MESOPOROUS SILICA NANO PARTICLE WHICH CONTAINS INORGANIC NANOPARTICLES AND PREPARATION PROCESS FOR THE SAME

摘要

A preparation process of mesoporous silica nanoparticles with a diameter of about 150 nm comprising uniform-sized pores containing uniform magnetic nanoparticles, semiconductor nanoparticles, or a mixture thereof, and mesoporous silica nanoparticles having excellent performance by reducing the size and surface area of the particles and increasing the internal volume of the pores compared with mesoporous silica nanoparticles prepared by conventional processes are provided. Mesoporous silica nanoparticles containing inorganic nanoparticles comprise: a silica outer layer; inorganic nanoparticles contained in the silica outer layer; and pores with a diameter of 2 to 10 nm passing through the silica outer layer. The silica nanoparticles have a diameter of 50 to 250 nm. The pores have a diameter of 2 to 5 nm. A preparation process of mesoporous silica nanoparticles containing inorganic nanoparticles comprises the steps of: (i) dispersing hydrophobic inorganic nanoparticles dispersed into an organic solvent into an aqueous solution into which a surfactant is dissolved to prepare an aqueous dispersion of inorganic nanoparticles surrounded by the surfactant; and (ii) injecting a silica precursor into the prepared aqueous dispersion to form an outer layer made from mesoporous silica on the inorganic nanoparticles.