SiO2 Functionalized Fe3O4 Nanoparticles（SiO2@Fe3O4）

Fe3O4 with controllable particle size was synthesized by hydrothermal method. SiO2 was modified on the surface to form a typical core-shell structure. The material has narrow size distribution, uniform particle size, high stability and easy surface modification. Monodisperse Fe3o4 coated with uniform SiO2 can keep its narrow size and make it have the surface effect and size effect that iron ion itself has. At the same time, the outer silicon dioxide can be further modified to improve the performance of Fe3O4@SiO2 and expand its application field.

It can be used in nano-probe construction, magnetic resonance imaging and molecular imaging, magnetic hyperthermia, drug carrier and targeted diagnosis and treatment