▎ 摘　　要

NOVELTY - Preparing magnetic composite manganese dioxide-iron(II,III) oxide-reduced graphene oxide comprises (i) dispersing synthesized graphite oxide in water, and obtaining uniform graphite oxide dispersion by ultrasonic peeling, completely dissolving glucose in peeled graphite oxide solution, stirring and adding ammonia water, shaking, stirring, cooling, filtering and washing to obtain product grapheme, (ii) adding graphene to the glycol solution and sonicating, adding iron(III) chloride hexahydrate and sodium acetate to above solution, stirring and transferring to a stainless steel autoclave, reacting at a certain temperature, cooling, washing, and drying, (iii) heating potassium permanganate in a water bath to reacting, adding iron(II,III) oxide-reduced graphene oxide to the above solution, and adjusting pH of the solution with dilute hydrochloric acid, filtering suspension, washing many times with deionized water and absolute ethanol, and drying. USE - The method is useful for preparing magnetic composite manganese dioxide-iron(II,III) oxide-reduced graphene oxide. ADVANTAGE - The method: has strong regeneration performance.