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金属矿山 ›› 2008, Vol. 38 ›› Issue (10): 126-130.

• 安全与环保 • 上一篇    下一篇

网固定TiO2薄膜的制备及光催化性能研究

雷绍民1,占长林1,Bo Jin2,黄橙1,许天翼1   

  1. 1.武汉理工大学;2.澳大利亚阿德莱德大学
  • 收稿日期:2008-08-10 出版日期:2008-10-15 发布日期:2011-07-13
  • 基金资助:

    国家863计划项目(编号:2007AA06z123),澳大利亚国家研究计划项目(编号:LP0562076)。

Research on the Preparation of TiO2 Film Immobilized on Wire Net and Its Photocatalytic Performance

Lei Shaomin1,Zhan Changlin1,Bo Jin2,Huang Cheng1,Xu Tianyi1   

  1. 1.Wuhan University of Technology;2.The University of Adelaide,Australia
  • Received:2008-08-10 Online:2008-10-15 Published:2011-07-13

摘要: 采用TiO2胶体合成—不锈钢金属网表面浸渍提拉法镀TiO2胶体膜—焙烧工艺制备网固定TiO2薄膜光催化材料,并以偶氮染料废水为降解对象,研究了镀膜次数、焙烧温度以及偶氮染料初始浓度对材料光催化活性的影响。结果表明:镀膜5次后在700 ℃下焙烧2 h,可以得到光催化性能优异的金属网固定TiO2薄膜。用该制品对浓度为27 mg/L的偶氮染料废水光降解3 h,降解脱色率达到99.07%。TiO2晶体膜在金属网表面键合牢固,重复使用仍保持良好的光催化活性。

关键词: 网固定TiO2薄膜, 光催化, 偶氮染料, 镀膜次数, 焙烧温度

Abstract: The effects of film coating number, roasting temperature and initial concentration of azo dye on the photocatalytic activity of immobilized titanium dioxide film of metal wire net were investigated, which was prepared by TiO2 colloid synthesis, TiO2 colloid film coating on stainless steel net surface by dip-coating method and then its immobilization on the net by roasting. The results indicate that the film can have excellent photocatalytic performances when roasted at 600~700 ℃ for 2 hours. When it is used to make a photo degradation for three hours for 27 mg/L azo dye, the decolorization rate of azo dye reaches 99.07%. The crystal film is bonded tightly on the metal net surface t, and will keep a good photocatalytic activity when the film is used repeatedly.

Key words: TiO2 film immobilized on wire net, Photocatalysis, azo dye, Film coating number, Roasting temperature