▎ 摘　　要

NOVELTY - Graphene oxide and water are added to a container and ultrasonically treated to obtain a graphene oxide suspension in water. A cerium salt, sodium acetate, and urea are added to the container and dissolved in water. The container is placed in a reactor equipped with a refluxing device and the contents are reacted to obtain a black precipitate of cerium oxide/graphene oxide nanocomposite. USE - Preparation of cerium oxide/graphene oxide nanocomposite. ADVANTAGE - The method enables simple, quick and energy-saving preparation of cerium oxide/graphene oxide nanocomposite, with low equipment requirement and uniform dispersion of metal nanoparticles on the surface of graphene.