Molecular design of AEC tri-block anionic surfactant towards rational synthesis of targeted thick-walled mesoporous silica

被引：6

作者：

Gong, Runhuan ^{[1
]}

Han, Lu ^{[1
]}

Gao, Chuanbo ^{[1
]}

Shu, Mouhai ^{[1
]}

Che, Shunai ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Chem & Chem Technol, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2009年 / 19卷 / 21期

基金：

中国国家自然科学基金;

关键词：

TEMPLATING ROUTE; CRYSTAL; SIEVES; COPOLYMER; TRIBLOCK; CARBON;

D O I：

10.1039/b822742j

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Here we report a new synthesis strategy to synthesize thick-walled two dimensional hexagonal mesoporous silicas, using tri-block surfactant fatty alcohol ether carboxylate [AEC: CnH2n+1O(CH2CH2O)(m)CH2COONa] with two different hydrophilic head groups of (EO)(x)-block and anionic carboxylate. The unique formation of double-layer silica wall arose from two types of hydrophilic head groups via the silica source condensation led to an obvious increase in the wall thickness. The successful carbon replication proved the existence of micropores formed by imbedded (EO)(x)-block and electrostatic bonding of carboxylate head group and organic group of co-structure directing agent. The template-free mesoporous silica showed a high hydrothermal stability due to the thick wall.

引用

页码：3404 / 3411

页数：8

共 31 条

[1] Synthesis of a stable hexagonally packed mesoporous niobium oxide molecular sieve through a novel ligand-assisted templating mechanism [J].