Ceria-Water-Reactions Studied by Liquid Cell TEM

Abstract

Liquid cell TEM is demonstrated to be a highly suitable new technology to study chemical reactions of cerium oxide nanostructures in aqueous environment. Ceria nanoparticles are found to show a diversity of behaviour. At low beam intensity, particle hopping movements and particle attachment, including chain formation is observable. At high intensity, when the water is turned ultra-enriched in ions by radiolysis, we find (in order of observation) particle rounding and shrinkage, followed by complete dissolution, along with formation of new reaction phases, and finally gas bubble formation.

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Authors/Creators:	Asghar, M.S.A. Inkson, B. https://orcid.org/0000-0002-2631-9090 Möbus, G.
Copyright, Publisher and Additional Information:	Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence (https://creativecommons.org/licenses/by/3.0/). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Dates:	Published (online): 16 October 2017 Published: 16 October 2017
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield)
Depositing User:	Symplectic Sheffield
Date Deposited:	20 Dec 2017 12:04
Last Modified:	20 Dec 2017 12:04
Published Version:	https://doi.org/10.1088/1742-6596/902/1/012004
Status:	Published
Publisher:	Institute of Physics
Refereed:	Yes
Identification Number:	https://doi.org/10.1088/1742-6596/902/1/012004

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Ceria-Water-Reactions Studied by Liquid Cell TEM

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