▎ 摘　　要

NOVELTY - Preparation of nano composite material with iodine and sulfur particles anchored in nitrogen-doped graphene axial plane involves converting nitrogen source and carbon source into nitrogen-doped graphene material in a calcining mode, using trimethyl iodosulfonic acid as a sulfur source and iodine source, mixing the trimethyl iodosulfonic acid with the nitrogen-doped graphene material in a mass ratio of 0.01-0.1:1 which are tightly combined by using chemical bonds, calcining for 4 hours at high temperature of 800-1100℃ and cooling. The nitrogen-doped graphene material is prepared by mixing nitrogen source and carbon source in a mass ratio of 1-10:10, dissolving in deionized water, stirring to form a uniform solution, heating at 75°C to remove water to obtain brown yellow powder, calcining at 800°C in muffle furnace under nitrogen protection for 2 hours at 2°C for 2 minute -1and grinding. USE - Preparation of nano composite material with iodine and sulfur particles anchored in nitrogen-doped graphene axial plane used in photoelectrocatalysis (claimed). ADVANTAGE - The method can anchor the elemental iodine and sulfur particles in the graphene lamellar structure, so the band gap between the conduction band and the valence band of the graphene material is more opened, the doping of iodine, sulfur atoms and nitrogen atoms can form a higher Schottky barrier, and the obtained composite material has the property of a semiconductor which is conducive to the rapid transfer of electrons between interfaces.