高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (7): 1310.

• 研究论文 • 上一篇    下一篇

铝材表面状态对TiO2薄膜光催化性能和光致亲水性的影响

戴文新, 王绪绪, 邵宇, 付贤智, 刘平   

  1. 福州大学光催化研究所, 福州 350002
  • 收稿日期:2003-06-24 出版日期:2004-07-24 发布日期:2004-07-24
  • 通讯作者: 王绪绪(1955年出生),男,教授,博士生导师,从事光催化研究.E-mail:xwang@fzu.edu.cn E-mail:xwang@fzu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:20133010);福建省科技计划项目(批准号:2002H008);教育部与福建省教育厅重点项目(批准号:01059,JA01002)资助

Effect of Surface State of Al Sheet on Photocatalytic Behavior and Photoinduced Hydrophilicity of TiO2 Film

DAI Wen-Xin, WANG Xu-Xu, SHAO Yu, FU Xian-Zhi, LIU Ping   

  1. Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, China
  • Received:2003-06-24 Online:2004-07-24 Published:2004-07-24

摘要: 在纯铝片和具有氧化铝层的铝片上用提拉法制备TiO2/Al和TiO2/Al2O3/Al样片,通过FTIRATR技术和密闭间歇式反应装置分别考察了TiO2薄膜对油酸和乙烯的光催化降解性能,通过测试接触角考察TiO2薄膜的光致亲水性.结果表明,TiO2/Al2O3/Al对油酸的光降解性能比TiO2/Al的好,但其光催化氧化乙烯性能和光致亲水性能较差.这种差别可通过不同过程的作用机理和Al与TiO2表面的电子转移作用得到较好解释,由此得出TiO2薄膜的光催化性能与光致亲水性可能是两种既有联系又相互独立的性质

关键词: 光催化, 光致亲水性, TiO2薄膜, 铝片, 电子转移

Abstract: TiO2 films on the surface of Al2O3/Al and pure Al sheet were prepared by a dip-coating technique of TiO2 colloid. The photocatalytic degradation of oleic acid and photocatalytic oxidation of C2H4 on the samples were studied by FTIR ATR technique and a batch reactor, respectively, and the photoinduced hydrophilic property of the samples was evaluated by water contact-angle. Compared to TiO2/Al, TiO2/Al 2O3/Al showed a higher activity of photocatalytic degradation for oleic acid, but lower activity of photocatalytic oxidation of C2H 4 and poorer photoinduced hydrophilic property. The diversity could be explained with the help of difference of the reaction mechanism and the transfer of electron between Al and TiO2. The result suggests that photocatalysis and photoinduced hydrophilicity of TiO2 film are dependent and independent on each other.

Key words: Photocatalysis, Photoinduced hydrophilic property, TiO2 film, Al sheet, Electron transfer

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