| 几种氯代烃的光催化降解试验研究 |
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| 引用本文： | 陈翔,张铁垣.几种氯代烃的光催化降解试验研究[J].北京师范大学学报(自然科学版),1997,33(2):270-274. |
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| 作者姓名： | 陈翔 张铁垣 |
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| 作者单位： | [1]北京师范大学环境科学研究所 [2]北京师范大学分析测试中心 |
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| 摘 要： | 在紫外光源－ＴｉＯ２半导体催化体系中，对环境中需优先控制的污染物三氯甲烷，二氯甲烷，三氯乙烯进行了光催化降解试验，结果表明：降解过程属于一级动力学反应，依据反应动力学方程得出催化剂投加量，氯代烃种类对降解速率的影响，添加金属离子能提高反应效率，在试验条件下，提高光催化降解促进作用锌，铁。
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| 关 键 词： | 有机污染物 光催化 氯代烃 降解 半导体催化剂 |
EXPERIMENTAL RESEARCH ON PHOTOCATALYTIC DEGRADATION OF SEVERAL TYPES OF CHLOROHYDROCARBON |
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| Chen Xiang, Xu Jialin, Zhang Tieyuan.EXPERIMENTAL RESEARCH ON PHOTOCATALYTIC DEGRADATION OF SEVERAL TYPES OF CHLOROHYDROCARBON[J].Journal of Beijing Normal University(Natural Science),1997,33(2):270-274. |
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| Authors: | Chen Xiang Xu Jialin Zhang Tieyuan |
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| Abstract: | Photocatalytic degradation experiments were conducted in ultraviolet light source-titanium dioxide semiconductor system using priority pollutants, i. e., chloroform,dichloromethane, and trichloroethylene in water solution as targets. The results revealed that the degradation process belongs to first-order kinetic reaction. According to the kinetic equations,the effacts of catalyst dose and cholorohydrocarbon types on the degradation rate were determined and the improvement of the rate by addition of metals was proved. Under the experimental conditions of this study, the promoting degree of Ag-loaded TiO2, was higher than that of Zn - loaded and Fe - loaded TiO2. |
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| Keywords: | organic pollutants semi-conductor photocatalytic oxidation chlorohydrocarbon |
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