Determining the maximum lanthanum incorporation in the fluorite structure of La-doped ceria nanocubes for enhanced redox ability

Loche, Danilo, Morgan, Lucy M. Morgan, Casu, Alberto, Mountjoy, Gavin, O'Regan, Colm, Corrias, Anna, Falqui, Andrea (2019) Determining the maximum lanthanum incorporation in the fluorite structure of La-doped ceria nanocubes for enhanced redox ability. RSC Advances, 9 (12). pp. 6745-6751. ISSN 2046-2069. (doi:10.1039/c8ra09766f)

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Abstract

Ceria nanocubes have been doped with increasing amounts of lanthanum to enhance their redox ability. X-ray diffraction and transmission electron microscopy techniques provide a consistent picture indicating that there is an upper limit to the lanthanum that can be incorporated in the fluorite structure of ceria nanocubes, which is close to 7.5 mol% La. This limited loading is nevertheless able to produce a significant enhancement of the ceria redox ability as evidenced by the use of X-ray absorption spectroscopy to determine the Ce3+/Ce4+ ratio in samples submitted to a degassing treatment at room temperature.

Item Type: Article
DOI/Identification number: 10.1039/c8ra09766f
Subjects: Q Science > QD Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Anna Corrias
Date Deposited: 26 Feb 2019 16:15 UTC
Last Modified: 12 Jul 2019 14:31 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/72764 (The current URI for this page, for reference purposes)
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