Synthesis of silica mesoporous crystals with controlled structure and morphology using gemini surfactant

被引：13

作者：

Chen, Qianru

Sakamoto, Yasuhiro

Terasaki, Osamu

Che, Shunai

机构：

[1] Shanghai Jiao Tong Univ, Sch Chem & Chem Technol, State Key Lab Comoposite Mat, Shanghai 200240, Peoples R China

[2] Univ Stockholm, Arrhenius Lab, S-10691 Stockholm, Sweden

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2007年 / 105卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

mesoporous silica; gemini surfactant; morphology; mesostructure;

D O I：

10.1016/j.micromeso.2007.06.049

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Silica mesoporous crystals with different morphologies were prepared based on the self-assembly of the gemini cationic surfactant [C16H33N+(CH3)(2)(CH2)(3)N+(CH3)(3)]Br-2(C16-3-1) and tetraethyl orthosilicate (TEOS) in water under acidic condition. By controlling the kind of acids (H2SO4 or HQ, temperature and synthesis compositions, three well-ordered silica mesoporous crystals, cubic Fm(3)m, three-dimensional hexagonal P6(3)/mmc and cubic Pm3n, with distinct morphologies were synthesized. In the synthesis system with H2SO4. the crystals changed the structure from Pm3n to Fm3m with decrease in acidity and increase in synthesis temperature; and in the synthesis with HCl. the crystals with Fm3m and P6(3)/mmc were synthesized by changing the synthesis compositions, especially C16-3-1/H2O and C16-3-1/TEOS molar ratios. (C) 2007 Elsevier Inc. All rights reserved.

引用

页码：24 / 33

页数：10

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