▎ 摘　　要

NOVELTY - Preparing three-dimensional magnetic reduced graphene involves adding certain size of graphite oxide into dispersion liquid, stirring, mixing, adding reducing agent, mixing uniformly to obtain first mixing system, adding iron ion source to obtained first mixed system, dispersing ultrasonically, adding sodium acetate, stirring to dissolve it completely to obtain the second mixed system, transferring the obtained mixed system to the reactor for hydrothermal reaction after the reaction is completed, collecting the black product with a magnetic substance, washing with deionized water and absolute ethanol, and drying to obtain the three-dimensional magnetic reduced graphene. USE - Method for preparing three-dimensional magnetic reduced graphene. ADVANTAGE - The method enables to prepare three-dimensional magnetic reduced graphene with dense fold and nano-size fold, and has excellent electromagnetic wave absorption capacity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a three-dimensional magnetic reduction graphene prepared by preparation method.