Preparation of mesoporous materials with adjustable pore size using anionic and cationic surfactants

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The mesopores of mesoporous materials prepared with the anionic surfactant N-lauroyl-L-glutamic monosodium salt (AS) were enlarged by adding the cationic surfactant hexadecyltrimethylammonium bromide (CS) to the micelles of AS at pH 9. The zeta-potential of the micelles in the synthetic mixtures and the physical state of the assembled surfactants in the mesopores were examined by a light scattering spectrophotometer, H-1 C-13 CP-MAS NMR and DSC. The average pore diameters of the mesopores increased from 2.8 nm to 6.2 nm with increasing the content of CS. CS molecules inserted to the micelles composed of AS molecules, resulting in the enlargement of mesopores. However, the addition of too much CS interfered with the formation of the micelles. As a result, no mesoporous materials were produced when the ratio of CS to AS was above 80%. (C) 2007 Elsevier Inc. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2008-07
Language
English
Article Type
Article
Citation

MICROPOROUS AND MESOPOROUS MATERIALS, v.112, no.1-3, pp.458 - 466

ISSN
1387-1811
DOI
10.1016/j.micromeso.2007.10.023
URI
http://hdl.handle.net/10203/91016
Appears in Collection
NT-Journal Papers(저널논문)CH-Journal Papers(저널논문)
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