期刊
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
卷 26, 期 8, 页码 2094-2101出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S1003-6326(16)64324-8
关键词
water splitting; photoanode; heterostructured nanowires; CuO; TiO2
资金
- National Natural Science Foundation of China [21107032, 21473079]
- Department of Education of Zhejiang Province, China [Y201330088, Y20133003]
A new kind of self-standing CuO@TiO2 nanowires (NWs) film with hierarchical feature was prepared by a three-step protocol consisting of hydrothermal reaction, electroless plating, and branched growth processes. This heterostructured CuO@TiO2 NWs film demonstrates the favorable physical properties in the photoelectrochemical cell (PEC) water splitting, such as the hierarchical surface, the extended optical absorption range, and the rapid interface charge transfer kinetics. Under the illumination of the simulated solar light, the pristine TiO2 NWs film only attains a photocurrent density of 0.12 mA/cm(2) at 1.0 V versus reversible hydrogen electrode (RHE). Significantly, the CuO@TiO2 NWs film can yield a dramatically increased photocurrent density of 0.56 mA/cm(2) at the same applied voltage. Furthermore, amperometric I-t tests of the CuO@TiO2 NWs film reveal satisfactory stability. All the above characteristics of this heterostructured CuO@TiO2 NWs film indicate its great potential in the water splitting applications with solar visible light.
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