Patent ID: 8304028
Filing Date: 2012-11-06
Classification: C01B,H01L,Y10T

Abstract:
1. A process for producing a mesoporous silica film structure comprising mesopores oriented in the direction substantially perpendicular to a surface of a substrate, said process comprising the steps of: (I) preparing an aqueous solution having a pH of 9 to 12 and containing a cationic surfactant (a) at a concentration five times or less a critical micelle concentration thereof; (II) immersing the substrate in the aqueous solution obtained in the step (I) and then adding a silica source (b) capable of forming a silanol compound when hydrolyzed, to the aqueous solution in such an amount that a concentration of the silica source in the aqueous solution is from 0.1 to 100 mmol/L, followed by stirring the resulting mixture at a temperature of from 10 to 100° C., to form a mesoporous silica film structure having a mesoporous silica film on the surface of the substrate; and (III) removing the cationic surfactant (a) from the resulting mesoporous silica film structure.