期刊
ACS APPLIED MATERIALS & INTERFACES
卷 6, 期 19, 页码 17200-17207出版社
AMER CHEMICAL SOC
DOI: 10.1021/am505015j
关键词
photoelectrochemical cell; ZnIn2S4; TiO2; nanosheets; nanorods; heterjunction
资金
- National Natural Science Foundation [51422206, 51372159, 11304217]
- 1000 Youth Talents Plan
- Jiangsu Scientific and Technology Committee for Distinguished Young Scholars [BK20140009]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Jiangsu Shuangchuang Plan
We report the fabrication of 2D ZnIn2S4 nanosheet/1D TiO2 nanorod heterojunction arrays by a facile hydrothermal process and their use as photoelectrodes in a photoelectrochemical (PEC) cell for high-performance solar water splitting. The morphology, microstructure, and phase of pristine TiO2 and 2D ZnIn2S4 nanosheet/1D TiO2 nanorod heterojunction arrays were characterized in detail. PEC measurements showed that 2D/1D heterojunction arrays offered enhanced photocurrent density (3 times higher than that of pristine TiO2), negatively shifted onset potential from 0.05 to -0.53 V, and high light on/off cycle stability. Electrochemical impedance investigation attested to a significant improvement of the interface electron transfer kinetics in this heterojunction, thus facilitating electron-hole separation, transfer, and collection, which resulted in enhanced PEC properties.
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