Morphology control of mesoporous silica particles

被引：61

作者：

Naik, Sajo P. ^{[1
]}

Elangovan, S. P.

Okubo, Tatsuya

Sokolov, Igor

机构：

[1] Clarkson Univ, Dept Phys, Potsdam, NY 13699 USA

[2] Clarkson Univ, Dept Chem, Potsdam, NY 13699 USA

[3] Clarkson Univ, CAMP, Potsdam, NY 13699 USA

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

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2007年 / 111卷 / 30期

关键词：

D O I：

10.1021/jp072184a

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：

We demonstrate morphology dependence of mesoporous silica synthesized in acidic condition via the control of silica hydrolysis and condensation at 4 degrees C under quiescent acidic condition, and without using any organic cosolvents. Tetramethyl orthosilicates (TMOS) is used as a silica source and cetyltrimethylammonium chloride (CTAC) as the structure directing agent ( SDA). Straight fibers of different aspect ratio with pore channels aligned parallel to the fiber axis are synthesized by varying TMOS from the sols of molar compositions 0.17-0.32TMOS: 0.22CTAC: 9HCl: 100H(2)O. Curved morphologies such as discoids and spheres are prepared by controlling acidity in the sols of molar compositions 0.17TMOS: 0.22CTAC: 14-16HCl: 100H2O. The mesoporous silica particles show BET surface area of 1100-1400 cm3/g, and the mesopore diameter and mesopore volume are in the range of 2.2- 2.6 nm and 0.6-0.8 cm(3)/g, respectively.

引用

页码：11168 / 11173

页数：6

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[11] GENERALIZED SYNTHESIS OF PERIODIC SURFACTANT INORGANIC COMPOSITE-MATERIALS [J].