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

DOI: 10.1039/C8RA09766F DOI Help

Authors: Danilo Loche (University of Kent) , Lucy M. Morgan (University of Kent) , Alberto Casu (King Abdullah University of Science and Technology) , Gavin Mountjoy (University of Kent) , Colm O'Regan (King Abdullah University of Science and Technology) , Anna Corrias (University of Kent) , Andrea Falqui (King Abdullah University of Science and Technology)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Rsc Advances , VOL 9 , PAGES 6745 - 6751

State: Published (Approved)
Published: February 2019
Diamond Proposal Number(s): 14239

Open Access Open Access

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 use of X-ray absorption spectroscopy to determine the Ce3+/Ce4+ ratio in samples submitted to a degassing treatment at room temperature.

Subject Areas: Materials, Chemistry

Instruments: B18-Core EXAFS

Added On: 26/02/2019 16:43


Discipline Tags:

Chemistry Materials Science Inorganic Chemistry

Technical Tags:

Spectroscopy X-ray Absorption Spectroscopy (XAS) X-ray Absorption Near Edge Structure (XANES)