▎ 摘　　要

NOVELTY - Preparation of magnetic graphene oxide comprises preparing graphene oxide by Hummers' method, ultrasonically peeling to obtain graphene oxide dispersion liquid, performing chemical co-precipitation to prepare magnetic ferroferric oxide nanoparticle, dispersing into deionized water, ultrasonically processing to obtain black suspension, adjusting pH to 3-4, heating in water bath under nitrogen atmosphere, adding graphene oxide dispersion liquid, and self-assembling. USE - Method for preparing magnetic graphene oxide (claimed). ADVANTAGE - The method has simple and fast preparation process. The magnetic graphene oxide has large specific surface area, strong absorbing ability, and good stability and recovery rate.