几种典型有毒有机污染物的光催化降解研究  

Study on photocatalytic degradation of some typical poisonous organic compounds

作　　者：桑雪梅[1] 全学军[1] 陶长元[2] 李军[1] 王富平[1] 

机构地区：[1]重庆工学院化学与生物工程学院,重庆400050 [2]重庆大学化学化工学院,重庆400044

出　　处：《化学研究与应用》2009年第2期180-183,共4页Chemical Research and Application

基　　金：重庆市科技攻关项目(CSTC2005AC7107)

摘　　要：本文研究了氯代苯酚和苯胺类化合物的光催化降解,探讨了这些有机污染物分子的氯取代和化合物毒性与光催化降解之间的关系。研究表明,氯代苯酚和苯胺类化合物的光催化降解均符合表观一级反应动力学模型。有机物分子中氯取代基的引入加快了化合物的光催化降解,且反应速率随氯取代基个数的增多而增大。光催化降解的表观速率常数与正辛醇-水分配系数之间存在有较好的线性关系:logk=alogKow+b,该模型可以用于有机污染物的光催化降解性预测。The photocatalytic degradation of some chlorine substituted phenols and anilines were investigated in this paper. The effect of chlorine substitution on the photocatalytic degradation of the compounds, the relationship between the poisonous data and photocatalytie degradation were explored. The photocatalytic degradation of the compounds is in accordance with apparent first order reaction kinetics model well. Chlorine substitution in the organic compounds helps to the photocatalytie degradation of the pollutants, and the apparent reaction rate constant increases with the number of chlorine substitution. There is a better linear relationship between the apparent rate constants and octanol-water partition coefficients ,i. e. logk =logk=alogKow＋b,which could be used for the prediction of photocatalytic degradation of the pollutants using present Kowdata.

关 键 词：氯苯酚 氯苯胺 光催化降解 分子结构 logKow 

分 类 号：O643.3[理学—物理化学] X703[理学—化学]