Oxygen speciation in nanophase MgO from solid-state O-17 NMR

Chadwick, Alan V. and Poplett, I.J.F. and Maitland, D.T.S. and Smith, Mark E. (1998) Oxygen speciation in nanophase MgO from solid-state O-17 NMR. Chemistry of Materials, 10 (3). pp. 864-70. ISSN 0897-4756. (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)

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Nanocrystalline MgO has been sol-gel manufactured to give a range of crystallite sizes from 1.8 to 35 nm as determined by powder X-ray diffraction. A multinuclear magnetic resonance approach using C-13, O-17, and Mg-25 provides information on the atonic scale structure. It is found that despite extensive hydrolysis that -CH3 fragments persist until extensive calcination has been performed. In O-17 magic angle spinning NMR spectra three signals are detected that are assigned to MgO-like, a surface species, and a unit also like MgO but with carbon as the third nearest neighbor, demonstrating the high sensitivity of the O-17 chemical shift to local structure and its ability to detect medium-range order.

Item Type: Article
Subjects: Q Science > QD Chemistry
Q Science > QC Physics
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: I. Ghose
Date Deposited: 04 Apr 2009 08:33
Last Modified: 14 May 2014 11:09
Resource URI: https://kar.kent.ac.uk/id/eprint/17633 (The current URI for this page, for reference purposes)
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