Amorphous NiCoB-coupled MAPbI 3 for efficient photocatalytic hydrogen evolution

It was thought that the organic-inorganic hybrid perovskite MAPbI could be used to collect visible light for the photocatalytic hydrogen evolution reaction (HER). However, its ability to generate H is limited. Herein, we synthesized amorphous NiCoB through a redox method and coupled it with MAPbI to...

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Published in:Dalton transactions : an international journal of inorganic chemistry 2021-12, Vol.50 (48), p.17960-17966
Main Authors: Jiang, Lanxuan, Guo, Yanmei, Qi, Shaopeng, Zhang, Ke, Chen, Jinxi, Lou, Yongbing, Zhao, Yixin
Format: Article
Language:English
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Summary:It was thought that the organic-inorganic hybrid perovskite MAPbI could be used to collect visible light for the photocatalytic hydrogen evolution reaction (HER). However, its ability to generate H is limited. Herein, we synthesized amorphous NiCoB through a redox method and coupled it with MAPbI to form the NiCoB/MAPbI composite photocatalyst by electrostatic self-assembly. 30% NiCoB/MAPbI exhibited the maximum H generation yield of 2625.57 μmol g h , which was approximately 114 fold that of pristine MAPbI and much better than that of Pt/MAPbI . In addition to the excellent photocatalytic HER capability, NiCoB/MAPbI maintained good stability in the 24 h cycling hydrogen evolution experiment. The photoelectric analysis showed that NiCoB as a cocatalyst could realize rapid charge separation. This work can offer a reference for the construction of efficient photocatalysts based on lead halide perovskites.
ISSN:1477-9226
1477-9234
DOI:10.1039/D1DT03633E