摘要
研究了几种芳香化合物的光催化 臭氧联用降解。探讨了光催化 臭氧联用技术降解有机物作用机理,分析了芳香化合物结构与反应活性的关系。实验结果表明,光催化 臭氧联用对芳香化合物的降解都存在一定的协同效应,而且符合表观准一级反应动力学规律;203#膜光催化臭氧的作用机理是催化臭氧产生了更多的高活性氧化剂,芳香化合物结构对其光催化 臭氧联用降解活性有很大影响。
The combined photocatalysis and ozone degradation of several aromatic compounds was investigated, and the mechanism of organics degradation with the technique of combined photocatalysis and ozone was analyzed, and the quantitative relationship between structures of aromatic compounds and their reactivities was discussed as well. Results indicated that a synergic effect of combined photocatalysis and ozone on the decomposition of aromatic compounds exists, and degradation of aromatic compounds follows apparent pseudo-first-order reaction kinetics. The reaction mechanism using 203# catalyst in photocatalysis of ozone is that catalytic decomposition of ozone can produce more highly active oxidants. The structure of aromatic compounds also has a great effect on the reactivity of combined photocatalysis and ozone degradation.
出处
《环境科学与技术》
CAS
CSCD
2004年第B08期15-18,共4页
Environmental Science & Technology
关键词
芳香化合物
光催化
臭氧
结构活性
aromatic compounds
photocatalysis
ozone
structure reactivity
