▎ 摘　　要

NOVELTY - Preparing nanoparticle-graphene complex, comprises (a) preparing graphene oxide dispersion, (b) preparing nanoparticle dispersion, (c) mixing the graphene oxide dispersion and the nanoparticle dispersion, (d) stirring the mixed dispersion, and (e) obtaining a nanoparticle-graphene complex. The graphene oxide is a positive charge on the edge. The nanoparticles have negative charge. USE - The method is useful for preparing nanoparticle-graphene complex. ADVANTAGE - The method is economical. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for nanoparticle-graphene complex produced by the above method.