Mechanochemical Synthesis of Lead‐Free Perovskite‐Like MA3Bi2I9 for Photo‐Catalytic Hydrogen Production

In this study, a highly air stable and eco-friendly methyl ammonium bismuth iodide (MA3 Bi2 I9 ) perovskite-like material has been prepared. After physiochemical characterizations, the synthesized MA3 Bi2 I9 was utilized as photo-catalyst towards hydrogen production. It is important to design and synthesize lead (Pb)-free perovskite-like material (MA3 Bi2 I9 ) for photo-catalytic hydrogen-production applications. The synthesized MA3 Bi2 I9 exhibits excellent photo-catalytic hydrogen generation with a production rate of 11.43 μmolg-1 h-1 . In the presence of a platinum co-catalyst, the hydrogen production rate further increases to 172.44 μmolg-1 h-1 . The MA3 Bi2 I9 photo-catalyst also demonstrates excellent cyclic stability.