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

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.

SUBMITTER: Loche D

PROVIDER: S-EPMC9061073 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature

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

Loche Danilo D Morgan Lucy M LM Casu Alberto A Mountjoy Gavin G O'Regan Colm C Corrias Anna A Falqui Andrea A

RSC advances 20190226 12

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 ...[more]

PMID: 35518478

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