▎ 摘　　要

NOVELTY - Cuprous sulfide quantum dot-loaded reduced graphene oxide nanoparticles comprises a base body and cuprous sulfide quantum dots loaded on the base body by electrostatic force and the base body is reduced graphene oxide modified based on a silane coupling agent. USE - Used as cuprous sulfide quantum dot-loaded reduced graphene oxide nanoparticles. ADVANTAGE - The nanoparticle has good dispersibility and promotes curing effect and quality of the coating under low-temperature environment as filler. The method enables that the nanoparticles are modified with a silane coupling agent to increase the interlayer spacing of the graphene oxide and improves dispersion characteristics and combines semiconductor material e.g. cuprous sulfide quantum dots with graphene to separate electrons and holes in quantum dots; improve electron mobility and improves the photo-thermal performance of the coating. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: preparing cuprous sulfide quantum dot-loaded reduced graphene oxide nanoparticle comprising dispersing the graphene oxide modified based on the silane coupling agent in absolute ethanol to obtain a modified graphene oxide dispersion, adding 5 pts. wt. cuprous acetate monohydrate and 3 pts. wt. thiourea in 4 pts. wt. modified graphene oxide dispersions, stirring for 10 minutes, adding 4 pts. wt. polyacrylic acid dispersant and aqueous ammonia, stirring for 10 minutes, transferring the mixed solution to a hydrothermal kettle with a polytetrafluoroethylene liner, carrying out a solvothermal reaction at 160-200℃, filtering, washing and drying to obtain product; and a epoxy composite coating comprising cuprous sulfide quantum dot-loaded reduced graphene oxide nanoparticles as filler.