Perovskite Microcrystals with Intercalated Monolayer MoS2 Nanosheets as Advanced Photocatalyst for Solar-Powered Hydrogen Generation
- Resource Type
- Authors
- Peng Fei Liu; Porun Liu; Zhengju Zhu; Hua Gui Yang; Lixue Jiang; Huajie Yin; Kun Zhao; Shan Chen; Dandan Cui; Huijun Zhao; Xiaojun Han; Xiaole Zhao; Jian Kang; Shuaiyu Jiang
- Source
- Matter. 3:935-949
- Subject
- Materials science
business.industry
Heterojunction
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
7. Clean energy
01 natural sciences
0104 chemical sciences
Chemical engineering
Hydrogen economy
Monolayer
Photocatalysis
General Materials Science
0210 nano-technology
business
Photocatalytic water splitting
Hydrogen production
Perovskite (structure)
Visible spectrum
- Language
- ISSN
- 2590-2385
Summary Photocatalytic water splitting holds a key to realizing the hydrogen economy but faces a grand challenge, namely, the severe charge recombination causes low solar-to-hydrogen (STH) efficiency. This work reports a new form of MAPbI3 microcrystal (MAPbI3-MC)/monolayer MoS2 nanosheets (ML-MoS2) composite photocatalyst with type II heterojunction to effectively suppress the charge recombination for efficient photocatalytic hydrogen generation via HI splitting. The ML-MoS2/MAPbI3-MC is made of a large-sized MAPbI3-MC light harvester anchored with electrocatalytically active ML-MoS2 nanosheets to form a type II heterojunction that possesses a strong built-in electric field aligned between the spatially well-defined MAPbI3-MC and ML-MoS2 nanosheets to empower the photocatalyst with superior capability to effectively promote the charge separation. The ML-MoS2/MAPbI3-MC brings the hydrogen generation performance of the perovskite-based photocatalysts to a new horizon with a champion STH efficiency of 1.09% and a record hydrogen generation activity of 13.6 mmol g−1 h−1 under visible light.