INVESTIGATION OF WO3-DOPED TiO2 FILM

INVESTIGATION OF WO3-DOPED TiO2 FILM COMPOSITE PHOTOCATALYST

Abstract： The nano-crystal composite WO3-TiO2 photocatalyst was prepared by ultrasonic assisted sol-gel process. The effects of various factors, such as the crystal form, the substrates, the pH, the dissolved oxygen and the ultrasonic on the photocatalytic activity were investigated in view of the photodegradation of Rhodamine B. The results show that the crystal form of WO3-TiO2 film with highest photocatalytic activity is futile. The introduction of ultrasonic to the course of preparation can accelerate the deposit time of the sol and increase the photocatalytic activity significantly in view of the highest photodegradation of Rhodamine B being 72.7% in 5 hours. The porous titanium plate is the most suitable substrate in four kinds of investigated materials.Meanwhile the smaller the pH and the higher the concentration of the dissolved oxygen in the solution is, the higher the photodegradation is. 作 者： Q.F.Meng    K.R.Liu    L.Jiang    Q.Han    J.S.Chen    X.J.Wei   作者單位： School of Materials & Metallurgy, Northeastern University, Shenyang 110004, China  期 刊： 金屬學(xué)報(bào)(英文版)  ISTICEI   Journal： ACTA METALLURGICA SINICA  年，卷(期)： 2004, 17(3)  分類號(hào)：   Keywords： ultrasonic    sol-gel process    photocatalytic    photodegradation   

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