▎ 摘　　要

NOVELTY - Preparing copper based three-dimensional graphene material comprises (i) preparing graphene oxide raw liquid; (ii) adding copper salt into graphene oxide stock solution; (iii) subjecting mixed solution to sonication; (iv) heating mixture at constant temperature; and (v) dehydrating. USE - The copper based three-dimensional graphene material is useful for treating waste water of dimethyl hydrazine (claimed). ADVANTAGE - The material has huge specific surface area, large adsorption capacity, synergistic effect, and light conditions of catalytic decomposition of dimethyl hydrazine, which can achieve the elimination of pollution. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for treating waste water of dimethyl hydrazine, comprising adding copper-based three-dimensional graphene material into solution of dimethylsulfide, stirring in dark environment for period of time and irradiating under ultraviolet lamp or sunshine.