TY  - JOUR
AU  - Simović, Bojana
AU  - Poleti, Dejan
AU  - Golubović, Aleksandar
AU  - Matković, Aleksandar
AU  - Šćepanović, Maja
AU  - Babić, Biljana M.
AU  - Branković, Goran
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5817
AB  - In this work, Zn(CH3 COO)(2) 2 H-2 O with AgNO3 content from 0 to 6 mol% was solvothermally treated at 120 C for 18 h in the presence of poly(vinyl pyrrolidone), ethylene glycol and sodium hydroxide. The structural , microstructural and photocatalytic properties of the unmodified and Ag modified ZnO powders have been investigated by the XRPD, FESEM, TEM, UV-vis, Raman and BET techniques. The Ag modified samples consist of ZnO nanocrystals and metallic Ag on the surface. The average crystallite size of all samples was about 20 nm. The FESEM revealed the uniformity in size and approximately spherical shape of ZnO nanopar-ticles. The BET data suggest that all prepared samples are mesoporous. All prepared samples showed higher photocatalytic efficiency in the degradation of the Reactive Orange 16 (RO16) azo dye than the commercial ZnO. In addition, Ag modified ZnO powders, especially those with 1.5 and 0.75 mol% of Ag, were more efficient than the unmodified one.
PB  - Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad
T2  - Processing and Application of Ceramics
T1  - Enhanced photocatalytic degradation of RO16 dye using Ag modified ZnO nanopowders prepared by the solvothermal method
EP  - 38
IS  - 1
SP  - 27
VL  - 11
DO  - 10.2298/PAC1701027S
ER  - 

@article{
author = "Simović, Bojana and Poleti, Dejan and Golubović, Aleksandar and Matković, Aleksandar and Šćepanović, Maja and Babić, Biljana M. and Branković, Goran",
year = "2017",
abstract = "In this work, Zn(CH3 COO)(2) 2 H-2 O with AgNO3 content from 0 to 6 mol% was solvothermally treated at 120 C for 18 h in the presence of poly(vinyl pyrrolidone), ethylene glycol and sodium hydroxide. The structural , microstructural and photocatalytic properties of the unmodified and Ag modified ZnO powders have been investigated by the XRPD, FESEM, TEM, UV-vis, Raman and BET techniques. The Ag modified samples consist of ZnO nanocrystals and metallic Ag on the surface. The average crystallite size of all samples was about 20 nm. The FESEM revealed the uniformity in size and approximately spherical shape of ZnO nanopar-ticles. The BET data suggest that all prepared samples are mesoporous. All prepared samples showed higher photocatalytic efficiency in the degradation of the Reactive Orange 16 (RO16) azo dye than the commercial ZnO. In addition, Ag modified ZnO powders, especially those with 1.5 and 0.75 mol% of Ag, were more efficient than the unmodified one.",
publisher = "Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad",
journal = "Processing and Application of Ceramics",
title = "Enhanced photocatalytic degradation of RO16 dye using Ag modified ZnO nanopowders prepared by the solvothermal method",
pages = "38-27",
number = "1",
volume = "11",
doi = "10.2298/PAC1701027S"
}

Simović, B., Poleti, D., Golubović, A., Matković, A., Šćepanović, M., Babić, B. M.,& Branković, G.. (2017). Enhanced photocatalytic degradation of RO16 dye using Ag modified ZnO nanopowders prepared by the solvothermal method. in Processing and Application of Ceramics
Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad., 11(1), 27-38.
https://doi.org/10.2298/PAC1701027S

Simović B, Poleti D, Golubović A, Matković A, Šćepanović M, Babić BM, Branković G. Enhanced photocatalytic degradation of RO16 dye using Ag modified ZnO nanopowders prepared by the solvothermal method. in Processing and Application of Ceramics. 2017;11(1):27-38.
doi:10.2298/PAC1701027S .

Simović, Bojana, Poleti, Dejan, Golubović, Aleksandar, Matković, Aleksandar, Šćepanović, Maja, Babić, Biljana M., Branković, Goran, "Enhanced photocatalytic degradation of RO16 dye using Ag modified ZnO nanopowders prepared by the solvothermal method" in Processing and Application of Ceramics, 11, no. 1 (2017):27-38,
https://doi.org/10.2298/PAC1701027S . .

TY  - JOUR
AU  - Golubović, Aleksandar
AU  - Simović, Bojana
AU  - Gašić, Slavica
AU  - Mijin, Dušan
AU  - Matković, Aleksandar
AU  - Babić, Biljana M.
AU  - Scepanović, Maja
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3628
AB  - TiO2 nanopowders were produced by sol-gel technique using TiCl4 as a starting material. For the preparation of crystalline anatase with developed surface area, this aqueous solution has been mixed with 0.05 M or 0.07 M (NH4)(2)SO4 solution in a temperature-controlled bath. The pH values of the suspension were 7, 8 or 9. According to the x-ray diffraction (XRD) analysis the anatase crystallite sizes were about 12 nm, which coincided with the average particle size revealed by scanning electron microscopy (SEM). The Raman scattering measurements have shown the presence of a small amount of highly disordered brookite phase in addition to dominant anatase phase with similar nanostructure in all synthesized powders. BET measurements revealed that all synthesized catalysts were fully mesoporous, except the sample synthesized with 0.07 M (NH4)(2)SO4 at pH=9, which had small amount of micropores. The photocatalytic degradation of herbicide Clomazone was carried out for both the pure active substance and as the commercial product (GAMIT 4-EC) under UV irradiation. The best photocatalytic efficiency was obtained for the catalyst with the largest specific surface area, confirming this parameter as crucial for enhanced photocatalytic degradation of the pure active substance and commercial product of herbicide Clomazone.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Sol-gel Synthesis of Anatase Nanopowders for Efficient Photocatalytic Degradation of Herbicide Clomazone in Aqueous Media
EP  - 330
IS  - 3
SP  - 319
VL  - 49
DO  - 10.2298/SOS1703319G
ER  - 

@article{
author = "Golubović, Aleksandar and Simović, Bojana and Gašić, Slavica and Mijin, Dušan and Matković, Aleksandar and Babić, Biljana M. and Scepanović, Maja",
year = "2017",
abstract = "TiO2 nanopowders were produced by sol-gel technique using TiCl4 as a starting material. For the preparation of crystalline anatase with developed surface area, this aqueous solution has been mixed with 0.05 M or 0.07 M (NH4)(2)SO4 solution in a temperature-controlled bath. The pH values of the suspension were 7, 8 or 9. According to the x-ray diffraction (XRD) analysis the anatase crystallite sizes were about 12 nm, which coincided with the average particle size revealed by scanning electron microscopy (SEM). The Raman scattering measurements have shown the presence of a small amount of highly disordered brookite phase in addition to dominant anatase phase with similar nanostructure in all synthesized powders. BET measurements revealed that all synthesized catalysts were fully mesoporous, except the sample synthesized with 0.07 M (NH4)(2)SO4 at pH=9, which had small amount of micropores. The photocatalytic degradation of herbicide Clomazone was carried out for both the pure active substance and as the commercial product (GAMIT 4-EC) under UV irradiation. The best photocatalytic efficiency was obtained for the catalyst with the largest specific surface area, confirming this parameter as crucial for enhanced photocatalytic degradation of the pure active substance and commercial product of herbicide Clomazone.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Sol-gel Synthesis of Anatase Nanopowders for Efficient Photocatalytic Degradation of Herbicide Clomazone in Aqueous Media",
pages = "330-319",
number = "3",
volume = "49",
doi = "10.2298/SOS1703319G"
}

Golubović, A., Simović, B., Gašić, S., Mijin, D., Matković, A., Babić, B. M.,& Scepanović, M.. (2017). Sol-gel Synthesis of Anatase Nanopowders for Efficient Photocatalytic Degradation of Herbicide Clomazone in Aqueous Media. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 49(3), 319-330.
https://doi.org/10.2298/SOS1703319G

Golubović A, Simović B, Gašić S, Mijin D, Matković A, Babić BM, Scepanović M. Sol-gel Synthesis of Anatase Nanopowders for Efficient Photocatalytic Degradation of Herbicide Clomazone in Aqueous Media. in Science of Sintering. 2017;49(3):319-330.
doi:10.2298/SOS1703319G .

Golubović, Aleksandar, Simović, Bojana, Gašić, Slavica, Mijin, Dušan, Matković, Aleksandar, Babić, Biljana M., Scepanović, Maja, "Sol-gel Synthesis of Anatase Nanopowders for Efficient Photocatalytic Degradation of Herbicide Clomazone in Aqueous Media" in Science of Sintering, 49, no. 3 (2017):319-330,
https://doi.org/10.2298/SOS1703319G . .

TY  - JOUR
AU  - Radosavljević, Kristina D.
AU  - Golubović, Aleksandar
AU  - Radisić, M. M.
AU  - Mladenović, Aleksandar R.
AU  - Mijin, Dušan
AU  - Petrović, Slobodan
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3582
AB  - Nanocrystalline TiO2, synthesized by sol-gel route and characterized by XRPD, BET and SEM measurements, was applied in the photocatalytic degradation of amoxicillin, using an Osram Ultra-Vitalux (R) lamp as the light source. Amoxicillin is a semi-synthetic penicillin type antibiotic active against a wide range of gram-positive and a limited range of gram-negative organisms. The continuous release of antibiotics and their persistence in the environment may result in serious irreversible effects on aquatic and terrestrial organisms. Heterogeneous catalysis, which uses catalysts like TiO2, is a promising route for the degradation of organic pollutants including antibiotics. The effects of initial concentration of catalyst, initial salt concentration (NaCl and Na2SO4), ethanol and pH on the photocatalytic degradation of amoxicillin were studied. The mineralization of amoxicillin was analyzed by ion chromatography as well as by total organic ana-lysis. The catalytic properties of nanocrystalline TiO2 were compared to Evonik P25 catalyst.
PB  - Savez hemijskih inženjera, Beograd
T2  - Chemical Industry & Chemical Engineering Quarterly
T1  - Amoxicillin photodegradation by nanocrystalline tio2
EP  - 195
IS  - 2
SP  - 187
VL  - 23
DO  - 10.2298/CICEQ160122030R
ER  - 

@article{
author = "Radosavljević, Kristina D. and Golubović, Aleksandar and Radisić, M. M. and Mladenović, Aleksandar R. and Mijin, Dušan and Petrović, Slobodan",
year = "2017",
abstract = "Nanocrystalline TiO2, synthesized by sol-gel route and characterized by XRPD, BET and SEM measurements, was applied in the photocatalytic degradation of amoxicillin, using an Osram Ultra-Vitalux (R) lamp as the light source. Amoxicillin is a semi-synthetic penicillin type antibiotic active against a wide range of gram-positive and a limited range of gram-negative organisms. The continuous release of antibiotics and their persistence in the environment may result in serious irreversible effects on aquatic and terrestrial organisms. Heterogeneous catalysis, which uses catalysts like TiO2, is a promising route for the degradation of organic pollutants including antibiotics. The effects of initial concentration of catalyst, initial salt concentration (NaCl and Na2SO4), ethanol and pH on the photocatalytic degradation of amoxicillin were studied. The mineralization of amoxicillin was analyzed by ion chromatography as well as by total organic ana-lysis. The catalytic properties of nanocrystalline TiO2 were compared to Evonik P25 catalyst.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Chemical Industry & Chemical Engineering Quarterly",
title = "Amoxicillin photodegradation by nanocrystalline tio2",
pages = "195-187",
number = "2",
volume = "23",
doi = "10.2298/CICEQ160122030R"
}

Radosavljević, K. D., Golubović, A., Radisić, M. M., Mladenović, A. R., Mijin, D.,& Petrović, S.. (2017). Amoxicillin photodegradation by nanocrystalline tio2. in Chemical Industry & Chemical Engineering Quarterly
Savez hemijskih inženjera, Beograd., 23(2), 187-195.
https://doi.org/10.2298/CICEQ160122030R

Radosavljević KD, Golubović A, Radisić MM, Mladenović AR, Mijin D, Petrović S. Amoxicillin photodegradation by nanocrystalline tio2. in Chemical Industry & Chemical Engineering Quarterly. 2017;23(2):187-195.
doi:10.2298/CICEQ160122030R .

Radosavljević, Kristina D., Golubović, Aleksandar, Radisić, M. M., Mladenović, Aleksandar R., Mijin, Dušan, Petrović, Slobodan, "Amoxicillin photodegradation by nanocrystalline tio2" in Chemical Industry & Chemical Engineering Quarterly, 23, no. 2 (2017):187-195,
https://doi.org/10.2298/CICEQ160122030R . .

TY  - JOUR
AU  - Golubović, Aleksandar
AU  - Veljković, Ivana
AU  - Scepanović, Maja
AU  - Grujić-Brojčin, Mirjana
AU  - Tomić, Nataša M.
AU  - Mijin, Dušan
AU  - Babić, Biljana M.
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3436
AB  - Titanium dioxide (TiO2) nanopowders were produced by sol-gel technique from tetrabutyl titanate as a precursor by varying some parameters of the sol-gel synthesis, such as temperature (500 and 550 degrees C) and the duration of calcination (1.5, 2 and 2.5 h). X-ray powder diffraction (XRPD) results have shown that all synthesized nanopowders were dominantly in the anatase phase, with the presence of a small amount of rutile in samples calcined at 550 degrees C. According to the results obtained by the Williamson-Hall method, the anatase crystallite size was increased with the duration of the calcination (from 24 to 29 nm in samples calcined at lower temperature, and from 30 to 35 nm in samples calcined at higher temperature). The analysis of the shift and line-width of the most intensive anatase Eg Raman mode confirmed the XRPD results. The analysis of pore structure from nitrogen sorption experimental data described all samples as mesoporous, with mean pore diameters in the range of 5-8 nm. Nanopowder properties have been related to the photocatalytic activity, tested in degradation of the textile dye (C.I. Reactive Orange 16), car-bofuran ray scattering.
PB  - Savez hemijskih inženjera, Beograd
T2  - Chemical Industry & Chemical Engineering Quarterly
T1  - Influence of some sol-gel synthesis parameters of mesoporous tio2 on photocatalytic degradation of pollutants
EP  - 73
IS  - 1
SP  - 65
VL  - 22
DO  - 10.2298/CICEQ150110020G
ER  - 

@article{
author = "Golubović, Aleksandar and Veljković, Ivana and Scepanović, Maja and Grujić-Brojčin, Mirjana and Tomić, Nataša M. and Mijin, Dušan and Babić, Biljana M.",
year = "2016",
abstract = "Titanium dioxide (TiO2) nanopowders were produced by sol-gel technique from tetrabutyl titanate as a precursor by varying some parameters of the sol-gel synthesis, such as temperature (500 and 550 degrees C) and the duration of calcination (1.5, 2 and 2.5 h). X-ray powder diffraction (XRPD) results have shown that all synthesized nanopowders were dominantly in the anatase phase, with the presence of a small amount of rutile in samples calcined at 550 degrees C. According to the results obtained by the Williamson-Hall method, the anatase crystallite size was increased with the duration of the calcination (from 24 to 29 nm in samples calcined at lower temperature, and from 30 to 35 nm in samples calcined at higher temperature). The analysis of the shift and line-width of the most intensive anatase Eg Raman mode confirmed the XRPD results. The analysis of pore structure from nitrogen sorption experimental data described all samples as mesoporous, with mean pore diameters in the range of 5-8 nm. Nanopowder properties have been related to the photocatalytic activity, tested in degradation of the textile dye (C.I. Reactive Orange 16), car-bofuran ray scattering.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Chemical Industry & Chemical Engineering Quarterly",
title = "Influence of some sol-gel synthesis parameters of mesoporous tio2 on photocatalytic degradation of pollutants",
pages = "73-65",
number = "1",
volume = "22",
doi = "10.2298/CICEQ150110020G"
}

Golubović, A., Veljković, I., Scepanović, M., Grujić-Brojčin, M., Tomić, N. M., Mijin, D.,& Babić, B. M.. (2016). Influence of some sol-gel synthesis parameters of mesoporous tio2 on photocatalytic degradation of pollutants. in Chemical Industry & Chemical Engineering Quarterly
Savez hemijskih inženjera, Beograd., 22(1), 65-73.
https://doi.org/10.2298/CICEQ150110020G

Golubović A, Veljković I, Scepanović M, Grujić-Brojčin M, Tomić NM, Mijin D, Babić BM. Influence of some sol-gel synthesis parameters of mesoporous tio2 on photocatalytic degradation of pollutants. in Chemical Industry & Chemical Engineering Quarterly. 2016;22(1):65-73.
doi:10.2298/CICEQ150110020G .

Golubović, Aleksandar, Veljković, Ivana, Scepanović, Maja, Grujić-Brojčin, Mirjana, Tomić, Nataša M., Mijin, Dušan, Babić, Biljana M., "Influence of some sol-gel synthesis parameters of mesoporous tio2 on photocatalytic degradation of pollutants" in Chemical Industry & Chemical Engineering Quarterly, 22, no. 1 (2016):65-73,
https://doi.org/10.2298/CICEQ150110020G . .

TY  - JOUR
AU  - Zdravković, Jelena
AU  - Simović, Bojana
AU  - Golubović, Aleksandar
AU  - Poleti, Dejan
AU  - Veljković, Ivana
AU  - Šćepanović, Maja
AU  - Branković, Goran
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5754
AB  - The effects of common precursors used in the synthesis of CeO2 nanopowders were investigated, and the structural and spectral properties of the resulting products were compared. Two cerium (III) salts, i.e., Ce(NO3)(3)center dot 6H(2)O and CeCl3 center dot 7H(2)O, and two cerium (IV) salts, i.e., Ce (SO4)(2)center dot 4H(2)O and (NH4)(2)Ce(NO3)(6) were applied. The proposed procedures for the CeO2 preparations were realizdd using the same hydrothermal treatment conditions. The products were characterized using X-ray powder diffraction (XRD) and thermogravimetric (TG) analysis, and the morphology was determined using scanning (SEM) and transmission electron microscopy (TEM). The spectral properties of the obtained nanopowders were characterized by FT-IR, Raman scattering and UV-vis spectroscopy. The results revealed the influence of the precursors on the crystallinity, crystallite size, band gap energy, morphology and purity of the synthesized samples.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Comparative study of CeO2 nanopowders obtained by the hydrothermal method from various precursors
EP  - 1979
IS  - 2
SP  - 1970
VL  - 41
DO  - 10.1016/j.ceramint.2014.08.122
ER  - 

@article{
author = "Zdravković, Jelena and Simović, Bojana and Golubović, Aleksandar and Poleti, Dejan and Veljković, Ivana and Šćepanović, Maja and Branković, Goran",
year = "2015",
abstract = "The effects of common precursors used in the synthesis of CeO2 nanopowders were investigated, and the structural and spectral properties of the resulting products were compared. Two cerium (III) salts, i.e., Ce(NO3)(3)center dot 6H(2)O and CeCl3 center dot 7H(2)O, and two cerium (IV) salts, i.e., Ce (SO4)(2)center dot 4H(2)O and (NH4)(2)Ce(NO3)(6) were applied. The proposed procedures for the CeO2 preparations were realizdd using the same hydrothermal treatment conditions. The products were characterized using X-ray powder diffraction (XRD) and thermogravimetric (TG) analysis, and the morphology was determined using scanning (SEM) and transmission electron microscopy (TEM). The spectral properties of the obtained nanopowders were characterized by FT-IR, Raman scattering and UV-vis spectroscopy. The results revealed the influence of the precursors on the crystallinity, crystallite size, band gap energy, morphology and purity of the synthesized samples.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Comparative study of CeO2 nanopowders obtained by the hydrothermal method from various precursors",
pages = "1979-1970",
number = "2",
volume = "41",
doi = "10.1016/j.ceramint.2014.08.122"
}

Zdravković, J., Simović, B., Golubović, A., Poleti, D., Veljković, I., Šćepanović, M.,& Branković, G.. (2015). Comparative study of CeO2 nanopowders obtained by the hydrothermal method from various precursors. in Ceramics International
Elsevier Sci Ltd, Oxford., 41(2), 1970-1979.
https://doi.org/10.1016/j.ceramint.2014.08.122

Zdravković J, Simović B, Golubović A, Poleti D, Veljković I, Šćepanović M, Branković G. Comparative study of CeO2 nanopowders obtained by the hydrothermal method from various precursors. in Ceramics International. 2015;41(2):1970-1979.
doi:10.1016/j.ceramint.2014.08.122 .

Zdravković, Jelena, Simović, Bojana, Golubović, Aleksandar, Poleti, Dejan, Veljković, Ivana, Šćepanović, Maja, Branković, Goran, "Comparative study of CeO2 nanopowders obtained by the hydrothermal method from various precursors" in Ceramics International, 41, no. 2 (2015):1970-1979,
https://doi.org/10.1016/j.ceramint.2014.08.122 . .

TY  - JOUR
AU  - Golubović, Aleksandar
AU  - Simović, Bojana
AU  - Scepanović, Maja
AU  - Mijin, Dušan
AU  - Matković, Aleksandar
AU  - Grujić-Brojčin, Mirjana
AU  - Babić, Biljana M.
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2985
AB  - The titanium dioxide (TiO2) nanopowders were produced by sol-gel technique from tetrabutyl titanate as a precursor, varying the temperature of calcination (from 500 to 550 degrees C with the step of 10 degrees C). XRPD results have shown that all synthesized nanopowders are dominantly in anatase phase. The analysis of the shift and linewidth of the most intensive anatase E-g Raman mode confirmed the XRPD results and added the presence of small amount of highly disordered brookite phase in all samples. The analysis of pore structure from nitrogen sorption experimental data described all samples as mesoporous, with mean pore diameters in the range of 1.5 and 4.5 nm. Nanopowder properties have been related to the photocatalytic activity, tested in degradation of the textile dye (C.I. Reactive Orange 16). The sample calcined at temperature of 510 degrees C showed the best photocatalytic performance.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Synthesis of Anatase Nanopowders by Sol-gel Method and Influence of Temperatures of Calcination to Their Photocatalitic Properties
EP  - 49
IS  - 1
SP  - 41
VL  - 47
DO  - 10.2298/SOS1501041G
ER  - 

@article{
author = "Golubović, Aleksandar and Simović, Bojana and Scepanović, Maja and Mijin, Dušan and Matković, Aleksandar and Grujić-Brojčin, Mirjana and Babić, Biljana M.",
year = "2015",
abstract = "The titanium dioxide (TiO2) nanopowders were produced by sol-gel technique from tetrabutyl titanate as a precursor, varying the temperature of calcination (from 500 to 550 degrees C with the step of 10 degrees C). XRPD results have shown that all synthesized nanopowders are dominantly in anatase phase. The analysis of the shift and linewidth of the most intensive anatase E-g Raman mode confirmed the XRPD results and added the presence of small amount of highly disordered brookite phase in all samples. The analysis of pore structure from nitrogen sorption experimental data described all samples as mesoporous, with mean pore diameters in the range of 1.5 and 4.5 nm. Nanopowder properties have been related to the photocatalytic activity, tested in degradation of the textile dye (C.I. Reactive Orange 16). The sample calcined at temperature of 510 degrees C showed the best photocatalytic performance.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Synthesis of Anatase Nanopowders by Sol-gel Method and Influence of Temperatures of Calcination to Their Photocatalitic Properties",
pages = "49-41",
number = "1",
volume = "47",
doi = "10.2298/SOS1501041G"
}

Golubović, A., Simović, B., Scepanović, M., Mijin, D., Matković, A., Grujić-Brojčin, M.,& Babić, B. M.. (2015). Synthesis of Anatase Nanopowders by Sol-gel Method and Influence of Temperatures of Calcination to Their Photocatalitic Properties. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 47(1), 41-49.
https://doi.org/10.2298/SOS1501041G

Golubović A, Simović B, Scepanović M, Mijin D, Matković A, Grujić-Brojčin M, Babić BM. Synthesis of Anatase Nanopowders by Sol-gel Method and Influence of Temperatures of Calcination to Their Photocatalitic Properties. in Science of Sintering. 2015;47(1):41-49.
doi:10.2298/SOS1501041G .

Golubović, Aleksandar, Simović, Bojana, Scepanović, Maja, Mijin, Dušan, Matković, Aleksandar, Grujić-Brojčin, Mirjana, Babić, Biljana M., "Synthesis of Anatase Nanopowders by Sol-gel Method and Influence of Temperatures of Calcination to Their Photocatalitic Properties" in Science of Sintering, 47, no. 1 (2015):41-49,
https://doi.org/10.2298/SOS1501041G . .

TY  - JOUR
AU  - Simović, Bojana
AU  - Golubović, Aleksandar
AU  - Veljković, Ivana
AU  - Poleti, Dejan
AU  - Zdravković, Jelena D.
AU  - Mijin, Dušan
AU  - Bjelajac, Anđelika
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2702
AB  - In this work, zinc oxide powders were obtained by two different techniques: hydro- and solvothermal synthesis starting from Zn(NO3)(2) and Zn(CH3COO)(2), respectively. The influence of synthetic procedure on the structural, microstructural, thermal and photocatalytic properties of the prepared ZnO powders was investigated. Both ZnO samples were further annealed under moderate conditions (300 degrees C) to avoid grain growth and to remove traces of impurities. In all four cases, single-phase hexagonal ZnO was confirmed by X-ray powder diffraction. The morphologies of prepared ZnO powders were different and they varied from rounded nanograins to microrods. All prepared samples showed higher photocatalytic efficiency in the degradation of the textile azo dye Reactive Orange 16 (RO16) than commercial ZnO. In addition, the non-annealed samples had better photocatalytic properties than the commercial Degussa P25 TiO2 powder.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Hydro- and solvothermally-prepared ZnO and its catalytic effect on the photodegradation of Reactive Orange 16 dye
EP  - 1443
IS  - 11
SP  - 1433
VL  - 79
DO  - 10.2298/JSC140520077S
ER  - 

@article{
author = "Simović, Bojana and Golubović, Aleksandar and Veljković, Ivana and Poleti, Dejan and Zdravković, Jelena D. and Mijin, Dušan and Bjelajac, Anđelika",
year = "2014",
abstract = "In this work, zinc oxide powders were obtained by two different techniques: hydro- and solvothermal synthesis starting from Zn(NO3)(2) and Zn(CH3COO)(2), respectively. The influence of synthetic procedure on the structural, microstructural, thermal and photocatalytic properties of the prepared ZnO powders was investigated. Both ZnO samples were further annealed under moderate conditions (300 degrees C) to avoid grain growth and to remove traces of impurities. In all four cases, single-phase hexagonal ZnO was confirmed by X-ray powder diffraction. The morphologies of prepared ZnO powders were different and they varied from rounded nanograins to microrods. All prepared samples showed higher photocatalytic efficiency in the degradation of the textile azo dye Reactive Orange 16 (RO16) than commercial ZnO. In addition, the non-annealed samples had better photocatalytic properties than the commercial Degussa P25 TiO2 powder.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Hydro- and solvothermally-prepared ZnO and its catalytic effect on the photodegradation of Reactive Orange 16 dye",
pages = "1443-1433",
number = "11",
volume = "79",
doi = "10.2298/JSC140520077S"
}

Simović, B., Golubović, A., Veljković, I., Poleti, D., Zdravković, J. D., Mijin, D.,& Bjelajac, A.. (2014). Hydro- and solvothermally-prepared ZnO and its catalytic effect on the photodegradation of Reactive Orange 16 dye. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 79(11), 1433-1443.
https://doi.org/10.2298/JSC140520077S

Simović B, Golubović A, Veljković I, Poleti D, Zdravković JD, Mijin D, Bjelajac A. Hydro- and solvothermally-prepared ZnO and its catalytic effect on the photodegradation of Reactive Orange 16 dye. in Journal of the Serbian Chemical Society. 2014;79(11):1433-1443.
doi:10.2298/JSC140520077S .

Simović, Bojana, Golubović, Aleksandar, Veljković, Ivana, Poleti, Dejan, Zdravković, Jelena D., Mijin, Dušan, Bjelajac, Anđelika, "Hydro- and solvothermally-prepared ZnO and its catalytic effect on the photodegradation of Reactive Orange 16 dye" in Journal of the Serbian Chemical Society, 79, no. 11 (2014):1433-1443,
https://doi.org/10.2298/JSC140520077S . .

TY  - CONF
AU  - Kuburović, Nataša
AU  - Golubović, Aleksandar
AU  - Radović, M.
AU  - Dohcević-Mitrović, Zorana
AU  - Orlović, Aleksandar
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1740
PB  - ICT Press, Prague
C3  - Proceedings of the 6th European Meeting on Solar Chemistry & Photocatalysis: Environmental Applicati
T1  - Influence of Fe3+ on Photo catalytic Efficiency of Nanopowder-TiO2 and CeO2 - Comparative Study
EP  - 135
SP  - 135
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1740
ER  - 

@conference{
author = "Kuburović, Nataša and Golubović, Aleksandar and Radović, M. and Dohcević-Mitrović, Zorana and Orlović, Aleksandar",
year = "2010",
publisher = "ICT Press, Prague",
journal = "Proceedings of the 6th European Meeting on Solar Chemistry & Photocatalysis: Environmental Applicati",
title = "Influence of Fe3+ on Photo catalytic Efficiency of Nanopowder-TiO2 and CeO2 - Comparative Study",
pages = "135-135",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1740"
}

Kuburović, N., Golubović, A., Radović, M., Dohcević-Mitrović, Z.,& Orlović, A.. (2010). Influence of Fe3+ on Photo catalytic Efficiency of Nanopowder-TiO2 and CeO2 - Comparative Study. in Proceedings of the 6th European Meeting on Solar Chemistry & Photocatalysis: Environmental Applicati
ICT Press, Prague., 135-135.
https://hdl.handle.net/21.15107/rcub_technorep_1740

Kuburović N, Golubović A, Radović M, Dohcević-Mitrović Z, Orlović A. Influence of Fe3+ on Photo catalytic Efficiency of Nanopowder-TiO2 and CeO2 - Comparative Study. in Proceedings of the 6th European Meeting on Solar Chemistry & Photocatalysis: Environmental Applicati. 2010;:135-135.
https://hdl.handle.net/21.15107/rcub_technorep_1740 .

Kuburović, Nataša, Golubović, Aleksandar, Radović, M., Dohcević-Mitrović, Zorana, Orlović, Aleksandar, "Influence of Fe3+ on Photo catalytic Efficiency of Nanopowder-TiO2 and CeO2 - Comparative Study" in Proceedings of the 6th European Meeting on Solar Chemistry & Photocatalysis: Environmental Applicati (2010):135-135,
https://hdl.handle.net/21.15107/rcub_technorep_1740 .

TY  - JOUR
AU  - Kostić, Slobodanka
AU  - Golubović, Aleksandar
AU  - Valčić, Andreja
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5549
AB  - Ni-based superalloy single crystals were grown by different methods (gradient method and Bridgman technique with spontaneous nucleation and with seed). In all crystal growth experiments using the Bridgman technique, the temperature gradient along the vertical furnace axes was constant (G = 33.5°C/cm). The obtained single crystals were cut, mechanical and chemical polished, and chemically etched. Using a metallographic microscope, the spacing of the primary and secondary dendrites was investigated. The dendrite arm spacing (DAS) was determined using a Quantimet 500 MC. The obtained results are discussed and compared with published data.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Primary and secondary dendrite spacing of Ni-based superalloy single crystals
EP  - 69
IS  - 1
SP  - 61
VL  - 74
DO  - 10.2298/JSC0901061K
ER  - 

@article{
author = "Kostić, Slobodanka and Golubović, Aleksandar and Valčić, Andreja",
year = "2009",
abstract = "Ni-based superalloy single crystals were grown by different methods (gradient method and Bridgman technique with spontaneous nucleation and with seed). In all crystal growth experiments using the Bridgman technique, the temperature gradient along the vertical furnace axes was constant (G = 33.5°C/cm). The obtained single crystals were cut, mechanical and chemical polished, and chemically etched. Using a metallographic microscope, the spacing of the primary and secondary dendrites was investigated. The dendrite arm spacing (DAS) was determined using a Quantimet 500 MC. The obtained results are discussed and compared with published data.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Primary and secondary dendrite spacing of Ni-based superalloy single crystals",
pages = "69-61",
number = "1",
volume = "74",
doi = "10.2298/JSC0901061K"
}

Kostić, S., Golubović, A.,& Valčić, A.. (2009). Primary and secondary dendrite spacing of Ni-based superalloy single crystals. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 74(1), 61-69.
https://doi.org/10.2298/JSC0901061K

Kostić S, Golubović A, Valčić A. Primary and secondary dendrite spacing of Ni-based superalloy single crystals. in Journal of the Serbian Chemical Society. 2009;74(1):61-69.
doi:10.2298/JSC0901061K .

Kostić, Slobodanka, Golubović, Aleksandar, Valčić, Andreja, "Primary and secondary dendrite spacing of Ni-based superalloy single crystals" in Journal of the Serbian Chemical Society, 74, no. 1 (2009):61-69,
https://doi.org/10.2298/JSC0901061K . .

TY  - JOUR
AU  - Radojević, Vesna
AU  - Valčić, Andreja
AU  - Nikolić, Slobodanka
AU  - Golubović, Aleksandar
PY  - 2006
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1006
AB  - The evolution of the crystallization front from a planar to a dendritic one as a function of the G L/(Rc 0) parameter was investigated during the crystallization of Al-Cu alloys by the vertical Bridgman method. Six series of alloys with different initial compositions of Cu were solidified at different growth rates. A mathematical model for the heat transfer during vertical Bridgmen crystal growth was developed. The model was solved using the finite element method. The temperature gradient in the melt at the beginning of crystal growth was calculated using the obtained model. Discrete stages of the crystallization front were identified in the experiments, as the ratio G L/(Rc 0) decreased.
AB  - U okviru ovog rada ispitivana je transformacija fronta kristalizacije od ravnog ka dendritnoj strukturi kao funkcija parametra GL/(Rc0) pri kristalizaciji legure Al-Cu metodom vertikalni Bridgman. U tom cilju izvedeni su eksperimenti sa šest serija uzoraka različitih početnih koncentracija i različitim brzinama rasta. Izveden je i matematički model procesa rasta kristala metodom vertikalni Bridgman korišćenjem metode konačnih elemenata. Na osnovu matematičkog modela izračunat je temperaturni gradijent u rastopu u trenutku kada započinje rast kristala. U okviru eksperimentalnog opsega sa sniženjem vrednosti parametra GL/(Rc0) dolazi do postepenog razvoja fronta kristalizacije po etapama.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - The plane-to-cellular-to-dendrite transition of the shape of the crystallization front during the crystallization of Al-Cu alloys
T1  - Prelaz sa ravnog fronta kristalizacije na ćelijski i dendritni rast kod kristalizacije legure Al-Cu
EP  - 312
IS  - 3
SP  - 303
VL  - 71
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1006
ER  - 

@article{
author = "Radojević, Vesna and Valčić, Andreja and Nikolić, Slobodanka and Golubović, Aleksandar",
year = "2006",
abstract = "The evolution of the crystallization front from a planar to a dendritic one as a function of the G L/(Rc 0) parameter was investigated during the crystallization of Al-Cu alloys by the vertical Bridgman method. Six series of alloys with different initial compositions of Cu were solidified at different growth rates. A mathematical model for the heat transfer during vertical Bridgmen crystal growth was developed. The model was solved using the finite element method. The temperature gradient in the melt at the beginning of crystal growth was calculated using the obtained model. Discrete stages of the crystallization front were identified in the experiments, as the ratio G L/(Rc 0) decreased., U okviru ovog rada ispitivana je transformacija fronta kristalizacije od ravnog ka dendritnoj strukturi kao funkcija parametra GL/(Rc0) pri kristalizaciji legure Al-Cu metodom vertikalni Bridgman. U tom cilju izvedeni su eksperimenti sa šest serija uzoraka različitih početnih koncentracija i različitim brzinama rasta. Izveden je i matematički model procesa rasta kristala metodom vertikalni Bridgman korišćenjem metode konačnih elemenata. Na osnovu matematičkog modela izračunat je temperaturni gradijent u rastopu u trenutku kada započinje rast kristala. U okviru eksperimentalnog opsega sa sniženjem vrednosti parametra GL/(Rc0) dolazi do postepenog razvoja fronta kristalizacije po etapama.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "The plane-to-cellular-to-dendrite transition of the shape of the crystallization front during the crystallization of Al-Cu alloys, Prelaz sa ravnog fronta kristalizacije na ćelijski i dendritni rast kod kristalizacije legure Al-Cu",
pages = "312-303",
number = "3",
volume = "71",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1006"
}

Radojević, V., Valčić, A., Nikolić, S.,& Golubović, A.. (2006). The plane-to-cellular-to-dendrite transition of the shape of the crystallization front during the crystallization of Al-Cu alloys. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 71(3), 303-312.
https://hdl.handle.net/21.15107/rcub_technorep_1006

Radojević V, Valčić A, Nikolić S, Golubović A. The plane-to-cellular-to-dendrite transition of the shape of the crystallization front during the crystallization of Al-Cu alloys. in Journal of the Serbian Chemical Society. 2006;71(3):303-312.
https://hdl.handle.net/21.15107/rcub_technorep_1006 .

Radojević, Vesna, Valčić, Andreja, Nikolić, Slobodanka, Golubović, Aleksandar, "The plane-to-cellular-to-dendrite transition of the shape of the crystallization front during the crystallization of Al-Cu alloys" in Journal of the Serbian Chemical Society, 71, no. 3 (2006):303-312,
https://hdl.handle.net/21.15107/rcub_technorep_1006 .

TY  - JOUR
AU  - Golubović, Aleksandar
AU  - Nikolić, Slobodanka
AU  - Đurić, Stevan
AU  - Valčić, Andreja
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5503
AB  - Ruby (Cr:Al2O3) single crystals were grown by the Czochralski technique in an argon atmosphere. The critical crystal diameter dc = 1.0 cm and the critical rate of rotation ωc = 20 rpm were calculated by equations of the hydrodynamics of the melt. The rate of crystal growth was experimentally obtained to be 2.7 mm/h. For chemical polishing, conc. H3PO4 at 593 K for an exposure of 3 hours was determined. Conc. H3PO4 at 523 K for an exposure of 3 h was found to be a suitable etching solution. The lattice parameters a = 0.47627(6) nm and c = 1.301(1) nm were determined by X-ray powder diffraction. The obtained results are discussed and compared with published data.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - The growth of ruby single crystals
T1  - Раст монокристала рубина
EP  - 95
IS  - 1
SP  - 87
VL  - 70
DO  - 10.2298/JSC0501087G
ER  - 

@article{
author = "Golubović, Aleksandar and Nikolić, Slobodanka and Đurić, Stevan and Valčić, Andreja",
year = "2005",
abstract = "Ruby (Cr:Al2O3) single crystals were grown by the Czochralski technique in an argon atmosphere. The critical crystal diameter dc = 1.0 cm and the critical rate of rotation ωc = 20 rpm were calculated by equations of the hydrodynamics of the melt. The rate of crystal growth was experimentally obtained to be 2.7 mm/h. For chemical polishing, conc. H3PO4 at 593 K for an exposure of 3 hours was determined. Conc. H3PO4 at 523 K for an exposure of 3 h was found to be a suitable etching solution. The lattice parameters a = 0.47627(6) nm and c = 1.301(1) nm were determined by X-ray powder diffraction. The obtained results are discussed and compared with published data.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "The growth of ruby single crystals, Раст монокристала рубина",
pages = "95-87",
number = "1",
volume = "70",
doi = "10.2298/JSC0501087G"
}

Golubović, A., Nikolić, S., Đurić, S.,& Valčić, A.. (2005). The growth of ruby single crystals. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 70(1), 87-95.
https://doi.org/10.2298/JSC0501087G

Golubović A, Nikolić S, Đurić S, Valčić A. The growth of ruby single crystals. in Journal of the Serbian Chemical Society. 2005;70(1):87-95.
doi:10.2298/JSC0501087G .

Golubović, Aleksandar, Nikolić, Slobodanka, Đurić, Stevan, Valčić, Andreja, "The growth of ruby single crystals" in Journal of the Serbian Chemical Society, 70, no. 1 (2005):87-95,
https://doi.org/10.2298/JSC0501087G . .

TY  - JOUR
AU  - Nikolić, Slobodanka N.
AU  - Golubović, Aleksandar
AU  - Radojević, Vesna
AU  - Valčić, Andreja
AU  - Jordović, Branka
PY  - 2004
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/668
AB  - In this paper investigation of the influence of the crystallization conditions on the interface shape during the solidification of Ni-based Superalloy by Vertical Bridgman method were investigated. The samples were undertaken of the metallographic investigation of the microstructure. The critical rate of plane-to-cellular interface transition, Rpc, was defined and calculated.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metalurgija
T1  - The influence of the interface shape on the plane-to-cellular-to-dendritic transition in superalloy based of nickel
EP  - 293
IS  - 3
SP  - 289
VL  - 10
UR  - https://hdl.handle.net/21.15107/rcub_technorep_668
ER  - 

@article{
author = "Nikolić, Slobodanka N. and Golubović, Aleksandar and Radojević, Vesna and Valčić, Andreja and Jordović, Branka",
year = "2004",
abstract = "In this paper investigation of the influence of the crystallization conditions on the interface shape during the solidification of Ni-based Superalloy by Vertical Bridgman method were investigated. The samples were undertaken of the metallographic investigation of the microstructure. The critical rate of plane-to-cellular interface transition, Rpc, was defined and calculated.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metalurgija",
title = "The influence of the interface shape on the plane-to-cellular-to-dendritic transition in superalloy based of nickel",
pages = "293-289",
number = "3",
volume = "10",
url = "https://hdl.handle.net/21.15107/rcub_technorep_668"
}

Nikolić, S. N., Golubović, A., Radojević, V., Valčić, A.,& Jordović, B.. (2004). The influence of the interface shape on the plane-to-cellular-to-dendritic transition in superalloy based of nickel. in Metalurgija
Savez inženjera metalurgije Srbije, Beograd., 10(3), 289-293.
https://hdl.handle.net/21.15107/rcub_technorep_668

Nikolić SN, Golubović A, Radojević V, Valčić A, Jordović B. The influence of the interface shape on the plane-to-cellular-to-dendritic transition in superalloy based of nickel. in Metalurgija. 2004;10(3):289-293.
https://hdl.handle.net/21.15107/rcub_technorep_668 .

Nikolić, Slobodanka N., Golubović, Aleksandar, Radojević, Vesna, Valčić, Andreja, Jordović, Branka, "The influence of the interface shape on the plane-to-cellular-to-dendritic transition in superalloy based of nickel" in Metalurgija, 10, no. 3 (2004):289-293,
https://hdl.handle.net/21.15107/rcub_technorep_668 .

TY  - JOUR
AU  - Nikolić, Slobodanka N.
AU  - Radojević, Vesna
AU  - Valčić, Andreja
AU  - Golubović, Aleksandar
PY  - 2003
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/549
AB  - This paper elaborates the investigations about influence of the cellular structure of the seed to the distance between primary dendrites, λ1 Investigations were performed on superalloy single crystals based Ni which were obtained using Bridgman method.
AB  - U okviru ovog rada izvršena su istraživanja uticaja ćelijske strukture klice na rastojanje između primarnih dendrita, λ1. Istraživanja su vršena na monokristalima superlegure na bazi Ni, koji su dobijeni rastom iz rastopa po metodi Bridgeman.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metalurgija
T1  - The influence of the cellular structure of the seed on the structure single crystal superalloy based on Ni
T1  - Uticaj ćelijske strukture klice na strukturu monokristala superlegure na bazi Ni
EP  - 84
IS  - 1
SP  - 77
VL  - 9
UR  - https://hdl.handle.net/21.15107/rcub_technorep_549
ER  - 

@article{
author = "Nikolić, Slobodanka N. and Radojević, Vesna and Valčić, Andreja and Golubović, Aleksandar",
year = "2003",
abstract = "This paper elaborates the investigations about influence of the cellular structure of the seed to the distance between primary dendrites, λ1 Investigations were performed on superalloy single crystals based Ni which were obtained using Bridgman method., U okviru ovog rada izvršena su istraživanja uticaja ćelijske strukture klice na rastojanje između primarnih dendrita, λ1. Istraživanja su vršena na monokristalima superlegure na bazi Ni, koji su dobijeni rastom iz rastopa po metodi Bridgeman.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metalurgija",
title = "The influence of the cellular structure of the seed on the structure single crystal superalloy based on Ni, Uticaj ćelijske strukture klice na strukturu monokristala superlegure na bazi Ni",
pages = "84-77",
number = "1",
volume = "9",
url = "https://hdl.handle.net/21.15107/rcub_technorep_549"
}

Nikolić, S. N., Radojević, V., Valčić, A.,& Golubović, A.. (2003). The influence of the cellular structure of the seed on the structure single crystal superalloy based on Ni. in Metalurgija
Savez inženjera metalurgije Srbije, Beograd., 9(1), 77-84.
https://hdl.handle.net/21.15107/rcub_technorep_549

Nikolić SN, Radojević V, Valčić A, Golubović A. The influence of the cellular structure of the seed on the structure single crystal superalloy based on Ni. in Metalurgija. 2003;9(1):77-84.
https://hdl.handle.net/21.15107/rcub_technorep_549 .

Nikolić, Slobodanka N., Radojević, Vesna, Valčić, Andreja, Golubović, Aleksandar, "The influence of the cellular structure of the seed on the structure single crystal superalloy based on Ni" in Metalurgija, 9, no. 1 (2003):77-84,
https://hdl.handle.net/21.15107/rcub_technorep_549 .

TY  - JOUR
AU  - Nikolić, Slobodanka N.
AU  - Radojević, Vesna
AU  - Valčić, Andreja
AU  - Golubović, Aleksandar
PY  - 2003
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/547
AB  - This paper elaborates the investigations about influence of the cellular structure of the seed to the distance between primary dendrites, λ1. Investigations were performed on superalloy single crystals based Ni which were obtained using Bridgman method.
AB  - U okviru ovog rada izvršena su istraživanja uticaja ćelijske strukture klice na rastojanje između primarnih dendrita, λ1 Istraživanja su vršena na monokristalima superlegure na bazi Ni, koji su dobijeni rastom iz rastopa po metodi Bridgman.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metalurgija
T1  - The influence of the cellular structure of the seed on the structure single crystal superalloy based on Ni
T1  - Uticaj ćelijske strukture klice na strukturu monokristala superlegure na bazi Ni
EP  - 138
IS  - 2
SP  - 131
VL  - 9
UR  - https://hdl.handle.net/21.15107/rcub_technorep_547
ER  - 

@article{
author = "Nikolić, Slobodanka N. and Radojević, Vesna and Valčić, Andreja and Golubović, Aleksandar",
year = "2003",
abstract = "This paper elaborates the investigations about influence of the cellular structure of the seed to the distance between primary dendrites, λ1. Investigations were performed on superalloy single crystals based Ni which were obtained using Bridgman method., U okviru ovog rada izvršena su istraživanja uticaja ćelijske strukture klice na rastojanje između primarnih dendrita, λ1 Istraživanja su vršena na monokristalima superlegure na bazi Ni, koji su dobijeni rastom iz rastopa po metodi Bridgman.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metalurgija",
title = "The influence of the cellular structure of the seed on the structure single crystal superalloy based on Ni, Uticaj ćelijske strukture klice na strukturu monokristala superlegure na bazi Ni",
pages = "138-131",
number = "2",
volume = "9",
url = "https://hdl.handle.net/21.15107/rcub_technorep_547"
}

Nikolić, S. N., Radojević, V., Valčić, A.,& Golubović, A.. (2003). The influence of the cellular structure of the seed on the structure single crystal superalloy based on Ni. in Metalurgija
Savez inženjera metalurgije Srbije, Beograd., 9(2), 131-138.
https://hdl.handle.net/21.15107/rcub_technorep_547

Nikolić SN, Radojević V, Valčić A, Golubović A. The influence of the cellular structure of the seed on the structure single crystal superalloy based on Ni. in Metalurgija. 2003;9(2):131-138.
https://hdl.handle.net/21.15107/rcub_technorep_547 .

Nikolić, Slobodanka N., Radojević, Vesna, Valčić, Andreja, Golubović, Aleksandar, "The influence of the cellular structure of the seed on the structure single crystal superalloy based on Ni" in Metalurgija, 9, no. 2 (2003):131-138,
https://hdl.handle.net/21.15107/rcub_technorep_547 .

TY  - JOUR
AU  - Golubović, Aleksandar
AU  - Nikolić, Slobodanka
AU  - Djurić, Stevan
AU  - Valčić, Andreja
PY  - 2001
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5363
AB  - Sapphire (Al2O3) single crystals were grown by the Czochralski technique both in air and argon atmospheres. The conditions for growing sapphire single crystals were calculated by using a combination of Reynolds and Grashof numbers. A critical crystal diameter dc = 20 mm and the critical rate of rotation ωc = 20 rpm were calculated from the hydrodynamics of the melt. The value of the rate of crystal growth was experimentally found to be 3.5 mm/h. According to our previous experiments, it was confirmed that three hours exposures to cone. H3PO4 at 593 K was suitable for chemical polishing. Also, three hours exposure to cone. H3PO4 at 523 K was found to be a suitable etching solution. The lattice parameters a = 0.47573 nm and c = 1.29893 nm were determined by X-ray powder diffraction. The obtained results are discussed and compared with published data.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - The growth of sapphire single crystals
EP  - 418
IS  - 6
SP  - 411
VL  - 66
DO  - 10.2298/jsc0106411g
ER  - 

@article{
author = "Golubović, Aleksandar and Nikolić, Slobodanka and Djurić, Stevan and Valčić, Andreja",
year = "2001",
abstract = "Sapphire (Al2O3) single crystals were grown by the Czochralski technique both in air and argon atmospheres. The conditions for growing sapphire single crystals were calculated by using a combination of Reynolds and Grashof numbers. A critical crystal diameter dc = 20 mm and the critical rate of rotation ωc = 20 rpm were calculated from the hydrodynamics of the melt. The value of the rate of crystal growth was experimentally found to be 3.5 mm/h. According to our previous experiments, it was confirmed that three hours exposures to cone. H3PO4 at 593 K was suitable for chemical polishing. Also, three hours exposure to cone. H3PO4 at 523 K was found to be a suitable etching solution. The lattice parameters a = 0.47573 nm and c = 1.29893 nm were determined by X-ray powder diffraction. The obtained results are discussed and compared with published data.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "The growth of sapphire single crystals",
pages = "418-411",
number = "6",
volume = "66",
doi = "10.2298/jsc0106411g"
}

Golubović, A., Nikolić, S., Djurić, S.,& Valčić, A.. (2001). The growth of sapphire single crystals. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 66(6), 411-418.
https://doi.org/10.2298/jsc0106411g

Golubović A, Nikolić S, Djurić S, Valčić A. The growth of sapphire single crystals. in Journal of the Serbian Chemical Society. 2001;66(6):411-418.
doi:10.2298/jsc0106411g .

Golubović, Aleksandar, Nikolić, Slobodanka, Djurić, Stevan, Valčić, Andreja, "The growth of sapphire single crystals" in Journal of the Serbian Chemical Society, 66, no. 6 (2001):411-418,
https://doi.org/10.2298/jsc0106411g . .