Role of titanium in TiO2:SiO2 sol-gels: An x-ray diffraction study

Rigden, Jane S. and Newport, Robert J. and Smith, Mark E. and Dirken, Peter J. and Bushnell-Wye, Graham (1995) Role of titanium in TiO2:SiO2 sol-gels: An x-ray diffraction study. In: 2nd International Conference on Materials Chemistry (MC2), July 1995, Kent, England. (doi: (Access to this publication is currently restricted. You may be able to access a copy if URLs are provided)

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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: Conference or workshop item (Paper)
Subjects: Q Science
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: J.M. Smith
Date Deposited: 29 Apr 2009 13:59 UTC
Last Modified: 26 Jun 2017 19:12 UTC
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