Journal
MATERIALS RESEARCH BULLETIN
Volume 48, Issue 2, Pages 725-729Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2012.11.017
Keywords
Magnetic materials; Chemical synthesis; X-ray diffraction; Electron diffraction; Catalytic properties
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Funding
- National Outstanding Youth Foundations of China [50725825]
- Innovation Foundation for Graduates of Jiangxi Province [YC10A113]
- Science and Technology Research Foundation of the Provincial Education Department of Jiangxi [GJJ08201]
- NCHKU
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Magnetic Fe3O4/SiO2/Bi2WO6 microspheres with photocatalytic properties have been synthesized using a silica layer for bonding (adhering Bi2WO6 to Fe3O4). The morphology, composition and magnetic properties of the Fe3O4/SiO2/Bi2WO6 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 Bi2WO6 combined well with the magnetic Fe3O4/SiO2 nanoparticles. The Fe3O4/SiO2/Bi2WO6 composites were spherical in shape, having a mean size of 2 pm. 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 Fe3O4/SiO2/Bi2WO6 catalyst warrants its application in photocatalysis. (C) 2012 Published by Elsevier Ltd.
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