Production method for core-shell porous silica particles
AssigneesTohoku University, Daicel Corporation
InventorsDaisuke Nagao, Haruyuki Ishii, Shunho Ishikawa
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Abstract
Provided is a production method for core-shell porous silica particles, the production method including: a preparation step of preparing an aqueous solution comprising non-porous silica particles, a cationic surfactant, a basic catalyst, an electrolyte, and an alcohol; a shell precursor formation step at adding a silica source to the aqueous solution to form a shell precursor on a surface of the non-porous silica particles; and a shell formation step of removing the cationic surfactant from the shell precursor to form a porous shell.
Claims14
A method for producing core-shell porous silica particles, the method comprising:
- a preparation step of preparing a dispersion comprising an aqueous solution comprising a cationic surfactant, a basic catalyst, an electrolyte, an alcohol, and non-porous silica particles dispersed in the aqueous solution;
- a shell precursor formation step of adding a silica source to the dispersion to form a shell precursor on a surface of the non-porous silica particles;
- and
- a shell formation step of removing the cationic surfactant from the shell precursor to form a porous shell.
Dependencies are inferred from the claim text.