期刊
MATERIALS LETTERS
卷 120, 期 -, 页码 170-173出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2014.01.053
关键词
Platelike WO3; CdS QDs; Thin films; Water splitting; Solar energy materials
资金
- National High Technology Research and Development Program of China (863 Program) [2011AA050528]
- National Nature Science Foundation of China [21171175]
- Fundamental Research Funds for the Central Universities [2012QNZT12]
- Postdoctoral Science Foundation of Central South University
- Open-end Fund for the Valuable and Precison Instruments of Central South University [CSUZC2013002]
High chemical stability of WO2 photoelectrode sensitized with CdS quantum dots (QDs) was reported for the first time using nano-TiO2 as a buffer layer, permitting their stable operation for photoelectrochemical water splitting in a strongly. alkaline electrolyte solution. The CdS QDs modification of the TiO2/WO3 electrode resulted in an increase in the visible light absorption and exhibited a significant improvement in photoelectrochemical performance. The photocurrent density at 0.1 V (vs. Ag/AgCl) of the CdS QDs/TiO2/WO3 electrode is 10 times higher than that of the TiO2/WO3 electrode under visible light irradiation. The demonstrated strategies of utilizing a TiO2/WO3 structure to protect the WO3 electrode surface open up new opportunities for other WO3 nanostructures. (C) 2014 Elsevier B.V. All rights reserved.
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