Photocatalytic activity of TiO2 thin film - Effect of substrate

Abstract

TiO2 thin films on borosilicate glass and quartz glass substrates were prepared in order to investigate the influence of the substrate on photocatalytic activity. The preparation of TiO2 thin film was performed by sol-gel method. The influence of the substrate on TiO2 crystallization was examined at different TiO2 thin film sintering temperatures. The TiO2 thin film was irradiated with black-light fluorescent lamps. Photocatalytic activity was compared using trichloroethylene (TCE). The photocatalytic activity of the TiO2 thin film was confirmed to vary with the substrate. The crystal structures of the TiO2 thin films prepared on the glass substrates were examined using X-ray diffraction analysis, and the UV absorption of the thin film was measured by means of a spectrophotometer.