Highly efficient H-2 evolution over ZnO-ZnS-CdS heterostructures from an aqueous solution containing SO32- and S2-ions

Wang, Xuewen, Liu, Gang, Chen, Zhi-Gang, Li, Feng, Lu, Gao Qing and Cheng, Hui-Ming (2010) Highly efficient H-2 evolution over ZnO-ZnS-CdS heterostructures from an aqueous solution containing SO32- and S2-ions. Journal of Materials Research, 25 1: 39-44. doi:10.1557/JMR.2010.0018

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Author Wang, Xuewen
Liu, Gang
Chen, Zhi-Gang
Li, Feng
Lu, Gao Qing
Cheng, Hui-Ming
Title Highly efficient H-2 evolution over ZnO-ZnS-CdS heterostructures from an aqueous solution containing SO32- and S2-ions
Formatted title
Highly efficient H2 evolution over ZnO-ZnS-CdS heterostructures from an aqueous solution containing SO32− and S2− ions
Journal name Journal of Materials Research   Check publisher's open access policy
ISSN 0884-2914
Publication date 2010-01-01
Sub-type Article (original research)
DOI 10.1557/JMR.2010.0018
Volume 25
Issue 1
Start page 39
End page 44
Total pages 6
Place of publication Warrendale, PA, U.S.A.
Publisher Materials Research Society
Collection year 2011
Language eng
Subject 0912 Materials Engineering
Formatted abstract
ZnO-ZnS-CdS heterostructure photocatalysts for water splitting were designed and prepared by a wet chemistry method. It was found that ZnO-ZnS-CdS heterostructures are highly active photocatalysts for H2 evolution under simulated solar light irradiation in an aqueous solution containing SO32- and S2- ions as sacrificial reagents. H2 evolution with (ZnO)2-(ZnS)1-(CdS)1 heterostructure reaches up to 2790 μmol h−1 g−1. The photoexcited electrons in the ZnO-ZnS-CdS heterostructures have a much longer lifetime (>225 ns) than that of the sole ZnO, ZnS, and CdS (<65 ns). The favorable interface processes of the heterostructures make a significant contribution to high photocatalytic H2 evolution rate.
© 2010 Materials Research Society.
Keyword Visible-light irradiation
Z-scheme
Water
Photocatalyst
Hydrogen
Nanocrystals
Fluorescence
Mediator
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Sun, 07 Feb 2010, 10:03:37 EST