期刊
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
卷 -, 期 4, 页码 773-779出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201301310
关键词
Water splitting; Doping; Zinc; Quantum dots
资金
- National Science Council of Taiwan [NSC 101-2113-M-002-014-MY3]
Fossil fuels have been used for several decades and have resulted in increased greenhouse gases and pollutants. Currently, clean and renewable energy is in demand. Hydrogen appears to be a good candidate for clean energy because the only product of its reaction with oxygen is water. Water splitting by solar energy is a potential method for the generation of hydrogen in future applications. This study investigates the use of a CdTe quantum-dot-sensitized ZnO:N nanowire arrays for water splitting. The proposed method resulted in considerably enhanced photocurrent and stability. The electronic structures of the ZnO: N materials are also determined by O K-edge X-ray absorption spectroscopy. The incorporation of nitrogen into the ZnO nanostructure is determined by X-ray photoelectron spectroscopy and Zn K-edge X-ray absorption spectroscopy; the nitrogen incorporation changes the electronic state and, thus, increases the water-splitting performance.
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