期刊
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
卷 215, 期 1, 页码 76-80出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotochem.2010.07.026
关键词
BiOCl; Chlorides; Chlorine radical; Photocatalysis; Photostability
资金
- National Science Foundation of China [20777015]
- National Basic Research Program of China [2010CB732306, 2007CB613301]
- Fundamental Research Funds for the Central Universities
BiOCl exhibited high photocatalytic activities for the degradation of rhodamine B, methyl orange and phenol. Surface chloride ions were adverse to the BiOCl photocatalysis and dissociated from BiOCl via reaction with photogenerated holes and electrons under UV irradiation. Conduction band electrons of BiOCl directly reduced either chlorine radical or the azo-bond of MO during the photocatalytic process. Hydroxyl radical was the main oxidative species in the BiOCl photocatalysis, whose generation can be accelerated via enhancing the conduction band electron consumption by MO. After the photocatalytic reaction, the dissolved chloride ion would spontaneously recombine back to the BiOCl photocatalyst. hence qualifies BiOCl as a practical high-activity photocatalyst with long lifetime. (C) 2010 Elsevier B.V. All rights reserved.
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