Promoting hydrogen evolution of a g-C3N4-based photocatalyst by indium and phosphorus co-doping

An indium and phosphorus co-doped g-C₃N₄ photocatalyst (In,P-g-C₃N₄) was prepared by K₂HPO₄ post-treatment of an indium-doped g-C₃N₄ photocatalyst (In-g-C₃N₄) derived from in situ copolymerization of dicyandiamide and indium chloride.