Photodegradation of Rhodamine B over unexcited semiconductor compounds of BiOCl and BiOBr

被引：194

作者：

Chang, Xiaofeng ^{[1
,2
]}

Gondal, M. A. ^{[2
]}

Al-Saadi, A. A. ^{[3
]}

Ali, M. A. ^{[4
]}

Shen, Hefei ^{[1
]}

Zhou, Qin ^{[5
]}

Zhang, Jun ^{[1
]}

Du, Mengping ^{[1
]}

Liu, Yousong ^{[1
]}

Ji, Guangbin ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Dept Appl Chem, Coll Mat Sci & Technol, Nanjing 211100, Jiangsu, Peoples R China

[2] King Fahd Univ Petr & Minerals, Laser Res Grp, Dhahran 31261, Saudi Arabia

[3] King Fahd Univ Petr & Minerals, Dept Chem, Dhahran 31261, Saudi Arabia

[4] King Fahd Univ Petr & Minerals, Ctr Refining & Petrochem, Dhahran 31261, Saudi Arabia

[5] Chinese Acad Sci, State Key Lab Environm Aquat Chem, Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2012年 / 377卷

关键词：

BiOCl; BiOBr; Rhodamine B; Photosensitized degradation; Methyl Orange; Methylene Blue; PHOTOCATALYTIC ACTIVITY; VISIBLE-LIGHT; NANOPLATE MICROSPHERES; CL; DEGRADATION;

D O I：

10.1016/j.jcis.2012.03.021

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：291 / 298

页数：8

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