Sol-gel synthesis and structural characterisation of binary TiO2-P2O5 glasses

Pickup, David M. and Speight, Richard J. and Knowles, Jonathan C. and Smith, Mark E. and Newport, Robert J. (2008) Sol-gel synthesis and structural characterisation of binary TiO2-P2O5 glasses. Materials Research Bulletin, 43 (2). pp. 333-342. ISSN 0025-5408. (Full text available)

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http://dx.doi.org/10.1016/j.materresbull.2007.03.0...

Abstract

An improved method for the sol-gel synthesis of binary (TiO2)(0.5)(P2O5)(0.5) glasses has been developed. Elemental analysis of the products showed that the loss of phosphorous upon drying and heat treatment is low. The structure of the heat-treated glasses was studied using neutron diffraction and high-energy X-ray diffraction, analysis of which revealed a structure consisting Of PO4 tetrahedra and TiO6 octahedra sharing corners in a three-dimensional amorphous network. The Reverse Monte Carlo method was used to produce a structural model which illustrated that the structure of the glass is, at the near-neighbour level, closely analogous to the superstructure of crystalline TiP2O7. No significant atomic-scale structural differences were observed between glasses prepared by acid- or base-catalysed sol-gel reactions. (c) 2007 Elsevier Ltd. All rights reserved.

Item Type: Article
Uncontrolled keywords: amorphous materials sol-gel chemistry neutron scattering X-ray diffraction
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Depositing User: J.M. Smith
Date Deposited: 13 May 2009 11:35
Last Modified: 03 Jun 2014 15:09
Resource URI: http://kar.kent.ac.uk/id/eprint/15960 (The current URI for this page, for reference purposes)
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