▎ 摘　　要

NOVELTY - Preparing iron (II, III) oxide/carbon/ manganese dioxide/reduced graphene oxide material comprises (a) synthesizing hierarchically porous iron (II, III) oxide/carbon/ manganese dioxide by a two-step hydrothermal method using ferric oxide, glucose and potassium permanganate as precursors and (b) mixing the obtained hierarchically porous iron (II, III) oxide/carbon/ manganese dioxide with graphene oxide aqueous solution, stirring, reacting to synthesize iron (II, III) oxide/carbon/ manganese dioxide / graphene oxide, adding reducing agent and reacting to obtain iron (II, III) oxide/carbon/ manganese dioxide/reduced graphene oxide material. USE - The material is useful in municipal sludge treatment (claimed). ADVANTAGE - The method provides iron (II, III) oxide/carbon/ manganese dioxide/reduced graphene oxide material with magnetic recyclability, dual electron transport channels, high catalytic performance and stable structure through in-situ coating of graphene oxide and low-temperature reduction and can target the lipophilic antibiotics that are difficult to remove in sludge and achieves efficient removal of heavy metals in sludge through surface adsorption and reduction and realizes the efficient targeted removal of toxic and harmful substances in municipal sludge by forming a Fenton-like system with hydrogen peroxide. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a iron (II, III) oxide/carbon/ manganese dioxide/reduced graphene oxide material, which is prepared by the above method.