TiO2 nanotube arrays decorated with plasmonic Cu, CuO nanoparticles, and eosin Y dye as efficient photoanode for water splitting

被引：19

作者：

Sang, Lixia ^{[1
]}

Zhang, Shan ^{[1
]}

Zhang, Jing ^{[1
]}

Yu, Zexin ^{[1
]}

Bai, Guangmei ^{[1
]}

Du, Chunxu ^{[1
]}

机构：

[1] Beijing Univ Technol, Key Lab Heat Transfer & Energy Conservat Beijing, Key Lab Enhanced Heat Transfer & Energy Conservat, Minist Educ,Coll Environm & Energy Engn, Beijing 100124, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2019年 / 231卷

基金：

中国国家自然科学基金;

关键词：

Water splitting; TiO2 nanotube arrays; Plasmonic Cu; CuO nanoparticles; Eosin Y dye; PHOTOCATALYTIC HYDROGEN-PRODUCTION; SENSITIZED SOLAR-CELLS; H-2; GENERATION; ELECTRODEPOSITION; DEGRADATION; IMPROVEMENT; STABILITY; EVOLUTION; TITANIA; DOTS;

D O I：

10.1016/j.matchemphys.2019.04.018

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photoelectrochemical (PEC) splitting of water over a semiconductor is an ideal and clean way to produce hydrogen by using solar energy. Herein, a photoanode of TiO2 nanotube arrays (TNTA) was decorated with environment-friendly Cu-based nanomaterials through a two-step electrochemical process, followed by sensitization with eosin Y dye, for PEC water splitting. The confirmations of Cu and CuO on the surface of TNTA were recorded by XRD combined with XPS techniques. The obtained Cu-CuO/TNTA and Eosin Y/Cu-CuO/TNTA electrodes exhibit good light absorption abilities in the range of 380-600 nm, and the adsorption of Eosin Y is enhanced. Based on the analysis of the charge transfer resistance and energy levels of Cu, CuO, TiO2, and eosin Y, it can be found that the deposition of Cu-CuO and eosin Y on TNTA can greatly accelerate the interface charge transfer, resulting in enhanced PEC performances. Moreover, the plasmonic Cu and eosin Y can help to harvest more visible light and further improve the photocurrent density.

引用

页码：27 / 32

页数：6

共 41 条

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