Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 35, Issue 15, Pages 8199-8205Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2009.12.091
Keywords
Water splitting; Photocatalysis; ZnO-CdS; Z-scheme; Core-shell
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Stability and efficiency are important to realize the practical applications of photocatalysts for photocatalytic hydrogen evolution from water splitting. ZnO-CdS core-shell nanorods with a wide absorption range were designed and synthesized by a two-step route. The ZnO-CdS core-shell nanorods exhibit stable and high photocatalytic activity for water splitting into hydrogen in the presence of S2- and SO32- as sacrificial reagents. Furthermore, the photocatalytic activity and stability of ZnO-CdS core-shell nanorods/RuO2 co-catalyst is superior to that of ZnO-CdS core-shell nanorods/Pt co-catalyst. The merits of stable ZnO and CdS, core-shell and nanorod structures employed are considered to contribute to the favorable photocatalytic hydrogen evolution of ZnO-CdS core-shell nanorods. (c) 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
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