Preparation and Properties of ZnO-TiO2 and WO3-TiO2 Composite Film Photocatalyst

Abstract

Abstract:

ZnO-TiO₂ and WO₃-TiO₂ composite film photocatalysts were prepared on porous titanium plates by sol-gel method. Their morphology and structure were characterized by XRD and DTA method. The photocatalystic activity of the film catalysts were investigated for photocatalysdc degradation of methyl orange. It was found that the Zn0-TiO₂ film photocataiyst calcined at 450℃ for 1 h with 0.1 mol%(molar percent) of ZnO showed higher photocatalytic activity than that of pure TiO₂ film by 77.0%, while the 0.5 mol% WO₃-doped TiO₂ film calcined at 450℃ for 1 h by 96.7%. TiO₂ supported on the porous titanium plates consists of both the anatase phase and the nitile phase, indicating that the addition of appropriate ZnO and WO₃ could effectively decrease the temperature of phase from anatase to rulile.

Key words: Titania, Tungsten oxide, Composite photocataiyst, Film

CLC Number:

O643

TrendMD:

CHENG Ying-Zhi, ZHANG Yuan-Ming, TANG Yu, MAO Xuan, CHU Lei. Preparation and Properties of ZnO-TiO₂ and WO₃-TiO₂ Composite Film Photocatalyst[J]. Chem. J. Chinese Universities, 2001, 22(S1): 165.

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Preparation and Properties of ZnO-TiO₂ and WO₃-TiO₂ Composite Film Photocatalyst

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