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Formation of Mesoporous Heterostructured BiVO 4 /Bi 2 S 3 Hollow Discoids with Enhanced Photoactivity
Author(s) -
Gao Xuehui,
Wu Hao Bin,
Zheng Lingxia,
Zhong Yijun,
Hu Yong,
Lou Xiong Wen David
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201403611
Subject(s) - heterojunction , photocatalysis , mesoporous material , aqueous solution , semiconductor , materials science , nanotechnology , visible spectrum , ion exchange , chemical engineering , ion , chemistry , catalysis , optoelectronics , organic chemistry , engineering
Semiconductor heterostructures are of great interest in a wide range of applications. In this work, we design and synthesize a novel heteronanostructure with controlled relative composition, i.e., BiVO 4 /Bi 2 S 3 hollow discoid‐like particles with mesoporous shell. The synthesis involves a facile anion exchange process by reacting pre‐synthesized BiVO 4 discoid‐like particles with Na 2 S in an aqueous solution. Benefiting from the unique structural features and the formation of heterostructure, the as‐prepared BiVO 4 /Bi 2 S 3 hollow discoids exhibit significantly enhanced photoelectrochemical current response and photocatalytic activity for reduction of Cr VI under visible‐light illumination.