Photocatalytic degradation kinetics of Rhodamine B cata- lyzed by nanosized TiO_2 film

作     者：WEI Gang, ZHANG Yuanjing & XIONG Rongchun College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China Correspondence should be addressed to Xiong Rongchun (e-mail: xiongrongchun@***) 

作者机构：College of Material Science and Engineering Beijing University of Chemical Technology Beijing 100029 China 

出 版 物：《Chinese Science Bulletin》 (CHINESE SCIENCE BULLETIN)

年 卷 期：2003年第48卷第1期

页      面：49-52页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：The authors express their gratitude to Prof. Liu Xiaoguang for his help. This work was supported by the National Key Technologies R&D Programme (Grant No. 2002BA313B01) 

主　　题：若丹明B 光催化降解 动力学 含染料废水 固定床光催化反应器 纳米级二氧化钛薄膜 TiO2 

摘      要：A fixed bed photocatalytic reactor was de-signed, and dynamic fast scan of UV-Vis adsorption spec-trum was adopted to study the photocatalytic degradation dynamic behavior of Rhodamine B, a kind of dye generally recognized as to be degraded difficultly, on the surface of nanosized TiO2 thin film. The results indicate that the photocatalytic degradation process of Rhodamine B does not comply with the first-order reaction kinetic process. As a result, a kinetic model of Rhodamine B photocatalytic deg-radation reaction is brought forward, and the model is proved by the theoretical deduction and experiment.