Photocatalytic degradation of azo dyes by BiOX (X = Cl, Br)

被引：40

作者：

Yu Zhiyong ^{[1
]}

Bahnemann, Detlef ^{[2
]}

Dillert, Ralf ^{[2
]}

Lin, Song ^{[3
]}

Lu Liqin ^{[1
]}

机构：

[1] Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China

[2] Leibniz Univ Hannover, Inst Tech Chem, D-30167 Hannover, Germany

[3] Renmin Univ China, Sch Environm, Beijing 100872, Peoples R China

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2012年 / 365卷

关键词：

Photocatalytic activity; Azo dye; BiOX; (X; Cl; Br); Photodegradation; RHODAMINE-B; NANOPARTICLES;

D O I：

10.1016/j.molcata.2012.07.001

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 work presents the preparation and photocatalytic activity of BiOX (X = Cl, Br), it is feasible to prepare BiOX by the hydrolysis of BiX3 (X = Cl, Br). Both BiOCl and BiOBr show photocatalytic activity for the photodegradation of azo dyes (methyl orange and congo red) under the simulated sunlight. We have measured the HO center dot generated in the above process by terephthalic acid indirectly. Both BiOCl and BiOBr have been characterized by XPS, DRS. SEM, TEM, XRD and xi potential. XPS data indicate that the surfaces of the BiOX samples are covered by low amounts of adsorbed azo dye molecules or/and intermediates produced during the dye photodecomposition. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.

引用

页码：1 / 7

页数：7

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