Amorphous NiCoB-coupled MAPbI 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 form the NiCoB/MAPbI composite photocatalyst by electrostatic self-assembly.