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.
Keywords:
ZnO / hydrothermal processing / PVP
Source:
Physical Chemistry 2012 : proceedings. Vol. 1 / 11th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2012, Belgrade, Serbia, 2012, 431-433
TY - CONF
AU - Stanković, Ana
AU - Stojanović, Zoran S.
AU - Veselinović, Ljiljana
AU - Marković, Smilja
AU - Uskoković, Dragan
PY - 2012
UR - http://dais.sanu.ac.rs/123456789/530
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 - Belgrade : Society of Physical Chemists of Serbia
C3 - Physical Chemistry 2012 : proceedings. Vol. 1 / 11th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2012, Belgrade, Serbia
T1 - Controlled hydrothermal processing of ZnO powders in the presence of PVP
SP - 431
EP - 433
ER -
@conference{
author = "Stanković, Ana and Stojanović, Zoran S. and Veselinović, Ljiljana and Marković, Smilja and Uskoković, Dragan",
year = "2012",
url = "http://dais.sanu.ac.rs/123456789/530",
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 = "Belgrade : Society of Physical Chemists of Serbia",
journal = "Physical Chemistry 2012 : proceedings. Vol. 1 / 11th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2012, Belgrade, Serbia",
title = "Controlled hydrothermal processing of ZnO powders in the presence of PVP",
pages = "431-433"
}
Stanković A, Stojanović ZS, Veselinović L, Marković S, Uskoković D. Controlled hydrothermal processing of ZnO powders in the presence of PVP. Physical Chemistry 2012 : proceedings. Vol. 1 / 11th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2012, Belgrade, Serbia. 2012;:431-433
Stanković, A., Stojanović, Z. S., Veselinović, L., Marković, S.,& Uskoković, D. (2012). Controlled hydrothermal processing of ZnO powders in the presence of PVP.
Physical Chemistry 2012 : proceedings. Vol. 1 / 11th International Conference on Fundamental and Applied Aspects of Physical Chemistry, September 24-28, 2012, Belgrade, SerbiaBelgrade : Society of Physical Chemists of Serbia., null, 431-433.
Stanković Ana, Stojanović Zoran S., Veselinović Ljiljana, Marković Smilja, Uskoković Dragan, "Controlled hydrothermal processing of ZnO powders in the presence of PVP" null (2012):431-433
