1. Enhanced solar absorption and photoelectrochemical properties of Al-reduced TiO2/TiO2−x/CdS heterojunction nanorods.
- Author
-
Li, Xiao, Hou, Jingshan, Wang, Jing, Huang, Yanwei, Zhao, Guoying, Zhang, Ganghua, and Fang, Yongzheng
- Subjects
HETEROJUNCTIONS ,PHOTOCATHODES ,NANORODS ,CHEMICAL solution deposition ,SILVER ,ABSORPTION ,ENERGY conversion ,ENERGY consumption - Abstract
Oxygen-deficient TiO
2 -based composites have attracted widespread attention due to their promoted light-harvesting capacity and energy conversion efficiency, beneficial for water splitting. Despite being a facile, secure-safe and undefiled route for preparing blackened TiO2 , the Al-reduction method has not been adopted for preparing TiO2 /TiO2−x /CdS composite films. Herein, TiO2 /TiO2−x /CdS composite nanorods were successfully fabricated by combining hydrothermal, Al-reduction and chemical bath deposition (CBD) techniques. Enhanced visible-light absorption and photoelectrochemical performances have been achieved using TiO2 /TiO2−x /CdS heterojunction nanorods. The photocurrent density of TiO2 /TiO2−x /CdS was obtained to be 7.75 mA cm−2 at 0 V vs. Ag/AgCl under AM 1.5 G illumination, which was 77.5-fold and 12.1-fold higher than those of bare TiO2 and CdS, respectively. This work may offer new insights for realizing TiO2 -based composites with improved solar absorption for photoelectrochemical applications. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF