▎ 摘　　要

NOVELTY - Ferroferric oxide magnetic particles uniformly coated with graphene is carboxylated reduced graphene oxide, its flake size is 0.5-3 mu m, the thickness of a single plate is 0.55-3.74 nm, and the number of plate layers is less than 10 layers. The ferroferric oxide magnetic particles are coated on the surface are in the form of particles, with a particle size range of 5-12nm. The coating is uniform and dense without impurities, and the coating rate is over 95%. USE - Ferroferric oxide magnetic particles uniformly coated with graphene. ADVANTAGE - The ferroferric oxide magnetic particles uniformly coated with graphene has subsequent design, and helps to prepare more excellent performance absorbing materials. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for uniformly coating graphene with nano ferromagnetic particles, which involves: (A) adding graphene and the alcohol solution of graphene in ratio of 1:100-500, and stirring to obtain a dispersed solution of graphene; (B) adding the iron salt and the graphene dispersion solution in a mass ratio of 1:1-5:1, and performing the pulverization and ultrasound to obtain a mixed solution containing iron salt and graphene; (C) dispersing the alkali solution into the alcohol solution in volume ratio of 1-4:10, and stirring uniformly to obtain the alkali alcohol solution; (D) adding the alkali alcohol solution to the mixed solution containing iron salt and graphene, performing ultrasonic cell crushing, and transferring resulting solution to a reaction kettle and reacting at 180-240 degrees C for 2-4 hours; and (E) filtering under the action of a magnet, washing to neutrality under the action of centrifugation, and vacuum drying to obtain graphene powder coated with nanometer ferromagnetic particles.