▎ 摘　　要

NOVELTY - Preparing goldcopper dopped graphene- carbon nitride composite nanomaterial, comprises (1) mixing and drying melamine, ammonium chloride and deionized water and heating, (ii) placing triethanolamine, chloroauric acid solution, copper chloride solution in deionized water, and stirring (iii) dispersing 0.05-0.1 graphene- carbon nitride nanosheet into mixed solution, transferring to a vacuum reactor, and subjecting to full-spectrum light irradiation, subjecting to full-spectrum light irradiation for 0.5-2 hours under stirring to prepare goldcopper dopped with different goldcopper nanoparticles graphene- carbon nitride heterojunction nanocomposite, mixing solution of graphene- carbon nitride nanosheet with triethanolamine, chloroauric acid solution and copper chloride solution. USE - The method is useful for preparing goldcopper dopped graphene carbon nitride composite nanomaterial. ADVANTAGE - The method is simple and easy to operate, and has actual feasibility.The nano composite material is economical and good photocatalytic decomposition of water. DETAILED DESCRIPTION - Preparing an goldcopper dopped graphene- carbon nitride composite nanomaterial, comprises (1) mixing and drying melamine, ammonium chloride and deionized water, heating at rate of 1-4 degrees C/minutes, heating at 500-600 degrees C for 1-6 hours, cooling, ball milling yellow powder in a ball mill for 0.5-3 hours to obtain graphene- carbon nitride nanosheets, where melamine and ammonium chloride and water ratio 1:2:1; (ii) placing triethanolamine, chloroauric acid solution, copper chloride solution in deionized water, and stirring at room temperature and pressure for 0.5-2 hours, where chlorine a mixed solution is mixture gold acid solution and a copper chloride solution; the volume ratio of the triethanolamine, chloroauric acid, copper chloride, and water is 10:0.5-3:0.5-3:90, (iii) dispersing 0.05-0.1 graphene- carbon nitride nanosheet into mixed solution, transferring to a vacuum reactor, and subjecting to full-spectrum light irradiation for 0.5-2 hours under stirring to prepare goldcopper dopped with different goldcopper nanoparticles graphene- carbon nitride heterojunction nanocomposite, mixing solution of graphene- carbon nitride nanosheet with triethanolamine, chloroauric acid solution and copper chloride solution and volume is 100ml