▎ 摘　　要

NOVELTY - Preparing three-dimensional graphene-noble metal nano catalyst comprises (i) ultrasonically dispersing oxidized graphene in water, preparing certain concentration of graphene oxide dispersion, then adding noble metal compound and crosslinking agent into hydrothermal reactor, reacting for 12 hours, and drying resulting hydrogel to obtain dry gel, and (ii) heating drygel obtained in step (i) under argon, and calcining at certain temperature to obtain final product. USE - The method is useful for preparing three-dimensional graphene-noble metal nano catalyst (claimed). ADVANTAGE - The catalyst has stable composite material structure.