▎ 摘　　要

NOVELTY - Preparation of graphene oxide-modified magnetic nanomaterials involves preparing mixed solution of graphene oxide and metal salt, adding mixed solution and alkali solution to supergravity reactor and then reacting, uniformly mixing, completing reaction, magnetically separating the reaction product, washing with deionized water and anhydrous ethanol and freeze-drying. USE - The method is useful for preparation of graphene oxide-modified magnetic nanomaterials, which are useful in environmental, biomedicine and chemical industries. ADVANTAGE - The method enables preparation of graphene oxide-modified magnetic nanomaterials with high yield and small particle size. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for device for preparation of graphene oxide-modified magnetic nanomaterials.