▎ 摘　　要

NOVELTY - Reduced graphene oxide loaded nano-iron(II,III) oxide/manganese(II,III) oxide composite material comprises reduced graphene and iron(II,III) oxide/manganese(II,III) oxide in a mass ratio of 1:20-1:1, where the mass ratio of iron(II,III) oxide and manganese(II,III) oxide is 1:3-3:1. USE - The composite material is useful as non-homogeneous Fenton catalyst in biodegradation of wastewater (claimed). DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing reduced graphene oxide loaded nano-iron(II,III) oxide/manganese(II,III) oxide composite material comprising carrying out forced hydrolysis of polyol to obtain nano manganese(II,III) oxide particles, then carrying out Massart hydrolysis method and co-precipitation method using graphene oxide as carrier to obtain graphene oxide loaded nano nano-iron(II,III) oxide/manganese(II,III) oxide composite material, and then reducing using hydrazine hydrate to obtain final product; and (2) use of reduced graphene oxide loaded nano-iron(II,III) oxide/manganese(II,III) oxide composite material as non-homogeneous Fenton catalyst comprising carrying out biodegradation of wastewater in presence of hydrogen peroxide top remove toxic and harmful pollutants e.g. organic matter, then carrying out rapidly sedimentation by its magnetism using reduced graphene oxide loaded nano-iron(II,III) oxide/manganese(II,III) oxide composite material, where the reduced graphene oxide loaded nano-iron(II,III) oxide/manganese(II,III) oxide composite material can be reused more than 5 times after recovery.