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Enhancement of photocatalytic efficiency by in situ fabrication of BiOBr/BiVO4surface junctions
Yin, Wenzong; Sun, Xiang; Wang, Wenzhong
2017
Source PublicationJournal of Environmental Sciences (China)
ISSN10010742
Volume60Pages:78-83
AbstractSurface junctions between BiOBr and BiVO4were synthesized. The BiOBr/BiVO4with 1 wt.% of BiOBr exhibited the highest photocatalytic activity in the degradation of RhB under visible-light irradiation. It was found that the highly efficient adsorption of RhB molecules via the electrostatic attraction between Br−and cationic –N(Et)2group played a key role for the high photocatalytic activities of BiOBr/BiVO4. This efficient adsorption promoted the N-deethylation of RhB and thus accelerated the photocatalytic degradation of RhB. Moreover, the metal-to-metal charge transfer (MMCT) mechanism was proposed, which revealed the concrete path paved with Bi–O–Bi chains for the carrier migration in BiOBr/BiVO4. The interaction between photoexcited RhB* and the Bi3 +in BiVO4provided the driving force for the migration of photo-generated carriers along the Bi–O–Bi chains. This work has not only demonstrated the important role of efficient adsorption in the photocatalytic degradation of organic contaminants, but also developed a facile strategy to improve the efficiency of photocatalysts. © 2017
DOI10.1016/j.jes.2016.12.024
EI Accession Number20171403519572
EI KeywordsVanadium compounds
EI Classification Number602.1 Mechanical Drives - 802.2 Chemical Reactions - 802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 913.1 Production Engineering
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25515
Collection中国科学院上海硅酸盐研究所
AffiliationState Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China
Recommended Citation
GB/T 7714
Yin, Wenzong,Sun, Xiang,Wang, Wenzhong. Enhancement of photocatalytic efficiency by in situ fabrication of BiOBr/BiVO4surface junctions[J]. Journal of Environmental Sciences (China),2017,60:78-83.
APA Yin, Wenzong,Sun, Xiang,&Wang, Wenzhong.(2017).Enhancement of photocatalytic efficiency by in situ fabrication of BiOBr/BiVO4surface junctions.Journal of Environmental Sciences (China),60,78-83.
MLA Yin, Wenzong,et al."Enhancement of photocatalytic efficiency by in situ fabrication of BiOBr/BiVO4surface junctions".Journal of Environmental Sciences (China) 60(2017):78-83.
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