An atomic-scale study of the role of titanium in TiO2:SiO2 sol-gel materials

Walters, J.K., Rigden, Jane S., Dirken, P.J., Smith, Mark E., Howells, W.S., Newport, Robert J. (1997) An atomic-scale study of the role of titanium in TiO2:SiO2 sol-gel materials. Chemical Physics Letters, 264 (5). pp. 539-544. ISSN 0009-2614. (doi:10.1016/S0009-2614(96)01359-0) (Access to this publication is currently restricted. You may be able to access a copy if URLs are provided) (KAR id:16000)

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Official URL: http://dx.doi.org/10.1016/S0009-2614(96)01359-0

Abstract

Neutron diffraction data is used to reveal details of the effect of adding titania to a silica-based sol-gel, including a first direct observation of the Ti-O correlation, At low Ti contents the data are consistent with the 4-fold oxygen coordination derived from NMR. Even at these concentrations the silica network is shown to have been affected significantly, with bond-length distributions being narrowed, and with a high level of network-OH indicating a qualitative change in the mesoscopic structure associated with interfacial surfaces, Data on a phase separated sample supports the conclusion that the network-OH is associated with the phase separation process.

Item Type:	Article
DOI/Identification number:	10.1016/S0009-2614(96)01359-0
Subjects:	Q Science
Divisions:	Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User:	J.M. Smith
Date Deposited:	09 Apr 1914 20:04 UTC
Last Modified:	05 Nov 2024 09:50 UTC
Resource URI:	https://kar.kent.ac.uk/id/eprint/16000 (The current URI for this page, for reference purposes)

University of Kent Author Information

Newport, Robert J..

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