Asghar, M.S.A., Inkson, B. orcid.org/0000-0002-2631-9090, Seal, S. et al. (3 more authors) (2019) In-situ observation of radiation physics and chemistry of nanostructured cerium oxide in water. Materials Research Express, 6 (1). 015032. ISSN 2053-1591
Abstract
© 2018 IOP Publishing Ltd. Room temperature electron irradiation in aqueous environment is applied to CeO2 nanoparticles using a transmission electron microscope equipped with liquid environmental cell. Oxide dissolution kinetics become accessible at unprecedented scale of spatial and time resolution through irradiation activation of water within a sub-μm size volume, allowing direct measurements of transformation rate and morphologies. Successful live-observation of the formation of nano-needles provides essential inside in how 1D-nanostructures can form. Furthermore, formation of hydrogen bubbles is found and interpreted in relation to the dose needed for ceria dissolution. The results are of importance for many research applications of ceria in water, e.g. for catalysis, environmental remediation, biomedical radiation protection, anti-corrosion coatings, and ultimately via analogy to UO2 also for fission-power fuel engineering and waste disposal.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 IOP Publishing Ltd. This is an author produced version of a paper subsequently published in Materials Research Express. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Electron irradiation; radiolysis; ceria nanoparticles; in-situ TEM; liquid cell TEM |
Dates: |
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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: | 29 Nov 2018 10:29 |
Last Modified: | 17 Oct 2019 00:39 |
Published Version: | https://doi.org/10.1088/2053-1591/aae634 |
Status: | Published |
Publisher: | IOP Publishing |
Refereed: | Yes |
Identification Number: | 10.1088/2053-1591/aae634 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:139315 |