In:
Journal of Materials Research, Springer Science and Business Media LLC, Vol. 25, No. 1 ( 2010-01), p. 39-44
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 H 2 evolution under simulated solar light irradiation in an aqueous solution containing SO 3 2- and S 2- ions as sacrificial reagents. H 2 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 H 2 evolution rate.
Type of Medium:
Online Resource
ISSN:
0884-2914
,
2044-5326
DOI:
10.1557/JMR.2010.0018
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2010
detail.hit.zdb_id:
54876-5
detail.hit.zdb_id:
2015297-8
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