Graphdiyne (g‐CnH2n−2)‐Supported Organic–Inorganic Composites with Zinc Cadmium Sulfide for Photocatalytic Hydrogen Evolution

As a new 2D carbon hybrid material, graphdiyne (GD) has attracted much attention due to its good conductivity, adjustable electronic structure, and special electron transfer enhancement properties. Due to its special properties, it has great potential in the field of photocatalytic hydrogen evolution. Considering the modification of GD from the perspective of nano size and bandgap matching, CuS@GDY hybrids to modify ZnCdS are introduced, and the sheet hybrid improved ZnCdS nanoparticles' dispersion. From another point of view, GD not only enhances the optical absorption of the composite but also acts as the main reduction site. Meanwhile, when GD appears in ZnCdS/CuS heterojunction in the form of an electronic bridge, the separation efficiency of photoinduced carriers in ternary system is greatly improved. Finally, the charge transfer mode of the composite system assisted by GD through radical trapping and in situ X‐ray photoelectron spectroscopy experiments are analyzed and verified. The ternary hybrid ZnCdS/CuS@GD prepared in this experiment has excellent photoelectrochemical properties and stability. The design idea and characterization analysis of this article can provide reference and reference value for further research of graphite acetylene in the field of photocatalysis.