Citation: Yuanxing Fang, Yiwen Ma, Xinchen Wang. Efficient development of Type-II TiO₂ heterojunction using electrochemical approach for an enhanced photoelectrochemical water splitting performance[J]. Chinese Journal of Catalysis, ;2018, 39(3): 438-445. doi: 10.1016/S1872-2067(18)63037-2 shu

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

State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, Fujian, China

Received Date: 26 December 2017
Revised Date: 12 January 2018

Fund Project: This work was supported from the National Natural Science Foundation of China (21425309, 21761132002, 21703040), China Postdoctoral Science Foundation (2017M622051), and the 111 Project.

Type-Ⅱ-heterojunction TiO₂ nanorod arrays (NAs) are achieved by a combination of reduced and pristine TiO₂ NAs through a simple electrochemical reduction. The heterojunc-tion-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 Ⅱ structure leads to enhanced separation and transport of the electrons and charges. The proposed electro-chemical approach could be applied to various semiconductors for a control of the band struc-ture and improved photoelectrochemical performance.
- Type II heterojunction structure,
- Photoelectrochemical water splitting,
- TiO₂,
- Electrochemical reduction,
- Modification
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Efficient development of Type-II TiO₂ heterojunction using electrochemical approach for an enhanced photoelectrochemical water splitting performance