Synthesis and Characterization of Fe3O4@SiO2@mesoporous-SiO2 Materials

In this work, a magnetic Fe3O4@SiO2@mesoporous-SiO2 (F@S@m-S) material was successfully prepared by three-step method: firstly, Fe3O4 particles were synthesized through hydro-thermal synthesis process; secondly, Fe3O4@SiO2 materials fabricated via template method using tetraethyl orthosilicate (TEOS) as silicon sources and cetyltrimethylammonium chloride (CTAC) templates; lastly, F@S@m-S well. The influence of TEOS/CTAC molar ratio on the morphology mesostructure investigated. product characterized Fourier-transform Infrared Spectroscopy (FT-IR), small-angle X-ray scattering (SAXS), scanning electron microscopy (SEM), transmission microscope (TEM), N2 adsorption-desorption. results demonstrated that have well spherical typical mesostructure. increase can improve crystal form materials. average particle size, specific surface area, pore size volume F@[email protected] are 130 nm, 77.1 m2/g, 9.2 nm 0.1668 cm2/g, respectively.