• 关键词：腐殖酸  TiO₂膜  光催化氧化

• 基金项目：

• 魏宏斌
• 同济大学环境工程学院, 上海 200092

• 徐迪民
• 同济大学环境工程学院, 上海 200092

• 徐建伟
• 同济大学测试中心

• 摘要：二氧化钛(TiO₂)膜光催化氧化法处理水中腐殖酸(HA)技术避免了以往悬浮相光催化时催化剂难以分离回收等回题,具有良好的应用前景。研究了光源种类、TiO₂膜的表面修饰和HA水溶液的pH值等因素对HA光催化氧化效率的影响,讨论了有关的机理并合理解释了实验现象。

• Abstract：The photocatalytic oxidation of humic acid(HA) in aqueous solution using TiO₂ film as a catalyst was studied in compared to a dispersion system, in which the suspended TiO₂ particles were difficult to be separated and recovered. The method showed a good application perspective. The effects of the photosources, surface modifications of TiO₂ film and pH value of HA aqueous solution on photocatalytic oxidation efficiencies were investigated. The involved mechanism were discussed.

• Key words：humic acid  TiO₂ film  photocatalytic oxidation

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