1. MoC/MAPbI3 hybrid composites for efficient photocatalytic hydrogen evolution.
- Author
-
Zhang, Tiantian, Yu, Jianfei, Huang, Jiyao, Lan, Shengnan, Lou, Yongbing, and Chen, Jinxi
- Subjects
HYDROGEN evolution reactions ,INTERSTITIAL hydrogen generation ,CHARGE transfer ,HYDROGEN ,HYDROGEN production ,PEROVSKITE ,CHARGE carriers - Abstract
Metal halide perovskites, such as iodine methylamine lead (MAPbI
3 ), have received extensive attention in the field of photocatalytic decomposition of HI for hydrogen evolution, due to their excellent photoelectric properties. In this paper, a new MAPbI3 -based composite, MoC/MAPbI3 , was synthesized. The results show that 15 wt% MoC/MAPbI3 has the best hydrogen production performance (38.4 μmol h−1 ), which is approximately 24-times that of pure MAPbI3 (1.61 μmol h−1 ). With the extension of the catalytic time, the hydrogen production rate of MoC/MAPbI3 reached 165.3 μmol h−1 after 16 h due to the effective separation and transfer of charge carriers between MoC and MAPbI3 , showing excellent hydrogen evolution rate performance under visible light. In addition, the cycling stability of MoC/MAPbI3 did not decrease in multiple 4 h cycle tests. This study used the non-precious metal promoter MoC to modify MAPbI3 , and provides a new idea for the synthesis of efficient MAPbI3 -based composite catalysts. [ABSTRACT FROM AUTHOR]- Published
- 2021
- Full Text
- View/download PDF