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Role of titanium in TiO2 : SiO2 sol–gels: an X-ray diffraction study

Rigden, Jane S., Newport, Robert J., Smith, Mark E., Dirken, Peter J., Bushnell-Wye, Graham (1995) Role of titanium in TiO2 : SiO2 sol–gels: an X-ray diffraction study. Journal of Materials Chemistry, 6 (3). pp. 337-342. ISSN 0959-9428. (doi:10.1039/JM9960600337) (Access to this publication is currently restricted. You may be able to access a copy if URLs are provided) (KAR id:15974)

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Abstract

Transmission X-ray diffraction has been used to study a series of powdered silica:titania sol-gel glasses with titania contents ranging from a 'pure' silica sample through to high titania levels where phase separation is predicted to occur. Analysis of the data reveals a change in second- and: third-neighbour coordination numbers with increasing Ti content and confirms that for low titanium contents the sol-gels are atomically mixed. The lower titanium content sol-gels have also been studied as spun thin films using shallow-angle X-ray diffraction. Comparison with the transmission studies shows an increase in disorder in the silica network when the material is in the form of a coating rather than in the bulk. An increase in the nun;ber of Si-O-H bonds is also suggested.

Item Type: Article
DOI/Identification number: 10.1039/JM9960600337
Subjects: Q Science
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User: J.M. Smith
Date Deposited: 29 Apr 2009 13:59 UTC
Last Modified: 16 Nov 2021 09:53 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/15974 (The current URI for this page, for reference purposes)

University of Kent Author Information

Newport, Robert J..

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