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

Wang XW; Liu G; Chen ZGLi FLu GQCheng HM

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

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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 SO32- and S2- ions as sacrificial reagents. H-2 evolution with (ZnO)(2)-(ZnS)(1)-(CdS)(1) heterostructure reaches up to 2790 mu mol 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.

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《Journal of Materials Research》 |2010年第1期|39-44|共6页
作者
Wang XW; Liu G; Chen ZGLi FLu GQCheng HM;
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作者单位

Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.;

Univ Queensland, Sch Engn, ARC Ctr Excellence Funct Nanomat, Brisbane, Qld 4072, Australia.;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种英语
中图分类工程材料学;
关键词
VISIBLE-LIGHT IRRADIATION; Z-SCHEME; WATER; PHOTOCATALYST; HYDROGEN; NANOCRYSTALS; FLUORESCENCE; MEDIATOR;

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

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