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Investigation of the Morphology of the Mesoporous SBA-16 and SBA-15 Materials

Mesoporous SBA-16 and SBA-15 were studied in order to control their possible morphologies. SBA-16 is synthesized using a silicon source (tetraethoxysilane, TEOS) and a ternary system consisting of surfactant F127 (EO106PO70EO106), water, and butanol. The same ternary system, with higher butanol conc...

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Bibliographic Details
Published in:The journal of physical chemistry. B 2006-05, Vol.110 (18), p.9183-9187
Main Authors: Stevens, Wesley J. J, Lebeau, Kurt, Mertens, Myrjam, Van Tendeloo, Gustaaf, Cool, Pegie, Vansant, Etienne F
Format: Article
Language:English
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Summary:Mesoporous SBA-16 and SBA-15 were studied in order to control their possible morphologies. SBA-16 is synthesized using a silicon source (tetraethoxysilane, TEOS) and a ternary system consisting of surfactant F127 (EO106PO70EO106), water, and butanol. The same ternary system, with higher butanol concentration, is used to form SBA-15 material as well. An increase of the TEOS concentration results in a morphology shift of SBA-16 from micron-sized spheres, over randomly shaped aggregated particles, to macrospheres with a size of 15 mm. An identical increase in TEOS concentration also results in the formation of SBA-15 macrospheres, which can be controlled in size. Micron-sized spheres of SBA-15 were formed using a quaternary system of surfactant P123 (EO20PO70EO20), cetyltrimethylammonium bromide (CTAB), ethanol, and water. All mesoporous silica materials were characterized using SEM, XRD, and N2 sorption techniques.
ISSN:1520-6106
1520-5207
DOI:10.1021/jp0548725