Phase transformation in mesoporous silica films induced by the degradation of organic moiety

被引：2

作者：

Naik, Sajo P.

Fan, Wei

Ogura, Masaru

Okubo, Tatsuya

机构：

[1] Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, Tokyo 1138656, Japan

[2] PRESTO, JST, Bunkyo Ku, Tokyo 1138656, Japan

来源：

JOURNAL OF POROUS MATERIALS | 2006年 / 13卷 / 3-4期

关键词：

mesoporous silica films; mesophase; transformation; Brij-30;

D O I：

10.1007/s10934-006-8021-6

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

We demonstrate a phase transformation approach for selective control of mesophase in a silica film. Here, the phase transformation is induced by the degradation of organic moiety during calcination of the film. The films are prepared using Brij-30 [C-12 H-25 (OCH2CH2)(4)OH] as a structure directing agent and TEOS (tetraethylorthosilicate) as a source of silica under acidic conditions. The degree of silica condensation of the SiO2/Brij-30 mesophase is found to be a crucial factor enabling the phase transformation.

引用

页码：303 / 306

页数：4

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