▎ 摘　　要

NOVELTY - Preparing graphene-supported gold cluster nano composite material by in-situ reduction of sodium borohydride comprises pre-treating graphene comprises taking 1-ethyl-(3-dimethylaminopropyl) carbodiimide and N-hydroxysuccinimide to activate the carboxy groups on the graphene and preparing graphene-supported gold cluster comprises using N-isobutyryl-L-cysteine and tris(2-carboxyethyl)phosphine to carry out reduction reaction to chloroauric acid, fully reacting, adding graphene after activated carboxy group to continue the reaction, adding sodium borohydride to carry out the reduction reaction after fully reacting and purifying to obtain the graphene- supported gold cluster nano composite material. USE - The composite material is useful in the catalytic degradation of azo dyes (claimed). ADVANTAGE - The method utilizes sodium borohydride in-situ reduction method to prepare a uniform graphene-loaded gold cluster nano-composite material with a small particle size distribution. The nano-composite material has high efficiency for catalytic degradation of azo dyes and ensures that the repeated catalysis will not reduce the catalytic degradation ability of the material and has cycle stability.