Efficient development of Type-II TiO2 heterojunction using electrochemical approach for an enhanced photoelectrochemical water splitting performance

被引：36

作者：

Fang, Yuanxing ^{[1
]}

Ma, Yiwen ^{[1
]}

Wang, Xinchen ^{[1
]}

机构：

[1] Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China

来源：

CHINESE JOURNAL OF CATALYSIS | 2018年 / 39卷 / 03期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Type ll heterojunction structure; Photoelectrochemical water splitting; TiO2; Electrochemical reduction; Modification; TITANIUM-DIOXIDE; NANOTUBE ARRAYS; THIN-FILMS; PHOTOANODES; PHOTOCATALYST; NANOPARTICLES; ABSORPTION; REDUCTION; EVOLUTION; NI;

D O I：

10.1016/S1872-2067(18)63037-2

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Type-II-heterojunction TiO2 nanorod arrays (NAs) are achieved by a combination of reduced and pristine TiO2 NAs through a simple electrochemical reduction. The heterojunction-structured TiO2 NAs exhibit an enhanced photo-efficiency, with respect to those of pristine TiO2 NAs and completely reduced black TiO2. The improved efficiency can be attributed to a synergistic effect of two contributions of the partially reduced TiO2 NAs. The light absorption is significantly increased, from the UV to the visible spectrum. Moreover, the type ll structure leads to enhanced separation and transport of the electrons and charges. The proposed electrochemical approach could be applied to various semiconductors for a control of the band structure and improved photoelectrochemical performance. (C) 2018, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

引用

页码：438 / 445

页数：8

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