Photodegradation of Rhodamine B over unexcited semiconductor compounds of BiOCl and BiOBr
Photodegradation of Rhodamine B over unexcited semiconductor compounds of BiOCl and BiOBr
复制标题
BiOCl 和 BiOBr 未激发半导体化合物上罗丹明 B 的光降解
DOI：
10.1016/j.jcis.2012.03.021
复制
发表时间：
2012-07-01
影响因子：
9.9
通讯作者：
Ji, Guangbin
中科院分区：
文献类型：
--
作者：
Chang, Xiaofeng;Gondal, M. A.;Ji, Guangbin
This study reported, for the first time systematically, photodegradation of Rhodamine B (RhB) in aqueous solution over BiOCl and BiOBr semiconductors. Under visible light irradiation (lambda > 400 nm, lambda > 420 nm and lambda = 550 +/- 15 nm), RhB adsorbed on the surface of BiOCl and BiOBr was photosensitized and decomposed effectively over unexcited BiOCl and BiOBr. The degradation of Methyl Orange (MO) and Methylene Blue (MB) over BiOCl and BiOBr was investigated as well, and the results were compared with RhB photodegradation. It was found that MB molecules having the lowest LUMO could not be degraded by this process. Utilizing the quantum chemical calculation (Gaussian 03 program), the relationship between frontier orbital energy of selected dye molecules and photodegradation rate was established for the first time in this study. Crown Copyright (C) 2012 Published by Elsevier Inc. All rights reserved.
