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Synchrotron-based studies of transition metal incorporation into silica-based sol-gel materials

Mountjoy, Gavin, Pickup, David M., Holland, Mark A., Wallidge, Graham, Newport, Robert J., Smith, Mark E. (1999) Synchrotron-based studies of transition metal incorporation into silica-based sol-gel materials. MRS Online Proceedings Library, 590 . pp. 83-88. ISSN 0272-9172. (doi:10.1557/PROC-590-83) (KAR id:15928)

Language: English
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Previous structural studies on titania- and zirconia-silica xerogels have shown the occurrence of homogeneous mixing at low metal content, and phase separation at high metal content. The use of additional, complementary, synchrotron-based methods can contribute to a fuller structural description of these materials. We present new X-ray absorption near edge structure (XANES) and SAXS results for (ZrO2)(x)(SiO2)(1-x) xerogels and compare them with previous results for (TiO2)(x)(SiO2)(1-x) xerogels. Significant differences between (TiO2)(x)(SiO2)(1-x) and (ZrO2)(x)(SiO2)(1-x) xerogels are observed in the affects of heat treatment on the coordination of homogeneously mixed metal atoms, and in the development of phase separated metal oxide regions.

Item Type: Article
DOI/Identification number: 10.1557/PROC-590-83
Subjects: Q Science
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User: J.M. Smith
Date Deposited: 08 May 2009 14:28 UTC
Last Modified: 16 Nov 2021 09:53 UTC
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