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Templating of Mesoporous Molecular Sieves by Nonionic Polyethylene Oxide Surfactants
Abstract
Mesoporous silica molecular sieves have been prepared by the hydrolysis of tetraethylorthosilicate in the presence of low-cost, nontoxic, and biodegradable polyethylene oxide (PEO) surfactants, which act as the structure-directing (templating) agents. This nonionic, surfactant-neutral, inorganic-precursor templating pathway to mesostructures uses hydrogen bonding interactions between the hydrophilic surfaces of flexible rod- or worm-like micelles and Si(OC 2 H 5 ) 4-x (OH) x hydrolysis products to assemble an inorganic oxide framework. Disordered channel structures with uniform diameters ranging from 2.0 to 5.8 nanometers have been obtained by varying the size and structure of the surfactant molecules. Metal-substituted silica and pure alumina mesostructures have also been prepared by the hydrolysis of the corresponding alkoxides in the presence of PEO surfactants. These results suggest that nonionic templating may provide a general pathway for the preparation of mesoporous oxides.
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Citations
Cited by
Ordered mesoporous materials in catalysis
Taguchi, A., & Schüth, F. (2005) · Microporous and Mesoporous Materials · doi:10.1016/j.micromeso.2004.06.030 · Cited by 2,119
A Review: Fundamental Aspects of Silicate Mesoporous Materials
ALOthman, Z. (2012) · Materials · doi:10.3390/ma5122874 · Cited by 2,084
Trewyn, B. G., Slowing, I. I., Giri, S., Chen, H.-T., & Lin, V. S.-Y. (2007) · Accounts of Chemical Research · doi:10.1021/ar600032u · Cited by 1,123
Liquid-crystalline phases as templates for the synthesis of mesoporous silica
Attard, G. S., Glyde, J. C., & Göltner, C. G. (1995) · Nature · doi:10.1038/378366a0 · Cited by 1,120
Ciesla, U., & Schüth, F. (1999) · Microporous and Mesoporous Materials · doi:10.1016/s1387-1811(98)00249-2 · Cited by 1,084
Metadata
- Authors
- Bagshaw, S. A., Prouzet, E., & Pinnavaia, T. J.
- Venue
- Science
- Published
- 1995-09
- Volume
- 269
- Issue
- 5228
- Pages
- 1242-1244
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W1974541812
- Cited by
- 1,556
- References
- 0
- FWCI
- 33.08
- Type
- journal article
- Language
- en
- Open access
- closed
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- Bagshaw, S. A., Prouzet, E., & Pinnavaia, T. J. (1995). Templating of Mesoporous Molecular Sieves by Nonionic Polyethylene Oxide Surfactants. Science. https://doi.org/10.1126/science.269.5228.1242
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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