| 附载型复合光催化剂TiO2·SiO2/beads降解有机磷农药 |
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| 引用本文： | 张新荣,杨平,赵梦月.附载型复合光催化剂TiO2·SiO2/beads降解有机磷农药[J].环境污染与防治,2002,24(4):196-198. |
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| 作者姓名： | 张新荣 杨平 赵梦月 |
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| 作者单位： | 1. 哈尔滨工业大学应用化学系,哈尔滨,150001
2. 郑州工业大学化工学院,郑州,450002 |
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| 基金项目： | 国家科委重点科技攻关资助项目 ( 92 0 - 0 5- 0 2 ) |
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| 摘 要： | 研究以四异丙醇钛 Ti( iso- O C3 H7) 4]、硅酸乙酯为原料 ,以空心玻璃微球为载体 ,用溶胶—凝胶法制备可漂浮附载型复合光催化剂 Ti O2 · Si O2 / beads的过程 ,利用附载型复合光催化剂降解有机磷农药。结果表明 ,复合型光催化剂 Ti O2 · Si O2 摩尔比存在最佳值 ,n ( Ti O2 ) / m ( Si O2 ) =30 / 70时 ,光催化剂活性最高 ,其活性是同样降解条件下、同样含量 Degussa P- 2 5Ti O2 的 2倍左右。该光催化剂比表面大 ,吸附性强。并用 XRD和 SEM对附载型复合光催化剂进行表征
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| 关 键 词： | 复合型光催化剂 TiO_2·SiO_2 玻璃微球 农药 |
Photocatalytic degradation of organophosphorous pesticides using TiO2·SiO2 composite photocatalyst attached to hollow glass microbeads |
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| Zhang Xinrong,et al..Photocatalytic degradation of organophosphorous pesticides using TiO2·SiO2 composite photocatalyst attached to hollow glass microbeads[J].Environmental Pollution & Control,2002,24(4):196-198. |
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| Authors: | Zhang Xinrong |
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| Institution: | Zhang Xinrong,et al. Department of Applied Chemistry,Harbin Institute of Technology,Harbin 150001\, |
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| Abstract: | The preparation of TiO\-2\5SiO\-2 composite photocatalyst attached to the hollow glass microbeads surface by sol\|gel technique using titanium tetraisopropxide \Ti(iso\|OC\-3H\-7)\-4\] and tetraethoxysilane as materials were studied. The photocatalytic degradation of organophosphorous pesticides were investigated. The results show that composite photocatalyst TiO\-2\5SiO\-2 mole ratios have the best value. A ratio of 30/70 produces a catalyst about 2 times active than degussa P\|25 TiO\-2. Moreover, photocatalysts have large surface area and strong adsorption. Composite photocatalysts are characterized by XRD and SEM. |
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| Keywords: | Composite photocatalyst\ TiO\-2\5SiO\-2\ Hollow galss microbeads\ Pesticides |
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