▎ 摘　　要

NOVELTY - Graphene composite catalyst preparation involves preparing monolayer of graphene oxide, and forming magnetic material on the monolayer of the graphene oxide to obtain graphene oxide magnetic material. The noble metal particles are provided on the graphene oxide magnetic material to form graphene composite catalyst. USE - Method for preparing graphene composite catalyst (claimed). ADVANTAGE - The method prepares the graphene composite catalyst in a simple and cost-effective manner with high catalyze efficiency.