| 附载TiO2光催化降解咪蚜胺农药 |
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| 引用本文： | 郑巍,刘维屏,宣日成,卢建杭. 附载TiO2光催化降解咪蚜胺农药[J]. 环境科学, 1999, 20(1): 73-76 |
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| 作者姓名： | 郑巍 刘维屏 宣日成 卢建杭 |
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| 作者单位： | 浙江大学化学系,杭州,310027 |
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| 基金项目： | 国家自然科学基金，29477274， |
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| 摘 要： | 以主波长３６５ｎｍ的黑炽荧光灯为光源，研究了由ＣＭＣ－Ｎａ附载ＴｉＯ２光催化降解咪蚜胺农药的过程。结果表明，咪蚜胺农药在３＊８Ｗ黑炽荧光灯照射下，经附载ＴｉＯ２作用３ｈ后可降解５０％以上，其光解可用假一级动力学方程表示。
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| 关 键 词： | 光催化 咪蚜胺 降解机理 降解速率 降解动力学 |
| 收稿时间： | 1998-04-10 |
| 修稿时间： | 1998-04-10 |
Photocatalytic Degradation of Pesticide Imidacloprid Using Adherent TiO2 Catalysts |
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| Zheng Wei,Liu Weiping,Xuan Richeng and Lu Jianghang. Photocatalytic Degradation of Pesticide Imidacloprid Using Adherent TiO2 Catalysts[J]. Chinese Journal of Environmental Science, 1999, 20(1): 73-76 |
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| Authors: | Zheng Wei Liu Weiping Xuan Richeng Lu Jianghang |
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| Affiliation: | Department of Chemistry, Zhejiang University, Hangzhou 310027;Department of Chemistry, Zhejiang University, Hangzhou 310027;Department of Chemistry, Zhejiang University, Hangzhou 310027;Department of Chemistry, Zhejiang University, Hangzhou 310027 |
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| Abstract: | TiO2 catalysts adhered to the glass were used for investigating photocatalytic degradation of pesticide imidacloprid in aqueous solution under 3×8W fluorescent lamps.The results showed that the photocatalytic degradation rate of imidacloprid was high and up to above 50%.And the photolysis fit a first-order kinetic relationship well.The photolysis rate constant of imidacloprid decreased with increasing initial concentration,which was explained by two mechanisms of photocatalytic degradation.By contrast,adherent TiO2 films with adding Carboxymethyl Cellulose-Na to treat was not easy to take off and the catalytic activity would not drop.In addition,the feasibility the imidacloprid photocatalytic degradation under the sunlight was also studied. |
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| Keywords: | TiO2 |
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