| 电助光催化氧化过程中羟基自由基（OH·）的定量分析 |
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| 引用本文： | 王海燕,蒋展鹏,杨宏伟.电助光催化氧化过程中羟基自由基（OH·）的定量分析[J].环境工程学报,2008,2(2):225-228. |
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| 作者姓名： | 王海燕 蒋展鹏 杨宏伟 |
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| 作者单位： | 1. 清华大学环境科学与工程系,北京,100084;中国环境科学研究院,北京,100012
2. 清华大学环境科学与工程系,北京,100084 |
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| 摘 要： | 电助光催化氧化技术是一种增强型的光催化氧化技术,应用前景广阔.对电助光催化氧化过程中产生的羟基自由基(OH·)进行定量分析对进一步探讨电场辅助作用机理十分重要.以对氯苯甲酸为探针化合物对电助光催化氧化过程中的OH·进行定量分析,发现电助光催化氧化过程中的OH·浓度是普通光催化氧化过程的2倍.对苯甲酰胺进行电助光催化氧化降解试验,求得了苯甲酰胺与羟基自由基的二级反应动力学常数.研究还对电场辅助作用机理进行了分析.
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| 关 键 词： | 光催化 电助光催化 羟基自由基 |
| 文章编号： | 1673-9108(2008)02-0225-04 |
| 收稿时间： | 2/7/2007 12:00:00 AM |
| 修稿时间： | 2007年2月7日 |
Quantitative analysis of OH · generated in electrically assisted photocatalysis |
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| Wang Haiyan,Jiang Zhanpeng and Yang Hongwei.Quantitative analysis of OH · generated in electrically assisted photocatalysis[J].Techniques and Equipment for Environmental Pollution Control,2008,2(2):225-228. |
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| Authors: | Wang Haiyan Jiang Zhanpeng and Yang Hongwei |
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| Abstract: | Electrically assisted photocatalysis(EAP) is one of the enhanced photocatalysis technology with wide application field. The quantitative analysis of hydroxyl radical (OH·) generated in EAP is very important for the research of EAP mechanism. This paper aimed at the quantitative analysis of OH· generated in EAP through probe compound method taking o-chlorine benzoic acid as the probe compoud. It was found that the concentration of OH· in EAP was twice larger than that in photocatalysis. The second order reaction dynamics constant of benzamide reacting with OH·was worked out through the degradation experiment of benzamide by EAP. The mechanism of EAP was analyzed. |
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