▎ 摘　　要

NOVELTY - Composite material comprises reduced graphene oxide/amorphous carbon substrate and copper/cuprous oxide photocatalyst at particle size of 20-800 nm having hierarchical structure. USE - Composite material used for degradation of organic pollutants in wastewater (claimed). ADVANTAGE - The product has good hydrophilicity and improved photocatalytic performance and increases adsorption of organic pollutants in wastewater. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) preparation of composite material comprising dissolving 10-90 mg/mL glucose or natural polysaccharide in 0.3-1.5 mg/mL aqueous graphene oxide solution, stirring at room temperature to 100 degrees C for 2 hours, cooling to room temperature, putting into high pressure kettle, performing hydrothermal reaction at 160-180 degrees C for 6-24 hours, and cooling to room temperature to obtain reduced graphene oxide/amorphous carbon substrate dispersion liquid; and adding soluble copper salt into high pressure kettle, adding reduced graphene oxide/amorphous carbon substrate dispersion liquid, dissolving, adding 0.001-0.02 g copper source, stirring, performing hydrothermal reaction at 110-180 degrees C for 6-24 hours, cooling to room temperature, centrifuging, washing, drying, and post-processing; and (2) degradation of organic pollutants in wastewater comprising adding 1-5 mg composite material into 5-20 mg/L wastewater containing organic pollutant, stirring for 20-40 minutes, absorbing, and degrading.