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In situ SAXS/XRD on mesoscopically ordered surfactant-silica mesophases; What can we learn?

Published online by Cambridge University Press:  01 February 2011

Mika Lindén ,
Cilaine V. Teixeira ,
Heinz Amenitsch ,
Viveka Alfredsson  and
Freddy Kleitz
Mika Lindén
Affiliation:
Dept. Phys. Chem., Abo Akademi University, Porthansgatan 3–5, 20500 Turku, Finland
Cilaine V. Teixeira
Affiliation:
Dept. Phys. Chem., Abo Akademi University, Porthansgatan 3–5, 20500 Turku, Finland
Heinz Amenitsch
Affiliation:
Austrian Academy of Science, Schmiedlstrasse 6, 8043 Graz, Austria
Viveka Alfredsson
Affiliation:
Phys. Chem. 1, Lund University, 221 00 Lund, Sweden
Freddy Kleitz
Affiliation:
Dept. Heterogeneous Catalysis, Max-Planck Institute for Coal Research, Kaiser-Wilhelm-Platz 1, 45470 Mülheim/Ruhr, Germany
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Abstract

In situ investigations have proven to be a very useful means of understanding the different processes involved in the formation of mesoporous materials. In this communication, we demonstrate the potential of in situ small angle x-ray scattering, SAXS and x-ray diffraction, XRD, measurements for giving both qualitative and quantitative results on the structural evolution during the early stages of the surfactant-silicate composite formation. The examples given are based on results obtained for 2D hexagonal structures, synthesized both under acidic and alkaline conditions. Careful analysis of both the scattering and diffraction patterns allows the different stages of the formation to be described in some detail. Thus, new synthesis approaches can be foreseen that allow the structure of the final hybrid mesophase to be rationally controlled.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 847: Symposium EE – Organic/Inorganic Hybrid Materials , 2004 , EE6.1
Copyright
Copyright © Materials Research Society 2005

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References

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