Amino functionalization of meso silica Magnetism Core-Shell - Preparation and Characterization

In the present work, magnetic nanoparticles Fe3O4 have been successfully encapsulated with double-shell structure by two-step coating processes of silica on magnetic core with a sol gel method. Afterward, these composites were modified by amino group, in order to improve absorption capacity. The dense inner shell can enhance the stability of the magnetic core, and the porous outer shell can provide an excellent absorbing structure. These nano structure can be removed from aqueous solution via magnetic separation system and regenerated by acid treatment. The structure of the resulting product was characterized by Fourier transform infrared (FT-IR) spectra and X-ray diffraction (XRD) spectrometry

Keywords:

: Magnetic Fe3O4 composite nanoparticles , Core shell structure , amino functionalized , mesoporous material , sol gel method