Issue 48, 2005
From the journal:

Journal of Materials Chemistry

Ionic liquids as solvent and solvent additives for the synthesis of sol–gel materials

Marc A. Klingshirn,b   Scott K. Spear,a   John D. Holbreyc  and  Robin D. Rogers*a  

* Corresponding authors

a Department of Chemistry and Center for Green Manufacturing The University of Alabama, Box 870336, Tuscaloosa, AL, USA
E-mail: rdrogers@bama.ua.edu
Fax: (205) 348-0823
Tel: (205) 348-4323

b Chemistry Department, St. Olaf College, 1520 St. Olaf Avenue, Northfield, MN 55057, USA

c QUILL, Queen's University of Belfast, Belfast, Northern Ireland, UK

Abstract

The ionic liquid (IL) 1-butyl-3-methylimidazolium chloride was used as a drying control chemical additive in the synthesis of silica sol–gel materials with and without methanol as a co-solvent. The resulting gels were characterized by using thermogravimetric analysis, differential scanning calorimetry, infrared spectroscopy and water sorption kinetics. Calcined gels were analyzed using scanning electron microscopy and nitrogen adsorption isotherms for surface area and pore volume determination. Non-calcined gels were monolithic and showed general cloudiness with lesser degrees observed at higher IL volumes. Calcinations resulted in the formation of powders with increased available surface area as the amount of IL volume was increased. This is consistent with an increase in respective pore volume but a general decrease in average pore size. The resulting materials exhibited conventional structural microdomains, in contrast to periodicity reported when other ionic liquids were used as templates.

Graphical abstract: Ionic liquids as solvent and solvent additives for the synthesis of sol–gel materials

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Article information

DOI
https://doi.org/10.1039/B508927A
Article type
Paper
Submitted
27 Jun 2005
Accepted
06 Oct 2005
First published
27 Oct 2005

J. Mater. Chem., 2005,15, 5174-5180

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Ionic liquids as solvent and solvent additives for the synthesis of sol–gel materials

M. A. Klingshirn, S. K. Spear, J. D. Holbrey and R. D. Rogers, J. Mater. Chem., 2005, 15, 5174 DOI: 10.1039/B508927A

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