Preparation and Characterization of C@Fe3O4 Supported Pd Magnetic Nanoparticles for Degradation of Dye Wastewater

Abstract

The core-shell structure Fe₃O₄@C magnetic nanoparticles were synthesized with superparamagnetic Fe₃O₄ nanosphere as a magnetic core, and soluble starch resin as a carbon source via a solvothermal method. Silica-iron oxide and Fe₃O₄@C carriers with a core-shell structure were prepared by carbonization of organic material on the surface of Fe₃O₄ nanoparticles, Fe₃O₄@C supported Pd were processed into magnetic nano-catalysts with core-shell structure, and their catalytic properties were investigated. The resulting environmentally friendly magnetic material can be used to degrade dye wastewater. The structure of magnetic nanoparticles was characterized using TEM, XRD and VSM. The effects of preparation conditions in the structure of the Fe₃O₄@C magnetic nanoparticles were taken out. The results indicate that from XRD, the magnetic nano particles Fe₃O₄@C synthesized of carbon sources have amorphous carbon diffraction peak except for all the characteristic peaks of Fe₃O₄. The saturation magnetization Fe₃O₄, Fe₃O₄@SiO₂ and Fe₃O₄@C – 59.14 emu/g, 49.12 emu/g and 27.95 emu/g, respectively.