Difference between revisions of "Preparation of Hard Mesoporous Silica Spheres"

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== Summary ==
 
== Summary ==
  
This paper describes the synthesis of small spheres (0.1-2mm in diameter) made of a mesoporous silica from a surfactant-stabilized emulsion chemistry. What is remarkable about this technique is that the spheres, with hierarchical, levels of ordering on multiple length scales, are synthesized in a one step process. The spheres are synthesized as follows: The silicon ester tetrabutyl orthosilicate (TBOS, <math>Si(OC_{4}H_{9})_{4}</math>) is used as both the silica precursor and the organic phase in a slightly basic aqueous emulsion. The surfactant, [http://en.wikipedia.org/wiki/Cetyl_trimethylammonium_bromide cetyltetramethylammonium bromide]
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This paper describes the synthesis of small spheres (0.1-2mm in diameter) made of a mesoporous silica from a surfactant-stabilized emulsion chemistry. What is remarkable about this technique is that the spheres, with hierarchical, levels of ordering on multiple length scales, are synthesized in a one step process. The spheres are synthesized as follows: The silicon ester tetrabutyl orthosilicate (TBOS, <math>Si(OC_{4}H_{9})_{4}</math>) is used as both the silica precursor and the organic phase in a slightly basic aqueous emulsion. The [[surfactant]], [http://en.wikipedia.org/wiki/Cetyl_trimethylammonium_bromide cetyltetramethylammonium bromide]
  
 
[[Image:Iantopic9.jpg]]
 
[[Image:Iantopic9.jpg]]
  
 
== Soft-Matter Discussion ==
 
== Soft-Matter Discussion ==

Revision as of 20:14, 2 December 2009

(under construction)

Original entry: Ian Bruce Burgess Fall 2009


References

Q. Huo, J. Feng, F. Schuth, G.D. Stucky, Chemistry of Materials 9, 14-17 (1997).

Summary

This paper describes the synthesis of small spheres (0.1-2mm in diameter) made of a mesoporous silica from a surfactant-stabilized emulsion chemistry. What is remarkable about this technique is that the spheres, with hierarchical, levels of ordering on multiple length scales, are synthesized in a one step process. The spheres are synthesized as follows: The silicon ester tetrabutyl orthosilicate (TBOS, <math>Si(OC_{4}H_{9})_{4}</math>) is used as both the silica precursor and the organic phase in a slightly basic aqueous emulsion. The surfactant, cetyltetramethylammonium bromide

Iantopic9.jpg

Soft-Matter Discussion