Photochemical synthesis of bimetallic CuNiSxquantum dots onto g-C3N4as a cocatalyst for high hydrogen evolution

CuNiS x QDs were fabricated onto g-C 3 N 4 by photochemical deposition method. The small size can expose more active S sites on the edge and the introduction of Cu 2+ into NiS x can slightly modulate the electronic structure of Ni and S centers, thus weakening the S–H ads bonds.