Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 357, Issue 1-3, Pages 91-96Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfa.2009.09.019
Keywords
SBA-15; Micelle-templated synthesis; Swelling agent; Ordered mesoporous silica; Nitrogen adsorption
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Funding
- Center for Engineered Polymeric Materials
- New York State Office of Science, Technology and Academic Research (NYSTAR)
- National Science Foundation [DMR-0225180, CHE-0723028]
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The low temperature synthesis of large-pore SBA-15 silicas with two-dimensional (2-D) hexagonal structure was elaborated using tetramethyl orthosilicate (TMOS) as a silica source, Pluronic P123 (EO20PO70EO20) triblock copolymer as a template, and 1,3,5-triisopropylbenzene as a micelle expander. The adjustment of the initial synthesis temperature, the hydrothermal treatment time and the amount of the swelling agent allowed us to obtain well-ordered SBA-15 (with three or more peaks on small-angle X-ray scattering patterns) with (1 0 0) interplanar spacings tunable in the range from 15 to 22 nm and with pore diameters up to 21 nm. These materials exhibited narrow pore size distributions and large pore volumes (above 1 cm(3) g(-1)). (C) 2009 Elsevier B.V. All rights reserved.
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