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Semiconductor photocatalysis can be used to decompose various organic compounds in open air under aqueous conditions with solar energy.Bismuth tungstate (Bi2WO6), one of the simplest Aurivillius phase oxides,has been used as a new photocatalyst that works under visible light irradiation.However, it is not easy to reuse the photocatalyst due to difficulty in its recovery from the reaction media.Indeed, reusability and recyclability of photocatalyst are major factors considered in industrial applications.In the paper, magnetically recoverable photocatalyst Fe3O4/SiO2/Bi2WO6 was synthesized by a three-step approach.After a hydrothermal process of preparing ferroferric oxide (Fe3O4), these Fe3O4 nanoparticles were coated with SiO2 by sol-gel method.Finally, Fe3O4/SiO2 nanoparticles were immobilized onto the surface of Bi2WO6 by a second hydrothermal process.The morphology, structure and properties of the composite were characterized by Powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Brunauer-Emmett-Teller surface area analysis, vibrating sample magnetometer and UV-vis absorption spectrum.The results show that the flower-like Bi2WO6 structures with average diameters of 3-4μm are constructed by Bi2WO6 nanosheets, which are further decorated by Fe3O4 nanoparticles with an average diameter of 500nm.The photocatalytic activity of Fe3O4/SiO2/Bi2WO6 to degrade rhodamine B was close to that of pure Bi2WO6.The photocatalyst with appropriate superparamagnetism can be easily re-collected by applying an external magnetic field.It shows potential applications in pollutant degradation.