Synthesis of magnetically separable Sn doped magnetite/silica core-shell structure and photocatalytic property
- School of Materials Science and Engineering, Shandong University of Technology, 12 Zhang Zhou Road, Zibo, Shandong 255049 (China)
Sn doped Fe{sub 3}O{sub 4}/SiO{sub 2} core-shell structures with the magnetic and photocatalytic properties have been successfully synthesized using Fe{sub 3}O{sub 4} microspheres as the precursor. The morphology, phase and structure of the bifunctional products were investigated by X-ray powder diffraction, transmission electron microscopy, selected-area electron diffraction, high-resolution transmission electron microscopy, energy dispersive spectroscopy, and scanning electron microscopy. The effects of the amount and hydrolysis rate of tetraethyl orthosilicate on the preparation of the Fe{sub 3}O{sub 4}/SiO{sub 2} core-shell structures were investigated. Low concentration and slow hydrolysis rate of tetraethyl orthosilicate were useful to obtain the uniform silica coated Fe{sub 3}O{sub 4}. The magnetic measurements indicated that the Sn doped Fe{sub 3}O{sub 4}/SiO{sub 2} core-shell structures showed ferromagnetic property and the magnetic saturation value slightly decreased after coated the silica layer. The magnetic Sn doped Fe{sub 3}O{sub 4}/SiO{sub 2} core-shell structures exhibited good photocatalytic activity in the degradation of methyl orange and could be separated by applying an appropriate magnetic field.
- OSTI ID:
- 22207316
- Journal Information:
- Materials Research Bulletin, Vol. 45, Issue 6; Other Information: Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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