Abstract：In this work, monodisperse hollow Fe3O4 magnetic microspheres were synthesized by hydrothermal method. And the P(GMA-DVB) polymer layer was coated on the surface of Fe3O4 microspheres by distillation precipitation polymerization method to form core-shell structure. After adsorption of Au nanoparticles, a magnetic core-shell Fe3O4/P(GMA-DVB)-SH-Au supported catalyst was obtained. The morphologies, structures and catalytic performance of the catalysts were characterized by TEM, SEM, FTIR, XRD, TGA, VSM and UV-vis. Results show that the synthesized materials have uniform particle size, regular microsphere, and obvious core-shell struc-ture. For the catalytic reduction of 4-nitrophenol, the Fe3O4/P(GMA-DVB)-SH-Au exhibits excellent catalytic performance, and the catalytic efficiency still maintains over 80% after 8 successive cycles.
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