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SiO 2 coated Fe 3 O 4 /palygorskite magnetic nanocomposites (MNCs) were successfully synthesized via coprecipitation route. The samples were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR), transmission electron microscopy (TEM) and magnetic properties. The results indicated that SiO 2 was coated on the surface of Fe 3 O 4 /palygorskite through the hydrolysis of tetraethyl orthosilicate (TEOS) and the orientation changing of MNCs could be realized by external magnetic field. The interfaces of the composite were further elucidated at atomic level. We believe that the as-prepared SiO 2 coated Fe 3 O 4 /palygorskite MNCs could show potential application in the fields of functional nanomaterials.
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He et al. (2015) studied this question.
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