Acidity-dependent mesostructure transformation of highly ordered mesoporous silica materials during a two-step synthesis

被引：18

作者：

Jin, Zhengwei

Wang, Xiaodong ^{[1
]}

Cui, Xiugu

机构：

[1] Beijing Univ Chem Technol, Sch Mat Sci & Engn, Key Lab Beijing City Preparat & Proc Novel Polyme, Beijing 100029, Peoples R China

[2] Yanbian Univ, Dept Chem Engn & Polymer Sci, Yanji 133002, Jilin, Peoples R China

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2007年 / 353卷 / 26期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/j.jnoncrysol.2007.05.003

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Highly ordered mesoporous silica materials have been synthesized under mildly acidic conditions by templating with a nonionic triblock copolymer (Pluronic P104) in a two-step process. It was found that a transformation from the SBA-15 type 2-dimensional (2D) hexagonal channel mesostructure (p6mm symmetry) to the MSU-X type 3-dimensional (3D) worm-like mesostructure could be induced by varying the pH whilst keeping all other conditions constant. The transformation between two types of mesoporous silica materials call be attributed to the effect of varying proton concentration on the interaction between organic micelles and inorganic species. Both types of mesoporous materials have high surface areas, large pore volumes, thick pore walls, large mean pore sizes, and narrow pore size distribution. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：2507 / 2514

页数：8

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