Issue 25, 2008
From the journal:

Journal of Materials Chemistry

Columnar liquid crystals of gibbsite platelets as templates for the generation of ordered silica structures†‡

M. C. D. Mourad,*a   E. Groeneveld,a   P. J. de Lange,a   C. Vonk,a   D. van der Beekb  and  H. N. W. Lekkerkerkera  

* Corresponding authors

a Van 't Hoff Laboratory for Physical and Colloid Chemistry, Debye Institute, Utrecht University, Padualaan 8, Utrecht, The Netherlands
E-mail: m.c.d.mourad@uu.nl

b Albemarle Catalysts Company B.V., Nieuwendammerkade 1-3, Amsterdam, The Netherlands

Abstract

In this paper we describe the use of columnar liquid crystals of silica coated colloidal gibbsite platelets as templates for the generation of ordered silica structures. The colloidal liquid crystal phases can be formed in a few hours by modest centrifugation forces (100–200g). Base catalysed hydrolysis of tetraethoxysilane (TEOS) is used to deposit silica in the space between the silica coated gibbsite particles. The size of the gibbsite platelets is varied between 200 and 500 nm and the thickness of the silica coating between 5 and 15 nm making the system a very versatile templating material. Acid leaching is used to selectively remove the gibbsite material.

Graphical abstract: Columnar liquid crystals of gibbsite platelets as templates for the generation of ordered silica structures

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Article information

DOI
https://doi.org/10.1039/B803564B
Article type
Paper
Submitted
29 Feb 2008
Accepted
28 Apr 2008
First published
21 May 2008

J. Mater. Chem., 2008,18, 3004-3010

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Columnar liquid crystals of gibbsite platelets as templates for the generation of ordered silica structures

M. C. D. Mourad, E. Groeneveld, P. J. de Lange, C. Vonk, D. van der Beek and H. N. W. Lekkerkerker, J. Mater. Chem., 2008, 18, 3004 DOI: 10.1039/B803564B

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