Preparation and Optical Properties of SnO2/SiO2 Nanocomposite
FENG Yi-Si1, YAO Ri-Sheng1, ZHANG Li-De2
1School of Chemical Engineering, Hefei University of Technology, Anhui 230009
2Institute of Solid State Physics, Chinese Academy of Sciences, PO 1129 Box, Hefei 230031
Preparation and Optical Properties of SnO2/SiO2 Nanocomposite
FENG Yi-Si1;YAO Ri-Sheng1;ZHANG Li-De2
1School of Chemical Engineering, Hefei University of Technology, Anhui 230009
2Institute of Solid State Physics, Chinese Academy of Sciences, PO 1129 Box, Hefei 230031
Abstract： SnO2/SiO2 nanocomposites have been prepared by the soaking-thermal-decomposing method, tin oxide nanoparticles are uniformly dispersed in the mesopores of silica. The optical absorption edge of the obtained nanocomposite presents a redshift compared with bulk tin oxide. With the increasing annealing temperature during the procedure of the sample preparation, the optical absorption edge of the sample moves to shorter wavelength (blueshift). These optical properties can be ascribed to the amorphous structure and band defects of surface layers of the tin oxide nanoparticles.
2004, Vol. 21 
