TY  - JOUR
AU  - Mančić, Lidija
AU  - Dugandžić, Ivan
AU  - Milošević, Olivera
AU  - Jovanović, Dragana J.
AU  - Šaponjić, Zoran
AU  - Rabanal, Maria Eugenia
AU  - Gómez-Villalba, Luz Stella
PY  - 2015
UR  - http://dais.sanu.ac.rs/123456789/645
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7503
AB  - Hierarchically assembled TiO2 nanoparticles into larger spherical ones were obtained using aerosol-assisted processing method. Unagglomerated particles with the mean size of 440 nm were obtained from colloidal solution of TiO2 nanoparticles (~4.5 nm) using ultrasonic spray pyrolysis at 550°C. Their morphological complexity and structural polymorphism were investigated by using X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and transmission electron microscopy (TEM) coupled with selected area electron diffraction (SAED) analysis. Pronounced evolution of nanocrystalline TiO2(B) phase assembled together with the anatase building units (sized ~15 nm) in uniform submicrometric particles implicate their feasibility to be used in dye-sensitised solar cells and lithium ion batteries.
PB  - Bucks, UK : INDERSCIENCE Publishers
T2  - International Journal of Materials and Product Technology
T1  - Aerosol-assisted processing of hierarchically organised TiO2 nanoparticles
SP  - 221
EP  - 229
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7503
ER  - 

@article{
author = "Mančić, Lidija and Dugandžić, Ivan and Milošević, Olivera and Jovanović, Dragana J. and Šaponjić, Zoran and Rabanal, Maria Eugenia and Gómez-Villalba, Luz Stella",
year = "2015",
abstract = "Hierarchically assembled TiO2 nanoparticles into larger spherical ones were obtained using aerosol-assisted processing method. Unagglomerated particles with the mean size of 440 nm were obtained from colloidal solution of TiO2 nanoparticles (~4.5 nm) using ultrasonic spray pyrolysis at 550°C. Their morphological complexity and structural polymorphism were investigated by using X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and transmission electron microscopy (TEM) coupled with selected area electron diffraction (SAED) analysis. Pronounced evolution of nanocrystalline TiO2(B) phase assembled together with the anatase building units (sized ~15 nm) in uniform submicrometric particles implicate their feasibility to be used in dye-sensitised solar cells and lithium ion batteries.",
publisher = "Bucks, UK : INDERSCIENCE Publishers",
journal = "International Journal of Materials and Product Technology",
title = "Aerosol-assisted processing of hierarchically organised TiO2 nanoparticles",
pages = "221-229",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7503"
}

Mančić, L., Dugandžić, I., Milošević, O., Jovanović, D. J., Šaponjić, Z., Rabanal, M. E.,& Gómez-Villalba, L. S.. (2015). Aerosol-assisted processing of hierarchically organised TiO2 nanoparticles. in International Journal of Materials and Product Technology
Bucks, UK : INDERSCIENCE Publishers., 221-229.
https://hdl.handle.net/21.15107/rcub_vinar_7503

Mančić L, Dugandžić I, Milošević O, Jovanović DJ, Šaponjić Z, Rabanal ME, Gómez-Villalba LS. Aerosol-assisted processing of hierarchically organised TiO2 nanoparticles. in International Journal of Materials and Product Technology. 2015;:221-229.
https://hdl.handle.net/21.15107/rcub_vinar_7503 .

Mančić, Lidija, Dugandžić, Ivan, Milošević, Olivera, Jovanović, Dragana J., Šaponjić, Zoran, Rabanal, Maria Eugenia, Gómez-Villalba, Luz Stella, "Aerosol-assisted processing of hierarchically organised TiO2 nanoparticles" in International Journal of Materials and Product Technology (2015):221-229,
https://hdl.handle.net/21.15107/rcub_vinar_7503 .

TY  - JOUR
AU  - Jovanović, Dragana J.
AU  - Dugandžić, Ivan
AU  - Ćirić-Marjanović, Gordana N.
AU  - Radetić, Tamara
AU  - Ahrenkiel, Scott Phillip
AU  - Milošević, Olivera
AU  - Nedeljković, Jovan
AU  - Šaponjić, Zoran
AU  - Mančić, Lidija
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/771
AB  - We report on the possibility to build hierarchically organized three-dimensional (3D) titania spherical particles having high surface-to-volume-ratio, by aerosol processing of nanotubular building blocks. Morphology and crystal structure of titania based spherical assemblies, obtained in the temperature range from 150 to 650 degrees C, were characterized by means of scanning and transmission electron microscopy, x-ray powder diffraction and Raman spectroscopy. Initial shape of 1D building units, nanotubes, was well preserved in the spherical assemblies processed at 150 and 450 degrees C. Processing at 650 degrees C resulted in a collapse of the nanotubular building blocks and formation of the assemblies of irregularly shaped TiO2 nanoparticles. Structural analysis revealed several phase transitions in titania spherical assemblies in course with the temperature increase indicating possibility of in-situ phase composition adjustment during aerosol processing. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Spherical assemblies of titania nanotubes generated through aerosol processing
VL  - 41
IS  - 10
SP  - 14754
EP  - 14759
DO  - 10.1016/j.ceramint.2015.07.205
ER  - 

@article{
author = "Jovanović, Dragana J. and Dugandžić, Ivan and Ćirić-Marjanović, Gordana N. and Radetić, Tamara and Ahrenkiel, Scott Phillip and Milošević, Olivera and Nedeljković, Jovan and Šaponjić, Zoran and Mančić, Lidija",
year = "2015",
abstract = "We report on the possibility to build hierarchically organized three-dimensional (3D) titania spherical particles having high surface-to-volume-ratio, by aerosol processing of nanotubular building blocks. Morphology and crystal structure of titania based spherical assemblies, obtained in the temperature range from 150 to 650 degrees C, were characterized by means of scanning and transmission electron microscopy, x-ray powder diffraction and Raman spectroscopy. Initial shape of 1D building units, nanotubes, was well preserved in the spherical assemblies processed at 150 and 450 degrees C. Processing at 650 degrees C resulted in a collapse of the nanotubular building blocks and formation of the assemblies of irregularly shaped TiO2 nanoparticles. Structural analysis revealed several phase transitions in titania spherical assemblies in course with the temperature increase indicating possibility of in-situ phase composition adjustment during aerosol processing. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Spherical assemblies of titania nanotubes generated through aerosol processing",
volume = "41",
number = "10",
pages = "14754-14759",
doi = "10.1016/j.ceramint.2015.07.205"
}

Jovanović, D. J., Dugandžić, I., Ćirić-Marjanović, G. N., Radetić, T., Ahrenkiel, S. P., Milošević, O., Nedeljković, J., Šaponjić, Z.,& Mančić, L.. (2015). Spherical assemblies of titania nanotubes generated through aerosol processing. in Ceramics International, 41(10), 14754-14759.
https://doi.org/10.1016/j.ceramint.2015.07.205

Jovanović DJ, Dugandžić I, Ćirić-Marjanović GN, Radetić T, Ahrenkiel SP, Milošević O, Nedeljković J, Šaponjić Z, Mančić L. Spherical assemblies of titania nanotubes generated through aerosol processing. in Ceramics International. 2015;41(10):14754-14759.
doi:10.1016/j.ceramint.2015.07.205 .

Jovanović, Dragana J., Dugandžić, Ivan, Ćirić-Marjanović, Gordana N., Radetić, Tamara, Ahrenkiel, Scott Phillip, Milošević, Olivera, Nedeljković, Jovan, Šaponjić, Zoran, Mančić, Lidija, "Spherical assemblies of titania nanotubes generated through aerosol processing" in Ceramics International, 41, no. 10 (2015):14754-14759,
https://doi.org/10.1016/j.ceramint.2015.07.205 . .

TY  - JOUR
AU  - Mančić, Lidija
AU  - Dugandžić, Ivan
AU  - Milošević, Olivera
AU  - Jovanović, Dragana J.
AU  - Šaponjić, Zoran
AU  - Rabanal, Maria Eugenia
AU  - Gomez Villalba, Luz S.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/500
AB  - Hierarchically assembled TiO2 nanoparticles into larger spherical ones were obtained using aerosol-assisted processing method. Unagglomerated particles with the mean size of 440 nm were obtained from colloidal solution of TiO2 nanoparticles (similar to 4.5 nm) using ultrasonic spray pyrolysis at 550 degrees C. Their morphological complexity and structural polymorphism were investigated by using X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and transmission electron microscopy (TEM) coupled with selected area electron diffraction (SAED) analysis. Pronounced evolution of nanocrystalline TiO2(B) phase assembled together with the anatase building units (sized similar to 15 nm) in uniform submicrometric particles implicate their feasibility to be used in dye-sensitised solar cells and lithium ion batteries.
T2  - International Journal of Materials and Product Technology
T1  - Aerosol-assisted processing of hierarchically organised TiO2 nanoparticles
VL  - 50
IS  - 3-4
SP  - 221
EP  - 229
DO  - 10.1504/IJMPT.2015.068530
ER  - 

@article{
author = "Mančić, Lidija and Dugandžić, Ivan and Milošević, Olivera and Jovanović, Dragana J. and Šaponjić, Zoran and Rabanal, Maria Eugenia and Gomez Villalba, Luz S.",
year = "2015",
abstract = "Hierarchically assembled TiO2 nanoparticles into larger spherical ones were obtained using aerosol-assisted processing method. Unagglomerated particles with the mean size of 440 nm were obtained from colloidal solution of TiO2 nanoparticles (similar to 4.5 nm) using ultrasonic spray pyrolysis at 550 degrees C. Their morphological complexity and structural polymorphism were investigated by using X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and transmission electron microscopy (TEM) coupled with selected area electron diffraction (SAED) analysis. Pronounced evolution of nanocrystalline TiO2(B) phase assembled together with the anatase building units (sized similar to 15 nm) in uniform submicrometric particles implicate their feasibility to be used in dye-sensitised solar cells and lithium ion batteries.",
journal = "International Journal of Materials and Product Technology",
title = "Aerosol-assisted processing of hierarchically organised TiO2 nanoparticles",
volume = "50",
number = "3-4",
pages = "221-229",
doi = "10.1504/IJMPT.2015.068530"
}

Mančić, L., Dugandžić, I., Milošević, O., Jovanović, D. J., Šaponjić, Z., Rabanal, M. E.,& Gomez Villalba, L. S.. (2015). Aerosol-assisted processing of hierarchically organised TiO2 nanoparticles. in International Journal of Materials and Product Technology, 50(3-4), 221-229.
https://doi.org/10.1504/IJMPT.2015.068530

Mančić L, Dugandžić I, Milošević O, Jovanović DJ, Šaponjić Z, Rabanal ME, Gomez Villalba LS. Aerosol-assisted processing of hierarchically organised TiO2 nanoparticles. in International Journal of Materials and Product Technology. 2015;50(3-4):221-229.
doi:10.1504/IJMPT.2015.068530 .

Mančić, Lidija, Dugandžić, Ivan, Milošević, Olivera, Jovanović, Dragana J., Šaponjić, Zoran, Rabanal, Maria Eugenia, Gomez Villalba, Luz S., "Aerosol-assisted processing of hierarchically organised TiO2 nanoparticles" in International Journal of Materials and Product Technology, 50, no. 3-4 (2015):221-229,
https://doi.org/10.1504/IJMPT.2015.068530 . .

TY  - CONF
AU  - Dugandžić, Ivan
AU  - Jovanović, Dragana J.
AU  - Mančić, Lidija
AU  - Šaponjić, Zoran
AU  - Nedeljković, Jovan
AU  - Milošević, Olivera
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/596
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7489
AB  - Hierarchically organized functional nanomaterials are of interest for potential use in electrochemical, catalytic and gas-sensing applications due to their unique structural organization defined on different length scales. Here we present the application of the aerosol processing route in generation of hierarchically organized nanostructured TiO2 particles. Particles are obtained by the thermal decomposition of aerosol generated by atomization of colloidal TiO2 solution with a low-intensity ultrasound generator operating at the high frequency of 1.7 MHz. By a proper choice of the precursors type and concentration, as well as processing parameters (temperature of aerosol decomposition and the residence time of droplet/particle), fine control over both the submicron- and nanometer-length scales of spherically structured TiO2 was achieved. The median diameter and the crystallite size of titania particles were found to be tunable from 350 to 450 nm and from 2.5 to 50 nm, respectively. Moreover, it was shown that the structural complexity of the particles synthesized at the lower processing temperatures might be further extended by their surface sensitization with several bidentate ligands. The results obtained demonstrate advantages of ultrasonic spray pyrolysis route in synthesis of hierarchically organized functional nanomaterials.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade
T1  - Ultrasonic Processing of Hierarchically Organized TiO2 Functional Nanomaterials
SP  - 61
EP  - 61
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7489
ER  - 

@conference{
author = "Dugandžić, Ivan and Jovanović, Dragana J. and Mančić, Lidija and Šaponjić, Zoran and Nedeljković, Jovan and Milošević, Olivera",
year = "2014",
abstract = "Hierarchically organized functional nanomaterials are of interest for potential use in electrochemical, catalytic and gas-sensing applications due to their unique structural organization defined on different length scales. Here we present the application of the aerosol processing route in generation of hierarchically organized nanostructured TiO2 particles. Particles are obtained by the thermal decomposition of aerosol generated by atomization of colloidal TiO2 solution with a low-intensity ultrasound generator operating at the high frequency of 1.7 MHz. By a proper choice of the precursors type and concentration, as well as processing parameters (temperature of aerosol decomposition and the residence time of droplet/particle), fine control over both the submicron- and nanometer-length scales of spherically structured TiO2 was achieved. The median diameter and the crystallite size of titania particles were found to be tunable from 350 to 450 nm and from 2.5 to 50 nm, respectively. Moreover, it was shown that the structural complexity of the particles synthesized at the lower processing temperatures might be further extended by their surface sensitization with several bidentate ligands. The results obtained demonstrate advantages of ultrasonic spray pyrolysis route in synthesis of hierarchically organized functional nanomaterials.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade",
title = "Ultrasonic Processing of Hierarchically Organized TiO2 Functional Nanomaterials",
pages = "61-61",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7489"
}

Dugandžić, I., Jovanović, D. J., Mančić, L., Šaponjić, Z., Nedeljković, J.,& Milošević, O.. (2014). Ultrasonic Processing of Hierarchically Organized TiO2 Functional Nanomaterials. in Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade
Belgrade : Serbian Ceramic Society., 61-61.
https://hdl.handle.net/21.15107/rcub_vinar_7489

Dugandžić I, Jovanović DJ, Mančić L, Šaponjić Z, Nedeljković J, Milošević O. Ultrasonic Processing of Hierarchically Organized TiO2 Functional Nanomaterials. in Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade. 2014;:61-61.
https://hdl.handle.net/21.15107/rcub_vinar_7489 .

Dugandžić, Ivan, Jovanović, Dragana J., Mančić, Lidija, Šaponjić, Zoran, Nedeljković, Jovan, Milošević, Olivera, "Ultrasonic Processing of Hierarchically Organized TiO2 Functional Nanomaterials" in Advanced Ceramics and Application : 3rd Serbian Ceramic Society Conference : program and the book of abstracts; September 29 - October 1, 2014; Belgrade (2014):61-61,
https://hdl.handle.net/21.15107/rcub_vinar_7489 .

TY  - JOUR
AU  - Lojpur, Vesna
AU  - Mančić, Lidija
AU  - Vulic, P.
AU  - Dramićanin, Miroslav
AU  - Rabanal, Maria Eugenia
AU  - Milošević, Olivera
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5839
AB  - Sub-micronic, spherical Y2O3:Yb/Er particles comprising clustered nano-units (70 nm) were prepared via ultrasonic spray pyrolysis from pure nitrate precursor solutions with different Yb/Er dopant ratios. The particles were additionally thermally treated at 1100 degrees C for 12, 24 and 48 h. The structural and morphological characteristics of particles were studied by X-ray powder diffraction, Fourier transform infrared spectroscopy, field-emission scanning electron microscopy, energy dispersive X-ray analysis and specific surface area (BET) and were further correlated with their advanced optical properties. For the recorded up-conversion emissions, originating from the following Er3+ transitions: [H-2(9/2) - GT I-4(15/2)] in blue (407-420 nm); [H-2(11/2), S-4(3/2) - GT I-4(15/2)] green: 510-590 nm; and [F-4(9/2) - GT I-4(15/2)] in red (640-720 nm) spectral region, the corresponding lifetimes were acquired in the wide temperature range (10-300 K). The most intense green up-conversion emission with the long decay of 550 ms is recorded for Y1.97Yb0.02Er0.01O3 particles thermally treated at 1100 degrees C for 24 h. (c) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Structural, morphological and up-converting luminescence characteristics of nanocrystalline Y2O3:Yb/Er powders obtained via spray pyrolysis
VL  - 40
IS  - 2
SP  - 3089
EP  - 3095
DO  - 10.1016/j.ceramint.2013.10.002
ER  - 

@article{
author = "Lojpur, Vesna and Mančić, Lidija and Vulic, P. and Dramićanin, Miroslav and Rabanal, Maria Eugenia and Milošević, Olivera",
year = "2014",
abstract = "Sub-micronic, spherical Y2O3:Yb/Er particles comprising clustered nano-units (70 nm) were prepared via ultrasonic spray pyrolysis from pure nitrate precursor solutions with different Yb/Er dopant ratios. The particles were additionally thermally treated at 1100 degrees C for 12, 24 and 48 h. The structural and morphological characteristics of particles were studied by X-ray powder diffraction, Fourier transform infrared spectroscopy, field-emission scanning electron microscopy, energy dispersive X-ray analysis and specific surface area (BET) and were further correlated with their advanced optical properties. For the recorded up-conversion emissions, originating from the following Er3+ transitions: [H-2(9/2) - GT I-4(15/2)] in blue (407-420 nm); [H-2(11/2), S-4(3/2) - GT I-4(15/2)] green: 510-590 nm; and [F-4(9/2) - GT I-4(15/2)] in red (640-720 nm) spectral region, the corresponding lifetimes were acquired in the wide temperature range (10-300 K). The most intense green up-conversion emission with the long decay of 550 ms is recorded for Y1.97Yb0.02Er0.01O3 particles thermally treated at 1100 degrees C for 24 h. (c) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Structural, morphological and up-converting luminescence characteristics of nanocrystalline Y2O3:Yb/Er powders obtained via spray pyrolysis",
volume = "40",
number = "2",
pages = "3089-3095",
doi = "10.1016/j.ceramint.2013.10.002"
}

Lojpur, V., Mančić, L., Vulic, P., Dramićanin, M., Rabanal, M. E.,& Milošević, O.. (2014). Structural, morphological and up-converting luminescence characteristics of nanocrystalline Y2O3:Yb/Er powders obtained via spray pyrolysis. in Ceramics International, 40(2), 3089-3095.
https://doi.org/10.1016/j.ceramint.2013.10.002

Lojpur V, Mančić L, Vulic P, Dramićanin M, Rabanal ME, Milošević O. Structural, morphological and up-converting luminescence characteristics of nanocrystalline Y2O3:Yb/Er powders obtained via spray pyrolysis. in Ceramics International. 2014;40(2):3089-3095.
doi:10.1016/j.ceramint.2013.10.002 .

Lojpur, Vesna, Mančić, Lidija, Vulic, P., Dramićanin, Miroslav, Rabanal, Maria Eugenia, Milošević, Olivera, "Structural, morphological and up-converting luminescence characteristics of nanocrystalline Y2O3:Yb/Er powders obtained via spray pyrolysis" in Ceramics International, 40, no. 2 (2014):3089-3095,
https://doi.org/10.1016/j.ceramint.2013.10.002 . .

TY  - JOUR
AU  - Mančić, Lidija
AU  - Lojpur, Vesna
AU  - Marinković, Bojan A.
AU  - de Pinho Mauricio, M. H.
AU  - Dramićanin, Miroslav
AU  - Milošević, Olivera
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/174
AB  - Rod-like and flake-like up-converting Y2O3:Yb3+/Ho3+ particles which are composed of nanoparticles with size less than 100 nm, are prepared by a simple hydrothermal processing at 473 K (3 h) followed by additional thermal treatment at 1373 K (3 and 12 h). The effect of precursor pH value on the formation of Y2O3:Yb3+/Ho3+ is followed through X-ray powder diffractometry (XRPD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Structural refinement confirms formation of the cubic bixbyte structure (S. G. Ia-3) with the non-uniform accommodation of dopants at C-2 and S-6 cationic sites. Under 978 nm laser excitation, strong green (530-570 nm) up-conversion is observed in all samples. The emission shows a decrease in intensity with an increase in external temperature, indicating FIR (fluorescence intensity ratio) based temperature sensing behavior of 0.52% for the F-5(4) - GT I-5(8)/S-5(2) - GT I-5(8) transitions. (C) 2014 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
T2  - Advanced Powder Technology
T1  - Effect of processing parameters on structural, morphological and optical Y2O3:Yb3+/Ho3+ powders characteristics
VL  - 25
IS  - 5
SP  - 1449
EP  - 1454
DO  - 10.1016/j.apt.2014.03.015
ER  - 

@article{
author = "Mančić, Lidija and Lojpur, Vesna and Marinković, Bojan A. and de Pinho Mauricio, M. H. and Dramićanin, Miroslav and Milošević, Olivera",
year = "2014",
abstract = "Rod-like and flake-like up-converting Y2O3:Yb3+/Ho3+ particles which are composed of nanoparticles with size less than 100 nm, are prepared by a simple hydrothermal processing at 473 K (3 h) followed by additional thermal treatment at 1373 K (3 and 12 h). The effect of precursor pH value on the formation of Y2O3:Yb3+/Ho3+ is followed through X-ray powder diffractometry (XRPD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Structural refinement confirms formation of the cubic bixbyte structure (S. G. Ia-3) with the non-uniform accommodation of dopants at C-2 and S-6 cationic sites. Under 978 nm laser excitation, strong green (530-570 nm) up-conversion is observed in all samples. The emission shows a decrease in intensity with an increase in external temperature, indicating FIR (fluorescence intensity ratio) based temperature sensing behavior of 0.52% for the F-5(4) - GT I-5(8)/S-5(2) - GT I-5(8) transitions. (C) 2014 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.",
journal = "Advanced Powder Technology",
title = "Effect of processing parameters on structural, morphological and optical Y2O3:Yb3+/Ho3+ powders characteristics",
volume = "25",
number = "5",
pages = "1449-1454",
doi = "10.1016/j.apt.2014.03.015"
}

Mančić, L., Lojpur, V., Marinković, B. A., de Pinho Mauricio, M. H., Dramićanin, M.,& Milošević, O.. (2014). Effect of processing parameters on structural, morphological and optical Y2O3:Yb3+/Ho3+ powders characteristics. in Advanced Powder Technology, 25(5), 1449-1454.
https://doi.org/10.1016/j.apt.2014.03.015

Mančić L, Lojpur V, Marinković BA, de Pinho Mauricio MH, Dramićanin M, Milošević O. Effect of processing parameters on structural, morphological and optical Y2O3:Yb3+/Ho3+ powders characteristics. in Advanced Powder Technology. 2014;25(5):1449-1454.
doi:10.1016/j.apt.2014.03.015 .

Mančić, Lidija, Lojpur, Vesna, Marinković, Bojan A., de Pinho Mauricio, M. H., Dramićanin, Miroslav, Milošević, Olivera, "Effect of processing parameters on structural, morphological and optical Y2O3:Yb3+/Ho3+ powders characteristics" in Advanced Powder Technology, 25, no. 5 (2014):1449-1454,
https://doi.org/10.1016/j.apt.2014.03.015 . .

TY  - CONF
AU  - Dugandžić, Ivan
AU  - Jovanović, Dragana J.
AU  - Mančić, Lidija
AU  - Šaponjić, Zoran
AU  - Nedeljković, Jovan
AU  - Milošević, Olivera
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/819
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7539
AB  - Theoretical and experimental investigation of the particle formation during processing of colloidal nanoparticles in aerosol laminar flow reactor is presented. Simple analytical model taking into consideration all important process parameters, such as physico-chemical properties of the colloidal solution, initial droplet size, residence time and temperature, is developed in order to predict the final particle morphology. The formation of spherical, hierarchically organized, ~450 nm sized TiO2 particles has been followed at 150°C starting from colloidal TiO2 nanoparticle (~4.5 nm) solution as precursor. It has been shown that the final particle morphology is formed in the evaporation/drying stage through the self assembly processes of colloidal nanoparticles collision and aggregation. The dimensionless numbers Re, Nu, Pr and Bi, were used in modeling to briefly describe the transport properties in dispersed system and heat and mass transport phenomena. The predicted particle size and morphology is confirmed by using scanning electron microscopy (SEM/FESEM) and laser diffraction particle size analyzer (LPS). Additionally, closer morphological investigation is performed with transmission electron microscopy (TEM) and nanotomography. Correspondingly, theoretical analysis under this study presents a simple procedure to predict the final morphology and mean particle size during aerosol processing.
PB  - Sevilla : FEMS
C3  - EUROMAT 2013: European Congress and Exhibition on Advanced Materials and Processes, Sevilla 8-13, October, 2013: CD Book of Abstracts
T1  - Theoretical and experimental analysis of droplet-to-particle formation during aerosol processing of colloidal TiO2 nanoparticles
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7539
ER  - 

@conference{
author = "Dugandžić, Ivan and Jovanović, Dragana J. and Mančić, Lidija and Šaponjić, Zoran and Nedeljković, Jovan and Milošević, Olivera",
year = "2013",
abstract = "Theoretical and experimental investigation of the particle formation during processing of colloidal nanoparticles in aerosol laminar flow reactor is presented. Simple analytical model taking into consideration all important process parameters, such as physico-chemical properties of the colloidal solution, initial droplet size, residence time and temperature, is developed in order to predict the final particle morphology. The formation of spherical, hierarchically organized, ~450 nm sized TiO2 particles has been followed at 150°C starting from colloidal TiO2 nanoparticle (~4.5 nm) solution as precursor. It has been shown that the final particle morphology is formed in the evaporation/drying stage through the self assembly processes of colloidal nanoparticles collision and aggregation. The dimensionless numbers Re, Nu, Pr and Bi, were used in modeling to briefly describe the transport properties in dispersed system and heat and mass transport phenomena. The predicted particle size and morphology is confirmed by using scanning electron microscopy (SEM/FESEM) and laser diffraction particle size analyzer (LPS). Additionally, closer morphological investigation is performed with transmission electron microscopy (TEM) and nanotomography. Correspondingly, theoretical analysis under this study presents a simple procedure to predict the final morphology and mean particle size during aerosol processing.",
publisher = "Sevilla : FEMS",
journal = "EUROMAT 2013: European Congress and Exhibition on Advanced Materials and Processes, Sevilla 8-13, October, 2013: CD Book of Abstracts",
title = "Theoretical and experimental analysis of droplet-to-particle formation during aerosol processing of colloidal TiO2 nanoparticles",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7539"
}

Dugandžić, I., Jovanović, D. J., Mančić, L., Šaponjić, Z., Nedeljković, J.,& Milošević, O.. (2013). Theoretical and experimental analysis of droplet-to-particle formation during aerosol processing of colloidal TiO2 nanoparticles. in EUROMAT 2013: European Congress and Exhibition on Advanced Materials and Processes, Sevilla 8-13, October, 2013: CD Book of Abstracts
Sevilla : FEMS..
https://hdl.handle.net/21.15107/rcub_vinar_7539

Dugandžić I, Jovanović DJ, Mančić L, Šaponjić Z, Nedeljković J, Milošević O. Theoretical and experimental analysis of droplet-to-particle formation during aerosol processing of colloidal TiO2 nanoparticles. in EUROMAT 2013: European Congress and Exhibition on Advanced Materials and Processes, Sevilla 8-13, October, 2013: CD Book of Abstracts. 2013;.
https://hdl.handle.net/21.15107/rcub_vinar_7539 .

Dugandžić, Ivan, Jovanović, Dragana J., Mančić, Lidija, Šaponjić, Zoran, Nedeljković, Jovan, Milošević, Olivera, "Theoretical and experimental analysis of droplet-to-particle formation during aerosol processing of colloidal TiO2 nanoparticles" in EUROMAT 2013: European Congress and Exhibition on Advanced Materials and Processes, Sevilla 8-13, October, 2013: CD Book of Abstracts (2013),
https://hdl.handle.net/21.15107/rcub_vinar_7539 .

TY  - CONF
AU  - Dugandžić, Ivan
AU  - Jovanović, Dragana J.
AU  - Mančić, Lidija
AU  - Šaponjić, Zoran
AU  - Nedeljković, Jovan
AU  - Milošević, Olivera
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/820
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7540
AB  - The low-temperature (T=150oC) aerosol route, representing a feasible bottom-up technique for nano materials processing in disperse system, was applied for the synthesis of spherical, non-agglomerated, hierarchically organized titanium dioxide (TiO2) nano-particles. The diverse levels of structural, morphological and functional complexity were explored simply by means of appropriate selection of different colloidal precursor solutions of either nearly spherical nano-particles[1] (a), surface modified nano-particles with dopamine (b) or nano-tubes (c). The detailed structural and morphological investigations were done by X-ray powder diffraction (XRPD), laser particle size (LPS) analysis, scanning and field emission electron microscopy (SEM/FESEM) and transmission electron microscopy (TEM). Spherical, submicronic, soft and grained TiO2 particles with the mean size from ~350 to ~450nm and with clustered inner structure, composed of primary nanocrystals (<10nm), were obtained. The optical properties and surface structure were analyzed by UV-Vis diffusive reflectance (UV-Vis DRS) and Fourier transform infrared (FTIR) spectroscopy. The obtained results offer a general route for the synthesis of self-assemblies with tunable morphology and optical properties. A significant decrease of the effective band gap values (1.7 to 1.9eV) for the processed TiO2 nanoparticles, compared to the band gap of bulk material (3.2eV), was achieved. Such hierarchical nano-structured powders, are expected to have potential application not only in the field of photovoltaic technologies[3] but also in various aspects of photo catalysis.[4]References:[1] Dugandžić I.M., Jovanović D.J., Mančić L.T., Zheng N., Ahrenkiel S.P., Milošević O.B., Šaponjić Z.V. and Nedeljković J.M., 2012 Surface modification of submicronic TiO2 particles prepared by ultrasonic spray pyrolysis for visible light absorption, J. Nanopart. Res., 14 (10) 1157 (DOI10.1007/s11051-012-1157-1)[3] Zhang Q., Myers D., Lan J., Jenekhe S.A. and Cao G., 2012 Applications of light scattering in dyesensitized solar cells, Phys. Chem. Chem. Phys., 14, 14982-14998[4] Liu B., Nakata K., Sakai M., Saito H., Ochiai T., Murakami T., Takagi K. and Fujishima A., 2012 Hierarchical TiO2 spherical nanostructures with tunable pore size, pore volume and specific surface area: facile preparation and high-photocatalytic performance Catal. Sci. Technol., 2, 1933-1939
PB  - Sevilla : FEMS
C3  - EUROMAT 2013: European Congress and Exhibition on Advanced Materials and Processes, Sevilla 8-13, October, 2013: CD Book of Abstracts
T1  - Aerosol processing of hierarchically organized TiO2 based nano-particles
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7540
ER  - 

@conference{
author = "Dugandžić, Ivan and Jovanović, Dragana J. and Mančić, Lidija and Šaponjić, Zoran and Nedeljković, Jovan and Milošević, Olivera",
year = "2013",
abstract = "The low-temperature (T=150oC) aerosol route, representing a feasible bottom-up technique for nano materials processing in disperse system, was applied for the synthesis of spherical, non-agglomerated, hierarchically organized titanium dioxide (TiO2) nano-particles. The diverse levels of structural, morphological and functional complexity were explored simply by means of appropriate selection of different colloidal precursor solutions of either nearly spherical nano-particles[1] (a), surface modified nano-particles with dopamine (b) or nano-tubes (c). The detailed structural and morphological investigations were done by X-ray powder diffraction (XRPD), laser particle size (LPS) analysis, scanning and field emission electron microscopy (SEM/FESEM) and transmission electron microscopy (TEM). Spherical, submicronic, soft and grained TiO2 particles with the mean size from ~350 to ~450nm and with clustered inner structure, composed of primary nanocrystals (<10nm), were obtained. The optical properties and surface structure were analyzed by UV-Vis diffusive reflectance (UV-Vis DRS) and Fourier transform infrared (FTIR) spectroscopy. The obtained results offer a general route for the synthesis of self-assemblies with tunable morphology and optical properties. A significant decrease of the effective band gap values (1.7 to 1.9eV) for the processed TiO2 nanoparticles, compared to the band gap of bulk material (3.2eV), was achieved. Such hierarchical nano-structured powders, are expected to have potential application not only in the field of photovoltaic technologies[3] but also in various aspects of photo catalysis.[4]References:[1] Dugandžić I.M., Jovanović D.J., Mančić L.T., Zheng N., Ahrenkiel S.P., Milošević O.B., Šaponjić Z.V. and Nedeljković J.M., 2012 Surface modification of submicronic TiO2 particles prepared by ultrasonic spray pyrolysis for visible light absorption, J. Nanopart. Res., 14 (10) 1157 (DOI10.1007/s11051-012-1157-1)[3] Zhang Q., Myers D., Lan J., Jenekhe S.A. and Cao G., 2012 Applications of light scattering in dyesensitized solar cells, Phys. Chem. Chem. Phys., 14, 14982-14998[4] Liu B., Nakata K., Sakai M., Saito H., Ochiai T., Murakami T., Takagi K. and Fujishima A., 2012 Hierarchical TiO2 spherical nanostructures with tunable pore size, pore volume and specific surface area: facile preparation and high-photocatalytic performance Catal. Sci. Technol., 2, 1933-1939",
publisher = "Sevilla : FEMS",
journal = "EUROMAT 2013: European Congress and Exhibition on Advanced Materials and Processes, Sevilla 8-13, October, 2013: CD Book of Abstracts",
title = "Aerosol processing of hierarchically organized TiO2 based nano-particles",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7540"
}

Dugandžić, I., Jovanović, D. J., Mančić, L., Šaponjić, Z., Nedeljković, J.,& Milošević, O.. (2013). Aerosol processing of hierarchically organized TiO2 based nano-particles. in EUROMAT 2013: European Congress and Exhibition on Advanced Materials and Processes, Sevilla 8-13, October, 2013: CD Book of Abstracts
Sevilla : FEMS..
https://hdl.handle.net/21.15107/rcub_vinar_7540

Dugandžić I, Jovanović DJ, Mančić L, Šaponjić Z, Nedeljković J, Milošević O. Aerosol processing of hierarchically organized TiO2 based nano-particles. in EUROMAT 2013: European Congress and Exhibition on Advanced Materials and Processes, Sevilla 8-13, October, 2013: CD Book of Abstracts. 2013;.
https://hdl.handle.net/21.15107/rcub_vinar_7540 .

Dugandžić, Ivan, Jovanović, Dragana J., Mančić, Lidija, Šaponjić, Zoran, Nedeljković, Jovan, Milošević, Olivera, "Aerosol processing of hierarchically organized TiO2 based nano-particles" in EUROMAT 2013: European Congress and Exhibition on Advanced Materials and Processes, Sevilla 8-13, October, 2013: CD Book of Abstracts (2013),
https://hdl.handle.net/21.15107/rcub_vinar_7540 .

TY  - CONF
AU  - Dugandžić, Ivan
AU  - Jovanović, Dragana J.
AU  - Mančić, Lidija
AU  - Šaponjić, Zoran
AU  - Nedeljković, Jovan
AU  - Milošević, Olivera
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/150
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7352
AB  - Poster presented at the conference Advanced Ceramics and Application II – Serbian Ceramic Society, Belgrade, September 30 – October 1, 2013
T1  - Aerosol-assisted synthesis of hierarchically organized titania and titanates nanostructures
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7352
ER  - 

@conference{
author = "Dugandžić, Ivan and Jovanović, Dragana J. and Mančić, Lidija and Šaponjić, Zoran and Nedeljković, Jovan and Milošević, Olivera",
year = "2013",
abstract = "Poster presented at the conference Advanced Ceramics and Application II – Serbian Ceramic Society, Belgrade, September 30 – October 1, 2013",
title = "Aerosol-assisted synthesis of hierarchically organized titania and titanates nanostructures",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7352"
}

Dugandžić, I., Jovanović, D. J., Mančić, L., Šaponjić, Z., Nedeljković, J.,& Milošević, O.. (2013). Aerosol-assisted synthesis of hierarchically organized titania and titanates nanostructures. .
https://hdl.handle.net/21.15107/rcub_vinar_7352

Dugandžić I, Jovanović DJ, Mančić L, Šaponjić Z, Nedeljković J, Milošević O. Aerosol-assisted synthesis of hierarchically organized titania and titanates nanostructures. 2013;.
https://hdl.handle.net/21.15107/rcub_vinar_7352 .

Dugandžić, Ivan, Jovanović, Dragana J., Mančić, Lidija, Šaponjić, Zoran, Nedeljković, Jovan, Milošević, Olivera, "Aerosol-assisted synthesis of hierarchically organized titania and titanates nanostructures" (2013),
https://hdl.handle.net/21.15107/rcub_vinar_7352 .

TY  - JOUR
AU  - Dugandžić, Ivan
AU  - Jovanović, Dragana J.
AU  - Mančić, Lidija
AU  - Milošević, Olivera
AU  - Ahrenkiel, Scott Phillip
AU  - Šaponjić, Zoran
AU  - Nedeljković, Jovan
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/344
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7409
AB  - Spherical, submicronic TiO2 powder particles were prepared in the low temperature process of ultrasonic spray pyrolysis (150 °C) by using as a precursor aqueous colloidal solutions consisting of surface modified 45 Å TiO2 nanoparticles with dopamine. Detailed structural and morphological characterization of colored submicronic TiO2 spheres was performed by X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), laser particle size analysis and FTIR techniques. Also, optical characterization of both dopamine-modified TiO2 precursor nanoparticles and submicronic TiO2 powder particles was performed using absorption and diffuse reflectance spectroscopy, respectively. A significant decrease of the effective band gap (1.9 eV) in dopamine-modified TiO2 nanoparticles compared to the band gap of bulk material (3.2 eV) was preserved after formation of submicronic TiO2 powder particles in the process of ultrasonic spray pyrolysis under mild experimental conditions. Due to the nanostructured nature, surface-modified assemblage of TiO2 nanoparticles preserved unique ability to absorb light through charge transfer complex by photoexcitation of the ligand-to-TiO2 band, conventionally associated with extremely small TiO2 nanoparticles (d < 20 nm) whose surface Ti atoms, owing to the large curvature, have penta-coordinate geometry.
T2  - Materials Chemistry and Physics
T1  - Ultrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamine
SP  - 233
EP  - 239
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7409
ER  - 

@article{
author = "Dugandžić, Ivan and Jovanović, Dragana J. and Mančić, Lidija and Milošević, Olivera and Ahrenkiel, Scott Phillip and Šaponjić, Zoran and Nedeljković, Jovan",
year = "2013",
abstract = "Spherical, submicronic TiO2 powder particles were prepared in the low temperature process of ultrasonic spray pyrolysis (150 °C) by using as a precursor aqueous colloidal solutions consisting of surface modified 45 Å TiO2 nanoparticles with dopamine. Detailed structural and morphological characterization of colored submicronic TiO2 spheres was performed by X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), laser particle size analysis and FTIR techniques. Also, optical characterization of both dopamine-modified TiO2 precursor nanoparticles and submicronic TiO2 powder particles was performed using absorption and diffuse reflectance spectroscopy, respectively. A significant decrease of the effective band gap (1.9 eV) in dopamine-modified TiO2 nanoparticles compared to the band gap of bulk material (3.2 eV) was preserved after formation of submicronic TiO2 powder particles in the process of ultrasonic spray pyrolysis under mild experimental conditions. Due to the nanostructured nature, surface-modified assemblage of TiO2 nanoparticles preserved unique ability to absorb light through charge transfer complex by photoexcitation of the ligand-to-TiO2 band, conventionally associated with extremely small TiO2 nanoparticles (d < 20 nm) whose surface Ti atoms, owing to the large curvature, have penta-coordinate geometry.",
journal = "Materials Chemistry and Physics",
title = "Ultrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamine",
pages = "233-239",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7409"
}

Dugandžić, I., Jovanović, D. J., Mančić, L., Milošević, O., Ahrenkiel, S. P., Šaponjić, Z.,& Nedeljković, J.. (2013). Ultrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamine. in Materials Chemistry and Physics, 233-239.
https://hdl.handle.net/21.15107/rcub_vinar_7409

Dugandžić I, Jovanović DJ, Mančić L, Milošević O, Ahrenkiel SP, Šaponjić Z, Nedeljković J. Ultrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamine. in Materials Chemistry and Physics. 2013;:233-239.
https://hdl.handle.net/21.15107/rcub_vinar_7409 .

Dugandžić, Ivan, Jovanović, Dragana J., Mančić, Lidija, Milošević, Olivera, Ahrenkiel, Scott Phillip, Šaponjić, Zoran, Nedeljković, Jovan, "Ultrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamine" in Materials Chemistry and Physics (2013):233-239,
https://hdl.handle.net/21.15107/rcub_vinar_7409 .

TY  - CONF
AU  - Dugandžić, Ivan
AU  - Jovanović, Dragana J.
AU  - Mančić, Lidija
AU  - Šaponjić, Zoran
AU  - Nedeljković, Jovan
AU  - Milošević, Olivera
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/424
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7432
AB  - The aerosol route, representing a feasible bottom-up technique for nanomaterials processing in disperse system, was applied for the low-temperature (T=150 oC) synthesis of spherical, nonagglomerated, hierarchically organized titania and titanates nanostructures. The diverse levels of structural, morphological and functional complexity were explored by using appropriate colloidal precursors comprising either spherical nanoparticles or nanotubes. In both cases, spherical, grained, submicronic sized particles with the average diameter of ~350 nm for titania and ~ 450 nm for titanates were obtained. The detailed structural and morphological investigations were done according to X-ray powder diffraction (XRPD), scanning and field emission electron microscopy (SEM/FESEM), particle size distribution (PSD) and transmission electron microscopy (TEM) results. Results revealed that particles have clustered inner structure and are composed from primary nanounits in form of nanoparticles or nanotubes. Such hierarchically organized particles are expected to have potential application not only in the field of photovoltaics but also in various branches of photocatalysis.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade
T1  - Aerosol-assisted synthesis of hierarchically organized titania and titanates nanostructures
SP  - 46
EP  - 47
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7432
ER  - 

@conference{
author = "Dugandžić, Ivan and Jovanović, Dragana J. and Mančić, Lidija and Šaponjić, Zoran and Nedeljković, Jovan and Milošević, Olivera",
year = "2013",
abstract = "The aerosol route, representing a feasible bottom-up technique for nanomaterials processing in disperse system, was applied for the low-temperature (T=150 oC) synthesis of spherical, nonagglomerated, hierarchically organized titania and titanates nanostructures. The diverse levels of structural, morphological and functional complexity were explored by using appropriate colloidal precursors comprising either spherical nanoparticles or nanotubes. In both cases, spherical, grained, submicronic sized particles with the average diameter of ~350 nm for titania and ~ 450 nm for titanates were obtained. The detailed structural and morphological investigations were done according to X-ray powder diffraction (XRPD), scanning and field emission electron microscopy (SEM/FESEM), particle size distribution (PSD) and transmission electron microscopy (TEM) results. Results revealed that particles have clustered inner structure and are composed from primary nanounits in form of nanoparticles or nanotubes. Such hierarchically organized particles are expected to have potential application not only in the field of photovoltaics but also in various branches of photocatalysis.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade",
title = "Aerosol-assisted synthesis of hierarchically organized titania and titanates nanostructures",
pages = "46-47",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7432"
}

Dugandžić, I., Jovanović, D. J., Mančić, L., Šaponjić, Z., Nedeljković, J.,& Milošević, O.. (2013). Aerosol-assisted synthesis of hierarchically organized titania and titanates nanostructures. in Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade
Belgrade : Serbian Ceramic Society., 46-47.
https://hdl.handle.net/21.15107/rcub_vinar_7432

Dugandžić I, Jovanović DJ, Mančić L, Šaponjić Z, Nedeljković J, Milošević O. Aerosol-assisted synthesis of hierarchically organized titania and titanates nanostructures. in Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade. 2013;:46-47.
https://hdl.handle.net/21.15107/rcub_vinar_7432 .

Dugandžić, Ivan, Jovanović, Dragana J., Mančić, Lidija, Šaponjić, Zoran, Nedeljković, Jovan, Milošević, Olivera, "Aerosol-assisted synthesis of hierarchically organized titania and titanates nanostructures" in Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade (2013):46-47,
https://hdl.handle.net/21.15107/rcub_vinar_7432 .

TY  - CONF
AU  - Lojpur, Vesna
AU  - Mančić, Lidija
AU  - Marinković, Bojan A.
AU  - Dramićanin, Miroslav
AU  - Milošević, Olivera
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/419
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7429
AB  - Up-converting yttrium oxide powders doped with Yb3+ and co-doped with Ho3+ weresynthesized through hydrothermal processing at 200 °C/3 h. Reverse precipitation of the starting nitrates mixture is performed with the help of ammonium hydrogen carbonate (AHC) solution up to pH 7 or pH 9 prior to hydrothermal treatment. Morphological features of the as-prepared (asp)powders and rare earth oxides obtained after powders additional annealing at 1100 oC (3 and 12 h)are discussed based on X-ray powder diffractometry (XRPD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Structural refinement confirmed generation of the cubic bixbyte-structure (S.G. Ia-3) with non-uniform accomodation of dopants at C2 and S6 cationic sites. SEM revealed that the particles have plate-like or rod-like morphology in dependence of hydrothermal processing (pH). Due to the fact that are composed from nanograins (30-100 nm) they demonstrate prominent green luminescence centered at 550 nm after been excited with the infrared laser source (λ=978 nm).
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade
T1  - Effect of processing parameters on structural and morphological Y2O3 :Yb3+/Ho3+ powders characteristics
SP  - 41
EP  - 42
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7429
ER  - 

@conference{
author = "Lojpur, Vesna and Mančić, Lidija and Marinković, Bojan A. and Dramićanin, Miroslav and Milošević, Olivera",
year = "2013",
abstract = "Up-converting yttrium oxide powders doped with Yb3+ and co-doped with Ho3+ weresynthesized through hydrothermal processing at 200 °C/3 h. Reverse precipitation of the starting nitrates mixture is performed with the help of ammonium hydrogen carbonate (AHC) solution up to pH 7 or pH 9 prior to hydrothermal treatment. Morphological features of the as-prepared (asp)powders and rare earth oxides obtained after powders additional annealing at 1100 oC (3 and 12 h)are discussed based on X-ray powder diffractometry (XRPD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Structural refinement confirmed generation of the cubic bixbyte-structure (S.G. Ia-3) with non-uniform accomodation of dopants at C2 and S6 cationic sites. SEM revealed that the particles have plate-like or rod-like morphology in dependence of hydrothermal processing (pH). Due to the fact that are composed from nanograins (30-100 nm) they demonstrate prominent green luminescence centered at 550 nm after been excited with the infrared laser source (λ=978 nm).",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade",
title = "Effect of processing parameters on structural and morphological Y2O3 :Yb3+/Ho3+ powders characteristics",
pages = "41-42",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7429"
}

Lojpur, V., Mančić, L., Marinković, B. A., Dramićanin, M.,& Milošević, O.. (2013). Effect of processing parameters on structural and morphological Y2O3 :Yb3+/Ho3+ powders characteristics. in Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade
Belgrade : Serbian Ceramic Society., 41-42.
https://hdl.handle.net/21.15107/rcub_vinar_7429

Lojpur V, Mančić L, Marinković BA, Dramićanin M, Milošević O. Effect of processing parameters on structural and morphological Y2O3 :Yb3+/Ho3+ powders characteristics. in Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade. 2013;:41-42.
https://hdl.handle.net/21.15107/rcub_vinar_7429 .

Lojpur, Vesna, Mančić, Lidija, Marinković, Bojan A., Dramićanin, Miroslav, Milošević, Olivera, "Effect of processing parameters on structural and morphological Y2O3 :Yb3+/Ho3+ powders characteristics" in Advanced Ceramics and Application : 2nd Serbian Ceramic Society Conference : program and the book of abstracts; September 30 - October 1, 2013; Belgrade (2013):41-42,
https://hdl.handle.net/21.15107/rcub_vinar_7429 .

TY  - CONF
AU  - Medić, Mina M.
AU  - Nikolić, Marko G.
AU  - Lojpur, Vesna
AU  - Mančić, Lidija
AU  - Milošević, Olivera
AU  - Dramićanin, Miroslav
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/812
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7538
AB  - Thermographic phosphors are oxides doped With rare-earth or transition metal ions that will emit visible, Infrared, or UV light upon excitation from an external energy source This materials have received significant attention due to the potential application as optical temperature sensor In this report, we have investigated yttrium oxide co-doped with changeable ytterbium to erbium ratio (Y1.94YbO.05Er001 and Y1 97YbO 02ErO 01) fabricated through hydrothermal synthesis Process conditions (2h, 200 'C) and additional thermal treatment (3h, 1100 'C) allows obtaining nanoparticles of appropriate composition and morphology which further affect on improved photoluminescent characteristics. The fluorescence Intensity ratio (FIR) technique is used to examine potential usage of samples as low temperature sensors. This optical method is based on ratio between two emission lines or areas In photoluminescence spectrum which show temperature dependence. Photoluminescent measurements (PL) are recorded In the temperature range from 10K to 300 K under 978 nm excitingwavelength Observing changes In following transitions blue 2H912~4115/2, green (2H1112, 4S3/2) ~ 411512 and red 4F912~4115/2 Obtained experimental results imply that the fluorescent intensity ratio of the blue, green and red linesand areas show significant temperature sensitivity and can be used as low temperature sensor.
PB  - San Francisco : Materials Research Society
C3  - 2013 MRS Spring Meeting and Exhibit, April 1-5, 2013, San Francisco. California: Program and exhibit guide
T1  - Thermographic Properties of Up-conversion Emission of Y2O3:Yb, Er Nanophosphors Obtained through Hydrothermal Synthesis
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7538
ER  - 

@conference{
author = "Medić, Mina M. and Nikolić, Marko G. and Lojpur, Vesna and Mančić, Lidija and Milošević, Olivera and Dramićanin, Miroslav",
year = "2013",
abstract = "Thermographic phosphors are oxides doped With rare-earth or transition metal ions that will emit visible, Infrared, or UV light upon excitation from an external energy source This materials have received significant attention due to the potential application as optical temperature sensor In this report, we have investigated yttrium oxide co-doped with changeable ytterbium to erbium ratio (Y1.94YbO.05Er001 and Y1 97YbO 02ErO 01) fabricated through hydrothermal synthesis Process conditions (2h, 200 'C) and additional thermal treatment (3h, 1100 'C) allows obtaining nanoparticles of appropriate composition and morphology which further affect on improved photoluminescent characteristics. The fluorescence Intensity ratio (FIR) technique is used to examine potential usage of samples as low temperature sensors. This optical method is based on ratio between two emission lines or areas In photoluminescence spectrum which show temperature dependence. Photoluminescent measurements (PL) are recorded In the temperature range from 10K to 300 K under 978 nm excitingwavelength Observing changes In following transitions blue 2H912~4115/2, green (2H1112, 4S3/2) ~ 411512 and red 4F912~4115/2 Obtained experimental results imply that the fluorescent intensity ratio of the blue, green and red linesand areas show significant temperature sensitivity and can be used as low temperature sensor.",
publisher = "San Francisco : Materials Research Society",
journal = "2013 MRS Spring Meeting and Exhibit, April 1-5, 2013, San Francisco. California: Program and exhibit guide",
title = "Thermographic Properties of Up-conversion Emission of Y2O3:Yb, Er Nanophosphors Obtained through Hydrothermal Synthesis",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7538"
}

Medić, M. M., Nikolić, M. G., Lojpur, V., Mančić, L., Milošević, O.,& Dramićanin, M.. (2013). Thermographic Properties of Up-conversion Emission of Y2O3:Yb, Er Nanophosphors Obtained through Hydrothermal Synthesis. in 2013 MRS Spring Meeting and Exhibit, April 1-5, 2013, San Francisco. California: Program and exhibit guide
San Francisco : Materials Research Society..
https://hdl.handle.net/21.15107/rcub_vinar_7538

Medić MM, Nikolić MG, Lojpur V, Mančić L, Milošević O, Dramićanin M. Thermographic Properties of Up-conversion Emission of Y2O3:Yb, Er Nanophosphors Obtained through Hydrothermal Synthesis. in 2013 MRS Spring Meeting and Exhibit, April 1-5, 2013, San Francisco. California: Program and exhibit guide. 2013;.
https://hdl.handle.net/21.15107/rcub_vinar_7538 .

Medić, Mina M., Nikolić, Marko G., Lojpur, Vesna, Mančić, Lidija, Milošević, Olivera, Dramićanin, Miroslav, "Thermographic Properties of Up-conversion Emission of Y2O3:Yb, Er Nanophosphors Obtained through Hydrothermal Synthesis" in 2013 MRS Spring Meeting and Exhibit, April 1-5, 2013, San Francisco. California: Program and exhibit guide (2013),
https://hdl.handle.net/21.15107/rcub_vinar_7538 .

TY  - JOUR
AU  - Lojpur, Vesna
AU  - Rabanal Jiménez, Maria Eugenia
AU  - Dramićanin, Miroslav
AU  - Tan, Z.
AU  - Hashishin, Takeshi
AU  - Ohara, Satoshi
AU  - Milošević, Olivera
AU  - Mančić, Lidija
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7992
AB  - Nanocrystalline up-converting Y₂ O₃Yb³⁺ Er³⁺ phosphor particles were processed in a dispersed system-aerosol, generated ultrasonically at 1.3 MHz from common nitrate precursor solution having fixed ytterbium-to-erbium concentration ratio. The appropriate process parameters: residence time 21 s, carrier gas (air) flow rate 1.6 dm3/min, synthesis temperature 900 °C, led to the formation of un-agglomerated spherical nanostructured secondary particles, having mean particle size of approx 450 nm, composed of primary nanoscaled (20 nm) subunits. In order to reach targeting phase crystallinity, the as-prepared particles were additionally annealed at 1100 °C in air for 12, 24 and 48 h, respectively. Particle structure, morphology and purity were analyzed by X-ray powder diffraction (XRPD), scanning electron microscopy (FESEM/SEM), analytical and high resolution transmission electron microscopy (TEM/HRTEM) in combination with energy dispersive X-ray analysis and Fourier Transform Infrared Spectroscopy (FTIR). All samples crystallized in a cubic bixbyte-structure, space group Ia-3. The crystallite size changed with annealing time from 30 nm in as-prepared sample to 135 nm in sample annealed for 48 h, respectively. Emission spectra were assigned to the following trivalent erbium f–f electronic transitions: ²H₉/₂ → ⁴I₁₅/₂ (blue: 407–420 nm), (²H₁₁/₂̦ ⁴S₃/₂) → ⁴I₁₅/₂ (green: 510–590 nm), and ⁴F₉/₂ → ⁴I₁₅/₂ (red: 640–720 nm). The significant improvement of the emission decay times were observed after thermal treatment and this effect is correlated further with the structural and morphological particles characteristics. For the anneal-ing time of 12 h a quite high emission decay times were achieved (blue: 0.14 ms, green: 0.32 ms and red: 0.39 ms).
T2  - Journal of Alloys and Compounds
T1  - Structural, morphological and luminescence properties of nanocrystalline up-converting Y1.89Yb0.1Er0.01O3 phosphor particles synthesized through aerosol route
VL  - 580
SP  - 584
EP  - 591
DO  - 10.1016/j.jallcom.2013.07.125
ER  - 

@article{
author = "Lojpur, Vesna and Rabanal Jiménez, Maria Eugenia and Dramićanin, Miroslav and Tan, Z. and Hashishin, Takeshi and Ohara, Satoshi and Milošević, Olivera and Mančić, Lidija",
year = "2013",
abstract = "Nanocrystalline up-converting Y₂ O₃Yb³⁺ Er³⁺ phosphor particles were processed in a dispersed system-aerosol, generated ultrasonically at 1.3 MHz from common nitrate precursor solution having fixed ytterbium-to-erbium concentration ratio. The appropriate process parameters: residence time 21 s, carrier gas (air) flow rate 1.6 dm3/min, synthesis temperature 900 °C, led to the formation of un-agglomerated spherical nanostructured secondary particles, having mean particle size of approx 450 nm, composed of primary nanoscaled (20 nm) subunits. In order to reach targeting phase crystallinity, the as-prepared particles were additionally annealed at 1100 °C in air for 12, 24 and 48 h, respectively. Particle structure, morphology and purity were analyzed by X-ray powder diffraction (XRPD), scanning electron microscopy (FESEM/SEM), analytical and high resolution transmission electron microscopy (TEM/HRTEM) in combination with energy dispersive X-ray analysis and Fourier Transform Infrared Spectroscopy (FTIR). All samples crystallized in a cubic bixbyte-structure, space group Ia-3. The crystallite size changed with annealing time from 30 nm in as-prepared sample to 135 nm in sample annealed for 48 h, respectively. Emission spectra were assigned to the following trivalent erbium f–f electronic transitions: ²H₉/₂ → ⁴I₁₅/₂ (blue: 407–420 nm), (²H₁₁/₂̦ ⁴S₃/₂) → ⁴I₁₅/₂ (green: 510–590 nm), and ⁴F₉/₂ → ⁴I₁₅/₂ (red: 640–720 nm). The significant improvement of the emission decay times were observed after thermal treatment and this effect is correlated further with the structural and morphological particles characteristics. For the anneal-ing time of 12 h a quite high emission decay times were achieved (blue: 0.14 ms, green: 0.32 ms and red: 0.39 ms).",
journal = "Journal of Alloys and Compounds",
title = "Structural, morphological and luminescence properties of nanocrystalline up-converting Y1.89Yb0.1Er0.01O3 phosphor particles synthesized through aerosol route",
volume = "580",
pages = "584-591",
doi = "10.1016/j.jallcom.2013.07.125"
}

Lojpur, V., Rabanal Jiménez, M. E., Dramićanin, M., Tan, Z., Hashishin, T., Ohara, S., Milošević, O.,& Mančić, L.. (2013). Structural, morphological and luminescence properties of nanocrystalline up-converting Y1.89Yb0.1Er0.01O3 phosphor particles synthesized through aerosol route. in Journal of Alloys and Compounds, 580, 584-591.
https://doi.org/10.1016/j.jallcom.2013.07.125

Lojpur V, Rabanal Jiménez ME, Dramićanin M, Tan Z, Hashishin T, Ohara S, Milošević O, Mančić L. Structural, morphological and luminescence properties of nanocrystalline up-converting Y1.89Yb0.1Er0.01O3 phosphor particles synthesized through aerosol route. in Journal of Alloys and Compounds. 2013;580:584-591.
doi:10.1016/j.jallcom.2013.07.125 .

Lojpur, Vesna, Rabanal Jiménez, Maria Eugenia, Dramićanin, Miroslav, Tan, Z., Hashishin, Takeshi, Ohara, Satoshi, Milošević, Olivera, Mančić, Lidija, "Structural, morphological and luminescence properties of nanocrystalline up-converting Y1.89Yb0.1Er0.01O3 phosphor particles synthesized through aerosol route" in Journal of Alloys and Compounds, 580 (2013):584-591,
https://doi.org/10.1016/j.jallcom.2013.07.125 . .

TY  - JOUR
AU  - Lojpur, Vesna
AU  - Nikolić, M.
AU  - Mančić, Lidija
AU  - Milošević, Olivera
AU  - Dramićanin, Miroslav
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5257
AB  - Recently, trivalent rare earth doped materials have received significant attention due to the strong temperature dependence of the fluorescence emission of these materials, which can be useful in temperature sensing. Here, we investigated Y2O3 ceramic powders doped with Yb3+ and co-doped with either Tm3+ or Ho3+. The powders were obtained via spray pyrolysis at 900 degrees C and additionally thermally treated at 1100 degrees C for 24 h. Structural characterization using X-ray powder diffraction confirmed the cubic bixbyte structure. Scanning electron microscopy (SEM) revealed that the particles exhibit a uniform spherical morphology. The up-conversion emissions were measured using laser excitation at 978 nm, resulting in the following transitions: blue emission in the range of 450-500 nm, weak red emission in the range of 650-680 nm and near infrared emission in the range of 765-840 nm for Tm3+, as well as green emission centered at 550 nm and weak near infrared emission at 755 nm for the Ho3+ ions. In addition, the temperature dependence of the fluorescence intensity ratios of different Stark components was analyzed in the range of 10-300 K. Significant temperature sensitivity was detected for several components, with the largest value of 0.097 K-1 related to the intensity ratio of I-536 and I-772 emissions observed for the Y2O3:Yb,Ho powder. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Y2O3:Yb,Tm and Y2O3:Yb,Ho powders for low-temperature thermometry based on up-conversion fluorescence
VL  - 39
IS  - 2
SP  - 1129
EP  - 1134
DO  - 10.1016/j.ceramint.2012.07.036
ER  - 

@article{
author = "Lojpur, Vesna and Nikolić, M. and Mančić, Lidija and Milošević, Olivera and Dramićanin, Miroslav",
year = "2013",
abstract = "Recently, trivalent rare earth doped materials have received significant attention due to the strong temperature dependence of the fluorescence emission of these materials, which can be useful in temperature sensing. Here, we investigated Y2O3 ceramic powders doped with Yb3+ and co-doped with either Tm3+ or Ho3+. The powders were obtained via spray pyrolysis at 900 degrees C and additionally thermally treated at 1100 degrees C for 24 h. Structural characterization using X-ray powder diffraction confirmed the cubic bixbyte structure. Scanning electron microscopy (SEM) revealed that the particles exhibit a uniform spherical morphology. The up-conversion emissions were measured using laser excitation at 978 nm, resulting in the following transitions: blue emission in the range of 450-500 nm, weak red emission in the range of 650-680 nm and near infrared emission in the range of 765-840 nm for Tm3+, as well as green emission centered at 550 nm and weak near infrared emission at 755 nm for the Ho3+ ions. In addition, the temperature dependence of the fluorescence intensity ratios of different Stark components was analyzed in the range of 10-300 K. Significant temperature sensitivity was detected for several components, with the largest value of 0.097 K-1 related to the intensity ratio of I-536 and I-772 emissions observed for the Y2O3:Yb,Ho powder. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Y2O3:Yb,Tm and Y2O3:Yb,Ho powders for low-temperature thermometry based on up-conversion fluorescence",
volume = "39",
number = "2",
pages = "1129-1134",
doi = "10.1016/j.ceramint.2012.07.036"
}

Lojpur, V., Nikolić, M., Mančić, L., Milošević, O.,& Dramićanin, M.. (2013). Y2O3:Yb,Tm and Y2O3:Yb,Ho powders for low-temperature thermometry based on up-conversion fluorescence. in Ceramics International, 39(2), 1129-1134.
https://doi.org/10.1016/j.ceramint.2012.07.036

Lojpur V, Nikolić M, Mančić L, Milošević O, Dramićanin M. Y2O3:Yb,Tm and Y2O3:Yb,Ho powders for low-temperature thermometry based on up-conversion fluorescence. in Ceramics International. 2013;39(2):1129-1134.
doi:10.1016/j.ceramint.2012.07.036 .

Lojpur, Vesna, Nikolić, M., Mančić, Lidija, Milošević, Olivera, Dramićanin, Miroslav, "Y2O3:Yb,Tm and Y2O3:Yb,Ho powders for low-temperature thermometry based on up-conversion fluorescence" in Ceramics International, 39, no. 2 (2013):1129-1134,
https://doi.org/10.1016/j.ceramint.2012.07.036 . .

TY  - JOUR
AU  - Lojpur, Vesna
AU  - Nikolić, Marko G.
AU  - Dramićanin, Miroslav
AU  - Mančić, Lidija
AU  - Milošević, Olivera
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7023
AB  - Over the past few years, rare-earth-ion-doped materials have attracted a great deal of interest due to their potential application as optical temperature sensors. The luminescence properties of these materials are sensitive and change with temperature. Here, we have investigated the properties of yttrium oxide powder co-doped with Yb3+ and Er3+, synthesized through the spray pyrolysis method at 900 degrees C and additionally thermally treated at 1100 degrees C for 24 h. The structural and morphological characterizations are carried out through x-ray powder diffraction (XRPD) and scanning electron microscopy (SEM). The obtained particles are spherical in shape and have cubic bixbyite structure with the space group Ia-3. Photoluminescent measurements (PL) are recorded in the temperature range from 10 to 300 K using 978 nm radiation. Emission spectra are assigned to the following trivalent erbium f-f electronic transitions: H-2(9/2) - GT I-4(15/2) (blue: 407-420 nm), (H-2(11/2), S-4(3/2)) - GT I-4(15/2) (green: 510-590 nm) and F-4(9/2) - GT I-4(15/2) (red: 640-720 nm). The fluorescent intensity ratios of the blue, green and red areas under emission bands show significant temperature sensitivity, with the largest value of 2.3 K-1.
T2  - Physica Scripta
T1  - Low-temperature effects on up-conversion emission of Er3+/Yb3+-co-doped Y2O3
VL  - T157
DO  - 10.1088/0031-8949/2013/T157/014054
ER  - 

@article{
author = "Lojpur, Vesna and Nikolić, Marko G. and Dramićanin, Miroslav and Mančić, Lidija and Milošević, Olivera",
year = "2013",
abstract = "Over the past few years, rare-earth-ion-doped materials have attracted a great deal of interest due to their potential application as optical temperature sensors. The luminescence properties of these materials are sensitive and change with temperature. Here, we have investigated the properties of yttrium oxide powder co-doped with Yb3+ and Er3+, synthesized through the spray pyrolysis method at 900 degrees C and additionally thermally treated at 1100 degrees C for 24 h. The structural and morphological characterizations are carried out through x-ray powder diffraction (XRPD) and scanning electron microscopy (SEM). The obtained particles are spherical in shape and have cubic bixbyite structure with the space group Ia-3. Photoluminescent measurements (PL) are recorded in the temperature range from 10 to 300 K using 978 nm radiation. Emission spectra are assigned to the following trivalent erbium f-f electronic transitions: H-2(9/2) - GT I-4(15/2) (blue: 407-420 nm), (H-2(11/2), S-4(3/2)) - GT I-4(15/2) (green: 510-590 nm) and F-4(9/2) - GT I-4(15/2) (red: 640-720 nm). The fluorescent intensity ratios of the blue, green and red areas under emission bands show significant temperature sensitivity, with the largest value of 2.3 K-1.",
journal = "Physica Scripta",
title = "Low-temperature effects on up-conversion emission of Er3+/Yb3+-co-doped Y2O3",
volume = "T157",
doi = "10.1088/0031-8949/2013/T157/014054"
}

Lojpur, V., Nikolić, M. G., Dramićanin, M., Mančić, L.,& Milošević, O.. (2013). Low-temperature effects on up-conversion emission of Er3+/Yb3+-co-doped Y2O3. in Physica Scripta, T157.
https://doi.org/10.1088/0031-8949/2013/T157/014054

Lojpur V, Nikolić MG, Dramićanin M, Mančić L, Milošević O. Low-temperature effects on up-conversion emission of Er3+/Yb3+-co-doped Y2O3. in Physica Scripta. 2013;T157.
doi:10.1088/0031-8949/2013/T157/014054 .

Lojpur, Vesna, Nikolić, Marko G., Dramićanin, Miroslav, Mančić, Lidija, Milošević, Olivera, "Low-temperature effects on up-conversion emission of Er3+/Yb3+-co-doped Y2O3" in Physica Scripta, T157 (2013),
https://doi.org/10.1088/0031-8949/2013/T157/014054 . .

TY  - JOUR
AU  - Dugandžić, Ivan
AU  - Jovanović, Dragana J.
AU  - Mančić, Lidija
AU  - Milošević, Olivera
AU  - Ahrenkiel, Scott Phillip
AU  - Šaponjić, Zoran
AU  - Nedeljković, Jovan
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5772
AB  - Spherical, submicronic TiO2 powder particles were prepared in the low temperature process of ultrasonic spray pyrolysis (150 degrees C) by using as a precursor aqueous colloidal solutions consisting of surface modified 45 angstrom TiO2 nanoparticles with dopamine. Detailed structural and morphological characterization of colored submicronic TiO2 spheres was performed by X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), laser particle size analysis and FTIR techniques. Also, optical characterization of both dopamine-modified TiO2 precursor nanoparticles and submicronic TiO2 powder particles was performed using absorption and diffuse reflectance spectroscopy, respectively. A significant decrease of the effective band gap (1.9 eV) in dopamine-modified TiO2 nanoparticles compared to the band gap of bulk material (3.2 eV) was preserved after formation of submicronic TiO2 powder particles in the process of ultrasonic spray pyrolysis under mild experimental conditions. Due to the nanostructured nature, surface-modified assemblage of TiO2 nanoparticles preserved unique ability to absorb light through charge transfer complex by photoexcitation of the ligand-to-TiO2 band, conventionally associated with extremely small TiO2 nanoparticles (d LT 20 nm) whose surface Ti atoms, owing to the large curvature, have penta-coordinate geometry. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Materials Chemistry and Physics
T1  - Ultrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamine
VL  - 143
IS  - 1
SP  - 233
EP  - 239
DO  - 10.1016/j.matchemphys.2013.08.058
ER  - 

@article{
author = "Dugandžić, Ivan and Jovanović, Dragana J. and Mančić, Lidija and Milošević, Olivera and Ahrenkiel, Scott Phillip and Šaponjić, Zoran and Nedeljković, Jovan",
year = "2013",
abstract = "Spherical, submicronic TiO2 powder particles were prepared in the low temperature process of ultrasonic spray pyrolysis (150 degrees C) by using as a precursor aqueous colloidal solutions consisting of surface modified 45 angstrom TiO2 nanoparticles with dopamine. Detailed structural and morphological characterization of colored submicronic TiO2 spheres was performed by X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), laser particle size analysis and FTIR techniques. Also, optical characterization of both dopamine-modified TiO2 precursor nanoparticles and submicronic TiO2 powder particles was performed using absorption and diffuse reflectance spectroscopy, respectively. A significant decrease of the effective band gap (1.9 eV) in dopamine-modified TiO2 nanoparticles compared to the band gap of bulk material (3.2 eV) was preserved after formation of submicronic TiO2 powder particles in the process of ultrasonic spray pyrolysis under mild experimental conditions. Due to the nanostructured nature, surface-modified assemblage of TiO2 nanoparticles preserved unique ability to absorb light through charge transfer complex by photoexcitation of the ligand-to-TiO2 band, conventionally associated with extremely small TiO2 nanoparticles (d LT 20 nm) whose surface Ti atoms, owing to the large curvature, have penta-coordinate geometry. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Materials Chemistry and Physics",
title = "Ultrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamine",
volume = "143",
number = "1",
pages = "233-239",
doi = "10.1016/j.matchemphys.2013.08.058"
}

Dugandžić, I., Jovanović, D. J., Mančić, L., Milošević, O., Ahrenkiel, S. P., Šaponjić, Z.,& Nedeljković, J.. (2013). Ultrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamine. in Materials Chemistry and Physics, 143(1), 233-239.
https://doi.org/10.1016/j.matchemphys.2013.08.058

Dugandžić I, Jovanović DJ, Mančić L, Milošević O, Ahrenkiel SP, Šaponjić Z, Nedeljković J. Ultrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamine. in Materials Chemistry and Physics. 2013;143(1):233-239.
doi:10.1016/j.matchemphys.2013.08.058 .

Dugandžić, Ivan, Jovanović, Dragana J., Mančić, Lidija, Milošević, Olivera, Ahrenkiel, Scott Phillip, Šaponjić, Zoran, Nedeljković, Jovan, "Ultrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamine" in Materials Chemistry and Physics, 143, no. 1 (2013):233-239,
https://doi.org/10.1016/j.matchemphys.2013.08.058 . .

TY  - JOUR
AU  - Dugandžić, Ivan
AU  - Lojpur, Vesna
AU  - Mančić, Lidija
AU  - Dramićanin, Miroslav
AU  - Rabanal, Maria Eugenia
AU  - Hashishin, T.
AU  - Tan, Z.
AU  - Ohara, S.
AU  - Milošević, Olivera
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5679
AB  - The opportunities of the hot wall aerosol synthesis, i.e. conventional spray pyrolysis (CSP) method are demonstrated for the generation of highly spherical three-dimensional (3D) nanostructured phosphor particles with uniformly distributed components, phases and nano-clustered inner structure. With the presumption that certain particle morphology is formed during the evaporation/drying stage, the aerosol transport properties and powder generation are correlated with the particles structural and morphological features. With the help of various analyzing techniques like Field Emission Scanning Electron Microscopy (FE-SEM), Transmission Electron Microscopy (TEM) coupled with energy dispersive X-ray Analysis and STEM mode (TEM/EDS), X-ray Powder Diffraction (XRPD) and fluorescence measurements the feasible processing of up-conversion rare-earth Y2O3:Er, Yb phosphors powders are discussed. (C) 2013 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
T2  - Advanced Powder Technology
T1  - Aerosol route as a feasible bottom-up chemical approach for up-converting phosphor particles processing
VL  - 24
IS  - 5
SP  - 852
EP  - 857
DO  - 10.1016/j.apt.2013.02.011
ER  - 

@article{
author = "Dugandžić, Ivan and Lojpur, Vesna and Mančić, Lidija and Dramićanin, Miroslav and Rabanal, Maria Eugenia and Hashishin, T. and Tan, Z. and Ohara, S. and Milošević, Olivera",
year = "2013",
abstract = "The opportunities of the hot wall aerosol synthesis, i.e. conventional spray pyrolysis (CSP) method are demonstrated for the generation of highly spherical three-dimensional (3D) nanostructured phosphor particles with uniformly distributed components, phases and nano-clustered inner structure. With the presumption that certain particle morphology is formed during the evaporation/drying stage, the aerosol transport properties and powder generation are correlated with the particles structural and morphological features. With the help of various analyzing techniques like Field Emission Scanning Electron Microscopy (FE-SEM), Transmission Electron Microscopy (TEM) coupled with energy dispersive X-ray Analysis and STEM mode (TEM/EDS), X-ray Powder Diffraction (XRPD) and fluorescence measurements the feasible processing of up-conversion rare-earth Y2O3:Er, Yb phosphors powders are discussed. (C) 2013 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.",
journal = "Advanced Powder Technology",
title = "Aerosol route as a feasible bottom-up chemical approach for up-converting phosphor particles processing",
volume = "24",
number = "5",
pages = "852-857",
doi = "10.1016/j.apt.2013.02.011"
}

Dugandžić, I., Lojpur, V., Mančić, L., Dramićanin, M., Rabanal, M. E., Hashishin, T., Tan, Z., Ohara, S.,& Milošević, O.. (2013). Aerosol route as a feasible bottom-up chemical approach for up-converting phosphor particles processing. in Advanced Powder Technology, 24(5), 852-857.
https://doi.org/10.1016/j.apt.2013.02.011

Dugandžić I, Lojpur V, Mančić L, Dramićanin M, Rabanal ME, Hashishin T, Tan Z, Ohara S, Milošević O. Aerosol route as a feasible bottom-up chemical approach for up-converting phosphor particles processing. in Advanced Powder Technology. 2013;24(5):852-857.
doi:10.1016/j.apt.2013.02.011 .

Dugandžić, Ivan, Lojpur, Vesna, Mančić, Lidija, Dramićanin, Miroslav, Rabanal, Maria Eugenia, Hashishin, T., Tan, Z., Ohara, S., Milošević, Olivera, "Aerosol route as a feasible bottom-up chemical approach for up-converting phosphor particles processing" in Advanced Powder Technology, 24, no. 5 (2013):852-857,
https://doi.org/10.1016/j.apt.2013.02.011 . .

TY  - JOUR
AU  - Lojpur, Vesna
AU  - Mančić, Lidija
AU  - Rabanal, Maria Eugenia
AU  - Dramićanin, Miroslav
AU  - Tan, Z.
AU  - Hashishin, T.
AU  - Ohara, S.
AU  - Milošević, Olivera
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5685
AB  - Nanocrystalline up-converting Y2O3:Yb3+, Er3+ phosphor particles were processed in a dispersed system-aerosol, generated ultrasonically at 1.3 MHz from common nitrate precursor solution having fixed ytterbium-to-erbium concentration ratio. The appropriate process parameters: residence time 21 s, carrier gas (air) flow rate 1.6 dm(3)/min, synthesis temperature 900 degrees C, led to the formation of un-agglomerated spherical nanostructured secondary particles, having mean particle size of approx 450 nm, composed of primary nanoscaled (20 nm) subunits. In order to reach targeting phase crystallinity, the as-prepared particles were additionally annealed at 1100 degrees C in air for 12, 24 and 48 h, respectively. Particle structure, morphology and purity were analyzed by X-ray powder diffraction (XRPD), scanning electron microscopy (FESEM/SEM), analytical and high resolution transmission electron microscopy (TEM/HRTEM) in combination with energy dispersive X-ray analysis and Fourier Transform Infrared Spectroscopy (FTIR). All samples crystallized in a cubic bixbyte-structure, space group Ia-3. The crystallite size changed with annealing time from 30 nm in as-prepared sample to 135 nm in sample annealed for 48 h, respectively. Emission spectra were assigned to the following trivalent erbium f-f electronic transitions: H-2(9/2) - GT I-4(15/2) (blue: 407-420 nm), (H-2(11/2), S-4(3/2)) - GT I-4(15/2) (green: 510-590 nm), and F-4(9/2) - GT I-4(15/2) (red: 640-720 nm). The significant improvement of the emission decay times were observed after thermal treatment and this effect is correlated further with the structural and morphological particles characteristics. For the annealing time of 12 h a quite high emission decay times were achieved (blue: 0.14 ms, green: 0.32 ms and red: 0.39 ms).
T2  - Journal of Alloys and Compounds
T1  - Structural, morphological and luminescence properties of nanocrystalline up-converting Y1.89Yb0.1Er0.01O3 phosphor particles synthesized through aerosol route
VL  - 580
SP  - 584
EP  - 591
DO  - 10.1016/j.jallcom.2013.07.125
ER  - 

@article{
author = "Lojpur, Vesna and Mančić, Lidija and Rabanal, Maria Eugenia and Dramićanin, Miroslav and Tan, Z. and Hashishin, T. and Ohara, S. and Milošević, Olivera",
year = "2013",
abstract = "Nanocrystalline up-converting Y2O3:Yb3+, Er3+ phosphor particles were processed in a dispersed system-aerosol, generated ultrasonically at 1.3 MHz from common nitrate precursor solution having fixed ytterbium-to-erbium concentration ratio. The appropriate process parameters: residence time 21 s, carrier gas (air) flow rate 1.6 dm(3)/min, synthesis temperature 900 degrees C, led to the formation of un-agglomerated spherical nanostructured secondary particles, having mean particle size of approx 450 nm, composed of primary nanoscaled (20 nm) subunits. In order to reach targeting phase crystallinity, the as-prepared particles were additionally annealed at 1100 degrees C in air for 12, 24 and 48 h, respectively. Particle structure, morphology and purity were analyzed by X-ray powder diffraction (XRPD), scanning electron microscopy (FESEM/SEM), analytical and high resolution transmission electron microscopy (TEM/HRTEM) in combination with energy dispersive X-ray analysis and Fourier Transform Infrared Spectroscopy (FTIR). All samples crystallized in a cubic bixbyte-structure, space group Ia-3. The crystallite size changed with annealing time from 30 nm in as-prepared sample to 135 nm in sample annealed for 48 h, respectively. Emission spectra were assigned to the following trivalent erbium f-f electronic transitions: H-2(9/2) - GT I-4(15/2) (blue: 407-420 nm), (H-2(11/2), S-4(3/2)) - GT I-4(15/2) (green: 510-590 nm), and F-4(9/2) - GT I-4(15/2) (red: 640-720 nm). The significant improvement of the emission decay times were observed after thermal treatment and this effect is correlated further with the structural and morphological particles characteristics. For the annealing time of 12 h a quite high emission decay times were achieved (blue: 0.14 ms, green: 0.32 ms and red: 0.39 ms).",
journal = "Journal of Alloys and Compounds",
title = "Structural, morphological and luminescence properties of nanocrystalline up-converting Y1.89Yb0.1Er0.01O3 phosphor particles synthesized through aerosol route",
volume = "580",
pages = "584-591",
doi = "10.1016/j.jallcom.2013.07.125"
}

Lojpur, V., Mančić, L., Rabanal, M. E., Dramićanin, M., Tan, Z., Hashishin, T., Ohara, S.,& Milošević, O.. (2013). Structural, morphological and luminescence properties of nanocrystalline up-converting Y1.89Yb0.1Er0.01O3 phosphor particles synthesized through aerosol route. in Journal of Alloys and Compounds, 580, 584-591.
https://doi.org/10.1016/j.jallcom.2013.07.125

Lojpur V, Mančić L, Rabanal ME, Dramićanin M, Tan Z, Hashishin T, Ohara S, Milošević O. Structural, morphological and luminescence properties of nanocrystalline up-converting Y1.89Yb0.1Er0.01O3 phosphor particles synthesized through aerosol route. in Journal of Alloys and Compounds. 2013;580:584-591.
doi:10.1016/j.jallcom.2013.07.125 .

Lojpur, Vesna, Mančić, Lidija, Rabanal, Maria Eugenia, Dramićanin, Miroslav, Tan, Z., Hashishin, T., Ohara, S., Milošević, Olivera, "Structural, morphological and luminescence properties of nanocrystalline up-converting Y1.89Yb0.1Er0.01O3 phosphor particles synthesized through aerosol route" in Journal of Alloys and Compounds, 580 (2013):584-591,
https://doi.org/10.1016/j.jallcom.2013.07.125 . .

TY  - JOUR
AU  - Mančić, Lidija
AU  - Lojpur, Vesna
AU  - Marinković, Bojan A.
AU  - Dramićanin, Miroslav
AU  - Milošević, Olivera
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5640
AB  - Examples of (Y2O3-Gd2O3):Eu3+ and Y2O3:(Yb3+/Er3+) rare earth oxide-based phosphors are presented to highlight the controlled synthesis of 1D and 2D nanostructures through simple hydrothermal method. Conversion of the starting nitrates mixture into carbonate hydrate phase is performed with the help of ammonium hydrogen carbonate solution during hydrothermal treatment at 200 degrees C/3 h. Morphological architectures of rare earth oxides obtained after subsequent powders thermal treatment at 600 and 1100 degrees C for 3 and 12 h and their correlation with the optical characteristics are discussed based on X-ray powder diffractometry, field emission scanning electron microscopy, infrared spectroscopy and photoluminescence measurements. Strong red and green emission followed by the superior decay times are attributed to the high powders purity and homogeneous dopants distribution over the host lattice matrix. (c) 2013 Elsevier B.V. All rights reserved.
T2  - Optical Materials
T1  - Hydrothermal synthesis of nanostructured Y2O3 and (Y0.75Gd0.25)(2)O-3 based phosphors
VL  - 35
IS  - 10
SP  - 1817
EP  - 1823
DO  - 10.1016/j.optmat.2013.03.006
ER  - 

@article{
author = "Mančić, Lidija and Lojpur, Vesna and Marinković, Bojan A. and Dramićanin, Miroslav and Milošević, Olivera",
year = "2013",
abstract = "Examples of (Y2O3-Gd2O3):Eu3+ and Y2O3:(Yb3+/Er3+) rare earth oxide-based phosphors are presented to highlight the controlled synthesis of 1D and 2D nanostructures through simple hydrothermal method. Conversion of the starting nitrates mixture into carbonate hydrate phase is performed with the help of ammonium hydrogen carbonate solution during hydrothermal treatment at 200 degrees C/3 h. Morphological architectures of rare earth oxides obtained after subsequent powders thermal treatment at 600 and 1100 degrees C for 3 and 12 h and their correlation with the optical characteristics are discussed based on X-ray powder diffractometry, field emission scanning electron microscopy, infrared spectroscopy and photoluminescence measurements. Strong red and green emission followed by the superior decay times are attributed to the high powders purity and homogeneous dopants distribution over the host lattice matrix. (c) 2013 Elsevier B.V. All rights reserved.",
journal = "Optical Materials",
title = "Hydrothermal synthesis of nanostructured Y2O3 and (Y0.75Gd0.25)(2)O-3 based phosphors",
volume = "35",
number = "10",
pages = "1817-1823",
doi = "10.1016/j.optmat.2013.03.006"
}

Mančić, L., Lojpur, V., Marinković, B. A., Dramićanin, M.,& Milošević, O.. (2013). Hydrothermal synthesis of nanostructured Y2O3 and (Y0.75Gd0.25)(2)O-3 based phosphors. in Optical Materials, 35(10), 1817-1823.
https://doi.org/10.1016/j.optmat.2013.03.006

Mančić L, Lojpur V, Marinković BA, Dramićanin M, Milošević O. Hydrothermal synthesis of nanostructured Y2O3 and (Y0.75Gd0.25)(2)O-3 based phosphors. in Optical Materials. 2013;35(10):1817-1823.
doi:10.1016/j.optmat.2013.03.006 .

Mančić, Lidija, Lojpur, Vesna, Marinković, Bojan A., Dramićanin, Miroslav, Milošević, Olivera, "Hydrothermal synthesis of nanostructured Y2O3 and (Y0.75Gd0.25)(2)O-3 based phosphors" in Optical Materials, 35, no. 10 (2013):1817-1823,
https://doi.org/10.1016/j.optmat.2013.03.006 . .

TY  - CONF
AU  - Dugandžić, Ivan
AU  - Jovanović, Dragana J.
AU  - Mančić, Lidija
AU  - Šaponjić, Zoran
AU  - Milošević, Olivera
AU  - Nedeljković, Jovan
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/500
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7456
AB  - Set of colloidal TiO2 nanoparticles solutions (TiO2 NPs) were surface modified with the different quantities of dopamine (DA) and then are used as precursors for the synthesis of DA modified submicronic TiO2 particles (DA-TiO2 SPs). Low temperature (150 oC) aerosol-assisted route (spray drying) is used for the generation of the un-agglomerated spherical particles with the mean size of 430 nm that are composited from much smaller crystalline sub-units. Detailed structural and morphological characterization of DA-TiO2 NPs and SPs were performed by X-ray powder diffraction (XRPD) analysis, scanning and transmission electron microscopy (SEM/TEM) and laser particle size (LPS) analysis. Particles surface structure and optical properties were followed using FT-IR and UV-Vis spectroscopy. Observed optical characteristics of both DA-TiO2 NPs and DA-TiO2 SPs expose narrowing of effective band gap for the same value of 1.3 eV implicating the preservation of colloidal nanoparticles characteristics in submicronic powders.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade
T1  - Aerosol-assisted Processing of Dopamine-TiO2 Colloidal Solution
SP  - 27
EP  - 27
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7456
ER  - 

@conference{
author = "Dugandžić, Ivan and Jovanović, Dragana J. and Mančić, Lidija and Šaponjić, Zoran and Milošević, Olivera and Nedeljković, Jovan",
year = "2012",
abstract = "Set of colloidal TiO2 nanoparticles solutions (TiO2 NPs) were surface modified with the different quantities of dopamine (DA) and then are used as precursors for the synthesis of DA modified submicronic TiO2 particles (DA-TiO2 SPs). Low temperature (150 oC) aerosol-assisted route (spray drying) is used for the generation of the un-agglomerated spherical particles with the mean size of 430 nm that are composited from much smaller crystalline sub-units. Detailed structural and morphological characterization of DA-TiO2 NPs and SPs were performed by X-ray powder diffraction (XRPD) analysis, scanning and transmission electron microscopy (SEM/TEM) and laser particle size (LPS) analysis. Particles surface structure and optical properties were followed using FT-IR and UV-Vis spectroscopy. Observed optical characteristics of both DA-TiO2 NPs and DA-TiO2 SPs expose narrowing of effective band gap for the same value of 1.3 eV implicating the preservation of colloidal nanoparticles characteristics in submicronic powders.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade",
title = "Aerosol-assisted Processing of Dopamine-TiO2 Colloidal Solution",
pages = "27-27",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7456"
}

Dugandžić, I., Jovanović, D. J., Mančić, L., Šaponjić, Z., Milošević, O.,& Nedeljković, J.. (2012). Aerosol-assisted Processing of Dopamine-TiO2 Colloidal Solution. in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade
Belgrade : Serbian Ceramic Society., 27-27.
https://hdl.handle.net/21.15107/rcub_vinar_7456

Dugandžić I, Jovanović DJ, Mančić L, Šaponjić Z, Milošević O, Nedeljković J. Aerosol-assisted Processing of Dopamine-TiO2 Colloidal Solution. in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade. 2012;:27-27.
https://hdl.handle.net/21.15107/rcub_vinar_7456 .

Dugandžić, Ivan, Jovanović, Dragana J., Mančić, Lidija, Šaponjić, Zoran, Milošević, Olivera, Nedeljković, Jovan, "Aerosol-assisted Processing of Dopamine-TiO2 Colloidal Solution" in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade (2012):27-27,
https://hdl.handle.net/21.15107/rcub_vinar_7456 .

TY  - CONF
AU  - Dugandžić, Ivan
AU  - Jovanović, Dragana J.
AU  - Mančić, Lidija
AU  - Šaponjić, Zoran
AU  - Nedeljković, Jovan
AU  - Milošević, Olivera
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/501
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7457
AB  - It is highly desirable to induce significant red-shift in the optical absorption edges of TiO2 phases so that this class of low-cost and environmentally friendly materials can be used as effective optical absorbing materials in photovoltaic cells. This work focuses on studying the formation of charge transfer (CT) complex, between TiO2 surface and dopamine as surface modifier, that induced significant red-shift of optical absorption in comparison to unmodified TiO2 particles. For that purpose, the submicronic sized TiO2 particles were synthesized at 150 0C by means of ultrasonic spray pyrolysis route using two different approaches for powder processing differing on how the precursor solution was made. In the first one, the colloidal source solution of unmodified TiO2nanoparticles was used as precursor solution and the particles were additionally modified by dopamine after completing the synthesis procedure. In the second approach, the dopamine modification of source colloidal TiO2 nanoparticles preceded to powder processing. From Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM) images it can be concluded that both groups of dopamine modified submicronic spheres have diameter of approximately 430 nm and contain small primary building units (Figure 1a and 1b). The surface structure and optical properties of resulting particles were analyzed using Fourier Transform Infrared (FT-IR) and UV-Vis spectroscopy investigations. The FT-IR measurements show that dopamine successfully formed CT complex at TiO2 surface. Based on the significant red shift on diffusive reflectance spectra (Figure 1c) it was estimated the effective band-gap value for all observed samples as to be ~1.3 eV.
PB  - Belgrade : Agencija FORMAT
C3  - ICOM 2012: The 3rd International Conference on the Physics of Optical Materials and Devices: Book of Abstract
T1  - The optical properties of dopamine-TiO2 submicronic sized particles
SP  - 23
EP  - 23
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7457
ER  - 

@conference{
author = "Dugandžić, Ivan and Jovanović, Dragana J. and Mančić, Lidija and Šaponjić, Zoran and Nedeljković, Jovan and Milošević, Olivera",
year = "2012",
abstract = "It is highly desirable to induce significant red-shift in the optical absorption edges of TiO2 phases so that this class of low-cost and environmentally friendly materials can be used as effective optical absorbing materials in photovoltaic cells. This work focuses on studying the formation of charge transfer (CT) complex, between TiO2 surface and dopamine as surface modifier, that induced significant red-shift of optical absorption in comparison to unmodified TiO2 particles. For that purpose, the submicronic sized TiO2 particles were synthesized at 150 0C by means of ultrasonic spray pyrolysis route using two different approaches for powder processing differing on how the precursor solution was made. In the first one, the colloidal source solution of unmodified TiO2nanoparticles was used as precursor solution and the particles were additionally modified by dopamine after completing the synthesis procedure. In the second approach, the dopamine modification of source colloidal TiO2 nanoparticles preceded to powder processing. From Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM) images it can be concluded that both groups of dopamine modified submicronic spheres have diameter of approximately 430 nm and contain small primary building units (Figure 1a and 1b). The surface structure and optical properties of resulting particles were analyzed using Fourier Transform Infrared (FT-IR) and UV-Vis spectroscopy investigations. The FT-IR measurements show that dopamine successfully formed CT complex at TiO2 surface. Based on the significant red shift on diffusive reflectance spectra (Figure 1c) it was estimated the effective band-gap value for all observed samples as to be ~1.3 eV.",
publisher = "Belgrade : Agencija FORMAT",
journal = "ICOM 2012: The 3rd International Conference on the Physics of Optical Materials and Devices: Book of Abstract",
title = "The optical properties of dopamine-TiO2 submicronic sized particles",
pages = "23-23",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7457"
}

Dugandžić, I., Jovanović, D. J., Mančić, L., Šaponjić, Z., Nedeljković, J.,& Milošević, O.. (2012). The optical properties of dopamine-TiO2 submicronic sized particles. in ICOM 2012: The 3rd International Conference on the Physics of Optical Materials and Devices: Book of Abstract
Belgrade : Agencija FORMAT., 23-23.
https://hdl.handle.net/21.15107/rcub_vinar_7457

Dugandžić I, Jovanović DJ, Mančić L, Šaponjić Z, Nedeljković J, Milošević O. The optical properties of dopamine-TiO2 submicronic sized particles. in ICOM 2012: The 3rd International Conference on the Physics of Optical Materials and Devices: Book of Abstract. 2012;:23-23.
https://hdl.handle.net/21.15107/rcub_vinar_7457 .

Dugandžić, Ivan, Jovanović, Dragana J., Mančić, Lidija, Šaponjić, Zoran, Nedeljković, Jovan, Milošević, Olivera, "The optical properties of dopamine-TiO2 submicronic sized particles" in ICOM 2012: The 3rd International Conference on the Physics of Optical Materials and Devices: Book of Abstract (2012):23-23,
https://hdl.handle.net/21.15107/rcub_vinar_7457 .

TY  - CONF
AU  - Mančić, Lidija
AU  - Lojpur, Vesna
AU  - Rabanal, Maria Eugenia
AU  - Dramićanin, Miroslav
AU  - Milošević, Olivera
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/535
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7474
AB  - Sub-micronic, spherical Y203:Yb/Er particles comprising clustered nano-units were prepared through ultrasonic spray pyrolysis of pure nitrate precursor solutions that contain different Yb/Er dopants ratio (10, 5 and 2). The particles obtained were additionally heat-treated at 1100°C for 12, 24 and 48 hours. Detailed structural and morphological analyses were done through X-ray powder diffraction (XRPD), scanning and transmission electron microscopy (SEM/TEM), specific surface area (BET), particle size distribution (LPS) and Fourier Transform Infrared Spectroscopy (FTIR). Obtained results are further correlated with advanced powder optical properties confirmed by efficient up-conversion emissions of Er3+in: blue (407-420 nm, 2H9/2→4I15/2), green (510-590 nm, 2H11/2, 4S3/2→4I15/2) and red (640-720 nm, 4F9/2→4I15/2) spectra. The corresponding lifetimes in the function of temperature will be also presented and discussed.
PB  - Univerzitet u Beogradu, Tehnološko-metalurški fakultet
C3  - Characterization and Applications of Nanostructured Materials and Nanotechnology : 1st International Conference Processing, NanoBelgrade 2012 : program and the book of abstracts : Belgrade
T1  - Up-converting characteristics of Y203:Yb/Er nanocrystalline powders obtained through spray pyrolysis
SP  - 63
EP  - 63
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7474
ER  - 

@conference{
author = "Mančić, Lidija and Lojpur, Vesna and Rabanal, Maria Eugenia and Dramićanin, Miroslav and Milošević, Olivera",
year = "2012",
abstract = "Sub-micronic, spherical Y203:Yb/Er particles comprising clustered nano-units were prepared through ultrasonic spray pyrolysis of pure nitrate precursor solutions that contain different Yb/Er dopants ratio (10, 5 and 2). The particles obtained were additionally heat-treated at 1100°C for 12, 24 and 48 hours. Detailed structural and morphological analyses were done through X-ray powder diffraction (XRPD), scanning and transmission electron microscopy (SEM/TEM), specific surface area (BET), particle size distribution (LPS) and Fourier Transform Infrared Spectroscopy (FTIR). Obtained results are further correlated with advanced powder optical properties confirmed by efficient up-conversion emissions of Er3+in: blue (407-420 nm, 2H9/2→4I15/2), green (510-590 nm, 2H11/2, 4S3/2→4I15/2) and red (640-720 nm, 4F9/2→4I15/2) spectra. The corresponding lifetimes in the function of temperature will be also presented and discussed.",
publisher = "Univerzitet u Beogradu, Tehnološko-metalurški fakultet",
journal = "Characterization and Applications of Nanostructured Materials and Nanotechnology : 1st International Conference Processing, NanoBelgrade 2012 : program and the book of abstracts : Belgrade",
title = "Up-converting characteristics of Y203:Yb/Er nanocrystalline powders obtained through spray pyrolysis",
pages = "63-63",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7474"
}

Mančić, L., Lojpur, V., Rabanal, M. E., Dramićanin, M.,& Milošević, O.. (2012). Up-converting characteristics of Y203:Yb/Er nanocrystalline powders obtained through spray pyrolysis. in Characterization and Applications of Nanostructured Materials and Nanotechnology : 1st International Conference Processing, NanoBelgrade 2012 : program and the book of abstracts : Belgrade
Univerzitet u Beogradu, Tehnološko-metalurški fakultet., 63-63.
https://hdl.handle.net/21.15107/rcub_vinar_7474

Mančić L, Lojpur V, Rabanal ME, Dramićanin M, Milošević O. Up-converting characteristics of Y203:Yb/Er nanocrystalline powders obtained through spray pyrolysis. in Characterization and Applications of Nanostructured Materials and Nanotechnology : 1st International Conference Processing, NanoBelgrade 2012 : program and the book of abstracts : Belgrade. 2012;:63-63.
https://hdl.handle.net/21.15107/rcub_vinar_7474 .

Mančić, Lidija, Lojpur, Vesna, Rabanal, Maria Eugenia, Dramićanin, Miroslav, Milošević, Olivera, "Up-converting characteristics of Y203:Yb/Er nanocrystalline powders obtained through spray pyrolysis" in Characterization and Applications of Nanostructured Materials and Nanotechnology : 1st International Conference Processing, NanoBelgrade 2012 : program and the book of abstracts : Belgrade (2012):63-63,
https://hdl.handle.net/21.15107/rcub_vinar_7474 .

TY  - JOUR
AU  - Mančić, Lidija
AU  - Lojpur, Vesna
AU  - Barroso, Ignacio
AU  - Rabanal, Maria Eugenia
AU  - Milošević, Olivera
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7448
AB  - Polycrystalline fine powders of yttrium aluminate doped with Ce3+ were synthesised by spray pyrolysis of a polymeric precursor, which was obtained by dissolving the corresponding nitrates in a solution of ethylenediaminetetraacetic acid (EDTA) in ethylene glycol (EG). Aerosol decomposition was performed at 550 °C followed by an additional thermal treatment (900–1100 °C). The yield of either a single yttrium aluminium perovskite (YAP) phase or a single yttrium aluminium garnet (YAG) phase was investigated as a function of the predefined yttrium/aluminium ratio, the cerium doping concentration, the processing temperature, and the thermal-treatment regime, which included the variation of the heating and cooling rates (dT/dt), the residence time (τ), and the atmosphere. Changes in the composition and structure of the precursor during thermal decomposition were investigated by thermogravimetric and differential thermal analysis (TGA/DTA) and FTIR spectroscopy. The particle morphology and structure were analysed by a combination of scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM/EDS) and by high-resolution transmission electron microscopy (HR-TEM). The structural refinement was based on the phase identification performed by X-ray powder diffraction (XRPD). The emission spectra were recorded within the range 325–800 nm by applying excitation wavelengths of 297 (YAP) and 450 nm (YAG). The employed synthesis conditions assured the formation of spherical, non-agglomerated particles with well-developed surfaces and diameters between 200 and 800 nm. For a predefined Y/Al ratio of 1:1, lower processing temperatures combined with longer heat treatments under stationary conditions resulted in a multiphase system, composed of YAP, YAG, and monoclinic yttrium aluminate (YAM) phases. However, a short heat treatment with a high heating rate (200 °C/min) at higher temperatures results in the formation of a kinetically favoured pure YAP hexagonal phase. On the other hand, for a predefined Y/Al ratio of 3:5, the generation of a thermodynamically favoured pure YAG phase has been confirmed, regardless of the applied heat-treatment conditions. Although incomplete, Ce3+ introduction into the host matrix has been detected by XRPD and luminescence measurements.
T2  - European Journal of Inorganic Chemistry
T1  - Synthesis of Cerium-Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route
SP  - 2716
EP  - 2724
DO  - 10.1002/ejic.201101053
ER  - 

@article{
author = "Mančić, Lidija and Lojpur, Vesna and Barroso, Ignacio and Rabanal, Maria Eugenia and Milošević, Olivera",
year = "2012",
abstract = "Polycrystalline fine powders of yttrium aluminate doped with Ce3+ were synthesised by spray pyrolysis of a polymeric precursor, which was obtained by dissolving the corresponding nitrates in a solution of ethylenediaminetetraacetic acid (EDTA) in ethylene glycol (EG). Aerosol decomposition was performed at 550 °C followed by an additional thermal treatment (900–1100 °C). The yield of either a single yttrium aluminium perovskite (YAP) phase or a single yttrium aluminium garnet (YAG) phase was investigated as a function of the predefined yttrium/aluminium ratio, the cerium doping concentration, the processing temperature, and the thermal-treatment regime, which included the variation of the heating and cooling rates (dT/dt), the residence time (τ), and the atmosphere. Changes in the composition and structure of the precursor during thermal decomposition were investigated by thermogravimetric and differential thermal analysis (TGA/DTA) and FTIR spectroscopy. The particle morphology and structure were analysed by a combination of scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM/EDS) and by high-resolution transmission electron microscopy (HR-TEM). The structural refinement was based on the phase identification performed by X-ray powder diffraction (XRPD). The emission spectra were recorded within the range 325–800 nm by applying excitation wavelengths of 297 (YAP) and 450 nm (YAG). The employed synthesis conditions assured the formation of spherical, non-agglomerated particles with well-developed surfaces and diameters between 200 and 800 nm. For a predefined Y/Al ratio of 1:1, lower processing temperatures combined with longer heat treatments under stationary conditions resulted in a multiphase system, composed of YAP, YAG, and monoclinic yttrium aluminate (YAM) phases. However, a short heat treatment with a high heating rate (200 °C/min) at higher temperatures results in the formation of a kinetically favoured pure YAP hexagonal phase. On the other hand, for a predefined Y/Al ratio of 3:5, the generation of a thermodynamically favoured pure YAG phase has been confirmed, regardless of the applied heat-treatment conditions. Although incomplete, Ce3+ introduction into the host matrix has been detected by XRPD and luminescence measurements.",
journal = "European Journal of Inorganic Chemistry",
title = "Synthesis of Cerium-Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route",
pages = "2716-2724",
doi = "10.1002/ejic.201101053"
}

Mančić, L., Lojpur, V., Barroso, I., Rabanal, M. E.,& Milošević, O.. (2012). Synthesis of Cerium-Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route. in European Journal of Inorganic Chemistry, 2716-2724.
https://doi.org/10.1002/ejic.201101053

Mančić L, Lojpur V, Barroso I, Rabanal ME, Milošević O. Synthesis of Cerium-Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route. in European Journal of Inorganic Chemistry. 2012;:2716-2724.
doi:10.1002/ejic.201101053 .

Mančić, Lidija, Lojpur, Vesna, Barroso, Ignacio, Rabanal, Maria Eugenia, Milošević, Olivera, "Synthesis of Cerium-Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route" in European Journal of Inorganic Chemistry (2012):2716-2724,
https://doi.org/10.1002/ejic.201101053 . .

TY  - CONF
AU  - Lojpur, Vesna
AU  - Nikolić, M.
AU  - Mančić, Lidija
AU  - Dramićanin, Miroslav
AU  - Milošević, Olivera
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/507
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7460
AB  - Fine yttrium oxide powders doped with Yb3+ and co-doped either with Tm3+ or Ho3+ were synthesized via spray pyrolysis at 900 °C using 0.1 M nitrate precursor. Synthesized powders were additionally thermally treated at 1100 °C for 24h. The characterization was done through X-ray powder diffraction (XRPD), scanning electron microscopy (SEM) and photoluminescent measurements (PL). Generation of cubic bixbyte-structure with space group Ia-3 is confirmed in all samples. Spherical particles with the mean size of ~ 380 nm generated through volume precipitation and collision of much smaller nano grains expose certain degree of porosity which increase further with the powder calcination. Powder’s optical characterization includes infrared, visible and ultraviolet spectra measurements as well as determination of the lifetime. The amplified emission intensities and enhanced lifetime in thermally treated samples are correlated with the powders morphological and structural changes.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade
T1  - Up-conversion Luminescence in Ho3+ and Tm3+ co-doped Y2O3 :Yb3+ Fine Powders
SP  - 26
EP  - 26
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7460
ER  - 

@conference{
author = "Lojpur, Vesna and Nikolić, M. and Mančić, Lidija and Dramićanin, Miroslav and Milošević, Olivera",
year = "2012",
abstract = "Fine yttrium oxide powders doped with Yb3+ and co-doped either with Tm3+ or Ho3+ were synthesized via spray pyrolysis at 900 °C using 0.1 M nitrate precursor. Synthesized powders were additionally thermally treated at 1100 °C for 24h. The characterization was done through X-ray powder diffraction (XRPD), scanning electron microscopy (SEM) and photoluminescent measurements (PL). Generation of cubic bixbyte-structure with space group Ia-3 is confirmed in all samples. Spherical particles with the mean size of ~ 380 nm generated through volume precipitation and collision of much smaller nano grains expose certain degree of porosity which increase further with the powder calcination. Powder’s optical characterization includes infrared, visible and ultraviolet spectra measurements as well as determination of the lifetime. The amplified emission intensities and enhanced lifetime in thermally treated samples are correlated with the powders morphological and structural changes.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade",
title = "Up-conversion Luminescence in Ho3+ and Tm3+ co-doped Y2O3 :Yb3+ Fine Powders",
pages = "26-26",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7460"
}

Lojpur, V., Nikolić, M., Mančić, L., Dramićanin, M.,& Milošević, O.. (2012). Up-conversion Luminescence in Ho3+ and Tm3+ co-doped Y2O3 :Yb3+ Fine Powders. in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade
Belgrade : Serbian Ceramic Society., 26-26.
https://hdl.handle.net/21.15107/rcub_vinar_7460

Lojpur V, Nikolić M, Mančić L, Dramićanin M, Milošević O. Up-conversion Luminescence in Ho3+ and Tm3+ co-doped Y2O3 :Yb3+ Fine Powders. in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade. 2012;:26-26.
https://hdl.handle.net/21.15107/rcub_vinar_7460 .

Lojpur, Vesna, Nikolić, M., Mančić, Lidija, Dramićanin, Miroslav, Milošević, Olivera, "Up-conversion Luminescence in Ho3+ and Tm3+ co-doped Y2O3 :Yb3+ Fine Powders" in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade (2012):26-26,
https://hdl.handle.net/21.15107/rcub_vinar_7460 .