▎ 摘　　要

NOVELTY - Preparing method of reduced graphene oxide (rGO)/iron (II,III) oxide-ruthenium-titanium dioxide magnetic photocatalyst comprises (1) adding ruthenium (III) chloride trihydrate ethanol solution to tetrabutyl titanate solution, (2) mixing iron (II,III) oxide magnetic nanospheres, sodium dodecyl sulfonate, acetone and aqueous ammonia, (3) stirring solution B, continuously stirring after solution A has been added dropwise, and magnetically separating and washing black solid in mixed solution, and drying it under vacuum, (4) calcining product C to prepare ruthenium-doped titanium dioxide magnetic iron (II,III) oxide-ruthenium-titanium dioxide composite material, (5) ultrasonically sonicating magnetic iron (II,III) oxide-ruthenium-titanium dioxide composite material in dilute nitric acid solution, and separating solids, and (6) loading and compositing composite material treated and few-layer flake graphene oxide by solvothermal method in mixed solvent of ethanol/ethylene glycol. USE - The magnetic photocatalyst is useful in degradation of methylene blue (claimed). ADVANTAGE - The method: is simple and feasible; and has easy to control preparation conditions. The magnetic photocatalyst has excellent visible light photocatalytic degradation activity for methylene blue, and certain application prospects. DETAILED DESCRIPTION - Preparing method of reduced graphene oxide (rGO)/iron (II,III) oxide-ruthenium-titanium dioxide magnetic photocatalyst comprises (1) adding ruthenium (III) chloride trihydrate ethanol solution to the tetrabutyl titanate solution, and marking it as solution A, (2) mixing iron (II,III) oxide magnetic nanospheres, sodium dodecyl sulfonate, acetone and aqueous ammonia, ultrasonically dispersing for 10 minutes to ensure that all sodium dodecyl sulfonate can be dissolved in the solution, and marking as solution B, (3) stirring the solution B prepared in the step (2), dropping the solution A prepared in the step (1) into the solution B at room temperature, continuously stirring after the solution A has been added dropwise, and magnetically separating and washing the black solid in the mixed solution, and drying it under vacuum to obtain product C, (4) calcining the product C obtained in the step (3) to prepare ruthenium-doped titanium dioxide magnetic iron (II,III) oxide-ruthenium-titanium dioxide composite material, (5) ultrasonically sonicating the magnetic iron (II,III) oxide-ruthenium-titanium dioxide composite material prepared in the step (4) in dilute nitric acid solution for 5 minutes, washing the composite material to neutrality with deionized water, washing with ethanol, and separating solids, and (6) loading and compositing the composite material treated in the step (5) and the few-layer flake graphene oxide by solvothermal method in mixed solvent of ethanol/ethylene glycol, and preparing the rGO/iron (II,III) oxide-ruthenium-titanium dioxide magnetic photocatalyst. An INDEPENDENT CLAIM is also included for rGO/iron (II,III) oxide-ruthenium-titanium dioxide magnetic photocatalyst prepared by the preparation method.