Controlled hydrothermal processing of ZnO powders in the presence of PVP
Autori
Stanković, AnaStojanović, Zoran S.
Veselinović, Ljiljana M.
Marković, Smilja
Uskoković, Dragan
Ostala autorstva
Anić, S.Čupić, Željko
Konferencijski prilog (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
In this study low-temperature hydrothermal processing was used for synthesis of ZnO powders with controlled morphology, from micro rods, via hexagonal prism-like to nano-spheres, by varying [Zn2+]/[OH-] molar ratio. The synthesized powders were characterized using XRPD, FE-SEM, UV-Vis diffuse reflectance and Raman spectroscopy. It is noticed that the modification of the particle size and morphology from nanospheres to micro-rods resulted in increased visible light absorption. Besides, the band gap energy of the synthesized ZnO powders showed the red shift (-0.20eV) compared to bulk ZnO. The enhanced visible light absorption of the ZnO powders is related to the existence of lattice defects and the particle surface sensitization by PVP.
Ključne reči:
ZnO / hydrothermal processing / PVPIzvor:
Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry, 2012, 431-433Izdavač:
- Society of Physical Chemists of Serbia
Finansiranje / projekti:
- Molekularno dizajniranje nanočestica kontrolisanih morfoloških i fizičko-hemijskih karakteristika i funkcionalnih materijala na njihovoj osnovi (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45004)
Kolekcije
Institucija/grupa
VinčaTY - CONF AU - Stanković, Ana AU - Stojanović, Zoran S. AU - Veselinović, Ljiljana M. AU - Marković, Smilja AU - Uskoković, Dragan PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/7472 AB - In this study low-temperature hydrothermal processing was used for synthesis of ZnO powders with controlled morphology, from micro rods, via hexagonal prism-like to nano-spheres, by varying [Zn2+]/[OH-] molar ratio. The synthesized powders were characterized using XRPD, FE-SEM, UV-Vis diffuse reflectance and Raman spectroscopy. It is noticed that the modification of the particle size and morphology from nanospheres to micro-rods resulted in increased visible light absorption. Besides, the band gap energy of the synthesized ZnO powders showed the red shift (-0.20eV) compared to bulk ZnO. The enhanced visible light absorption of the ZnO powders is related to the existence of lattice defects and the particle surface sensitization by PVP. PB - Society of Physical Chemists of Serbia C3 - Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry T1 - Controlled hydrothermal processing of ZnO powders in the presence of PVP SP - 431 EP - 433 UR - https://hdl.handle.net/21.15107/rcub_vinar_7472 ER -
@conference{ author = "Stanković, Ana and Stojanović, Zoran S. and Veselinović, Ljiljana M. and Marković, Smilja and Uskoković, Dragan", year = "2012", abstract = "In this study low-temperature hydrothermal processing was used for synthesis of ZnO powders with controlled morphology, from micro rods, via hexagonal prism-like to nano-spheres, by varying [Zn2+]/[OH-] molar ratio. The synthesized powders were characterized using XRPD, FE-SEM, UV-Vis diffuse reflectance and Raman spectroscopy. It is noticed that the modification of the particle size and morphology from nanospheres to micro-rods resulted in increased visible light absorption. Besides, the band gap energy of the synthesized ZnO powders showed the red shift (-0.20eV) compared to bulk ZnO. The enhanced visible light absorption of the ZnO powders is related to the existence of lattice defects and the particle surface sensitization by PVP.", publisher = "Society of Physical Chemists of Serbia", journal = "Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry", title = "Controlled hydrothermal processing of ZnO powders in the presence of PVP", pages = "431-433", url = "https://hdl.handle.net/21.15107/rcub_vinar_7472" }
Stanković, A., Stojanović, Z. S., Veselinović, L. M., Marković, S.,& Uskoković, D.. (2012). Controlled hydrothermal processing of ZnO powders in the presence of PVP. in Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry Society of Physical Chemists of Serbia., 431-433. https://hdl.handle.net/21.15107/rcub_vinar_7472
Stanković A, Stojanović ZS, Veselinović LM, Marković S, Uskoković D. Controlled hydrothermal processing of ZnO powders in the presence of PVP. in Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry. 2012;:431-433. https://hdl.handle.net/21.15107/rcub_vinar_7472 .
Stanković, Ana, Stojanović, Zoran S., Veselinović, Ljiljana M., Marković, Smilja, Uskoković, Dragan, "Controlled hydrothermal processing of ZnO powders in the presence of PVP" in Physical chemistry 2012 : 11th international conference on fundamental and applied aspects of physical chemistry (2012):431-433, https://hdl.handle.net/21.15107/rcub_vinar_7472 .