摘要
在探索纳米TiO2光催化降解甲基橙的最佳条件后,对纳米TiO2及其改性光催化剂CdS/TiO2、Ag+/TiO2光催化降解甲基橙性能进行了动力学研究,结果表明:纳米TiO2及其改性的CdS/TiO2、Ag+/TiO2的光催化反应符合动力学一级反应规律;三种光催化反应剂的光催化均存在诱导期,其中纳米TiO2光催化反应诱导期最长,其次是Ag+/TiO2光催化反应,而CdS/TiO2光催化反应诱导期最短;光催化反应降解甲基橙效率是:TiO2光催化反应最低,其次是Ag+/TiO2,CdS/TiO2效率最高.
The exploring process of the kinetics on the performance of photocatalytic degrading helianthine with nano TiO2 and its modified photocatalytic agent CdS/TiO2 and Ag ^＋/TiO2 is introduced in this paper after the optimum condition of helianthine being degraded by photocatalytic nano TiO2 is determined. The results indicate that the photocatalytie reaction of nano TiO2 and its modified CdS/TiO2 , Ag ^＋/TiO2 are in accordance with the characteristic of the first order reaction. An induction period exists in all of the three kinds of photocatalytic reaction agent, of which, the nano TiO2 is the longest, and Ag ^＋/TiO2 is longer, and the CdS/TiO2 is the shortest. The efficiencies, however, are in reverse order.
出处
《昆明理工大学学报（自然科学版）》
CAS
北大核心
2011年第4期57-60,74,共5页
Journal of Kunming University of Science and Technology(Natural Science)
基金
云南省教育厅基金项目(09C0014)
作者简介
李琴（1976-），女，博士研究生，讲师．主要研究方向：应用化学．E—mail：liqin6688@126．com
