Patent ID: 8057772

Claim:
A method of preparing mesoporous silica particles, comprising: ( 1 ) mixing a silica precursor, an alkylamine-based surfactant, and a phosphoric acid-based cosurfactant, thus preparing a mixture solution (a mother liquor); ( 2 ) adding or not adding the mixture solution with an acid solution, and conducting stirring, thus obtaining mesoporous silica particles; and ( 3 ) subjecting the mesoporous silica particles obtained after conducting stirring to a hydrothermal reaction at a range of 100Â° C. to 250Â° C. for a range of 1 to 24 hours in presence of the mother liquor thus increasing a pore size of the mesoporous silica particles; and ( 4 ) thermally treating the mesoporous silica particles at 300Ëœ900Â° C. for 1Ëœ24 hours, wherein the mesoporous silica particles have a particle size of in a range of 1 to 1000 micrometers, and wherein the mesoporous silica particles have a pore size in a range of 22.7 to 45.5 nanometers.