Multilayer synthesis of magnetite-based nanocomposites

Superparamagnetic iron oxide nanoparticles (SPIO NPs) were prepared via co-precipitation. The silica coated nanoparticles were then modified with a thin layer of silane. The nanoparticles modified with amino terminal functional group were then slowly added into the gold seed solution under stirring. The nanoparticle suspension was then added to a gold growth solution. Formaldehyde was then slowly dropped into the mixture. When the color of the suspension changed, the reaction was completed within 3 min. The excess gold NPs with pale-purple color were then removed. The remaining magnetic gold nanoshell nanocomposites were re-suspended in Milli-Q water.

کلیدواژه ها:

Magnetite Nanoparticles ، Core–shell Nanocomposites ، colloidal solution ، Biomedical Applications