Tuning the Properties of Nanoceria by Applying Force: Stress Induced Ostwald Ripening

Caddeo, Francesco, Corrias, Anna, Sayle, Dean C. (2016) Tuning the Properties of Nanoceria by Applying Force: Stress Induced Ostwald Ripening. Journal of Physical Chemistry C, 120 (26). pp. 14337-14344. ISSN 1932-7447. (doi:10.1021/acs.jpcc.6b02279)

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http://doi.org/10.1021/acs.jpcc.6b02279

Abstract

The ionic conductivity and activity of a material, such as ceria, is central to its exploitation in applications such as fuel cells or catalysis. Grain Boundaries (GB) influence profoundly the ionic conductivity and activity of a material. Accordingly, the ability to control GB concentrations is pivotal to these applications. Here, we show that Oswald ripening can be induced by applying uniaxial force. In particular, grain-boundaries are purged to facilitate single nanocrystals from polycrystalline precursors. Our simulations thus predict mechanisms for strain-tunable properties.

Item Type: Article
DOI/Identification number: 10.1021/acs.jpcc.6b02279
Subjects: Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Anna Corrias
Date Deposited: 08 Jun 2016 10:02 UTC
Last Modified: 29 May 2019 17:27 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/55851 (The current URI for this page, for reference purposes)
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