Structural and photocatalytic properties of TiO2/SiOx/TiOx multi-layer prepared by electron-beam evaporation method |
| |
Authors: | Woo Kyung Lee Sung Hong Hahn |
| |
Affiliation: | a Department of Physics, University of Ulsan, Ulsan 680-749, South Korea b Department of Chemical Engineering, University of Ulsan, Ulsan 680-749, South Korea |
| |
Abstract: | TiO2/SiOx/TiOx multi-layers on quartz glass were prepared by electron-beam evaporation method and their structural and photocatalytic properties were investigated. The photocatalytic activity of the TiO2/SiOx/TiOx multi-layer was evaluated by the photodecomposition of methylene blue in aqueous solution. As the thickness of the SiOx inter-layer increased, the surface roughness of the TiO2/SiOx/TiOx multi-layer increased but the anatase crystallite size decreased. The TiO2/SiOx(80 nm)/TiOx multi-layer exhibited excellent photocatalytic activity resulting from higher surface roughness and more trap levels in the SiOx(80 nm) inter-layer. |
| |
Keywords: | Electron-beam evaporation TiO2 SiOx Multi-layer Photocatalytic activity |
本文献已被 ScienceDirect 等数据库收录! |