Long and Well-Separated TiO2 Nanowire Arrays Decorated with Au Nanoparticles for Visible-Light-Driven Photoelectrochemical Water Splitting

被引：12
作者：
Xing, Yicai [1 ]
Sheng, Xia [1 ]
Zhou, Hang [1 ]
Wang, Dandan [1 ]
Chen, Xi [1 ]
Feng, Xinjian [1 ]
机构：
[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2022年 / 126卷 / 04期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
CHARGE-TRANSPORT; NANORODS; GROWTH; LENGTH;
D O I：
10.1021/acs.jpcc.1c10081
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Photoelectrodes based on TiO2 decorated with Au nanoparticles (NPs) (Au-TiO2) have attracted great attention for visible-light-driven photoelectrochemical (PEC) water splitting applications. Herein, we report a highly efficient visible-light-responsive photoanode composed of Au NPs decorated well-separated TiO2 nanowire (NW) arrays with a length up to over 9 mu m. The photocurrent was found to be about 16 times higher than that of bare TiO2 NWs under visible-light illumination. Moreover, the photocurrent increased linearly with NW length, suggesting good charge dynamic properties and efficient utilization of the decorated Au NPs of the photoanode. These results indicate that the long and well-separated NW arrays have great potential for future development of PEC devices.
引用
收藏
页码：1966 / 1971
页数：6
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