高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (S1): 165.

• 研究论文 • 上一篇    下一篇

ZnO-TiO2和WO3-TiO2复合薄膜光催化剂的制备与性能

成英之1, 张渊明1, 唐渝1, 毛萱2, 初蕾1   

  1. 1. 暨南大学化学系, 广州 510632;
    2. 暨南大学生物医学工程研究所, 广州 510632
  • 收稿日期:2001-07-02 出版日期:2001-12-31 发布日期:2001-12-31
  • 通讯作者: 张渊明(1964年出生),男,博士,副教授,从事催化剂制备与表征研究.

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

CHENG Ying-Zhi1, ZHANG Yuan-Ming1, TANG Yu1, MAO Xuan2, CHU Lei1   

  1. 1. Department of Chemistry, Guangzhou 510632, China;
    2. lnstitute of Biomedical Engineering, Jinan University, Guangzhou 510632, China
  • Received:2001-07-02 Online:2001-12-31 Published:2001-12-31

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摘要：

采用溶胶一凝胶法在多孔钛片上制备了 ZnO-TiO2和WO3-TiO2复合半导体光催化剂,用甲基橙的光催化降解反应对所得薄膜的催化活性进行评价,并通过XRD和DTA等手段对样品进行了表征.结果表明,ZnO和WO3的掺入降低了TiO2的相转变温度,ZnO适宜掺杂量为0.1 mol%, WO3适宜掺杂量为0.5 mol%, ZnO-TiO2和WO3-TiO2复合薄膜比纯TiO2薄膜光催化活性分別高出77.0%和96.7%.

关键词: 二氧化钛, 二氧化锌, 三氧化钨, 复合光催化剂, 薄膜

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

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