Ni and Mn co-doping perovskite CsBiBr3 for photocatalytic hydrogen production

An environmentally friendly and lead-free perovskite CsBiBr3 was co-doped by Ni and Mn successfully. Their structures and physicochemical features were systematically characterized. The biggest H2 evolution rate reaches 61.8 μmol g−1 h−1 for 1c under IR light irradiation, corresponding to an AQY of 0.67% and solar-to-chemical conversion efficiency of 0.46%, achieving 24 h-recycles of repeated H2 generation.