▎ 摘　　要

NOVELTY - Iron(II, III) oxide-reduced graphene oxide (Fe3O4-rGO-MIL-100(Fe)) photo-Fenton catalyst is claimed. The catalyst has core-shell structure, where core is nano-spherical triiron tetroxide, and shell layer includes partially reduced graphene oxide inner layer and MIL-100 (Fe) outer layer. USE - The catalyst is useful in Fenton reagent for oxidative degradation of chlorophenol wastewater under visible light catalysis (claimed). ADVANTAGE - The catalyst has excellent degradation effect and low cost; reduces the dosage of H2O2 agent; improves Fenton reaction p-chloro-phenol waste water degradation efficiency; is environmentally friendly, and suitable for industrial production. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing (Fe3O4-rGO-MIL-100(Fe)) photo-Fenton catalyst comprising (i) carrying out solvothermal reaction of mixed solution of ferric chloride, ethylene glycol, sodium acetate and polyethylene glycol to obtain nanospherical iron(II, III) oxide, (ii) reacting nano-spherical iron(II, III) oxide with 3-aminopropyltriethoxysilane to obtain 3-aminopropyltriethoxysilane-modified nanospherical iron(II, III) oxide, (iii) dispersing 3-aminopropyltriethoxysilane-modified nanospherical iron(II, III) oxide in water, adding graphene oxide dispersion, stirring and reacting to obtain Fe3O4-GO, (iv) dispersing Fe3O4-GO in solution of ferric chloride solution and trimesic acid solution, and cyclically reacting for many times to obtain Fe3O4-GO-MIL-100(Fe), and (v) vacuum drying and reducing Fe3O4-GO-MIL-100 (Fe) to obtain Fe3O4-rGO-MIL-100(Fe); and (2) use of photo-Fenton catalyst in Fenton reagent for oxidative degradation of chlorophenol wastewater under visible light catalysis, where pH of chlorophenol wastewater is 5-9, concentration of chlorophenol in chlorophenol wastewater is 50-250 mg/l, and concentration of hydrogen peroxide is 1-4 mmol/l.