electrolytic oxidation of aluminum substrate in supporting electrolyte (0.1 M boric acid + 0.05 M borax + 2 g/L ZnO) with addition of different concentrations of Na2WO4 center dot 2H(2)O. The morphology, crystal structure, chemical composition, and light absorption characteristics of formed surface coatings are investigated. The X-ray diffraction and X-ray photoelectron spectroscopy results indicate that formed surface coatings consist of alpha and gamma phase of A(2)O(3), ZnO, metallic tungsten and WO3. Obtained results showed that incorporated tungsten does not have any influence on the absorption spectra of Al2O3/ZnO coatings, which showed invariable band edge at about 385 nm. The photocatalytic activity of undoped and tungsten doped Al2O3 /ZnO coatings is estimated by the photodegradation of methyl orange. The photocatalytic activity of tungsten doped A(2)O(3)/ZnO coatings is higher thanof undoped Al2O3 /ZnO coatings; the best photocatalytic activity is ascribed to coatings formed in supporting electrolyte with addition of 0.3 g/L Na2WO4 center dot 2H(2)O. Tungsten in A(2)O(3)/ZnO coatings acts as a charge trap, thus reducing the recombination rate of photogenerated electron-hole pairs. The results of PL measurements are in agreement with photocatalytic activity. Declining PL intensity corresponds to increasing photocatalytic activity of the coatings, indicating slower recombination of electron-hole pairs.
PB  - Elsevier
T2  - Applied Surface Science
T1  - The formation of tungsten doped Al2O3/ZnO coatings on aluminum by plasma electrolytic oxidation and their application in photocatalysis
VL  - 377
SP  - 37
EP  - 43
DO  - 10.1016/j.apsusc.2016.03.104
ER  - 

@article{
author = "Stojadinović, Stevan and Vasilić, Rastko and Radić, Nenad and Tadić, Nenad and Stefanov, Plamen and Grbić, Boško",
year = "2016",
abstract = "Tungsten doped Al2O3 /ZnO coatings are formed by plasma electrolytic oxidation of aluminum substrate in supporting electrolyte (0.1 M boric acid + 0.05 M borax + 2 g/L ZnO) with addition of different concentrations of Na2WO4 center dot 2H(2)O. The morphology, crystal structure, chemical composition, and light absorption characteristics of formed surface coatings are investigated. The X-ray diffraction and X-ray photoelectron spectroscopy results indicate that formed surface coatings consist of alpha and gamma phase of A(2)O(3), ZnO, metallic tungsten and WO3. Obtained results showed that incorporated tungsten does not have any influence on the absorption spectra of Al2O3/ZnO coatings, which showed invariable band edge at about 385 nm. The photocatalytic activity of undoped and tungsten doped Al2O3 /ZnO coatings is estimated by the photodegradation of methyl orange. The photocatalytic activity of tungsten doped A(2)O(3)/ZnO coatings is higher thanof undoped Al2O3 /ZnO coatings; the best photocatalytic activity is ascribed to coatings formed in supporting electrolyte with addition of 0.3 g/L Na2WO4 center dot 2H(2)O. Tungsten in A(2)O(3)/ZnO coatings acts as a charge trap, thus reducing the recombination rate of photogenerated electron-hole pairs. The results of PL measurements are in agreement with photocatalytic activity. Declining PL intensity corresponds to increasing photocatalytic activity of the coatings, indicating slower recombination of electron-hole pairs.",
publisher = "Elsevier",
journal = "Applied Surface Science",
title = "The formation of tungsten doped Al2O3/ZnO coatings on aluminum by plasma electrolytic oxidation and their application in photocatalysis",
volume = "377",
pages = "37-43",
doi = "10.1016/j.apsusc.2016.03.104"
}

Stojadinović, S., Vasilić, R., Radić, N., Tadić, N., Stefanov, P.,& Grbić, B.. (2016). The formation of tungsten doped Al2O3/ZnO coatings on aluminum by plasma electrolytic oxidation and their application in photocatalysis. in Applied Surface Science
Elsevier., 377, 37-43.
https://doi.org/10.1016/j.apsusc.2016.03.104

Stojadinović S, Vasilić R, Radić N, Tadić N, Stefanov P, Grbić B. The formation of tungsten doped Al2O3/ZnO coatings on aluminum by plasma electrolytic oxidation and their application in photocatalysis. in Applied Surface Science. 2016;377:37-43.
doi:10.1016/j.apsusc.2016.03.104 .

Stojadinović, Stevan, Vasilić, Rastko, Radić, Nenad, Tadić, Nenad, Stefanov, Plamen, Grbić, Boško, "The formation of tungsten doped Al2O3/ZnO coatings on aluminum by plasma electrolytic oxidation and their application in photocatalysis" in Applied Surface Science, 377 (2016):37-43,
https://doi.org/10.1016/j.apsusc.2016.03.104 . .

TY  - JOUR
AU  - Stojadinović, Stevan
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Maletić, Slavica
AU  - Stefanov, Plamen
AU  - Pacevski, Aleksandar
AU  - Vasilić, Rastko
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2034
AB  - In this paper, we used plasma electrolytic oxidation (PEO) of titanium in water solution containing 10 g/L Na3PO4 center dot 12H(2)O + 2 g/L Eu2O3 powder for preparation of TiO2:Eu3+ coatings. The surfaces of obtained coatings exhibit a typical PEO porous structure. The energy dispersive X-ray spectroscopy analysis showed that the coatings are mainly composed of Ti, O, P, and Eu; it is observed that Eu content in the coatings increases with PEO time. The X-ray diffraction analysis indicated that the coatings are crystallized and composed of anatase and rutile TiO2 phases, with anatase being the dominant one. X-ray photoelectron spectroscopy revealed that Ti 2p spin-orbit components of TiO2:Eu3+ coatings are shifted towards higher binding energy, with respect to pure TiO2 coatings, suggesting that Eu3+ ions are incorporated into TiO2 lattice. Diffuse reflectance spectroscopy showed that TiO2:Eu3+ coatings exhibit evident red shift with respect to the pure TiO2 coatings. Photoluminescence (PL) emission spectra of TiO2:Eu3+ coatings are characterized by sharp emission bands in orange-red region ascribed to f-f transitions of Eu3+ ions from excited level D-5(0) to lower levels F-7(J) (J=0, 1, 2, 3, and 4). The excitation PL spectra of TiO2:Eu3+ coatings can be divided into two regions: the broad band region from 250 nm to 350 nm associated with charge transfer state of Eu3+ and the series of sharp peaks in the range from 350 nm to 550 rim corresponding to direct excitation of the Eu3+ ions. It is observed that the intensity of peaks in excitation and emission PL spectra increases with the concentration of Eu3+, but the peak positions remain practically unchanged. The ratio of PL emission for electric and magnetic dipole transitions indicates highly asymmetric environment around Eu3+ ions. The photocatalytic activity (PA) of TiO2:Eu3+ coatings is evaluated by measuring the photodegradation of methyl orange under simulated sunlight conditions. It is shown that PEO time, i.e., the amount of Eu3+ incorporated into coatings is an important factor affecting PA; TiO2:Eu3+ coating formed after 1 min of PEO time showed the highest PA.
PB  - Elsevier
T2  - Applied Surface Science
T1  - Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation
VL  - 370
SP  - 218
EP  - 228
DO  - 10.1016/j.apsusc.2016.02.131
ER  - 

@article{
author = "Stojadinović, Stevan and Radić, Nenad and Grbić, Boško and Maletić, Slavica and Stefanov, Plamen and Pacevski, Aleksandar and Vasilić, Rastko",
year = "2016",
abstract = "In this paper, we used plasma electrolytic oxidation (PEO) of titanium in water solution containing 10 g/L Na3PO4 center dot 12H(2)O + 2 g/L Eu2O3 powder for preparation of TiO2:Eu3+ coatings. The surfaces of obtained coatings exhibit a typical PEO porous structure. The energy dispersive X-ray spectroscopy analysis showed that the coatings are mainly composed of Ti, O, P, and Eu; it is observed that Eu content in the coatings increases with PEO time. The X-ray diffraction analysis indicated that the coatings are crystallized and composed of anatase and rutile TiO2 phases, with anatase being the dominant one. X-ray photoelectron spectroscopy revealed that Ti 2p spin-orbit components of TiO2:Eu3+ coatings are shifted towards higher binding energy, with respect to pure TiO2 coatings, suggesting that Eu3+ ions are incorporated into TiO2 lattice. Diffuse reflectance spectroscopy showed that TiO2:Eu3+ coatings exhibit evident red shift with respect to the pure TiO2 coatings. Photoluminescence (PL) emission spectra of TiO2:Eu3+ coatings are characterized by sharp emission bands in orange-red region ascribed to f-f transitions of Eu3+ ions from excited level D-5(0) to lower levels F-7(J) (J=0, 1, 2, 3, and 4). The excitation PL spectra of TiO2:Eu3+ coatings can be divided into two regions: the broad band region from 250 nm to 350 nm associated with charge transfer state of Eu3+ and the series of sharp peaks in the range from 350 nm to 550 rim corresponding to direct excitation of the Eu3+ ions. It is observed that the intensity of peaks in excitation and emission PL spectra increases with the concentration of Eu3+, but the peak positions remain practically unchanged. The ratio of PL emission for electric and magnetic dipole transitions indicates highly asymmetric environment around Eu3+ ions. The photocatalytic activity (PA) of TiO2:Eu3+ coatings is evaluated by measuring the photodegradation of methyl orange under simulated sunlight conditions. It is shown that PEO time, i.e., the amount of Eu3+ incorporated into coatings is an important factor affecting PA; TiO2:Eu3+ coating formed after 1 min of PEO time showed the highest PA.",
publisher = "Elsevier",
journal = "Applied Surface Science",
title = "Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation",
volume = "370",
pages = "218-228",
doi = "10.1016/j.apsusc.2016.02.131"
}

Stojadinović, S., Radić, N., Grbić, B., Maletić, S., Stefanov, P., Pacevski, A.,& Vasilić, R.. (2016). Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation. in Applied Surface Science
Elsevier., 370, 218-228.
https://doi.org/10.1016/j.apsusc.2016.02.131

Stojadinović S, Radić N, Grbić B, Maletić S, Stefanov P, Pacevski A, Vasilić R. Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation. in Applied Surface Science. 2016;370:218-228.
doi:10.1016/j.apsusc.2016.02.131 .

Stojadinović, Stevan, Radić, Nenad, Grbić, Boško, Maletić, Slavica, Stefanov, Plamen, Pacevski, Aleksandar, Vasilić, Rastko, "Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation" in Applied Surface Science, 370 (2016):218-228,
https://doi.org/10.1016/j.apsusc.2016.02.131 . .

TY  - JOUR
AU  - Stojadinović, Stevan
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Maletić, Slavica
AU  - Stefanov, Plamen
AU  - Pacevski, Aleksandar
AU  - Vasilić, Rastko
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4320
AB  - In this paper, we used plasma electrolytic oxidation (PEO) of titanium in water solution containing 10 g/L Na3PO4 center dot 12H(2)O + 2 g/L Eu2O3 powder for preparation of TiO2:Eu3+ coatings. The surfaces of obtained coatings exhibit a typical PEO porous structure. The energy dispersive X-ray spectroscopy analysis showed that the coatings are mainly composed of Ti, O, P, and Eu; it is observed that Eu content in the coatings increases with PEO time. The X-ray diffraction analysis indicated that the coatings are crystallized and composed of anatase and rutile TiO2 phases, with anatase being the dominant one. X-ray photoelectron spectroscopy revealed that Ti 2p spin-orbit components of TiO2:Eu3+ coatings are shifted towards higher binding energy, with respect to pure TiO2 coatings, suggesting that Eu3+ ions are incorporated into TiO2 lattice. Diffuse reflectance spectroscopy showed that TiO2:Eu3+ coatings exhibit evident red shift with respect to the pure TiO2 coatings. Photoluminescence (PL) emission spectra of TiO2:Eu3+ coatings are characterized by sharp emission bands in orange-red region ascribed to f-f transitions of Eu3+ ions from excited level D-5(0) to lower levels F-7(J) (J=0, 1, 2, 3, and 4). The excitation PL spectra of TiO2:Eu3+ coatings can be divided into two regions: the broad band region from 250 nm to 350 nm associated with charge transfer state of Eu3+ and the series of sharp peaks in the range from 350 nm to 550 rim corresponding to direct excitation of the Eu3+ ions. It is observed that the intensity of peaks in excitation and emission PL spectra increases with the concentration of Eu3+, but the peak positions remain practically unchanged. The ratio of PL emission for electric and magnetic dipole transitions indicates highly asymmetric environment around Eu3+ ions. The photocatalytic activity (PA) of TiO2:Eu3+ coatings is evaluated by measuring the photodegradation of methyl orange under simulated sunlight conditions. It is shown that PEO time, i.e., the amount of Eu3+ incorporated into coatings is an important factor affecting PA; TiO2:Eu3+ coating formed after 1 min of PEO time showed the highest PA.
PB  - Elsevier
T2  - Applied Surface Science
T1  - Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation
VL  - 370
SP  - 218
EP  - 228
DO  - 10.1016/j.apsusc.2016.02.131
ER  - 

@article{
author = "Stojadinović, Stevan and Radić, Nenad and Grbić, Boško and Maletić, Slavica and Stefanov, Plamen and Pacevski, Aleksandar and Vasilić, Rastko",
year = "2016",
abstract = "In this paper, we used plasma electrolytic oxidation (PEO) of titanium in water solution containing 10 g/L Na3PO4 center dot 12H(2)O + 2 g/L Eu2O3 powder for preparation of TiO2:Eu3+ coatings. The surfaces of obtained coatings exhibit a typical PEO porous structure. The energy dispersive X-ray spectroscopy analysis showed that the coatings are mainly composed of Ti, O, P, and Eu; it is observed that Eu content in the coatings increases with PEO time. The X-ray diffraction analysis indicated that the coatings are crystallized and composed of anatase and rutile TiO2 phases, with anatase being the dominant one. X-ray photoelectron spectroscopy revealed that Ti 2p spin-orbit components of TiO2:Eu3+ coatings are shifted towards higher binding energy, with respect to pure TiO2 coatings, suggesting that Eu3+ ions are incorporated into TiO2 lattice. Diffuse reflectance spectroscopy showed that TiO2:Eu3+ coatings exhibit evident red shift with respect to the pure TiO2 coatings. Photoluminescence (PL) emission spectra of TiO2:Eu3+ coatings are characterized by sharp emission bands in orange-red region ascribed to f-f transitions of Eu3+ ions from excited level D-5(0) to lower levels F-7(J) (J=0, 1, 2, 3, and 4). The excitation PL spectra of TiO2:Eu3+ coatings can be divided into two regions: the broad band region from 250 nm to 350 nm associated with charge transfer state of Eu3+ and the series of sharp peaks in the range from 350 nm to 550 rim corresponding to direct excitation of the Eu3+ ions. It is observed that the intensity of peaks in excitation and emission PL spectra increases with the concentration of Eu3+, but the peak positions remain practically unchanged. The ratio of PL emission for electric and magnetic dipole transitions indicates highly asymmetric environment around Eu3+ ions. The photocatalytic activity (PA) of TiO2:Eu3+ coatings is evaluated by measuring the photodegradation of methyl orange under simulated sunlight conditions. It is shown that PEO time, i.e., the amount of Eu3+ incorporated into coatings is an important factor affecting PA; TiO2:Eu3+ coating formed after 1 min of PEO time showed the highest PA.",
publisher = "Elsevier",
journal = "Applied Surface Science",
title = "Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation",
volume = "370",
pages = "218-228",
doi = "10.1016/j.apsusc.2016.02.131"
}

Stojadinović, S., Radić, N., Grbić, B., Maletić, S., Stefanov, P., Pacevski, A.,& Vasilić, R.. (2016). Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation. in Applied Surface Science
Elsevier., 370, 218-228.
https://doi.org/10.1016/j.apsusc.2016.02.131

Stojadinović S, Radić N, Grbić B, Maletić S, Stefanov P, Pacevski A, Vasilić R. Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation. in Applied Surface Science. 2016;370:218-228.
doi:10.1016/j.apsusc.2016.02.131 .

Stojadinović, Stevan, Radić, Nenad, Grbić, Boško, Maletić, Slavica, Stefanov, Plamen, Pacevski, Aleksandar, Vasilić, Rastko, "Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation" in Applied Surface Science, 370 (2016):218-228,
https://doi.org/10.1016/j.apsusc.2016.02.131 . .

TY  - JOUR
AU  - Stojadinović, Stevan
AU  - Tadić, Nenad
AU  - Radić, Nenad
AU  - Stefanov, Plamen
AU  - Grbić, Boško
AU  - Vasilić, Rastko
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1817
AB  - This article reports on properties of oxide films obtained by anodization of niobium in phosphoric acid before and after the dielectric breakdown. Weak anodic luminescence of barrier oxide films formed during the anodization of niobium is correlated to the existence of morphological defects in the oxide layer. Small sized sparks generated by dielectric breakdown of formed oxide film cause rapid increase of luminescence intensity. The luminescence spectrum of obtained films on niobium under spark discharging is composed of continuum radiation and spectral lines caused by electronic spark discharging transitions in oxygen and hydrogen atoms. Oxide films formed before the breakdown are amorphous, while after the breakdown oxide films are partly crystalline and mainly composed of Nb2O5 hexagonal phase. The photocatalytic activity of obtained oxide films after the breakdown was investigated by monitoring the degradation of methyl orange. Increase of the photocatalytic activity with time is related to an increase of oxygen vacancy defects in oxide films formed during the process. Also, higher concentration of oxygen vacancy defects in oxide films results in higher photoluminescence intensity.
PB  - Elsevier
T2  - Applied Surface Science
T1  - Anodic luminescence, structural, photoluminescent, and photocatalytic properties of anodic oxide films grown on niobium in phosphoric acid
VL  - 355
SP  - 912
EP  - 920
DO  - 10.1016/j.apsusc.2015.07.174
ER  - 

@article{
author = "Stojadinović, Stevan and Tadić, Nenad and Radić, Nenad and Stefanov, Plamen and Grbić, Boško and Vasilić, Rastko",
year = "2015",
abstract = "This article reports on properties of oxide films obtained by anodization of niobium in phosphoric acid before and after the dielectric breakdown. Weak anodic luminescence of barrier oxide films formed during the anodization of niobium is correlated to the existence of morphological defects in the oxide layer. Small sized sparks generated by dielectric breakdown of formed oxide film cause rapid increase of luminescence intensity. The luminescence spectrum of obtained films on niobium under spark discharging is composed of continuum radiation and spectral lines caused by electronic spark discharging transitions in oxygen and hydrogen atoms. Oxide films formed before the breakdown are amorphous, while after the breakdown oxide films are partly crystalline and mainly composed of Nb2O5 hexagonal phase. The photocatalytic activity of obtained oxide films after the breakdown was investigated by monitoring the degradation of methyl orange. Increase of the photocatalytic activity with time is related to an increase of oxygen vacancy defects in oxide films formed during the process. Also, higher concentration of oxygen vacancy defects in oxide films results in higher photoluminescence intensity.",
publisher = "Elsevier",
journal = "Applied Surface Science",
title = "Anodic luminescence, structural, photoluminescent, and photocatalytic properties of anodic oxide films grown on niobium in phosphoric acid",
volume = "355",
pages = "912-920",
doi = "10.1016/j.apsusc.2015.07.174"
}

Stojadinović, S., Tadić, N., Radić, N., Stefanov, P., Grbić, B.,& Vasilić, R.. (2015). Anodic luminescence, structural, photoluminescent, and photocatalytic properties of anodic oxide films grown on niobium in phosphoric acid. in Applied Surface Science
Elsevier., 355, 912-920.
https://doi.org/10.1016/j.apsusc.2015.07.174

Stojadinović S, Tadić N, Radić N, Stefanov P, Grbić B, Vasilić R. Anodic luminescence, structural, photoluminescent, and photocatalytic properties of anodic oxide films grown on niobium in phosphoric acid. in Applied Surface Science. 2015;355:912-920.
doi:10.1016/j.apsusc.2015.07.174 .

Stojadinović, Stevan, Tadić, Nenad, Radić, Nenad, Stefanov, Plamen, Grbić, Boško, Vasilić, Rastko, "Anodic luminescence, structural, photoluminescent, and photocatalytic properties of anodic oxide films grown on niobium in phosphoric acid" in Applied Surface Science, 355 (2015):912-920,
https://doi.org/10.1016/j.apsusc.2015.07.174 . .

TY  - JOUR
AU  - Grbić, Boško
AU  - Radić, Nenad
AU  - Stojadinović, Stevan
AU  - Vasilić, Rastko
AU  - Dohcevic-Mitrovic, Zorana
AU  - Šaponjić, Zoran
AU  - Stefanov, Plamen
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1479
AB  - TiO2/WO3 composites supported on a stainless steel foil were prepared by the spray pyrolysis technique. Content of WO3 was gradually increased from 1 wt% to 100 wt.%, while the coating thickness was limited to about 1 pm. The coatings were characterized by X-ray diffraction, scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy. The photocatalytic activity of obtained coatings was investigated by degradation of methyl orange, used as model pollutant. The results show that with increasing WO3 content up to 10 wt.% photoactivity increases as result of better charge separation that could effectively prevent the recombination of photogenerated electrons and holes. Further increase of WO3 content led to decrease of photoactivity.
PB  - Elsevier
T2  - Surface and Coatings Technology
T1  - TiO2/WO3 photocatalytic composite coatings prepared by spray pyrolysis
VL  - 258
SP  - 763
EP  - 771
DO  - 10.1016/j.surfcoat.2014.07.082
ER  - 

@article{
author = "Grbić, Boško and Radić, Nenad and Stojadinović, Stevan and Vasilić, Rastko and Dohcevic-Mitrovic, Zorana and Šaponjić, Zoran and Stefanov, Plamen",
year = "2014",
abstract = "TiO2/WO3 composites supported on a stainless steel foil were prepared by the spray pyrolysis technique. Content of WO3 was gradually increased from 1 wt% to 100 wt.%, while the coating thickness was limited to about 1 pm. The coatings were characterized by X-ray diffraction, scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy. The photocatalytic activity of obtained coatings was investigated by degradation of methyl orange, used as model pollutant. The results show that with increasing WO3 content up to 10 wt.% photoactivity increases as result of better charge separation that could effectively prevent the recombination of photogenerated electrons and holes. Further increase of WO3 content led to decrease of photoactivity.",
publisher = "Elsevier",
journal = "Surface and Coatings Technology",
title = "TiO2/WO3 photocatalytic composite coatings prepared by spray pyrolysis",
volume = "258",
pages = "763-771",
doi = "10.1016/j.surfcoat.2014.07.082"
}

Grbić, B., Radić, N., Stojadinović, S., Vasilić, R., Dohcevic-Mitrovic, Z., Šaponjić, Z.,& Stefanov, P.. (2014). TiO2/WO3 photocatalytic composite coatings prepared by spray pyrolysis. in Surface and Coatings Technology
Elsevier., 258, 763-771.
https://doi.org/10.1016/j.surfcoat.2014.07.082

Grbić B, Radić N, Stojadinović S, Vasilić R, Dohcevic-Mitrovic Z, Šaponjić Z, Stefanov P. TiO2/WO3 photocatalytic composite coatings prepared by spray pyrolysis. in Surface and Coatings Technology. 2014;258:763-771.
doi:10.1016/j.surfcoat.2014.07.082 .

Grbić, Boško, Radić, Nenad, Stojadinović, Stevan, Vasilić, Rastko, Dohcevic-Mitrovic, Zorana, Šaponjić, Zoran, Stefanov, Plamen, "TiO2/WO3 photocatalytic composite coatings prepared by spray pyrolysis" in Surface and Coatings Technology, 258 (2014):763-771,
https://doi.org/10.1016/j.surfcoat.2014.07.082 . .

TY  - JOUR
AU  - Dostanić, Jasmina
AU  - Grbić, Boško
AU  - Radić, Nenad
AU  - Stefanov, Plamen
AU  - Šaponjić, Zoran
AU  - Buha, Jelena
AU  - Mijin, Dušan
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/997
AB  - In this study, the feasibility of preparing porous TiO2 films on a stainless steel substrate from a hydrothermally prepared colloidal TiO2 solution by the spray pyrolysis technique is presented. The prepared samples were annealed at different temperatures and characterized by the XPS, XRD and SEM techniques, porosimetry and specific surface area measurements. The photocatalytic activities of the resulting films were evaluated by measuring the degradation of an azo pyridone dye, used as model pollutant, under simulated sunlight conditions. The relationships between the structural and morphological characteristics of the TiO2 films and their photoactivity were observed. It was found that the photoactivity was markedly dependent on the annealing temperature. On increasing the calcination temperature from 500 degrees C to 700 degrees C, the crystallite size and the rutile content increased, whereas the specific surface area and the rate of photodegradation decreased. Calcination at 700 degrees C resulted in a completely loss of photoactivity, due to the partial transformation of anatase to rutile phase, the increased crystallite size and decreased specific surface area. Specific activity (per unit of mass and per unit of surface area) was lowered within thicker films, pointing out significance of transport phenomena through porous films (the transport of dye and the transmittance of light as immaterial reagent). Based on the obtained results, the spray pyrolysis method appears to be a good choice for the preparation of photocatalytically active TiO2 films for the removal of dye pollutants.
PB  - Elsevier Science Sa, Lausanne
T2  - Chemical Engineering Journal
T1  - Photodegradation of an azo pyridone dye using TiO2 films prepared by the spray pyrolysis method
VL  - 180
SP  - 57
EP  - 65
DO  - 10.1016/j.cej.2011.10.100
ER  - 

@article{
author = "Dostanić, Jasmina and Grbić, Boško and Radić, Nenad and Stefanov, Plamen and Šaponjić, Zoran and Buha, Jelena and Mijin, Dušan",
year = "2012",
abstract = "In this study, the feasibility of preparing porous TiO2 films on a stainless steel substrate from a hydrothermally prepared colloidal TiO2 solution by the spray pyrolysis technique is presented. The prepared samples were annealed at different temperatures and characterized by the XPS, XRD and SEM techniques, porosimetry and specific surface area measurements. The photocatalytic activities of the resulting films were evaluated by measuring the degradation of an azo pyridone dye, used as model pollutant, under simulated sunlight conditions. The relationships between the structural and morphological characteristics of the TiO2 films and their photoactivity were observed. It was found that the photoactivity was markedly dependent on the annealing temperature. On increasing the calcination temperature from 500 degrees C to 700 degrees C, the crystallite size and the rutile content increased, whereas the specific surface area and the rate of photodegradation decreased. Calcination at 700 degrees C resulted in a completely loss of photoactivity, due to the partial transformation of anatase to rutile phase, the increased crystallite size and decreased specific surface area. Specific activity (per unit of mass and per unit of surface area) was lowered within thicker films, pointing out significance of transport phenomena through porous films (the transport of dye and the transmittance of light as immaterial reagent). Based on the obtained results, the spray pyrolysis method appears to be a good choice for the preparation of photocatalytically active TiO2 films for the removal of dye pollutants.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Chemical Engineering Journal",
title = "Photodegradation of an azo pyridone dye using TiO2 films prepared by the spray pyrolysis method",
volume = "180",
pages = "57-65",
doi = "10.1016/j.cej.2011.10.100"
}

Dostanić, J., Grbić, B., Radić, N., Stefanov, P., Šaponjić, Z., Buha, J.,& Mijin, D.. (2012). Photodegradation of an azo pyridone dye using TiO2 films prepared by the spray pyrolysis method. in Chemical Engineering Journal
Elsevier Science Sa, Lausanne., 180, 57-65.
https://doi.org/10.1016/j.cej.2011.10.100

Dostanić J, Grbić B, Radić N, Stefanov P, Šaponjić Z, Buha J, Mijin D. Photodegradation of an azo pyridone dye using TiO2 films prepared by the spray pyrolysis method. in Chemical Engineering Journal. 2012;180:57-65.
doi:10.1016/j.cej.2011.10.100 .

Dostanić, Jasmina, Grbić, Boško, Radić, Nenad, Stefanov, Plamen, Šaponjić, Zoran, Buha, Jelena, Mijin, Dušan, "Photodegradation of an azo pyridone dye using TiO2 films prepared by the spray pyrolysis method" in Chemical Engineering Journal, 180 (2012):57-65,
https://doi.org/10.1016/j.cej.2011.10.100 . .

TY  - JOUR
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Rožić, Ljiljana
AU  - Novaković, Tatjana
AU  - Petrović, Srđan
AU  - Stoychev, Dimitar
AU  - Stefanov, Plamen
PY  - 2011
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/846
AB  - Alumina coatings were obtained by deposition of boehmite sol, with added polyvinyl alcohol or polyethylene glycol, on stainless steel foil by spray pyrolysis method. Characterizations of coatings were performed by SEM, XRD, XPS, AFM and S(BET) analysis. Alumina coating prepared with polyethylene glycol has improved resistance to surface area loss than coating obtained with polyvinyl alcohol. At elevated temperatures polyethylene glycol has preserved the morphology of alumina coating and prevents the diffusion of Fe from stainless steel substrate. Porous, foam-like aluminium oxide coating, consisted of accidentally distributed rings of alumina, was created from both additives. Such coating morphology, with a hierarchical porosity, has application in numerous catalytic processes.
PB  - Elsevier
T2  - Journal of Non-Crystalline Solids
T1  - Effects of organic additives on alumina coatings on stainless steel obtained by spray pyrolysis
VL  - 357
IS  - 21
SP  - 3592
EP  - 3597
DO  - 10.1016/j.jnoncrysol.2011.07.006
ER  - 

@article{
author = "Radić, Nenad and Grbić, Boško and Rožić, Ljiljana and Novaković, Tatjana and Petrović, Srđan and Stoychev, Dimitar and Stefanov, Plamen",
year = "2011",
abstract = "Alumina coatings were obtained by deposition of boehmite sol, with added polyvinyl alcohol or polyethylene glycol, on stainless steel foil by spray pyrolysis method. Characterizations of coatings were performed by SEM, XRD, XPS, AFM and S(BET) analysis. Alumina coating prepared with polyethylene glycol has improved resistance to surface area loss than coating obtained with polyvinyl alcohol. At elevated temperatures polyethylene glycol has preserved the morphology of alumina coating and prevents the diffusion of Fe from stainless steel substrate. Porous, foam-like aluminium oxide coating, consisted of accidentally distributed rings of alumina, was created from both additives. Such coating morphology, with a hierarchical porosity, has application in numerous catalytic processes.",
publisher = "Elsevier",
journal = "Journal of Non-Crystalline Solids",
title = "Effects of organic additives on alumina coatings on stainless steel obtained by spray pyrolysis",
volume = "357",
number = "21",
pages = "3592-3597",
doi = "10.1016/j.jnoncrysol.2011.07.006"
}

Radić, N., Grbić, B., Rožić, L., Novaković, T., Petrović, S., Stoychev, D.,& Stefanov, P.. (2011). Effects of organic additives on alumina coatings on stainless steel obtained by spray pyrolysis. in Journal of Non-Crystalline Solids
Elsevier., 357(21), 3592-3597.
https://doi.org/10.1016/j.jnoncrysol.2011.07.006

Radić N, Grbić B, Rožić L, Novaković T, Petrović S, Stoychev D, Stefanov P. Effects of organic additives on alumina coatings on stainless steel obtained by spray pyrolysis. in Journal of Non-Crystalline Solids. 2011;357(21):3592-3597.
doi:10.1016/j.jnoncrysol.2011.07.006 .

Radić, Nenad, Grbić, Boško, Rožić, Ljiljana, Novaković, Tatjana, Petrović, Srđan, Stoychev, Dimitar, Stefanov, Plamen, "Effects of organic additives on alumina coatings on stainless steel obtained by spray pyrolysis" in Journal of Non-Crystalline Solids, 357, no. 21 (2011):3592-3597,
https://doi.org/10.1016/j.jnoncrysol.2011.07.006 . .

TY  - JOUR
AU  - Anic, Mirjana
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Dondur, Vera
AU  - Damjanović, Ljiljana
AU  - Stoychev, Dimitar
AU  - Stefanov, Plamen
PY  - 2011
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/865
AB  - The deep oxidation of n-hexane was studied over Pt catalysts with small and large Pt crystallites, promoted by MnOx. The Mn was deposited on the Pt/Al2O3 by deposition-precipitation method using two alkalis, ammonia and dimethylamine. The strength of the base influenced morphology and performances of Mn-Pt catalysts. Ammonia formed mostly spherical structure of manganese oxide, while dimethylamine created fibrous needle-like shape of MnOx, typical for cryptomelane phase of manganese oxide. This was confirmed by XPS results that show an oxidation state of Mn close to that for cryptomelane. The Pt-Mn catalysts were more active than catalysts containing Pt only. Promoting effect of MnOx is more pronounced for larger Pt crystallites. Among Pt-Mn samples, catalysts synthesized with dimethylamine exhibited the highest activities. Mobility and reactivity of oxygen from Pt-O-Mn sites associated with cryptomelane phase may be responsible for increased activity.
PB  - Elsevier
T2  - Applied Catalysis B-Environmental
T1  - Catalytic activity of Pt catalysts promoted by MnOx for n-hexane oxidation
VL  - 107
IS  - 3-4
SP  - 327
EP  - 332
DO  - 10.1016/j.apcatb.2011.07.032
ER  - 

@article{
author = "Anic, Mirjana and Radić, Nenad and Grbić, Boško and Dondur, Vera and Damjanović, Ljiljana and Stoychev, Dimitar and Stefanov, Plamen",
year = "2011",
abstract = "The deep oxidation of n-hexane was studied over Pt catalysts with small and large Pt crystallites, promoted by MnOx. The Mn was deposited on the Pt/Al2O3 by deposition-precipitation method using two alkalis, ammonia and dimethylamine. The strength of the base influenced morphology and performances of Mn-Pt catalysts. Ammonia formed mostly spherical structure of manganese oxide, while dimethylamine created fibrous needle-like shape of MnOx, typical for cryptomelane phase of manganese oxide. This was confirmed by XPS results that show an oxidation state of Mn close to that for cryptomelane. The Pt-Mn catalysts were more active than catalysts containing Pt only. Promoting effect of MnOx is more pronounced for larger Pt crystallites. Among Pt-Mn samples, catalysts synthesized with dimethylamine exhibited the highest activities. Mobility and reactivity of oxygen from Pt-O-Mn sites associated with cryptomelane phase may be responsible for increased activity.",
publisher = "Elsevier",
journal = "Applied Catalysis B-Environmental",
title = "Catalytic activity of Pt catalysts promoted by MnOx for n-hexane oxidation",
volume = "107",
number = "3-4",
pages = "327-332",
doi = "10.1016/j.apcatb.2011.07.032"
}

Anic, M., Radić, N., Grbić, B., Dondur, V., Damjanović, L., Stoychev, D.,& Stefanov, P.. (2011). Catalytic activity of Pt catalysts promoted by MnOx for n-hexane oxidation. in Applied Catalysis B-Environmental
Elsevier., 107(3-4), 327-332.
https://doi.org/10.1016/j.apcatb.2011.07.032

Anic M, Radić N, Grbić B, Dondur V, Damjanović L, Stoychev D, Stefanov P. Catalytic activity of Pt catalysts promoted by MnOx for n-hexane oxidation. in Applied Catalysis B-Environmental. 2011;107(3-4):327-332.
doi:10.1016/j.apcatb.2011.07.032 .

Anic, Mirjana, Radić, Nenad, Grbić, Boško, Dondur, Vera, Damjanović, Ljiljana, Stoychev, Dimitar, Stefanov, Plamen, "Catalytic activity of Pt catalysts promoted by MnOx for n-hexane oxidation" in Applied Catalysis B-Environmental, 107, no. 3-4 (2011):327-332,
https://doi.org/10.1016/j.apcatb.2011.07.032 . .

TY  - CONF
AU  - Atanasova, Genoveva
AU  - Guergova, Desislava
AU  - Stoychevz, Dimitar
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Stefanov, Plamen
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/669
AB  - In the present work, the surface properties of various Al oxide films were investigated. The oxide films were produced on a stainless steel by spray pyrolysis and cathodic deposition methods. The films obtained represent typical layers that can be used as a support in model systems to investigate alumina-based catalysts. Information about the chemical environment of the Al and O ions in the oxide films depending on the preparation conditions has been deduced from the binding energies of the Al 2p and O Is electron core levels and corresponding Auger parameters.
C3  - Nanostructured Materials, Thin Films and Hard Coatings For Advanced Applications
T1  - Preparation and Characterization of Al2O3 Thin Films for Catalytic Activity Studies
VL  - 159
SP  - 91
DO  - 10.4028/www.scientific.net/SSP.159.91
ER  - 

@conference{
author = "Atanasova, Genoveva and Guergova, Desislava and Stoychevz, Dimitar and Radić, Nenad and Grbić, Boško and Stefanov, Plamen",
year = "2010",
abstract = "In the present work, the surface properties of various Al oxide films were investigated. The oxide films were produced on a stainless steel by spray pyrolysis and cathodic deposition methods. The films obtained represent typical layers that can be used as a support in model systems to investigate alumina-based catalysts. Information about the chemical environment of the Al and O ions in the oxide films depending on the preparation conditions has been deduced from the binding energies of the Al 2p and O Is electron core levels and corresponding Auger parameters.",
journal = "Nanostructured Materials, Thin Films and Hard Coatings For Advanced Applications",
title = "Preparation and Characterization of Al2O3 Thin Films for Catalytic Activity Studies",
volume = "159",
pages = "91",
doi = "10.4028/www.scientific.net/SSP.159.91"
}

Atanasova, G., Guergova, D., Stoychevz, D., Radić, N., Grbić, B.,& Stefanov, P.. (2010). Preparation and Characterization of Al2O3 Thin Films for Catalytic Activity Studies. in Nanostructured Materials, Thin Films and Hard Coatings For Advanced Applications, 159, 91.
https://doi.org/10.4028/www.scientific.net/SSP.159.91

Atanasova G, Guergova D, Stoychevz D, Radić N, Grbić B, Stefanov P. Preparation and Characterization of Al2O3 Thin Films for Catalytic Activity Studies. in Nanostructured Materials, Thin Films and Hard Coatings For Advanced Applications. 2010;159:91.
doi:10.4028/www.scientific.net/SSP.159.91 .

Atanasova, Genoveva, Guergova, Desislava, Stoychevz, Dimitar, Radić, Nenad, Grbić, Boško, Stefanov, Plamen, "Preparation and Characterization of Al2O3 Thin Films for Catalytic Activity Studies" in Nanostructured Materials, Thin Films and Hard Coatings For Advanced Applications, 159 (2010):91,
https://doi.org/10.4028/www.scientific.net/SSP.159.91 . .

TY  - CONF
AU  - Nikolova, Dimitrinka
AU  - Stanković, Miroslav
AU  - Simić, Sanja

AU  - Gabrovska, Margarita
AU  - Stefanov, Plamen
AU  - Edreva-Kardjieva, Rumeana
PY  - 2008
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6323
AB  - Two series of (Ag)NiMg/SiO2 catalysts are synthesized on SiO2 support derived
from two silica sources: diatomite activated at 800oC (Series a; Mg/Ni=0.1 and
SiO2/Ni=1.07) and synthetic water glass (Series b; Mg/Ni=0.1 and SiO2/Ni=1.15).
The modification with silver is made at three molar Ag/Ni ratios, namely 0.0025,
0.025 and 0.1.
The effect of the source of SiO2 support as well as of the Ag presence and
content on the nickel oxidation state in the co-precipitated (Ag)NiMg/SiO2
catalysts after reduction-passivation procedure are studied by XPS.
The peak-fitting of the composite Ni2p level confirms that nickel on the
surface is presented in Ni0 and Ni2+ oxidation states. The higher content of Ni0 on
the surface of the diatomite supported catalysts shows that the metallic nickel is
more stable to oxidation in comparison of the water glass supported ones.
PB  - Society of Physical Chemists of Serbia
C3  - Proceedings - 9th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2008, September 24-26, 2008,  Belgrade, Serbia
T1  - XPS study of the nickel oxidation state in the reduced (Ag)NiMg/SiO2 vegetable oil hydrogenation catalysts
VL  - I
SP  - 175
EP  - 177
UR  - https://hdl.handle.net/21.15107/rcub_cer_6323
ER  - 

@conference{
author = "Nikolova, Dimitrinka and Stanković, Miroslav and Simić, Sanja
 and Gabrovska, Margarita and Stefanov, Plamen and Edreva-Kardjieva, Rumeana",
year = "2008",
abstract = "Two series of (Ag)NiMg/SiO2 catalysts are synthesized on SiO2 support derived
from two silica sources: diatomite activated at 800oC (Series a; Mg/Ni=0.1 and
SiO2/Ni=1.07) and synthetic water glass (Series b; Mg/Ni=0.1 and SiO2/Ni=1.15).
The modification with silver is made at three molar Ag/Ni ratios, namely 0.0025,
0.025 and 0.1.
The effect of the source of SiO2 support as well as of the Ag presence and
content on the nickel oxidation state in the co-precipitated (Ag)NiMg/SiO2
catalysts after reduction-passivation procedure are studied by XPS.
The peak-fitting of the composite Ni2p level confirms that nickel on the
surface is presented in Ni0 and Ni2+ oxidation states. The higher content of Ni0 on
the surface of the diatomite supported catalysts shows that the metallic nickel is
more stable to oxidation in comparison of the water glass supported ones.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Proceedings - 9th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2008, September 24-26, 2008,  Belgrade, Serbia",
title = "XPS study of the nickel oxidation state in the reduced (Ag)NiMg/SiO2 vegetable oil hydrogenation catalysts",
volume = "I",
pages = "175-177",
url = "https://hdl.handle.net/21.15107/rcub_cer_6323"
}

Nikolova, D., Stanković, M., Simić, S., Gabrovska, M., Stefanov, P.,& Edreva-Kardjieva, R.. (2008). XPS study of the nickel oxidation state in the reduced (Ag)NiMg/SiO2 vegetable oil hydrogenation catalysts. in Proceedings - 9th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2008, September 24-26, 2008,  Belgrade, Serbia
Society of Physical Chemists of Serbia., I, 175-177.
https://hdl.handle.net/21.15107/rcub_cer_6323

Nikolova D, Stanković M, Simić S, Gabrovska M, Stefanov P, Edreva-Kardjieva R. XPS study of the nickel oxidation state in the reduced (Ag)NiMg/SiO2 vegetable oil hydrogenation catalysts. in Proceedings - 9th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2008, September 24-26, 2008,  Belgrade, Serbia. 2008;I:175-177.
https://hdl.handle.net/21.15107/rcub_cer_6323 .

Nikolova, Dimitrinka, Stanković, Miroslav, Simić, Sanja
, Gabrovska, Margarita, Stefanov, Plamen, Edreva-Kardjieva, Rumeana, "XPS study of the nickel oxidation state in the reduced (Ag)NiMg/SiO2 vegetable oil hydrogenation catalysts" in Proceedings - 9th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2008, September 24-26, 2008,  Belgrade, Serbia, I (2008):175-177,
https://hdl.handle.net/21.15107/rcub_cer_6323 .

TY  - JOUR
AU  - Novaković, Tatjana
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Dondur, Vera
AU  - Mitrić, Miodrag
AU  - Randjelović, Danijela
AU  - Stoychev, Dimitar
AU  - Stefanov, Plamen
PY  - 2008
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/388
AB  - Active porous alumina coatings were obtained by deposition of boehmite sol on stainless steel (SS) substrate by spray pyrolysis method. The temperature and the doping of polyethylene glycol (PEG) and La3+ in the boehmite sol effects on the textural and structural properties and surface morphology of alumina coatings on stainless steel samples are presented. It was found that the addition of polyethylene glycol combined with La3+ to the boehmite sol before spraying improves the thermal stability of porous alumina coatings. X-ray diffraction patterns of a doped sample, even after 5 h at 1000 degrees C, point out to the presence only of delta-Al2O3, with a S-BET of 74 m(2)/g. XPS data and SEM photographs of coated samples show that alumina were well deposited on the metallic supports. The absence of any lanthanum compounds indicates very well homogeneous dispersion of La3+-ions on the surface of alumina crystallites. AFM images show sphere like alumina grains and agglomerates with surface roughness from 60 to 180 nm, depending on temperature and doping. Surface roughness of doped alumina samples was higher than that of non-doped. It was pointed out that spray pyrolysis method enables preparation of alumina layers with relatively high specific surface area, suitable for applications as catalysts supports.
PB  - Elsevier
T2  - Applied Surface Science
T1  - The thermal stability of porous alumina/stainless steel catalyst support obtained by spray pyrolysis
VL  - 255
IS  - 5
SP  - 3049
EP  - 3055
DO  - 10.1016/j.apsusc.2008.08.074
ER  - 

@article{
author = "Novaković, Tatjana and Radić, Nenad and Grbić, Boško and Dondur, Vera and Mitrić, Miodrag and Randjelović, Danijela and Stoychev, Dimitar and Stefanov, Plamen",
year = "2008",
abstract = "Active porous alumina coatings were obtained by deposition of boehmite sol on stainless steel (SS) substrate by spray pyrolysis method. The temperature and the doping of polyethylene glycol (PEG) and La3+ in the boehmite sol effects on the textural and structural properties and surface morphology of alumina coatings on stainless steel samples are presented. It was found that the addition of polyethylene glycol combined with La3+ to the boehmite sol before spraying improves the thermal stability of porous alumina coatings. X-ray diffraction patterns of a doped sample, even after 5 h at 1000 degrees C, point out to the presence only of delta-Al2O3, with a S-BET of 74 m(2)/g. XPS data and SEM photographs of coated samples show that alumina were well deposited on the metallic supports. The absence of any lanthanum compounds indicates very well homogeneous dispersion of La3+-ions on the surface of alumina crystallites. AFM images show sphere like alumina grains and agglomerates with surface roughness from 60 to 180 nm, depending on temperature and doping. Surface roughness of doped alumina samples was higher than that of non-doped. It was pointed out that spray pyrolysis method enables preparation of alumina layers with relatively high specific surface area, suitable for applications as catalysts supports.",
publisher = "Elsevier",
journal = "Applied Surface Science",
title = "The thermal stability of porous alumina/stainless steel catalyst support obtained by spray pyrolysis",
volume = "255",
number = "5",
pages = "3049-3055",
doi = "10.1016/j.apsusc.2008.08.074"
}

Novaković, T., Radić, N., Grbić, B., Dondur, V., Mitrić, M., Randjelović, D., Stoychev, D.,& Stefanov, P.. (2008). The thermal stability of porous alumina/stainless steel catalyst support obtained by spray pyrolysis. in Applied Surface Science
Elsevier., 255(5), 3049-3055.
https://doi.org/10.1016/j.apsusc.2008.08.074

Novaković T, Radić N, Grbić B, Dondur V, Mitrić M, Randjelović D, Stoychev D, Stefanov P. The thermal stability of porous alumina/stainless steel catalyst support obtained by spray pyrolysis. in Applied Surface Science. 2008;255(5):3049-3055.
doi:10.1016/j.apsusc.2008.08.074 .

Novaković, Tatjana, Radić, Nenad, Grbić, Boško, Dondur, Vera, Mitrić, Miodrag, Randjelović, Danijela, Stoychev, Dimitar, Stefanov, Plamen, "The thermal stability of porous alumina/stainless steel catalyst support obtained by spray pyrolysis" in Applied Surface Science, 255, no. 5 (2008):3049-3055,
https://doi.org/10.1016/j.apsusc.2008.08.074 . .