▎ 摘　　要

NOVELTY - Composite material based on titanium dioxide/cobalt tetraoxide/graphene oxide, prepared by (i) mixing the cobalt salt aqueous solution with the titanium salt alcohol solution, stirring, sonicating, centrifuging, drying, and calcining to obtain cobalt-titanium composite, adding the cobalt-titanium complex and the amine compound to the graphene oxide alcohol solution, heating the reaction to obtain titanium dioxide/cobalt sesquioxide /graphene oxide composite, and (ii) mixing the stainless steel mesh with the titanate, glycerol and alcohol solution, heating to obtain modified stainless steel mesh, compounding the titanium dioxide/cobalt tetraoxide/graphene oxide composite on the modified stainless steel mesh, and obtaining composite material based on titanium dioxide/cobalt tetraoxide/graphene oxide, is claimed. USE - The composite material based on titanium dioxide/cobalt tetraoxide/graphene oxide is useful for treating sewage (claimed). ADVANTAGE - The composite material based on titanium dioxide/cobalt tetraoxide/graphene oxide: realizes the treatment of sewage oil and oil-water emulsion separation; and has solar photocatalytic effect.