Experimental Strategy and Mechanistic View to Boost the Photocatalytic Activity of Cs₃Bi₂Br₉ Lead‐Free Perovskite Derivative by g‐C₃N₄ Composite Engineering

The rational design of heterojunctions based on metal halide perovskites (MHPs) is an effective route to create novel photocatalysts to run relevant solar‐driven reactions. In this work, an experimental and computational study on the synergic coupling between a lead‐free Cs 3 Bi 2 Br 9 perovskite derivative and g‐C 3 N 4 is presented. A relevant boost of the hydrogen photogeneration by more than one order of magnitude is recorded when going from...