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Ordered Mesoporous Silica Films Synthesized from Vapor Phase

Published online by Cambridge University Press:  10 February 2011

Shunsuke Tanaka ,
Norikazu Nishiyama ,
Yasuyuki Egashira ,
Yoshiaki Oku  and
Korekazu Ueyama
Shunsuke Tanaka
Affiliation:
Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
Norikazu Nishiyama
Affiliation:
Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
Yasuyuki Egashira
Affiliation:
Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
Yoshiaki Oku
Affiliation:
Mirai project, Association of Super-Advanced Electronics Technology, AIST Tsukuba West 7, 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
Korekazu Ueyama
Affiliation:
Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
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Abstract

A novel synthesis route for mesostructured silica films is reported. Nano-phase transition from lamellar phase of surfactant to hexagonal phase of silica-surfactant nanocomposite was found under vapor infiltration. Vapor infiltration was performed using HCl as catalyst source and tetraethoxysilane (TEOS) as framework source. Highly ordered mesostructured silica films are obtained using alkyltrimethylammonium bromide CnTAB (the carbon number in the alkyl chain; n = 8, 10, 12, 14, 16, 18) as templating agent. The d values of the mesostructured silica films increase with increasing the length of the alkyl chain and are controllable by the synthetic temperature. The vapor infiltration synthesis is a simpler process compared to conventional sol-gel techniques and attractive for mass production of a variety of organic-inorganic composite materials and inorganic porous materials. This novel synthetic method provides opportunities for the creation of new materials technologies.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 775: Symposium P – Self-Assembled Nanostructured Materials , 2003 , P3.12
Copyright
Copyright © Materials Research Society 2003

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