| 改性TiO2薄膜对水杨酸光催化降解的影响 |
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| 引用本文： | 王有乐,王玉双,杨艳丽.改性TiO2薄膜对水杨酸光催化降解的影响[J].兰州理工大学学报,2007,33(4):67-70. |
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| 作者姓名： | 王有乐 王玉双 杨艳丽 |
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| 作者单位： | 兰州大学,资源环境学院,甘肃,兰州,730000 |
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| 摘 要： | 利用溶胶-凝胶法制备TiO2薄膜光催化剂,考察掺杂铁、银离子改性与酸处理的TiO2薄膜以及有微量H2O2存在时光催化降解水杨酸的活性,并对改性薄膜光催化降解水杨酸的动力学进行研究.实验表明:改性后的TiO2薄膜光催化剂的活性均有不同程度的提高,其中体相掺铁和酸改性的TiO2薄膜光催化活性最高,并且改性的TiO2薄膜降解水杨酸过程符合一级反应;微量的H2O2存在使TiO2光催化降解效率明显提高.
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| 关 键 词： | TiO2薄膜 光催化活性 水杨酸 离子掺杂 酸处理 动力学 H2O2 |
| 文章编号： | 1673-5196（2007）04-0067-04 |
| 修稿时间： | 2006-11-10 |
Influence of modified TiO2 film on photocatalytic degradation of salicylic acid |
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| WANG You-le,WANG Yu-shuang,YANG Yan-li.Influence of modified TiO2 film on photocatalytic degradation of salicylic acid[J].Journal of Lanzhou University of Technology,2007,33(4):67-70. |
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| Authors: | WANG You-le WANG Yu-shuang YANG Yan-li |
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| Institution: | College of Resource and Envirorunental Science, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | Photocatalysts made of TiO2 films were prepared with sol-gel technique.The influence of doping Fe and Ag ions into TiO2 film and its acid-treatment for film modification on its catalytic activity for photocatalytic degradation of salicylic acid was investigated.The effect of existence of minute H2O2 on the degrading reaction was also studied.Meanwhile,the kinetics of photocatalytic degradation of salicylic acid with modified film was studied,also.The result of experiment showed that the activity of all modified TiO2 films as photocatalysts were improved to a certain extent.The both TiO2 films modified with doping of Fe3 and acid treatment had the most photocatalytic activity and the process of salicylic acid degradation with modified TiO2 film was consistent with first-order reaction.The existence of minute H2O2 made the efficiency of photocatalytic degradation with TiO2 film remarkably improved. |
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| Keywords: | TiO2 film photocatalytic activity salicylic acid ion doping acid treatment kinetics H2O2 |
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