Department of Chemistry
Preparation of magnetic Fe3O4/SiO2/Bi2WO6 microspheres and their application in photocatalysis
Magnetic Fe3O4/SiO2/Bi2WO 6 microspheres with photocatalytic properties have been synthesized using a silica layer for "bonding" (adhering Bi2WO 6 to Fe3O4). The morphology, composition and magnetic properties of the Fe3O4/SiO2/Bi 2WO6 composites were characterized by X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, vibrating sample magnetometry, and BET surface area analysis. The activity of the material in photocatalytic decoloration of aqueous rhodamine B (RhB) solution under visible light was evaluated. The results showed that Bi 2WO6 combined well with the magnetic Fe3O 4/SiO2 nanoparticles. The Fe3O 4/SiO2/Bi2WO6 composites were spherical in shape, having a mean size of 2 μm. The spent catalyst could be recycled with only slight decline in catalytic activity. It is envisaged that the stability, reusability, and magnetic nature of the Fe3O 4/SiO2/Bi2WO6 catalyst warrants its application in photocatalysis.
A. Magnetic materials, B. Chemical synthesis, C. Electron diffraction, C. X-ray diffraction, D. Catalytic properties
Source Publication Title
Materials Research Bulletin
Chen, Su-Hua, Zhen Yin, Sheng-Lian Luo, Chak-Tong Au, and Xue-Jun Li. "Preparation of magnetic Fe3O4/SiO2/Bi2WO6 microspheres and their application in photocatalysis." Materials Research Bulletin 48.2 (2013): 725-729.