Journal
NANOSCALE
Volume 5, Issue 23, Pages 11933-11939Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nr03493c
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Funding
- 973 Programs [2011CB933303, 2013CB632404]
- National Science Foundation of Jiangsu Province [BK2012015]
- Fundamental Research Funds for the Central Universities [1113020401, 1115020405, 1116020406]
- NSFC [20971048]
- Provincial Science Key Foundation of Higher Education Institutions of Anhui, China [KJ2011A053]
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High-quality one-dimensional WO3/CdS core/shell nanowire arrays used as photoanodes in photoelectrochemical (PEC) cells were for the first time prepared via a rational, two-step chemical vapor deposition process. The narrow band-gap CdS shell was homogeneously coated on the entire surface of as-grown WO3 core nanowire arrays, forming coaxial heterostructures. The one-dimensional core/shell heterostructure facilitates the photogenerated electron-hole pair separation and the electron transfer from CdS to WO3 nanowires under visible light illumination. Moreover, the core nanowire arrays provide a direct pathway for the electron transport. The present results imply that the WO3/CdS core/shell heterostructure nanowire arrays may be useful in the design of nanostructure photoanodes toward highly efficient PEC cells.
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