▎ 摘　　要

NOVELTY - Preparation of composite cadmium sulfide quantum dots involves mixing reduced graphene oxide with carboxyl-substituted polyaniline and a cadmium source, adding dilute hydrochloric acid, ultrasonically dispersing, obtaining a homogeneous solution (A), dissolving ammonium persulfate in dilute hydrochloric acid, dispersing, obtaining a homogeneous solution (B), adding resultant to solution (A), reacting, obtaining cadmium composite material precursor, dispersing resultant product in water, adding aqueous sulfur source, and reacting. USE - Preparation of composite cadmium sulfide quantum dots used as optoelectronic material. ADVANTAGE - The method enables preparation of composite cadmium sulfide quantum dots having improved anticorrosive property and photoelectric conversion efficiency. DETAILED DESCRIPTION - Preparation of composite cadmium sulfide quantum dots involves preparing graphene by Hummers method using graphite powder as a raw material, ultrasonically dispersing resultant product, obtaining a homogeneous solution, adding 0.96 ml concentrated ammonia and 1.6 g aniline, reacting, obtaining functionalized reduced graphene oxide, mixing 0.0756 g reduced graphene oxide with carboxyl-substituted polyaniline and a cadmium source, adding dilute hydrochloric acid, ultrasonically dispersing, obtaining a homogeneous solution (A), dissolving 1.427 g ammonium persulfate in dilute hydrochloric acid, ultrasonically dispersing, obtaining a homogeneous solution (B), dripping solution (B) into solution (A), reacting at room temperature, obtaining cadmium composite material precursor, dispersing 0.1 g resultant product in water, obtaining solution (C), dissolving a sulfur source in water, obtaining a solution (D), mixing solution (D) and solution (C), and reacting.