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Unusual reactivity of visible-light-responsive AgBr-BiOBr heterojunction photocatalysts

Unusual reactivity of visible-light-responsive AgBr-BiOBr heterojunction photocatalysts
Unusual reactivity of visible-light-responsive AgBr-BiOBr heterojunction photocatalysts
Great efforts are necessary to find the optimal constituent semiconductors to form synergistic semiconductor heterojunctions, particular p-n junctions, for the applications in electronics industrials and solar energy conversion. Despite that the n-type AgBr can be stable when coupled with other n-type semiconductors under light irradiation, photo-degradation of AgBr was discovered when it supported on p-type BiOBr to form p-n junctions for waste-water purification, no matter higher energy conversion efficiency of the optimal AgBr/BiOBr. The proposed working and degradation mechanisms clarified the fate of AgBr/BiOBr heterojunctions and provided insights to the heterojunction theory and its applications in solar energy conversion.
AgBr–BiOBr, heterojunction, photocatalysis, visible-light, rhodamine b, deactivation
0021-9517
116-125
Kong, Liang
3098eb13-8e15-4a85-a69a-65a5265a01c8
Jiang, Zheng
bcf19e78-f5c3-48e6-802b-fe77bd12deab
Lai, Henry H.
7e09c302-c2d3-4483-9374-f03174e3357a
Nicholls, Rebecca J.
3c33f2c2-f687-44e8-8f71-f0cd0a0472dc
Xiao, Tiancun
90161b4f-4483-4b4f-8db6-6614b001ac54
Jones, Martin O.
fea5068c-dfea-4857-a691-9d1b78f1654f
Edwards, Peter P.
1c8ab595-549c-4dca-b911-a46a94183e2b
Kong, Liang
3098eb13-8e15-4a85-a69a-65a5265a01c8
Jiang, Zheng
bcf19e78-f5c3-48e6-802b-fe77bd12deab
Lai, Henry H.
7e09c302-c2d3-4483-9374-f03174e3357a
Nicholls, Rebecca J.
3c33f2c2-f687-44e8-8f71-f0cd0a0472dc
Xiao, Tiancun
90161b4f-4483-4b4f-8db6-6614b001ac54
Jones, Martin O.
fea5068c-dfea-4857-a691-9d1b78f1654f
Edwards, Peter P.
1c8ab595-549c-4dca-b911-a46a94183e2b

Kong, Liang, Jiang, Zheng, Lai, Henry H., Nicholls, Rebecca J., Xiao, Tiancun, Jones, Martin O. and Edwards, Peter P. (2012) Unusual reactivity of visible-light-responsive AgBr-BiOBr heterojunction photocatalysts Journal of Catalysis, 293, pp. 116-125. (doi:10.1016/j.jcat.2012.06.011).

Record type: Article

Abstract

Great efforts are necessary to find the optimal constituent semiconductors to form synergistic semiconductor heterojunctions, particular p-n junctions, for the applications in electronics industrials and solar energy conversion. Despite that the n-type AgBr can be stable when coupled with other n-type semiconductors under light irradiation, photo-degradation of AgBr was discovered when it supported on p-type BiOBr to form p-n junctions for waste-water purification, no matter higher energy conversion efficiency of the optimal AgBr/BiOBr. The proposed working and degradation mechanisms clarified the fate of AgBr/BiOBr heterojunctions and provided insights to the heterojunction theory and its applications in solar energy conversion.

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Published date: September 2012
Keywords: AgBr–BiOBr, heterojunction, photocatalysis, visible-light, rhodamine b, deactivation
Organisations: Faculty of Engineering and the Environment

Identifiers

Local EPrints ID: 352791
URI: http://eprints.soton.ac.uk/id/eprint/352791
ISSN: 0021-9517
PURE UUID: adce74a2-837c-430f-a8b5-8ddd7c409b47
ORCID for Zheng Jiang: ORCID iD orcid.org/0000-0002-7972-6175

Catalogue record

Date deposited: 21 May 2013 11:07
Last modified: 18 Jul 2017 04:11

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Contributors

Author: Liang Kong
Author: Zheng Jiang ORCID iD
Author: Henry H. Lai
Author: Rebecca J. Nicholls
Author: Tiancun Xiao
Author: Martin O. Jones
Author: Peter P. Edwards

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