Đokić, Veljko R.

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Authority KeyName Variants
orcid::0000-0003-2541-0420
  • Đokić, Veljko R. (20)
  • Đokić, Veljko (1)
Projects
Synthesis, processing and applications of nanostructured multifunctional materials with defined properties Micromechanical criteria of damage and fracture
ERC advanced grant “PICOPROP” [670918] Development and Application of Methods and Materials for Monitoring New Organic Contaminants, Toxic Compounds and Heavy Metals
Directed synthesis, structure and properties of multifunctional materials Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200135 (University of Belgrade, Faculty of Technology and Metallurgy)
Advanced technologies for monitoring and environmental protection from chemical pollutants and radiation burden Functional, Functionalized and Advanced Nanomaterials
Predefined functional properties polymer composite materials processes and equipment development Swiss National Science Foundation [160169]
Bilateral project Serbia-Slovenia “Developments of novel materials for alkaline-ion batteries” German-Serbian DAAD bilateral collaboration (Project No. 451-03-01038/2015-09118/18)
Reinforcing of Nanotechnology and Functional Materials Centre Study of the Synthesis, Structure and Activity of Natural and Synthetic Organic Compounds
Dynamics of nonlinear physicochemical and biochemical systems with modeling and predicting of their behavior under nonequilibrium conditions Nanostructured Functional and Composite Materials in Catalytic and Sorption Processes
Molecular designing of nanoparticles with controlled morphological and physicochemical characteristics and functional materials based on them Zero- to Three-Dimensional Nanostructures for Application in Electronics and Renewable Energy Sources: Synthesis, Characterization and Processing
Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine Lithium-ion batteries and fuel cells - research and development
Magnetic and radionuclide labeled nanostructured materials for medical applications Nanotech FTM, FP7-REGPOT [245916], UEFISCDI [304/2011]
Serbian Academy of Sciences and Arts “Electrocatalysis in the contemporary process of energy conversion” Serbian Academy of Sciences and Arts [F-141]
United States Department of Energy (DOE) [DE-AC02-05CH11231] University of Defense [VA-TT/4-16-18]

Author's Bibliography

Highly Active Rutile TiO2 Nanocrystalline Photocatalysts

Đokić, Veljko R.; Marinković, Aleksandar D.; Petrović, Rada D.; Ersen, Ovidiu; Zafeiratos, Spyridon; Mitrić, Miodrag; Ophus, Colin; Radmilović, Velimir R.; Janaćković, Đorđe T.

(2020)

TY  - JOUR
AU  - Đokić, Veljko R.
AU  - Marinković, Aleksandar D.
AU  - Petrović, Rada D.
AU  - Ersen, Ovidiu
AU  - Zafeiratos, Spyridon
AU  - Mitrić, Miodrag
AU  - Ophus, Colin
AU  - Radmilović, Velimir R.
AU  - Janaćković, Đorđe T.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9106
AB  - The controllable synthesis of rutile TiO2 single crystal particles with the preferential orientation of {111} facets still remains a scientific and technological challenge. Here, we developed a facile route for fabrication of rutile TiO2 nanorod crystals (RTiO2NRs) having high ratios of oxidative {111} to reductive {110} surfaces. RTiO2NRs were synthesized using a peroxo-titanium complex (PTC) approach, which was controlled by changing the Ti/H2O2 ratio. The thus obtained RTiO2NRs revealed a high tendency to agglomerate through orientation-dependent attachment along the {110} facets. This resulted in an increased {111}/{110} surface ratio and led to a markedly improved photocatalytic activity of RTiO2NR aggregates. The reported findings illustrate the rich potential of the herein proposed facile and energy-efficient synthesis of nanostructured rutile TiO2-based photocatalysts.
T2  - ACS Applied Materials & Interfaces
T1  - Highly Active Rutile TiO2 Nanocrystalline Photocatalysts
VL  - 12
IS  - 29
SP  - 33058
EP  - 33068
DO  - 10.1021/acsami.0c03150
ER  - 
@article{
author = "Đokić, Veljko R. and Marinković, Aleksandar D. and Petrović, Rada D. and Ersen, Ovidiu and Zafeiratos, Spyridon and Mitrić, Miodrag and Ophus, Colin and Radmilović, Velimir R. and Janaćković, Đorđe T.",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9106",
abstract = "The controllable synthesis of rutile TiO2 single crystal particles with the preferential orientation of {111} facets still remains a scientific and technological challenge. Here, we developed a facile route for fabrication of rutile TiO2 nanorod crystals (RTiO2NRs) having high ratios of oxidative {111} to reductive {110} surfaces. RTiO2NRs were synthesized using a peroxo-titanium complex (PTC) approach, which was controlled by changing the Ti/H2O2 ratio. The thus obtained RTiO2NRs revealed a high tendency to agglomerate through orientation-dependent attachment along the {110} facets. This resulted in an increased {111}/{110} surface ratio and led to a markedly improved photocatalytic activity of RTiO2NR aggregates. The reported findings illustrate the rich potential of the herein proposed facile and energy-efficient synthesis of nanostructured rutile TiO2-based photocatalysts.",
journal = "ACS Applied Materials & Interfaces",
title = "Highly Active Rutile TiO2 Nanocrystalline Photocatalysts",
volume = "12",
number = "29",
pages = "33058-33068",
doi = "10.1021/acsami.0c03150"
}
Đokić, V. R., Marinković, A. D., Petrović, R. D., Ersen, O., Zafeiratos, S., Mitrić, M., Ophus, C., Radmilović, V. R.,& Janaćković, Đ. T. (2020). Highly Active Rutile TiO2 Nanocrystalline Photocatalysts.
ACS Applied Materials & Interfaces, 12(29), 33058-33068.
https://doi.org/10.1021/acsami.0c03150
Đokić VR, Marinković AD, Petrović RD, Ersen O, Zafeiratos S, Mitrić M, Ophus C, Radmilović VR, Janaćković ĐT. Highly Active Rutile TiO2 Nanocrystalline Photocatalysts. ACS Applied Materials & Interfaces. 2020;12(29):33058-33068
Đokić Veljko R., Marinković Aleksandar D., Petrović Rada D., Ersen Ovidiu, Zafeiratos Spyridon, Mitrić Miodrag, Ophus Colin, Radmilović Velimir R., Janaćković Đorđe T., "Highly Active Rutile TiO2 Nanocrystalline Photocatalysts" 12, no. 29 (2020):33058-33068,
https://doi.org/10.1021/acsami.0c03150 .
1
2

The effect of polyhedral oligosilsesquioxanes (POSS) on cavitation resistance of hybrid acrylate films

Kalifa, Mustafa; Tomić, Nataša Z.; Vuksanović, Marija M.; Stevanović, Sanja; Đokić, Veljko; Volkov-Husović, Tatjana; Pavlović, Vladimir B.; Jančić-Heinemann, Radmila; Marinković, Aleksandar D.

(2020)

TY  - JOUR
AU  - Kalifa, Mustafa
AU  - Tomić, Nataša Z.
AU  - Vuksanović, Marija M.
AU  - Stevanović, Sanja
AU  - Đokić, Veljko
AU  - Volkov-Husović, Tatjana
AU  - Pavlović, Vladimir B.
AU  - Jančić-Heinemann, Radmila
AU  - Marinković, Aleksandar D.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9001
AB  - Cavitation erosion of hybrid acrylate composite films with polyhedraloligosilsesquioxanes (POSS) was investigated in this study. The hybrid films aremade with 1, 3 and 5 wt% of POSS reagents containing: (a) hydroxyl (POSS-M),(b) both hydroxyl and allyl (POSS-M-A) and (c) methacryloyl groups (POSS-MCl).Addition of 5 wt% POSS-M-A caused the highest microhardness increase for49.8%, in comparison to the pure matrix material. Cavitation resistance of hybridfilms, estimated as the time-dependent mass loss, was improved by POSS addition.POSS-M-A addition (5 wt%) contributed to 94% lower mass loss comparingto pure Bis-GMA/TEGDMA film. Scanning electron (SEM) and atomic forcemicroscopy (AFM) showed the lowest surface roughness obtained for compositewith POSS-M-A. The improved hardness and wear resistance of the compositefilms indicated that POSS-M-A filler enhanced interfacial adhesion and reinforcingof the Bis-GMA/TEGDMA matrix.
T2  - Polymer Composites
T1  - The effect of polyhedral oligosilsesquioxanes (POSS) on cavitation resistance of hybrid acrylate films
SP  - 3403
EP  - 3410
DO  - 10.1002/pc.25629
ER  - 
@article{
author = "Kalifa, Mustafa and Tomić, Nataša Z. and Vuksanović, Marija M. and Stevanović, Sanja and Đokić, Veljko and Volkov-Husović, Tatjana and Pavlović, Vladimir B. and Jančić-Heinemann, Radmila and Marinković, Aleksandar D.",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9001",
abstract = "Cavitation erosion of hybrid acrylate composite films with polyhedraloligosilsesquioxanes (POSS) was investigated in this study. The hybrid films aremade with 1, 3 and 5 wt% of POSS reagents containing: (a) hydroxyl (POSS-M),(b) both hydroxyl and allyl (POSS-M-A) and (c) methacryloyl groups (POSS-MCl).Addition of 5 wt% POSS-M-A caused the highest microhardness increase for49.8%, in comparison to the pure matrix material. Cavitation resistance of hybridfilms, estimated as the time-dependent mass loss, was improved by POSS addition.POSS-M-A addition (5 wt%) contributed to 94% lower mass loss comparingto pure Bis-GMA/TEGDMA film. Scanning electron (SEM) and atomic forcemicroscopy (AFM) showed the lowest surface roughness obtained for compositewith POSS-M-A. The improved hardness and wear resistance of the compositefilms indicated that POSS-M-A filler enhanced interfacial adhesion and reinforcingof the Bis-GMA/TEGDMA matrix.",
journal = "Polymer Composites",
title = "The effect of polyhedral oligosilsesquioxanes (POSS) on cavitation resistance of hybrid acrylate films",
pages = "3403-3410",
doi = "10.1002/pc.25629"
}
Kalifa, M., Tomić, N. Z., Vuksanović, M. M., Stevanović, S., Đokić, V., Volkov-Husović, T., Pavlović, V. B., Jančić-Heinemann, R.,& Marinković, A. D. (2020). The effect of polyhedral oligosilsesquioxanes (POSS) on cavitation resistance of hybrid acrylate films.
Polymer Composites, 3403-3410.
https://doi.org/10.1002/pc.25629
Kalifa M, Tomić NZ, Vuksanović MM, Stevanović S, Đokić V, Volkov-Husović T, Pavlović VB, Jančić-Heinemann R, Marinković AD. The effect of polyhedral oligosilsesquioxanes (POSS) on cavitation resistance of hybrid acrylate films. Polymer Composites. 2020;:3403-3410
Kalifa Mustafa, Tomić Nataša Z., Vuksanović Marija M., Stevanović Sanja, Đokić Veljko, Volkov-Husović Tatjana, Pavlović Vladimir B., Jančić-Heinemann Radmila, Marinković Aleksandar D., "The effect of polyhedral oligosilsesquioxanes (POSS) on cavitation resistance of hybrid acrylate films" (2020):3403-3410,
https://doi.org/10.1002/pc.25629 .

Synthesis and characterization of nanocrystalline polyhedral oligo silsesquioxanes (POSS) with cross-linkable functionalities

Tomić, Nataša Z.; Vuksanović, Marija M.; Đokić, Veljko R.; Mitrić, Miodrag; Simić, Milena R.; Pavlović, Vladimir B.; Jančić Heinemann, Radmila; Marinković, Aleksandar D.

(2019)

TY  - JOUR
AU  - Tomić, Nataša Z.
AU  - Vuksanović, Marija M.
AU  - Đokić, Veljko R.
AU  - Mitrić, Miodrag
AU  - Simić, Milena R.
AU  - Pavlović, Vladimir B.
AU  - Jančić Heinemann, Radmila
AU  - Marinković, Aleksandar D.
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8650
AB  - A facile synthesis was employed for three polyhedral oligo silsequioxanes (POSS), obtaining incompletely condensed structures with fern-like and cubic morphologies. Proton nuclear magnetic resonance spectroscopy (1H NMR) indicated the successful synthesis of the proposed POSS structures. The hydroxyl groups affected the manner and type of POSS morphology, as seen under a scanning electron microscope (SEM) and a transmission electron microscope (TEM). Fourier-transform infrared spectroscopy (FTIR) showed the availability of surface hydroxyl groups that contributed to the formation of a higher amount of char residue, as found from TGA analysis. The highest decomposition temperature (281 °C) and the least char residue were found for a cross-linkable POSS, obtained by esterification of the hydroxyl groups with methacryloyl chloride. © 2019 Elsevier Ltd
T2  - Polyhedron
T1  - Synthesis and characterization of nanocrystalline polyhedral oligo silsesquioxanes (POSS) with cross-linkable functionalities
VL  - 171
SP  - 299
EP  - 304
DO  - 10.1016/j.poly.2019.06.059
ER  - 
@article{
author = "Tomić, Nataša Z. and Vuksanović, Marija M. and Đokić, Veljko R. and Mitrić, Miodrag and Simić, Milena R. and Pavlović, Vladimir B. and Jančić Heinemann, Radmila and Marinković, Aleksandar D.",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8650",
abstract = "A facile synthesis was employed for three polyhedral oligo silsequioxanes (POSS), obtaining incompletely condensed structures with fern-like and cubic morphologies. Proton nuclear magnetic resonance spectroscopy (1H NMR) indicated the successful synthesis of the proposed POSS structures. The hydroxyl groups affected the manner and type of POSS morphology, as seen under a scanning electron microscope (SEM) and a transmission electron microscope (TEM). Fourier-transform infrared spectroscopy (FTIR) showed the availability of surface hydroxyl groups that contributed to the formation of a higher amount of char residue, as found from TGA analysis. The highest decomposition temperature (281 °C) and the least char residue were found for a cross-linkable POSS, obtained by esterification of the hydroxyl groups with methacryloyl chloride. © 2019 Elsevier Ltd",
journal = "Polyhedron",
title = "Synthesis and characterization of nanocrystalline polyhedral oligo silsesquioxanes (POSS) with cross-linkable functionalities",
volume = "171",
pages = "299-304",
doi = "10.1016/j.poly.2019.06.059"
}
Tomić, N. Z., Vuksanović, M. M., Đokić, V. R., Mitrić, M., Simić, M. R., Pavlović, V. B., Jančić Heinemann, R.,& Marinković, A. D. (2019). Synthesis and characterization of nanocrystalline polyhedral oligo silsesquioxanes (POSS) with cross-linkable functionalities.
Polyhedron, 171, 299-304.
https://doi.org/10.1016/j.poly.2019.06.059
Tomić NZ, Vuksanović MM, Đokić VR, Mitrić M, Simić MR, Pavlović VB, Jančić Heinemann R, Marinković AD. Synthesis and characterization of nanocrystalline polyhedral oligo silsesquioxanes (POSS) with cross-linkable functionalities. Polyhedron. 2019;171:299-304
Tomić Nataša Z., Vuksanović Marija M., Đokić Veljko R., Mitrić Miodrag, Simić Milena R., Pavlović Vladimir B., Jančić Heinemann Radmila, Marinković Aleksandar D., "Synthesis and characterization of nanocrystalline polyhedral oligo silsesquioxanes (POSS) with cross-linkable functionalities" 171 (2019):299-304,
https://doi.org/10.1016/j.poly.2019.06.059 .
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The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution

Georgijević, Radovan; Vujković, Milica; Gutić, Sanjin J.; Aliefendić, Meho; Jugović, Dragana; Mitrić, Miodrag; Đokić, Veljko R.; Mentus, Slavko V.

(2019)

TY  - JOUR
AU  - Georgijević, Radovan
AU  - Vujković, Milica
AU  - Gutić, Sanjin J.
AU  - Aliefendić, Meho
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Đokić, Veljko R.
AU  - Mentus, Slavko V.
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7936
AB  - To contribute to the knowledge on the influence of synthesis procedure on the intercalation kinetics of lithium ions into phospho-olivines, LiFePO4/C composite samples (LFPC) were synthesized in two ways, the first one in a sol-gel procedure (SG), and the other in a solid-state reaction (SS). The X-ray diffractograms (XRD) of both samples overlapped with that of pure LiFePO4, taken from the crystallographic database. Scanning electron microscopy pictures indicated the high degree of interparticle sintering, which caused a considerable agglomerate growth. The results of potentiodynamic measurements in aqueous LiNO3 solution revealed that for SS sample, three times higher initial capacity from that of SG one, (amounting to 74 mAh g−1 at 5 mV s−1). However, capacity fade on rising scan rate is much more expressed for SS sample than for SG one. We suggest that a different degree of material utilization due to the incomplete coverage of olivine particles by carbon explains this difference. The technique of separation of diffusion and capacitance currents was applied in a kinetic analysis, but it was shown to be inappropriate. We suggest the inapplicability of classic CV theory to the intercalation system accompanied by phase transition. Instead, a model of ohmic resistance determination of process kinetics was considered. LFPC-SS sample delivers three times larger capacity in LiNO3, amounting to 74 mAh g−1 at 1 mV s−1.
T2  - Journal of Alloys and Compounds
T1  - The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution
VL  - 776
SP  - 475
EP  - 485
DO  - 10.1016/j.jallcom.2018.10.246
ER  - 
@article{
author = "Georgijević, Radovan and Vujković, Milica and Gutić, Sanjin J. and Aliefendić, Meho and Jugović, Dragana and Mitrić, Miodrag and Đokić, Veljko R. and Mentus, Slavko V.",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/7936",
abstract = "To contribute to the knowledge on the influence of synthesis procedure on the intercalation kinetics of lithium ions into phospho-olivines, LiFePO4/C composite samples (LFPC) were synthesized in two ways, the first one in a sol-gel procedure (SG), and the other in a solid-state reaction (SS). The X-ray diffractograms (XRD) of both samples overlapped with that of pure LiFePO4, taken from the crystallographic database. Scanning electron microscopy pictures indicated the high degree of interparticle sintering, which caused a considerable agglomerate growth. The results of potentiodynamic measurements in aqueous LiNO3 solution revealed that for SS sample, three times higher initial capacity from that of SG one, (amounting to 74 mAh g−1 at 5 mV s−1). However, capacity fade on rising scan rate is much more expressed for SS sample than for SG one. We suggest that a different degree of material utilization due to the incomplete coverage of olivine particles by carbon explains this difference. The technique of separation of diffusion and capacitance currents was applied in a kinetic analysis, but it was shown to be inappropriate. We suggest the inapplicability of classic CV theory to the intercalation system accompanied by phase transition. Instead, a model of ohmic resistance determination of process kinetics was considered. LFPC-SS sample delivers three times larger capacity in LiNO3, amounting to 74 mAh g−1 at 1 mV s−1.",
journal = "Journal of Alloys and Compounds",
title = "The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution",
volume = "776",
pages = "475-485",
doi = "10.1016/j.jallcom.2018.10.246"
}
Georgijević, R., Vujković, M., Gutić, S. J., Aliefendić, M., Jugović, D., Mitrić, M., Đokić, V. R.,& Mentus, S. V. (2019). The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution.
Journal of Alloys and Compounds, 776, 475-485.
https://doi.org/10.1016/j.jallcom.2018.10.246
Georgijević R, Vujković M, Gutić SJ, Aliefendić M, Jugović D, Mitrić M, Đokić VR, Mentus SV. The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution. Journal of Alloys and Compounds. 2019;776:475-485
Georgijević Radovan, Vujković Milica, Gutić Sanjin J., Aliefendić Meho, Jugović Dragana, Mitrić Miodrag, Đokić Veljko R., Mentus Slavko V., "The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution" 776 (2019):475-485,
https://doi.org/10.1016/j.jallcom.2018.10.246 .
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Silicon nanostructuring by Ag ions implantation through nanosphere lithography mask

Modrić-Šahbazović, Almedina; Novaković, Mirjana M.; Schmidt, Emanuel O.; Gazdić, Izet; Đokić, Veljko R.; Peruško, Davor; Bibić, Nataša M.; Ronning, Carsten; Rakočević, Zlatko Lj.

(2019)

TY  - JOUR
AU  - Modrić-Šahbazović, Almedina
AU  - Novaković, Mirjana M.
AU  - Schmidt, Emanuel O.
AU  - Gazdić, Izet
AU  - Đokić, Veljko R.
AU  - Peruško, Davor
AU  - Bibić, Nataša M.
AU  - Ronning, Carsten
AU  - Rakočević, Zlatko Lj.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0925346718308231
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8016
AB  - Nanosphere lithography is an effective technique for high throughput fabrication of well-ordered patterns on large areas. This study reports on nanostructuring of silicon samples by means of Ag ions implantation through self-organized polystyrene (PS) masks. The PS nanospheres with a diameter of ∼150 nm were self-assembled in a hexagonal array on top of Si(100) wafers, and then used as a mask for subsequent 60 keV silver ion implantation. Different fluences were applied up to 2 × 1016 ions/cm2 in order to create a distribution of different sizes and densities of buried metal nanoparticles. The surface morphology and the subsurface structures were studied by scanning electron microscopy and cross-sectional transmission electron microscopy, as a function of the mask deformation upon irradiation and the implantation parameters itself. We demonstrate that Ag is implanted into Si only through the mask openings, thus forming a regular array of amorphized regions over the wide area of silicon substrate. These fragments are of similar dimensions of the spheres with widths of about 190 nm and distributed over 60 nm in depth due to the given ion range. At the subsurface region of the implanted fragments, the synthesis of small sized and optically active Ag nanoparticles is clearly observed. The samples show a strong absorption peak in the long-wavelength region from 689 to 745 nm characteristic for surface plasmon resonance excitations, which could be fitted well using the Maxwell-Garnett`s theory. © 2018 Elsevier B.V.
T2  - Optical Materials
T1  - Silicon nanostructuring by Ag ions implantation through nanosphere lithography mask
VL  - 88
SP  - 508
EP  - 515
DO  - 10.1016/j.optmat.2018.12.022
ER  - 
@article{
author = "Modrić-Šahbazović, Almedina and Novaković, Mirjana M. and Schmidt, Emanuel O. and Gazdić, Izet and Đokić, Veljko R. and Peruško, Davor and Bibić, Nataša M. and Ronning, Carsten and Rakočević, Zlatko Lj.",
year = "2019",
url = "https://linkinghub.elsevier.com/retrieve/pii/S0925346718308231, http://vinar.vin.bg.ac.rs/handle/123456789/8016",
abstract = "Nanosphere lithography is an effective technique for high throughput fabrication of well-ordered patterns on large areas. This study reports on nanostructuring of silicon samples by means of Ag ions implantation through self-organized polystyrene (PS) masks. The PS nanospheres with a diameter of ∼150 nm were self-assembled in a hexagonal array on top of Si(100) wafers, and then used as a mask for subsequent 60 keV silver ion implantation. Different fluences were applied up to 2 × 1016 ions/cm2 in order to create a distribution of different sizes and densities of buried metal nanoparticles. The surface morphology and the subsurface structures were studied by scanning electron microscopy and cross-sectional transmission electron microscopy, as a function of the mask deformation upon irradiation and the implantation parameters itself. We demonstrate that Ag is implanted into Si only through the mask openings, thus forming a regular array of amorphized regions over the wide area of silicon substrate. These fragments are of similar dimensions of the spheres with widths of about 190 nm and distributed over 60 nm in depth due to the given ion range. At the subsurface region of the implanted fragments, the synthesis of small sized and optically active Ag nanoparticles is clearly observed. The samples show a strong absorption peak in the long-wavelength region from 689 to 745 nm characteristic for surface plasmon resonance excitations, which could be fitted well using the Maxwell-Garnett`s theory. © 2018 Elsevier B.V.",
journal = "Optical Materials",
title = "Silicon nanostructuring by Ag ions implantation through nanosphere lithography mask",
volume = "88",
pages = "508-515",
doi = "10.1016/j.optmat.2018.12.022"
}
Modrić-Šahbazović, A., Novaković, M. M., Schmidt, E. O., Gazdić, I., Đokić, V. R., Peruško, D., Bibić, N. M., Ronning, C.,& Rakočević, Z. Lj. (2019). Silicon nanostructuring by Ag ions implantation through nanosphere lithography mask.
Optical Materials, 88, 508-515.
https://doi.org/10.1016/j.optmat.2018.12.022
Modrić-Šahbazović A, Novaković MM, Schmidt EO, Gazdić I, Đokić VR, Peruško D, Bibić NM, Ronning C, Rakočević ZL. Silicon nanostructuring by Ag ions implantation through nanosphere lithography mask. Optical Materials. 2019;88:508-515
Modrić-Šahbazović Almedina, Novaković Mirjana M., Schmidt Emanuel O., Gazdić Izet, Đokić Veljko R., Peruško Davor, Bibić Nataša M., Ronning Carsten, Rakočević Zlatko Lj., "Silicon nanostructuring by Ag ions implantation through nanosphere lithography mask" 88 (2019):508-515,
https://doi.org/10.1016/j.optmat.2018.12.022 .
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The influence of the surface nanostructured modification on the corrosion resistance of the ultrafine-grained Ti–13Nb–13Zr alloy in artificial saliva

Barjaktarević, Dragana R.; Đokić, Veljko R.; Bajat, Jelena B.; Dimić, Ivana D.; Cvijović-Alagić, Ivana; Rakin, Marko P.

(2019)

TY  - JOUR
AU  - Barjaktarević, Dragana R.
AU  - Đokić, Veljko R.
AU  - Bajat, Jelena B.
AU  - Dimić, Ivana D.
AU  - Cvijović-Alagić, Ivana
AU  - Rakin, Marko P.
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8411
AB  - On the surface of the ultrafine-grained Ti–13Nb–13Zr alloy and the coarse-grained Ti–13Nb–13Zr alloy nanotubular oxide layers were formed by electrochemical anodization in the 1 M H3PO4 + NaF electrolyte in order to evaluate the electrochemical behaviour in the artificial saliva. SEM images showed that homogeneous nanotubular oxide layers could be formed by anodic oxidation of titanium alloys in an electrolyte with fluoride ions. These two titanium alloys, like other materials developed to replace the bone tissue in the human body, have to be highly corrosion resistant, which is one of the most common requirement in terms of the biocompatibility, damage and fracture prevention. The alloys were analysed by means of the electrochemical impedance spectroscopy and potentiodynamic polarization. The analyzed alloys had good corrosion stability, while nanotubular oxide layer improved their corrosion resistance. © 2019 Elsevier Ltd
T2  - Theoretical and Applied Fracture Mechanics
T1  - The influence of the surface nanostructured modification on the corrosion resistance of the ultrafine-grained Ti–13Nb–13Zr alloy in artificial saliva
VL  - 103
SP  - 102307
DO  - 10.1016/j.tafmec.2019.102307
ER  - 
@article{
author = "Barjaktarević, Dragana R. and Đokić, Veljko R. and Bajat, Jelena B. and Dimić, Ivana D. and Cvijović-Alagić, Ivana and Rakin, Marko P.",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8411",
abstract = "On the surface of the ultrafine-grained Ti–13Nb–13Zr alloy and the coarse-grained Ti–13Nb–13Zr alloy nanotubular oxide layers were formed by electrochemical anodization in the 1 M H3PO4 + NaF electrolyte in order to evaluate the electrochemical behaviour in the artificial saliva. SEM images showed that homogeneous nanotubular oxide layers could be formed by anodic oxidation of titanium alloys in an electrolyte with fluoride ions. These two titanium alloys, like other materials developed to replace the bone tissue in the human body, have to be highly corrosion resistant, which is one of the most common requirement in terms of the biocompatibility, damage and fracture prevention. The alloys were analysed by means of the electrochemical impedance spectroscopy and potentiodynamic polarization. The analyzed alloys had good corrosion stability, while nanotubular oxide layer improved their corrosion resistance. © 2019 Elsevier Ltd",
journal = "Theoretical and Applied Fracture Mechanics",
title = "The influence of the surface nanostructured modification on the corrosion resistance of the ultrafine-grained Ti–13Nb–13Zr alloy in artificial saliva",
volume = "103",
pages = "102307",
doi = "10.1016/j.tafmec.2019.102307"
}
Barjaktarević, D. R., Đokić, V. R., Bajat, J. B., Dimić, I. D., Cvijović-Alagić, I.,& Rakin, M. P. (2019). The influence of the surface nanostructured modification on the corrosion resistance of the ultrafine-grained Ti–13Nb–13Zr alloy in artificial saliva.
Theoretical and Applied Fracture Mechanics, 103, 102307.
https://doi.org/10.1016/j.tafmec.2019.102307
Barjaktarević DR, Đokić VR, Bajat JB, Dimić ID, Cvijović-Alagić I, Rakin MP. The influence of the surface nanostructured modification on the corrosion resistance of the ultrafine-grained Ti–13Nb–13Zr alloy in artificial saliva. Theoretical and Applied Fracture Mechanics. 2019;103:102307
Barjaktarević Dragana R., Đokić Veljko R., Bajat Jelena B., Dimić Ivana D., Cvijović-Alagić Ivana, Rakin Marko P., "The influence of the surface nanostructured modification on the corrosion resistance of the ultrafine-grained Ti–13Nb–13Zr alloy in artificial saliva" 103 (2019):102307,
https://doi.org/10.1016/j.tafmec.2019.102307 .
4
4
5

Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping

Vujančević, Jelena; Andričević, Pavao; Bjelajac, Anđelika; Đokić, Veljko R.; Popović, Maja; Rakočević, Zlatko Lj.; Horvath, Endre; Kollar, Marton; Nafradi, Balint; Schiller, Andreas; Domanski, Konrad; Forro, Laszlo; Pavlović, Vera P.; Janaćković, Đorđe T.

(2019)

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Bjelajac, Anđelika
AU  - Đokić, Veljko R.
AU  - Popović, Maja
AU  - Rakočević, Zlatko Lj.
AU  - Horvath, Endre
AU  - Kollar, Marton
AU  - Nafradi, Balint
AU  - Schiller, Andreas
AU  - Domanski, Konrad
AU  - Forro, Laszlo
AU  - Pavlović, Vera P.
AU  - Janaćković, Đorđe T.
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8538
AB  - Highly ordered, anodically grown TiO 2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 ± 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO 2 /CH 3 NH 3 PbI 3 single crystals. The N-TiO 2 /perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures. © 2019
T2  - Ceramics International
T1  - Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping
VL  - 45
IS  - 8
SP  - 10013
EP  - 10020
DO  - 10.1016/j.ceramint.2019.02.045
ER  - 
@article{
author = "Vujančević, Jelena and Andričević, Pavao and Bjelajac, Anđelika and Đokić, Veljko R. and Popović, Maja and Rakočević, Zlatko Lj. and Horvath, Endre and Kollar, Marton and Nafradi, Balint and Schiller, Andreas and Domanski, Konrad and Forro, Laszlo and Pavlović, Vera P. and Janaćković, Đorđe T.",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8538",
abstract = "Highly ordered, anodically grown TiO 2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 ± 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO 2 /CH 3 NH 3 PbI 3 single crystals. The N-TiO 2 /perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures. © 2019",
journal = "Ceramics International",
title = "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping",
volume = "45",
number = "8",
pages = "10013-10020",
doi = "10.1016/j.ceramint.2019.02.045"
}
Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V. R., Popović, M., Rakočević, Z. Lj., Horvath, E., Kollar, M., Nafradi, B., Schiller, A., Domanski, K., Forro, L., Pavlović, V. P.,& Janaćković, Đ. T. (2019). Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping.
Ceramics International, 45(8), 10013-10020.
https://doi.org/10.1016/j.ceramint.2019.02.045
Vujančević J, Andričević P, Bjelajac A, Đokić VR, Popović M, Rakočević ZL, Horvath E, Kollar M, Nafradi B, Schiller A, Domanski K, Forro L, Pavlović VP, Janaćković ĐT. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. Ceramics International. 2019;45(8):10013-10020
Vujančević Jelena, Andričević Pavao, Bjelajac Anđelika, Đokić Veljko R., Popović Maja, Rakočević Zlatko Lj., Horvath Endre, Kollar Marton, Nafradi Balint, Schiller Andreas, Domanski Konrad, Forro Laszlo, Pavlović Vera P., Janaćković Đorđe T., "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping" 45, no. 8 (2019):10013-10020,
https://doi.org/10.1016/j.ceramint.2019.02.045 .
3
2
1

Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping

Vujančević, Jelena; Andričević, Pavao; Bjelajac, Anđelika; Đokić, Veljko R.; Popović, Maja; Rakočević, Zlatko Lj.; Horvath, Endre; Kollar, Marton; Nafradi, Balint; Schiller, Andreas; Domanski, Konrad; Forro, Laszlo; Pavlović, Vera P.; Janaćković, Đorđe T.

(2019)

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Bjelajac, Anđelika
AU  - Đokić, Veljko R.
AU  - Popović, Maja
AU  - Rakočević, Zlatko Lj.
AU  - Horvath, Endre
AU  - Kollar, Marton
AU  - Nafradi, Balint
AU  - Schiller, Andreas
AU  - Domanski, Konrad
AU  - Forro, Laszlo
AU  - Pavlović, Vera P.
AU  - Janaćković, Đorđe T.
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8539
AB  - Highly ordered, anodically grown TiO 2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 ± 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO 2 /CH 3 NH 3 PbI 3 single crystals. The N-TiO 2 /perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures. © 2019
T2  - Ceramics International
T1  - Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping
VL  - 45
IS  - 8
SP  - 10013
EP  - 10020
DO  - 10.1016/j.ceramint.2019.02.045
ER  - 
@article{
author = "Vujančević, Jelena and Andričević, Pavao and Bjelajac, Anđelika and Đokić, Veljko R. and Popović, Maja and Rakočević, Zlatko Lj. and Horvath, Endre and Kollar, Marton and Nafradi, Balint and Schiller, Andreas and Domanski, Konrad and Forro, Laszlo and Pavlović, Vera P. and Janaćković, Đorđe T.",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8539",
abstract = "Highly ordered, anodically grown TiO 2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 ± 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO 2 /CH 3 NH 3 PbI 3 single crystals. The N-TiO 2 /perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures. © 2019",
journal = "Ceramics International",
title = "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping",
volume = "45",
number = "8",
pages = "10013-10020",
doi = "10.1016/j.ceramint.2019.02.045"
}
Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V. R., Popović, M., Rakočević, Z. Lj., Horvath, E., Kollar, M., Nafradi, B., Schiller, A., Domanski, K., Forro, L., Pavlović, V. P.,& Janaćković, Đ. T. (2019). Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping.
Ceramics International, 45(8), 10013-10020.
https://doi.org/10.1016/j.ceramint.2019.02.045
Vujančević J, Andričević P, Bjelajac A, Đokić VR, Popović M, Rakočević ZL, Horvath E, Kollar M, Nafradi B, Schiller A, Domanski K, Forro L, Pavlović VP, Janaćković ĐT. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. Ceramics International. 2019;45(8):10013-10020
Vujančević Jelena, Andričević Pavao, Bjelajac Anđelika, Đokić Veljko R., Popović Maja, Rakočević Zlatko Lj., Horvath Endre, Kollar Marton, Nafradi Balint, Schiller Andreas, Domanski Konrad, Forro Laszlo, Pavlović Vera P., Janaćković Đorđe T., "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping" 45, no. 8 (2019):10013-10020,
https://doi.org/10.1016/j.ceramint.2019.02.045 .
3
2
1

The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study

Mićović, Dragana; Pagnacco, Maja C.; Banković, Predrag T.; Maletaškić, Jelena; Matović, Branko; Đokić, Veljko R.; Stojmenović, Marija

(2019)

TY  - JOUR
AU  - Mićović, Dragana
AU  - Pagnacco, Maja C.
AU  - Banković, Predrag T.
AU  - Maletaškić, Jelena
AU  - Matović, Branko
AU  - Đokić, Veljko R.
AU  - Stojmenović, Marija
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8599
AB  - Potential non-toxic pink and red ceramic pigments based on CeO2 were successfully synthesized by self-propagating room temperature method and thermally treated at 600, 900 and 1200 °C for 15 min. The structure, morphology and optical properties, as well as thermal stability of Ce1-xErxO2-δ and Ce1-xPrxO2-δ (x = 0.05) were examined. Single-phase composition of all obtained CeO2 pigments was confirmed using XRPD method and Raman spectroscopy and it was not dependent on temperature. The mechanism of structural behaviour was thoroughly examined using Raman and FTIR spectroscopy. Nanometric dimensions of the crystallites of all pigments were confirmed using XRPD, TEM and FE-SEM analysis. Colour properties were dependent on the temperature treatment, and their position in the chromaticity diagram was studied using UV/VIS spectrophotometry. Colour efficiency measurements were supplemented by colorimetric analysis. It is proved that all samples are thermally stable in the investigated temperature range (up to 1200 °C), and their potential application as environmentally friendly pigments of desired colour is confirmed.
T2  - Processing and Application of Ceramics
T1  - The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study
VL  - 13
IS  - 3
SP  - 310
EP  - 321
DO  - 10.2298/PAC1903310M
ER  - 
@article{
author = "Mićović, Dragana and Pagnacco, Maja C. and Banković, Predrag T. and Maletaškić, Jelena and Matović, Branko and Đokić, Veljko R. and Stojmenović, Marija",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8599",
abstract = "Potential non-toxic pink and red ceramic pigments based on CeO2 were successfully synthesized by self-propagating room temperature method and thermally treated at 600, 900 and 1200 °C for 15 min. The structure, morphology and optical properties, as well as thermal stability of Ce1-xErxO2-δ and Ce1-xPrxO2-δ (x = 0.05) were examined. Single-phase composition of all obtained CeO2 pigments was confirmed using XRPD method and Raman spectroscopy and it was not dependent on temperature. The mechanism of structural behaviour was thoroughly examined using Raman and FTIR spectroscopy. Nanometric dimensions of the crystallites of all pigments were confirmed using XRPD, TEM and FE-SEM analysis. Colour properties were dependent on the temperature treatment, and their position in the chromaticity diagram was studied using UV/VIS spectrophotometry. Colour efficiency measurements were supplemented by colorimetric analysis. It is proved that all samples are thermally stable in the investigated temperature range (up to 1200 °C), and their potential application as environmentally friendly pigments of desired colour is confirmed.",
journal = "Processing and Application of Ceramics",
title = "The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study",
volume = "13",
number = "3",
pages = "310-321",
doi = "10.2298/PAC1903310M"
}
Mićović, D., Pagnacco, M. C., Banković, P. T., Maletaškić, J., Matović, B., Đokić, V. R.,& Stojmenović, M. (2019). The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study.
Processing and Application of Ceramics, 13(3), 310-321.
https://doi.org/10.2298/PAC1903310M
Mićović D, Pagnacco MC, Banković PT, Maletaškić J, Matović B, Đokić VR, Stojmenović M. The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study. Processing and Application of Ceramics. 2019;13(3):310-321
Mićović Dragana, Pagnacco Maja C., Banković Predrag T., Maletaškić Jelena, Matović Branko, Đokić Veljko R., Stojmenović Marija, "The influence of short thermal treatment on structure, morphology and optical properties of Er and Pr doped ceria pigments: Comparative study" 13, no. 3 (2019):310-321,
https://doi.org/10.2298/PAC1903310M .
1
2
2

The corrosion resistance in artificial saliva of titanium and Ti-13Nb-13Zr alloy processed by high pressure torsion

Barjaktarević, Dragana R.; Bajat, Jelena B.; Cvijović-Alagić, Ivana; Dimić, Ivana; Hohenwarter, Anton; Đokić, Veljko R.; Rakin, Marko P.

(2018)

TY  - CONF
AU  - Barjaktarević, Dragana R.
AU  - Bajat, Jelena B.
AU  - Cvijović-Alagić, Ivana
AU  - Dimić, Ivana
AU  - Hohenwarter, Anton
AU  - Đokić, Veljko R.
AU  - Rakin, Marko P.
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S2452321618305730
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8164
AB  - In order to optimize and enhance the implant material properties, metallic materials may be modified by severe plastic deformation (SPD) procedures. One of the most attracting SPD methods is high-pressure torsion (HPT), which is method where deformation is obtained mainly by simple shear. In the present study ultrafine-grained titanium (UFG cpTi) and ultrafine-grained Ti-13Nb-13Zr (UFG TNZ) alloy were obtained by high pressure torsion (HPT) under a pressure of 4.1 GPa with a rotational speed of 0.2 rpm up to 5 rotations at room temperature. In order to analyse microstructure of materials before and after HPT process, scanning electron microscope (SEM) was used. The aim of this study was to determine the corrosion resistance of titanium and its alloy after HPT process. Electrochemical measurements were performed in artificial saliva with a pH value of 5.5 at 37°C, in order to simulate the oral environment. The materials were analysed by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization. All examined materials showed good corrosion resistance, but results indicate that HPT process can improves corrosion resistance. © 2018 The Authors.
C3  - Procedia Structural Integrity
T1  - The corrosion resistance in artificial saliva of titanium and Ti-13Nb-13Zr alloy processed by high pressure torsion
VL  - 13
SP  - 1834
EP  - 1839
DO  - 10.1016/j.prostr.2018.12.332
ER  - 
@conference{
author = "Barjaktarević, Dragana R. and Bajat, Jelena B. and Cvijović-Alagić, Ivana and Dimić, Ivana and Hohenwarter, Anton and Đokić, Veljko R. and Rakin, Marko P.",
year = "2018",
url = "https://linkinghub.elsevier.com/retrieve/pii/S2452321618305730, http://vinar.vin.bg.ac.rs/handle/123456789/8164",
abstract = "In order to optimize and enhance the implant material properties, metallic materials may be modified by severe plastic deformation (SPD) procedures. One of the most attracting SPD methods is high-pressure torsion (HPT), which is method where deformation is obtained mainly by simple shear. In the present study ultrafine-grained titanium (UFG cpTi) and ultrafine-grained Ti-13Nb-13Zr (UFG TNZ) alloy were obtained by high pressure torsion (HPT) under a pressure of 4.1 GPa with a rotational speed of 0.2 rpm up to 5 rotations at room temperature. In order to analyse microstructure of materials before and after HPT process, scanning electron microscope (SEM) was used. The aim of this study was to determine the corrosion resistance of titanium and its alloy after HPT process. Electrochemical measurements were performed in artificial saliva with a pH value of 5.5 at 37°C, in order to simulate the oral environment. The materials were analysed by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization. All examined materials showed good corrosion resistance, but results indicate that HPT process can improves corrosion resistance. © 2018 The Authors.",
journal = "Procedia Structural Integrity",
title = "The corrosion resistance in artificial saliva of titanium and Ti-13Nb-13Zr alloy processed by high pressure torsion",
volume = "13",
pages = "1834-1839",
doi = "10.1016/j.prostr.2018.12.332"
}
Barjaktarević, D. R., Bajat, J. B., Cvijović-Alagić, I., Dimić, I., Hohenwarter, A., Đokić, V. R.,& Rakin, M. P. (2018). The corrosion resistance in artificial saliva of titanium and Ti-13Nb-13Zr alloy processed by high pressure torsion.
Procedia Structural Integrity, 13, 1834-1839.
https://doi.org/10.1016/j.prostr.2018.12.332
Barjaktarević DR, Bajat JB, Cvijović-Alagić I, Dimić I, Hohenwarter A, Đokić VR, Rakin MP. The corrosion resistance in artificial saliva of titanium and Ti-13Nb-13Zr alloy processed by high pressure torsion. Procedia Structural Integrity. 2018;13:1834-1839
Barjaktarević Dragana R., Bajat Jelena B., Cvijović-Alagić Ivana, Dimić Ivana, Hohenwarter Anton, Đokić Veljko R., Rakin Marko P., "The corrosion resistance in artificial saliva of titanium and Ti-13Nb-13Zr alloy processed by high pressure torsion" 13 (2018):1834-1839,
https://doi.org/10.1016/j.prostr.2018.12.332 .
2
2
2

Morphology of Nanotubular Oxide Layer Formation on Titanium and Titanium Alloy Using Electrochemical Anodization

Barjaktarević, Dragana R.; Dimić, Ivana D.; Cvijović-Alagić, Ivana; Đokić, Veljko R.; Rakin, Marko P.

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

TY  - CONF
AU  - Barjaktarević, Dragana R.
AU  - Dimić, Ivana D.
AU  - Cvijović-Alagić, Ivana
AU  - Đokić, Veljko R.
AU  - Rakin, Marko P.
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8736
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
T1  - Morphology of Nanotubular Oxide Layer Formation on Titanium and Titanium Alloy Using Electrochemical Anodization
SP  - 160
EP  - 162
ER  - 
@conference{
author = "Barjaktarević, Dragana R. and Dimić, Ivana D. and Cvijović-Alagić, Ivana and Đokić, Veljko R. and Rakin, Marko P.",
year = "2018",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8736",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia",
title = "Morphology of Nanotubular Oxide Layer Formation on Titanium and Titanium Alloy Using Electrochemical Anodization",
pages = "160-162"
}
Barjaktarević, D. R., Dimić, I. D., Cvijović-Alagić, I., Đokić, V. R.,& Rakin, M. P. (2018). Morphology of Nanotubular Oxide Layer Formation on Titanium and Titanium Alloy Using Electrochemical Anodization.
Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, SerbiaBelgrade : Serbian Academy of Sciences and Arts., 160-162.
Barjaktarević DR, Dimić ID, Cvijović-Alagić I, Đokić VR, Rakin MP. Morphology of Nanotubular Oxide Layer Formation on Titanium and Titanium Alloy Using Electrochemical Anodization. Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia. 2018;:160-162
Barjaktarević Dragana R., Dimić Ivana D., Cvijović-Alagić Ivana, Đokić Veljko R., Rakin Marko P., "Morphology of Nanotubular Oxide Layer Formation on Titanium and Titanium Alloy Using Electrochemical Anodization" (2018):160-162

Efficient As(V) removal by alpha-FeOOH and alpha-FeOOH/alpha-MnO2 embedded PEG-6-arm functionalized multiwall carbon nanotubes

Budimirovic, Dragoslav; Veličković, Zlate S.; Đokić, Veljko R.; Milosavljević, Milutin; Markovski, Jasmina S.; Levic, Stem; Marinković, Aleksandar D.

(2017)

TY  - JOUR
AU  - Budimirovic, Dragoslav
AU  - Veličković, Zlate S.
AU  - Đokić, Veljko R.
AU  - Milosavljević, Milutin
AU  - Markovski, Jasmina S.
AU  - Levic, Stem
AU  - Marinković, Aleksandar D.
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1467
AB  - A novel adsorbents, 6-arm amino polyethylene glycol functionalized multiwall carbon nanotubes (PEG/MWCNT) loaded with alpha-FeOOH (Fe/PEG/MWCNT), and hybrid alpha-FeOOH/alpha-MnO2 nano-deposit (Fe-Mn/PEG/MWCNT) were used for As(V) removal. In a batch test, the influence of pH, contact time, initial ion concentration and temperature on adsorption efficiency was studied. Time-dependent adsorption was best described by pseudo-second-order kinetic model and Weber-Morris model which predicted intra-particle diffusion as a rate controlling step of overall process. Competitive kinetic study in the presence of interfering ions shows low detrimental effect on both capacity and kinetic of As(V) removal. Thermodynamic parameters showed that the adsorption was spontaneous and endothermic processes. Influences of the pH, iron oxide loading and interfering ions were modeled by using Visual MINTEQ software. High adsorption capacities: 49.39 and 59.78 mg g(-1) were obtained for Fe/- and Fe-Mn/PEG/MWCNT, respectively, and multi-cycle reusability indicated high applicability of obtained material. Two step removal process, in a batch study, was successfully performed by using PEG/MWCNT for cations removal in the first step, and Fe or Fe-Mn/PEG/MWCNT for As(V) removal in the second. (C) 2017 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
T2  - Chemical Engineering Research and Design
T1  - Efficient As(V) removal by alpha-FeOOH and alpha-FeOOH/alpha-MnO2 embedded PEG-6-arm functionalized multiwall carbon nanotubes
VL  - 119
SP  - 75
EP  - 86
DO  - 10.1016/j.cherd.2017.01.010
ER  - 
@article{
author = "Budimirovic, Dragoslav and Veličković, Zlate S. and Đokić, Veljko R. and Milosavljević, Milutin and Markovski, Jasmina S. and Levic, Stem and Marinković, Aleksandar D.",
year = "2017",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1467",
abstract = "A novel adsorbents, 6-arm amino polyethylene glycol functionalized multiwall carbon nanotubes (PEG/MWCNT) loaded with alpha-FeOOH (Fe/PEG/MWCNT), and hybrid alpha-FeOOH/alpha-MnO2 nano-deposit (Fe-Mn/PEG/MWCNT) were used for As(V) removal. In a batch test, the influence of pH, contact time, initial ion concentration and temperature on adsorption efficiency was studied. Time-dependent adsorption was best described by pseudo-second-order kinetic model and Weber-Morris model which predicted intra-particle diffusion as a rate controlling step of overall process. Competitive kinetic study in the presence of interfering ions shows low detrimental effect on both capacity and kinetic of As(V) removal. Thermodynamic parameters showed that the adsorption was spontaneous and endothermic processes. Influences of the pH, iron oxide loading and interfering ions were modeled by using Visual MINTEQ software. High adsorption capacities: 49.39 and 59.78 mg g(-1) were obtained for Fe/- and Fe-Mn/PEG/MWCNT, respectively, and multi-cycle reusability indicated high applicability of obtained material. Two step removal process, in a batch study, was successfully performed by using PEG/MWCNT for cations removal in the first step, and Fe or Fe-Mn/PEG/MWCNT for As(V) removal in the second. (C) 2017 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.",
journal = "Chemical Engineering Research and Design",
title = "Efficient As(V) removal by alpha-FeOOH and alpha-FeOOH/alpha-MnO2 embedded PEG-6-arm functionalized multiwall carbon nanotubes",
volume = "119",
pages = "75-86",
doi = "10.1016/j.cherd.2017.01.010"
}
Budimirovic, D., Veličković, Z. S., Đokić, V. R., Milosavljević, M., Markovski, J. S., Levic, S.,& Marinković, A. D. (2017). Efficient As(V) removal by alpha-FeOOH and alpha-FeOOH/alpha-MnO2 embedded PEG-6-arm functionalized multiwall carbon nanotubes.
Chemical Engineering Research and Design, 119, 75-86.
https://doi.org/10.1016/j.cherd.2017.01.010
Budimirovic D, Veličković ZS, Đokić VR, Milosavljević M, Markovski JS, Levic S, Marinković AD. Efficient As(V) removal by alpha-FeOOH and alpha-FeOOH/alpha-MnO2 embedded PEG-6-arm functionalized multiwall carbon nanotubes. Chemical Engineering Research and Design. 2017;119:75-86
Budimirovic Dragoslav, Veličković Zlate S., Đokić Veljko R., Milosavljević Milutin, Markovski Jasmina S., Levic Stem, Marinković Aleksandar D., "Efficient As(V) removal by alpha-FeOOH and alpha-FeOOH/alpha-MnO2 embedded PEG-6-arm functionalized multiwall carbon nanotubes" 119 (2017):75-86,
https://doi.org/10.1016/j.cherd.2017.01.010 .
23
28
28

Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots

Bjelajac, Anđelika; Đokić, Veljko R.; Petrovic, Rada; Bundaleski, Nenad; Socol, Gabriel; Mihailescu, Ion N.; Rakočević, Zlatko Lj.; Janaćković, Đorđe T.

(2017)

TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Đokić, Veljko R.
AU  - Petrovic, Rada
AU  - Bundaleski, Nenad
AU  - Socol, Gabriel
AU  - Mihailescu, Ion N.
AU  - Rakočević, Zlatko Lj.
AU  - Janaćković, Đorđe T.
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1786
AB  - A process of obtaining N-doped TiO2 nanotubes sensitized by CdS nanoparticles is presented, including detailed characterizations performed along the synthesis. Transparent TiO2 films consisting of nanotubes, 2.5 mu m long and of similar to 60 nm inner diameter, were obtained after anodization of a titanium film deposited onto FTO glass substrate. N-doping was achieved by annealing of TiO2 film in ammonia. X-ray Photoelectron Spectroscopy measurements showed that nitrogen was substitutionally incorporated in the TiO2 matrix, with the N:Ti concentration ratio of 1:100. The doping changed the optical properties of the material in such a way that the absorption edge was shifted from 380 nm to 507 nm, as observed from diffuse reflectance spectra. The influence of the microwave (MW) irradiation on the synthesized CdS quantum dots and their optical properties was investigated. It was shown that the diameter of CdS nanoparticles was increased due to releasing of S-2-ions from dimethyl sulfoxide (DMSO) as a consequence of the MW treatment. The (N)TiO2 films were then used as substrates for matrix assisted pulsed laser deposition of the CdS quantum dots with DMSO as a matrix. The laser parameters for the deposition were optimized in order to preserve the nanotubular structure open, the latter being an important feature of this type of photoanode. The structure obtained under optimized conditions has an additional absorption edge shift, reaching 603 nm.
T2  - Ceramics International
T1  - Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots
VL  - 43
IS  - 17
SP  - 15040
EP  - 15046
DO  - 10.1016/j.ceramint.2017.08.029
ER  - 
@article{
author = "Bjelajac, Anđelika and Đokić, Veljko R. and Petrovic, Rada and Bundaleski, Nenad and Socol, Gabriel and Mihailescu, Ion N. and Rakočević, Zlatko Lj. and Janaćković, Đorđe T.",
year = "2017",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1786",
abstract = "A process of obtaining N-doped TiO2 nanotubes sensitized by CdS nanoparticles is presented, including detailed characterizations performed along the synthesis. Transparent TiO2 films consisting of nanotubes, 2.5 mu m long and of similar to 60 nm inner diameter, were obtained after anodization of a titanium film deposited onto FTO glass substrate. N-doping was achieved by annealing of TiO2 film in ammonia. X-ray Photoelectron Spectroscopy measurements showed that nitrogen was substitutionally incorporated in the TiO2 matrix, with the N:Ti concentration ratio of 1:100. The doping changed the optical properties of the material in such a way that the absorption edge was shifted from 380 nm to 507 nm, as observed from diffuse reflectance spectra. The influence of the microwave (MW) irradiation on the synthesized CdS quantum dots and their optical properties was investigated. It was shown that the diameter of CdS nanoparticles was increased due to releasing of S-2-ions from dimethyl sulfoxide (DMSO) as a consequence of the MW treatment. The (N)TiO2 films were then used as substrates for matrix assisted pulsed laser deposition of the CdS quantum dots with DMSO as a matrix. The laser parameters for the deposition were optimized in order to preserve the nanotubular structure open, the latter being an important feature of this type of photoanode. The structure obtained under optimized conditions has an additional absorption edge shift, reaching 603 nm.",
journal = "Ceramics International",
title = "Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots",
volume = "43",
number = "17",
pages = "15040-15046",
doi = "10.1016/j.ceramint.2017.08.029"
}
Bjelajac, A., Đokić, V. R., Petrovic, R., Bundaleski, N., Socol, G., Mihailescu, I. N., Rakočević, Z. Lj.,& Janaćković, Đ. T. (2017). Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots.
Ceramics International, 43(17), 15040-15046.
https://doi.org/10.1016/j.ceramint.2017.08.029
Bjelajac A, Đokić VR, Petrovic R, Bundaleski N, Socol G, Mihailescu IN, Rakočević ZL, Janaćković ĐT. Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots. Ceramics International. 2017;43(17):15040-15046
Bjelajac Anđelika, Đokić Veljko R., Petrovic Rada, Bundaleski Nenad, Socol Gabriel, Mihailescu Ion N., Rakočević Zlatko Lj., Janaćković Đorđe T., "Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots" 43, no. 17 (2017):15040-15046,
https://doi.org/10.1016/j.ceramint.2017.08.029 .
10
10
10

Visible-light active mesoporous, nanocrystalline N,S-doped and co-doped titania photocatalysts synthesized by non-hydrolytic sol-gel route

Albrbar, Asma Juma; Đokić, Veljko R.; Bjelajac, Anđelika; Kovač, Janez; Ćirković, Jovana; Mitrić, Miodrag; Janaćković, Đorđe T.; Petrovic, Rada

(2016)

TY  - JOUR
AU  - Albrbar, Asma Juma
AU  - Đokić, Veljko R.
AU  - Bjelajac, Anđelika
AU  - Kovač, Janez
AU  - Ćirković, Jovana
AU  - Mitrić, Miodrag
AU  - Janaćković, Đorđe T.
AU  - Petrovic, Rada
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1261
AB  - Visible-light active mesoporous N,S-doped and co-doped anatase TiO2 powders were synthesized by non-hydrolytic sol-gel route, starting from TiCl4 and Ti((OPr)-Pr-i)(4) dissolved in cyclohexane or dimethyl sulfoxide, later used as a S-doping agent. After drying in an inert atmosphere, the gels were annealed at 500 degrees C for 3 h, in air or ammonia flow, later used for N-doping. The undoped titania powder, obtained by annealing in air of the cyclohexane-based gel, was also annealed in ammonia to deduce which method is more efficient for N-doping: gel or powder annealing. The post-annealing in air after annealing in ammonia was optimized to attain the best photocatalytic activity for dye degradation under simulated visible light. The size of anatase nanocrystals decreased by doping and the specific surface area of the powders increased. The XPS analysis confirmed a successful substitution of Ti4+ by S(4+) and/or S(6+), which caused a very small band-gap narrowing. The gel annealing in ammonia was much more efficient for interstitial nitrogen incorporation in TiO2 lattice than the powder annealing. The annealing in ammonia of the gel synthesized with dimethyl sulfoxide provided the highest visible-light activity owing to high specific surface area, appropriate mesoporosity and high photoabsorption due to efficient N,S co-doping. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Visible-light active mesoporous, nanocrystalline N,S-doped and co-doped titania photocatalysts synthesized by non-hydrolytic sol-gel route
VL  - 42
IS  - 15
SP  - 16718
EP  - 16728
DO  - 10.1016/j.ceramint.2016.07.144
ER  - 
@article{
author = "Albrbar, Asma Juma and Đokić, Veljko R. and Bjelajac, Anđelika and Kovač, Janez and Ćirković, Jovana and Mitrić, Miodrag and Janaćković, Đorđe T. and Petrovic, Rada",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1261",
abstract = "Visible-light active mesoporous N,S-doped and co-doped anatase TiO2 powders were synthesized by non-hydrolytic sol-gel route, starting from TiCl4 and Ti((OPr)-Pr-i)(4) dissolved in cyclohexane or dimethyl sulfoxide, later used as a S-doping agent. After drying in an inert atmosphere, the gels were annealed at 500 degrees C for 3 h, in air or ammonia flow, later used for N-doping. The undoped titania powder, obtained by annealing in air of the cyclohexane-based gel, was also annealed in ammonia to deduce which method is more efficient for N-doping: gel or powder annealing. The post-annealing in air after annealing in ammonia was optimized to attain the best photocatalytic activity for dye degradation under simulated visible light. The size of anatase nanocrystals decreased by doping and the specific surface area of the powders increased. The XPS analysis confirmed a successful substitution of Ti4+ by S(4+) and/or S(6+), which caused a very small band-gap narrowing. The gel annealing in ammonia was much more efficient for interstitial nitrogen incorporation in TiO2 lattice than the powder annealing. The annealing in ammonia of the gel synthesized with dimethyl sulfoxide provided the highest visible-light activity owing to high specific surface area, appropriate mesoporosity and high photoabsorption due to efficient N,S co-doping. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Visible-light active mesoporous, nanocrystalline N,S-doped and co-doped titania photocatalysts synthesized by non-hydrolytic sol-gel route",
volume = "42",
number = "15",
pages = "16718-16728",
doi = "10.1016/j.ceramint.2016.07.144"
}
Albrbar, A. J., Đokić, V. R., Bjelajac, A., Kovač, J., Ćirković, J., Mitrić, M., Janaćković, Đ. T.,& Petrovic, R. (2016). Visible-light active mesoporous, nanocrystalline N,S-doped and co-doped titania photocatalysts synthesized by non-hydrolytic sol-gel route.
Ceramics International, 42(15), 16718-16728.
https://doi.org/10.1016/j.ceramint.2016.07.144
Albrbar AJ, Đokić VR, Bjelajac A, Kovač J, Ćirković J, Mitrić M, Janaćković ĐT, Petrovic R. Visible-light active mesoporous, nanocrystalline N,S-doped and co-doped titania photocatalysts synthesized by non-hydrolytic sol-gel route. Ceramics International. 2016;42(15):16718-16728
Albrbar Asma Juma, Đokić Veljko R., Bjelajac Anđelika, Kovač Janez, Ćirković Jovana, Mitrić Miodrag, Janaćković Đorđe T., Petrovic Rada, "Visible-light active mesoporous, nanocrystalline N,S-doped and co-doped titania photocatalysts synthesized by non-hydrolytic sol-gel route" 42, no. 15 (2016):16718-16728,
https://doi.org/10.1016/j.ceramint.2016.07.144 .
19
19
19

Anodization of Ti-Based Materials for Biomedical Applications: a Review

Barjaktarević, Dragana R.; Cvijović-Alagić, Ivana; Dimic, Ivana D.; Đokić, Veljko R.; Rakin, Marko P.

(2016)

TY  - JOUR
AU  - Barjaktarević, Dragana R.
AU  - Cvijović-Alagić, Ivana
AU  - Dimic, Ivana D.
AU  - Đokić, Veljko R.
AU  - Rakin, Marko P.
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1709
AB  - Commercially pure titanium (cpTi) and titanium alloys are the most commonly used metallic biomaterials. Biomedical requirements for the successful usage of metallic implant materials include their high mechanical strength, low elastic modulus, excellent biocompatibility and high corrosion resistance. It is evident that the response of a biomaterial implanted into the human body depends entirely on its biocompatibility and surface properties. Therefore, in order to improve the performance of biomaterials in biological systems modification of their surface is necessary. One of most commonly used method of implant materials surface modification is electrochemical anodization and this method is reviewed in the present work. Aim of the presented review article is to explain the electrochemical anodization process and the way in which the nanotubes are formed by anodization on the metallic material surface. Influence of anodizing parameters on the nanotubes characteristics, such as nanotube diameter, length and nanotubular layer thickness, are described, as well as the anodized nanotubes influence on the material surface properties, corrosion resistance and biocompatibility.
T2  - Metallurgical and Materials Engineering
T1  - Anodization of Ti-Based Materials for Biomedical Applications: a Review
VL  - 22
IS  - 3
SP  - 129
EP  - 143
ER  - 
@article{
author = "Barjaktarević, Dragana R. and Cvijović-Alagić, Ivana and Dimic, Ivana D. and Đokić, Veljko R. and Rakin, Marko P.",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1709",
abstract = "Commercially pure titanium (cpTi) and titanium alloys are the most commonly used metallic biomaterials. Biomedical requirements for the successful usage of metallic implant materials include their high mechanical strength, low elastic modulus, excellent biocompatibility and high corrosion resistance. It is evident that the response of a biomaterial implanted into the human body depends entirely on its biocompatibility and surface properties. Therefore, in order to improve the performance of biomaterials in biological systems modification of their surface is necessary. One of most commonly used method of implant materials surface modification is electrochemical anodization and this method is reviewed in the present work. Aim of the presented review article is to explain the electrochemical anodization process and the way in which the nanotubes are formed by anodization on the metallic material surface. Influence of anodizing parameters on the nanotubes characteristics, such as nanotube diameter, length and nanotubular layer thickness, are described, as well as the anodized nanotubes influence on the material surface properties, corrosion resistance and biocompatibility.",
journal = "Metallurgical and Materials Engineering",
title = "Anodization of Ti-Based Materials for Biomedical Applications: a Review",
volume = "22",
number = "3",
pages = "129-143"
}
Barjaktarević, D. R., Cvijović-Alagić, I., Dimic, I. D., Đokić, V. R.,& Rakin, M. P. (2016). Anodization of Ti-Based Materials for Biomedical Applications: a Review.
Metallurgical and Materials Engineering, 22(3), 129-143.
Barjaktarević DR, Cvijović-Alagić I, Dimic ID, Đokić VR, Rakin MP. Anodization of Ti-Based Materials for Biomedical Applications: a Review. Metallurgical and Materials Engineering. 2016;22(3):129-143
Barjaktarević Dragana R., Cvijović-Alagić Ivana, Dimic Ivana D., Đokić Veljko R., Rakin Marko P., "Anodization of Ti-Based Materials for Biomedical Applications: a Review" 22, no. 3 (2016):129-143
6

Ex-situ sensitization of ordered TiO2 nanotubes with CdS quantum dots

Bjelajac, Anđelika; Petrovic, Rada; Nedeljković, Jovan; Đokić, Veljko R.; Radetic, Tamara; Ćirković, Jovana; Janaćković, Đorđe T.

(2015)

TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Petrovic, Rada
AU  - Nedeljković, Jovan
AU  - Đokić, Veljko R.
AU  - Radetic, Tamara
AU  - Ćirković, Jovana
AU  - Janaćković, Đorđe T.
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/506
AB  - Ordered titania nanotubes (pore diameter approximate to 90 nm and wall thickness approximate to 10 nm) were obtained by the anodization technique and used for the ex-situ deposition of cadmium sulfide quantum dots (CdS QDs) via simple immersion of titania substrates in the CdS colloid. The colloidal dispersion of CdS nanoparticles in water was obtained in the presence of the bifunctional ligand, mercapto silane, which binds to the surface of CdS providing stability to the colloid and preventing further growth of the synthesized nanoparticles. The blue-shift of the optical absorption indicated that the CdS nanoparticles were of quantum dot size. Using the effective mass model, the average particle size was calculated to be 5.4 nm. Transmission electron microscopy provided the verification for the estimated size of the nanoparticles, which was followed by performing selected area electron diffraction to determine the mixed phase (cubic and hexagonal) of the synthesized CdS QDs. Scanning electron microscopy and reflectance spectroscopy were employed to characterize the nanostructures consisting of TiO2 nanotubes with different loadings of CdS QDs (after 24 h and 72 h immersion). It was demonstrated that mercapto silane efficiently binds CdS QDs onto TiO2 nanotubes enabling Visible-light response of the obtained nanocomposites. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Ex-situ sensitization of ordered TiO2 nanotubes with CdS quantum dots
VL  - 41
IS  - 5
SP  - 7048
EP  - 7053
DO  - 10.1016/j.ceramint.2015.02.010
ER  - 
@article{
author = "Bjelajac, Anđelika and Petrovic, Rada and Nedeljković, Jovan and Đokić, Veljko R. and Radetic, Tamara and Ćirković, Jovana and Janaćković, Đorđe T.",
year = "2015",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/506",
abstract = "Ordered titania nanotubes (pore diameter approximate to 90 nm and wall thickness approximate to 10 nm) were obtained by the anodization technique and used for the ex-situ deposition of cadmium sulfide quantum dots (CdS QDs) via simple immersion of titania substrates in the CdS colloid. The colloidal dispersion of CdS nanoparticles in water was obtained in the presence of the bifunctional ligand, mercapto silane, which binds to the surface of CdS providing stability to the colloid and preventing further growth of the synthesized nanoparticles. The blue-shift of the optical absorption indicated that the CdS nanoparticles were of quantum dot size. Using the effective mass model, the average particle size was calculated to be 5.4 nm. Transmission electron microscopy provided the verification for the estimated size of the nanoparticles, which was followed by performing selected area electron diffraction to determine the mixed phase (cubic and hexagonal) of the synthesized CdS QDs. Scanning electron microscopy and reflectance spectroscopy were employed to characterize the nanostructures consisting of TiO2 nanotubes with different loadings of CdS QDs (after 24 h and 72 h immersion). It was demonstrated that mercapto silane efficiently binds CdS QDs onto TiO2 nanotubes enabling Visible-light response of the obtained nanocomposites. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Ex-situ sensitization of ordered TiO2 nanotubes with CdS quantum dots",
volume = "41",
number = "5",
pages = "7048-7053",
doi = "10.1016/j.ceramint.2015.02.010"
}
Bjelajac, A., Petrovic, R., Nedeljković, J., Đokić, V. R., Radetic, T., Ćirković, J.,& Janaćković, Đ. T. (2015). Ex-situ sensitization of ordered TiO2 nanotubes with CdS quantum dots.
Ceramics International, 41(5), 7048-7053.
https://doi.org/10.1016/j.ceramint.2015.02.010
Bjelajac A, Petrovic R, Nedeljković J, Đokić VR, Radetic T, Ćirković J, Janaćković ĐT. Ex-situ sensitization of ordered TiO2 nanotubes with CdS quantum dots. Ceramics International. 2015;41(5):7048-7053
Bjelajac Anđelika, Petrovic Rada, Nedeljković Jovan, Đokić Veljko R., Radetic Tamara, Ćirković Jovana, Janaćković Đorđe T., "Ex-situ sensitization of ordered TiO2 nanotubes with CdS quantum dots" 41, no. 5 (2015):7048-7053,
https://doi.org/10.1016/j.ceramint.2015.02.010 .
5
5
5

Tailoring self-ordering TiO2 nanotube arrays by oxidative anodization

Vujančević, Jelena; Đokić, Veljko R.; Bjelajac, Anđelika; Pavlović, Vera P.; Mitrić, Miodrag; Janaćković, Đorđe T.; Pavlović, Vladimir B.

(Belgrade : Institute of Technical Sciences of SASA, 2015)

TY  - CONF
AU  - Vujančević, Jelena
AU  - Đokić, Veljko R.
AU  - Bjelajac, Anđelika
AU  - Pavlović, Vera P.
AU  - Mitrić, Miodrag
AU  - Janaćković, Đorđe T.
AU  - Pavlović, Vladimir B.
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/841
UR  - http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/1121
UR  - http://www.itn.sanu.ac.rs/opus4/files/1121/Vujancevic-14YRC.pdf
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7545
AB  - Having in mind that anodic oxidation method can be used for tailoring desired structure and morphology of TiO2, herein the synthesis of self-ordered TiO2 nanotubes via electrochemical anodization of high purity Ti foil is reported. The influence of synthesis parameters such as oxidative voltage, different electrolyte, annealing temperature and annealing atmosphere were explored and correlate with obtained TiO2 nanotube arrays. The results show that applied potential is the main factor that controls the diameter of the nanotubes, while annealing temperature influence on crystal type and morphology is related to different contents of electrolyte. Investigated method gives opportunity to enhanced performance of TiO2 nanotubes, providing many applications in different field.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia
T1  - Tailoring self-ordering TiO2 nanotube arrays by oxidative anodization
SP  - 18
EP  - 18
ER  - 
@conference{
author = "Vujančević, Jelena and Đokić, Veljko R. and Bjelajac, Anđelika and Pavlović, Vera P. and Mitrić, Miodrag and Janaćković, Đorđe T. and Pavlović, Vladimir B.",
year = "2015",
url = "http://dais.sanu.ac.rs/123456789/841, http://www.itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/1121, http://www.itn.sanu.ac.rs/opus4/files/1121/Vujancevic-14YRC.pdf, http://vinar.vin.bg.ac.rs/handle/123456789/7545",
abstract = "Having in mind that anodic oxidation method can be used for tailoring desired structure and morphology of TiO2, herein the synthesis of self-ordered TiO2 nanotubes via electrochemical anodization of high purity Ti foil is reported. The influence of synthesis parameters such as oxidative voltage, different electrolyte, annealing temperature and annealing atmosphere were explored and correlate with obtained TiO2 nanotube arrays. The results show that applied potential is the main factor that controls the diameter of the nanotubes, while annealing temperature influence on crystal type and morphology is related to different contents of electrolyte. Investigated method gives opportunity to enhanced performance of TiO2 nanotubes, providing many applications in different field.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia",
title = "Tailoring self-ordering TiO2 nanotube arrays by oxidative anodization",
pages = "18-18"
}
Vujančević, J., Đokić, V. R., Bjelajac, A., Pavlović, V. P., Mitrić, M., Janaćković, Đ. T.,& Pavlović, V. B. (2015). Tailoring self-ordering TiO2 nanotube arrays by oxidative anodization.
Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, SerbiaBelgrade : Institute of Technical Sciences of SASA., 18-18.
Vujančević J, Đokić VR, Bjelajac A, Pavlović VP, Mitrić M, Janaćković ĐT, Pavlović VB. Tailoring self-ordering TiO2 nanotube arrays by oxidative anodization. Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia. 2015;:18-18
Vujančević Jelena, Đokić Veljko R., Bjelajac Anđelika, Pavlović Vera P., Mitrić Miodrag, Janaćković Đorđe T., Pavlović Vladimir B., "Tailoring self-ordering TiO2 nanotube arrays by oxidative anodization" (2015):18-18

Ultrasonic assisted arsenate adsorption on solvothermally synthesized calcite modified by goethite, alpha-MnO2 and goethite/alpha-MnO2

Markovski, Jasmina S.; Đokić, Veljko R.; Milosavljevic, Milutin; Mitrić, Miodrag; Perić-Grujić, Aleksandra A.; Onjia, Antonije E.; Marinković, Aleksandar D.

(2014)

TY  - JOUR
AU  - Markovski, Jasmina S.
AU  - Đokić, Veljko R.
AU  - Milosavljevic, Milutin
AU  - Mitrić, Miodrag
AU  - Perić-Grujić, Aleksandra A.
AU  - Onjia, Antonije E.
AU  - Marinković, Aleksandar D.
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5838
AB  - A highly porous calcium carbonate (calcite; sorbent 1) was used as a support for modification with alpha-FeOOH (calcite/goethite; sorbent 2), alpha-MnO2 (calcite/alpha-MnO2; sorbent 3) and alpha-FeOOH/alpha-MnO2 (calcite/goethite/alpha-MnO2; sorbent 4) in order to obtain a cheap hybrid materials for simple and effective arsenate removal from aqueous solutions. The adsorption ability of synthesized adsorbents was studied as a function of functionalization methods, pH, contact time, temperature and ultrasonic treatment. Comparison of the adsorptive effectiveness of synthesized adsorbents for arsenate removal, under ultrasound treatment and classical stirring method, has shown better performance of the former one reaching maximum adsorption capacities of 1.73, 21.00, 10.36 and 41.94 mg g(-1), for sorbents 1-4, respectively. Visual MINTEQ equilibrium speciation modeling was used for prediction of pH and interfering ion influences on arsenate adsorption. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Ultrasonics Sonochemistry
T1  - Ultrasonic assisted arsenate adsorption on solvothermally synthesized calcite modified by goethite, alpha-MnO2 and goethite/alpha-MnO2
VL  - 21
IS  - 2
SP  - 790
EP  - 801
DO  - 10.1016/j.ultsonch.2013.10.006
ER  - 
@article{
author = "Markovski, Jasmina S. and Đokić, Veljko R. and Milosavljevic, Milutin and Mitrić, Miodrag and Perić-Grujić, Aleksandra A. and Onjia, Antonije E. and Marinković, Aleksandar D.",
year = "2014",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5838",
abstract = "A highly porous calcium carbonate (calcite; sorbent 1) was used as a support for modification with alpha-FeOOH (calcite/goethite; sorbent 2), alpha-MnO2 (calcite/alpha-MnO2; sorbent 3) and alpha-FeOOH/alpha-MnO2 (calcite/goethite/alpha-MnO2; sorbent 4) in order to obtain a cheap hybrid materials for simple and effective arsenate removal from aqueous solutions. The adsorption ability of synthesized adsorbents was studied as a function of functionalization methods, pH, contact time, temperature and ultrasonic treatment. Comparison of the adsorptive effectiveness of synthesized adsorbents for arsenate removal, under ultrasound treatment and classical stirring method, has shown better performance of the former one reaching maximum adsorption capacities of 1.73, 21.00, 10.36 and 41.94 mg g(-1), for sorbents 1-4, respectively. Visual MINTEQ equilibrium speciation modeling was used for prediction of pH and interfering ion influences on arsenate adsorption. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Ultrasonics Sonochemistry",
title = "Ultrasonic assisted arsenate adsorption on solvothermally synthesized calcite modified by goethite, alpha-MnO2 and goethite/alpha-MnO2",
volume = "21",
number = "2",
pages = "790-801",
doi = "10.1016/j.ultsonch.2013.10.006"
}
Markovski, J. S., Đokić, V. R., Milosavljevic, M., Mitrić, M., Perić-Grujić, A. A., Onjia, A. E.,& Marinković, A. D. (2014). Ultrasonic assisted arsenate adsorption on solvothermally synthesized calcite modified by goethite, alpha-MnO2 and goethite/alpha-MnO2.
Ultrasonics Sonochemistry, 21(2), 790-801.
https://doi.org/10.1016/j.ultsonch.2013.10.006
Markovski JS, Đokić VR, Milosavljevic M, Mitrić M, Perić-Grujić AA, Onjia AE, Marinković AD. Ultrasonic assisted arsenate adsorption on solvothermally synthesized calcite modified by goethite, alpha-MnO2 and goethite/alpha-MnO2. Ultrasonics Sonochemistry. 2014;21(2):790-801
Markovski Jasmina S., Đokić Veljko R., Milosavljevic Milutin, Mitrić Miodrag, Perić-Grujić Aleksandra A., Onjia Antonije E., Marinković Aleksandar D., "Ultrasonic assisted arsenate adsorption on solvothermally synthesized calcite modified by goethite, alpha-MnO2 and goethite/alpha-MnO2" 21, no. 2 (2014):790-801,
https://doi.org/10.1016/j.ultsonch.2013.10.006 .
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Arsenate adsorption on waste eggshell modified by goethite, alpha-MnO2 and goethite/alpha-MnO2

Markovski, Jasmina S.; Markovic, Dana D.; Đokić, Veljko R.; Mitrić, Miodrag; Ristić, Mirjana; Onjia, Antonije E.; Marinković, Aleksandar D.

(2014)

TY  - JOUR
AU  - Markovski, Jasmina S.
AU  - Markovic, Dana D.
AU  - Đokić, Veljko R.
AU  - Mitrić, Miodrag
AU  - Ristić, Mirjana
AU  - Onjia, Antonije E.
AU  - Marinković, Aleksandar D.
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5843
AB  - An efficient adsorbents for arsenate removal was developed by modification of calcined eggshell with goethite (calcined eggshell/goethite; sorbent 1), alpha-MnO2 (calcined eggshell/alpha-MnO2; sorbent 2) and hybride system goethite/alpha-MnO2 (calcined eggshell/goethite/alpha-MnO2; sorbent 3). Methods and processes for preparation of novel adsorbents were defined and obtained materials were characterized by BET, XRD, SEM and FTIR analysis. The influence of functionalization methods, solution pH, contact time, temperature, interfering ions and initial arsenate concentration on efficiencies of arsenate adsorption were studied in a batch system. Based on the orthogonal distance regression (ODR) fitting, using R-2, MARE and RMSRE statistical criteria, Langmuir and Sips equations were chosen for description of adsorption equilibriums on sorbents 1 and 3, respectively. The maximum adsorption capacities of 33.38 mg g(-1), 13.54 mg g(-1) and 47.04 mg g(-1) for sorbents 1-3, respectively, were obtained. Time-dependent study revealed that pseudo-second-order equation fitted well the kinetic data, while the Weber Morison model predicted intra-particle diffusion as main adsorption rate controlling step. Thermodynamic parameters indicated exothermic, feasible and spontaneous nature of adsorption process on sorbents I and 3. Results of Visual MINTEQ equilibrium speciation modeling program was used for studying pH, ionic strength and interfering ions influences on arsenate adsorption. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Chemical Engineering Journal
T1  - Arsenate adsorption on waste eggshell modified by goethite, alpha-MnO2 and goethite/alpha-MnO2
VL  - 237
SP  - 430
EP  - 442
DO  - 10.1016/j.cej.2013.10.031
ER  - 
@article{
author = "Markovski, Jasmina S. and Markovic, Dana D. and Đokić, Veljko R. and Mitrić, Miodrag and Ristić, Mirjana and Onjia, Antonije E. and Marinković, Aleksandar D.",
year = "2014",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5843",
abstract = "An efficient adsorbents for arsenate removal was developed by modification of calcined eggshell with goethite (calcined eggshell/goethite; sorbent 1), alpha-MnO2 (calcined eggshell/alpha-MnO2; sorbent 2) and hybride system goethite/alpha-MnO2 (calcined eggshell/goethite/alpha-MnO2; sorbent 3). Methods and processes for preparation of novel adsorbents were defined and obtained materials were characterized by BET, XRD, SEM and FTIR analysis. The influence of functionalization methods, solution pH, contact time, temperature, interfering ions and initial arsenate concentration on efficiencies of arsenate adsorption were studied in a batch system. Based on the orthogonal distance regression (ODR) fitting, using R-2, MARE and RMSRE statistical criteria, Langmuir and Sips equations were chosen for description of adsorption equilibriums on sorbents 1 and 3, respectively. The maximum adsorption capacities of 33.38 mg g(-1), 13.54 mg g(-1) and 47.04 mg g(-1) for sorbents 1-3, respectively, were obtained. Time-dependent study revealed that pseudo-second-order equation fitted well the kinetic data, while the Weber Morison model predicted intra-particle diffusion as main adsorption rate controlling step. Thermodynamic parameters indicated exothermic, feasible and spontaneous nature of adsorption process on sorbents I and 3. Results of Visual MINTEQ equilibrium speciation modeling program was used for studying pH, ionic strength and interfering ions influences on arsenate adsorption. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Chemical Engineering Journal",
title = "Arsenate adsorption on waste eggshell modified by goethite, alpha-MnO2 and goethite/alpha-MnO2",
volume = "237",
pages = "430-442",
doi = "10.1016/j.cej.2013.10.031"
}
Markovski, J. S., Markovic, D. D., Đokić, V. R., Mitrić, M., Ristić, M., Onjia, A. E.,& Marinković, A. D. (2014). Arsenate adsorption on waste eggshell modified by goethite, alpha-MnO2 and goethite/alpha-MnO2.
Chemical Engineering Journal, 237, 430-442.
https://doi.org/10.1016/j.cej.2013.10.031
Markovski JS, Markovic DD, Đokić VR, Mitrić M, Ristić M, Onjia AE, Marinković AD. Arsenate adsorption on waste eggshell modified by goethite, alpha-MnO2 and goethite/alpha-MnO2. Chemical Engineering Journal. 2014;237:430-442
Markovski Jasmina S., Markovic Dana D., Đokić Veljko R., Mitrić Miodrag, Ristić Mirjana, Onjia Antonije E., Marinković Aleksandar D., "Arsenate adsorption on waste eggshell modified by goethite, alpha-MnO2 and goethite/alpha-MnO2" 237 (2014):430-442,
https://doi.org/10.1016/j.cej.2013.10.031 .
46
52
54

Preparation of TiO2/carbon nanotubes photocatalysts: The influence of the method of oxidation of the carbon nanotubes on the photocatalytic activity of the nanocomposites

Đokić, Veljko R.; Marinković, Aleksandar D.; Mitrić, Miodrag; Uskokovic, Petar S.; Petrovic, Rada D.; Radmilovic, Velimir R.; Janaćković, Đorđe T.

(2012)

TY  - JOUR
AU  - Đokić, Veljko R.
AU  - Marinković, Aleksandar D.
AU  - Mitrić, Miodrag
AU  - Uskokovic, Petar S.
AU  - Petrovic, Rada D.
AU  - Radmilovic, Velimir R.
AU  - Janaćković, Đorđe T.
PY  - 2012
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5085
AB  - A method for the preparation of efficient TiO2/multi-wall carbon nanotubes nanocomposite photocatalysts by precipitation of anatase TiO2 nanoparticles onto differently oxidized carbon nanotubes is presented. The precursor compound titanium(IV) bromide was hydrolyzed producing pure anatase phase TiO2 nanoparticles decorated on the surface of the oxidized carbon nanotubes. The oxidative treatment of the carbon nanotubes influenced the type, quantity and distribution of oxygen-containing functional groups, which had a significant influence on the electron transfer properties, i.e., the photocatalytic activity of the synthesized nanocomposites. The results of C.I. Reactive Orange 16 photodegradation in the presence of all the synthesized nanocomposites showed their better photocatalytic activity in comparison to the commercial photocatalyst Degussa P-25. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Preparation of TiO2/carbon nanotubes photocatalysts: The influence of the method of oxidation of the carbon nanotubes on the photocatalytic activity of the nanocomposites
VL  - 38
IS  - 8
SP  - 6123
EP  - 6129
DO  - 10.1016/j.ceramint.2012.04.060
ER  - 
@article{
author = "Đokić, Veljko R. and Marinković, Aleksandar D. and Mitrić, Miodrag and Uskokovic, Petar S. and Petrovic, Rada D. and Radmilovic, Velimir R. and Janaćković, Đorđe T.",
year = "2012",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5085",
abstract = "A method for the preparation of efficient TiO2/multi-wall carbon nanotubes nanocomposite photocatalysts by precipitation of anatase TiO2 nanoparticles onto differently oxidized carbon nanotubes is presented. The precursor compound titanium(IV) bromide was hydrolyzed producing pure anatase phase TiO2 nanoparticles decorated on the surface of the oxidized carbon nanotubes. The oxidative treatment of the carbon nanotubes influenced the type, quantity and distribution of oxygen-containing functional groups, which had a significant influence on the electron transfer properties, i.e., the photocatalytic activity of the synthesized nanocomposites. The results of C.I. Reactive Orange 16 photodegradation in the presence of all the synthesized nanocomposites showed their better photocatalytic activity in comparison to the commercial photocatalyst Degussa P-25. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Preparation of TiO2/carbon nanotubes photocatalysts: The influence of the method of oxidation of the carbon nanotubes on the photocatalytic activity of the nanocomposites",
volume = "38",
number = "8",
pages = "6123-6129",
doi = "10.1016/j.ceramint.2012.04.060"
}
Đokić, V. R., Marinković, A. D., Mitrić, M., Uskokovic, P. S., Petrovic, R. D., Radmilovic, V. R.,& Janaćković, Đ. T. (2012). Preparation of TiO2/carbon nanotubes photocatalysts: The influence of the method of oxidation of the carbon nanotubes on the photocatalytic activity of the nanocomposites.
Ceramics International, 38(8), 6123-6129.
https://doi.org/10.1016/j.ceramint.2012.04.060
Đokić VR, Marinković AD, Mitrić M, Uskokovic PS, Petrovic RD, Radmilovic VR, Janaćković ĐT. Preparation of TiO2/carbon nanotubes photocatalysts: The influence of the method of oxidation of the carbon nanotubes on the photocatalytic activity of the nanocomposites. Ceramics International. 2012;38(8):6123-6129
Đokić Veljko R., Marinković Aleksandar D., Mitrić Miodrag, Uskokovic Petar S., Petrovic Rada D., Radmilovic Velimir R., Janaćković Đorđe T., "Preparation of TiO2/carbon nanotubes photocatalysts: The influence of the method of oxidation of the carbon nanotubes on the photocatalytic activity of the nanocomposites" 38, no. 8 (2012):6123-6129,
https://doi.org/10.1016/j.ceramint.2012.04.060 .
15
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19

A study of the photocatalytic degradation of the textile dye CI Basic Yellow 28 in water using a P160 TiO2-based catalyst

Đokić, Veljko R.; Vujovic, Jelena; Marinković, Aleksandar D.; Petrovic, Rada; Janaćković, Đorđe T.; Onjia, Antonije E.; Mijin, Dušan Ž.

(2012)

TY  - JOUR
AU  - Đokić, Veljko R.
AU  - Vujovic, Jelena
AU  - Marinković, Aleksandar D.
AU  - Petrovic, Rada
AU  - Janaćković, Đorđe T.
AU  - Onjia, Antonije E.
AU  - Mijin, Dušan Ž.
PY  - 2012
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5281
AB  - The photocatalytic degradation of the synthetic textile dye CI Basic Yellow 28 (BY28) in water, using a recently synthesized P160 TiO2-based catalyst, under Osram ultra-vitalux (R) lamp (300 W) light, was studied. The effects of the operational parameters, such as initial concentration of catalyst, initial dye concentration and pH, were studied. The salt effect (NaCl, Na2CO3, Na2SO4 and NaNO3) was also investigated. It was found that the optimal concentration of catalyst is 2.0 g L-1. A pseudo first-order kinetic model was illustrated using the Langmuir-Hinshelwood mechanism and the adsorption equilibrium constant and the rate constant of the surface reaction were calculated (K-By = 6.126 L mg(-1) and k(C) = 0.272 mg L-1 min(-1), respectively). The photodegradation rate was higher in weak acidic than in high acidic and alkaline conditions. The presence of CO32- ions increased the photodegradation rate while Cl-, SO42- and NO3- decreased the reaction rate. The rate of photodegradation of BY28 was measured using UV-Vis spectroscopy.
T2  - Journal of the Serbian Chemical Society
T1  - A study of the photocatalytic degradation of the textile dye CI Basic Yellow 28 in water using a P160 TiO2-based catalyst
VL  - 77
IS  - 12
SP  - 1747
EP  - 1757
DO  - 10.2298/JSC121015130D
ER  - 
@article{
author = "Đokić, Veljko R. and Vujovic, Jelena and Marinković, Aleksandar D. and Petrovic, Rada and Janaćković, Đorđe T. and Onjia, Antonije E. and Mijin, Dušan Ž.",
year = "2012",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5281",
abstract = "The photocatalytic degradation of the synthetic textile dye CI Basic Yellow 28 (BY28) in water, using a recently synthesized P160 TiO2-based catalyst, under Osram ultra-vitalux (R) lamp (300 W) light, was studied. The effects of the operational parameters, such as initial concentration of catalyst, initial dye concentration and pH, were studied. The salt effect (NaCl, Na2CO3, Na2SO4 and NaNO3) was also investigated. It was found that the optimal concentration of catalyst is 2.0 g L-1. A pseudo first-order kinetic model was illustrated using the Langmuir-Hinshelwood mechanism and the adsorption equilibrium constant and the rate constant of the surface reaction were calculated (K-By = 6.126 L mg(-1) and k(C) = 0.272 mg L-1 min(-1), respectively). The photodegradation rate was higher in weak acidic than in high acidic and alkaline conditions. The presence of CO32- ions increased the photodegradation rate while Cl-, SO42- and NO3- decreased the reaction rate. The rate of photodegradation of BY28 was measured using UV-Vis spectroscopy.",
journal = "Journal of the Serbian Chemical Society",
title = "A study of the photocatalytic degradation of the textile dye CI Basic Yellow 28 in water using a P160 TiO2-based catalyst",
volume = "77",
number = "12",
pages = "1747-1757",
doi = "10.2298/JSC121015130D"
}
Đokić, V. R., Vujovic, J., Marinković, A. D., Petrovic, R., Janaćković, Đ. T., Onjia, A. E.,& Mijin, D. Ž. (2012). A study of the photocatalytic degradation of the textile dye CI Basic Yellow 28 in water using a P160 TiO2-based catalyst.
Journal of the Serbian Chemical Society, 77(12), 1747-1757.
https://doi.org/10.2298/JSC121015130D
Đokić VR, Vujovic J, Marinković AD, Petrovic R, Janaćković ĐT, Onjia AE, Mijin DŽ. A study of the photocatalytic degradation of the textile dye CI Basic Yellow 28 in water using a P160 TiO2-based catalyst. Journal of the Serbian Chemical Society. 2012;77(12):1747-1757
Đokić Veljko R., Vujovic Jelena, Marinković Aleksandar D., Petrovic Rada, Janaćković Đorđe T., Onjia Antonije E., Mijin Dušan Ž., "A study of the photocatalytic degradation of the textile dye CI Basic Yellow 28 in water using a P160 TiO2-based catalyst" 77, no. 12 (2012):1747-1757,
https://doi.org/10.2298/JSC121015130D .
11
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12