影像科学与光化学 ›› 2004, Vol. 22 ›› Issue (4): 266-271.DOI: 10.7517/j.issn.1674-0475.2004.04.266

• 研究简报 • 上一篇    下一篇

Zn-TiO2/AC复合催化剂的制备及其光催化活性

吴遵义, 杜玉扣, 华南平, 沈明, 杨平   

  1. 苏州大学化学化工学院, 江苏, 苏州, 215006
  • 收稿日期:2003-11-17 修回日期:2004-02-23 出版日期:2004-07-23 发布日期:2004-07-23
  • 通讯作者: 杨平
  • 基金资助:
    国家自然科学基金(90207026)

Preparation and Photocatalytic Activity of Zn-TiO2/AC Catalysts

WU Zun-yi, DU Yu-kou, HUA Nan-ping, SHEN Ming, YANG Ping   

  1. Department of Chemistry of Suzhou University, Suzhou 215006, Jiangsu, P.R. China
  • Received:2003-11-17 Revised:2004-02-23 Online:2004-07-23 Published:2004-07-23

摘要: 以硝酸锌、钛酸四丁酯和活性炭为原料,采用真空吸附法制备了不同组成的Zn TiO2/AC.通过X射线衍射(XRD)和透射电镜(TEM)对催化剂进行了表征.选择较难降解的Cl3CCOOH作为探针分子考察了其光催化活性.结果表明,掺锌能提高TiO2/AC的催化活性,当Zn的摩尔分数为0.5%(相对TiO2)、处理温度为400℃,溶液的pH值为6时,Zn TiO2/AC催化剂具有很好的光催化活性.

关键词: TiO2, Zn掺杂, 活性炭, 光催化活性, 三氯乙酸光降解

Abstract: The supported photocatalyst TiO2/AC doping with Zn2+ was prepared by means of vacuum absorption-hydrolysis method.The catalyst was characterized by XRD and TEM.The photocatalytic activity of samples was evaluated by the photodegradation of Cl3CCOOH.The result shows that the photocatalytic activities were significantly increased when the supported catalyst was doped with Zn2+ at optimal concentration (0.5 at.%).The highest photodegradation activity Cl3CCOOH can be reached under condition of Zn-TiO2/AC catalyst treated at 400 ℃ for 2 hours and pH=6 for the reaction solution.

Key words: TiO2, Zn-doping, actived carbon, photodegradation, trichloroacetic acid

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