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Characterisation of titania gels by 17O nuclear magnetic resonance and electron diffraction

Bastow, Timothy J., Moodie, Alec F., Smith, Mark E., Whitfield, Harold J. (1993) Characterisation of titania gels by 17O nuclear magnetic resonance and electron diffraction. Journal of Materials Chemistry, 3 (7). pp. 697-702. ISSN 0959-9428. (doi:10.1039/JM9930300697) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1039/JM9930300697

Abstract

The reaction of O-17-labelled water with titanium n-propoxide [Ti(OPrn)4] proceeds rapidly to produce OTi3 and OTi4 environments that can be clearly identified from O-17 magic-angle spinning NMR spectra. The gel structure is highly disordered but the quadrupolar interaction is shown to be small throughout (quadrupolar coupling constant, C(q) < 1.5 MHz). Organic fragments, which can be monitored by C-13 NMR, remain right up until crystallisation of anatase at 300-degrees-C.Crystallisation is confirmed by electron diffraction, and electron microscopy determines the crystallite size to be ca. 3 nm. O-17 NMR and electron diffraction are also used to follow the conversion of anatase to rutile.

Item Type: Article
DOI/Identification number: 10.1039/JM9930300697
Subjects: Q Science > QD Chemistry
Divisions: Faculties > Sciences > School of Biosciences
Depositing User: R.F. Xu
Date Deposited: 22 Oct 2009 19:22 UTC
Last Modified: 20 Jun 2019 10:34 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/20790 (The current URI for this page, for reference purposes)
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