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Lookup NU author(s): Professor Ian Metcalfe, Dr Evangelos Papaioannou
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2022 The Authors. Advanced Energy Materials published by Wiley-VCH GmbH.High-performance nanoparticle platforms can drive catalysis progress to new horizons, delivering environmental and energy targets. Nanoparticle exsolution offers unprecedented opportunities that are limited by current demanding process conditions. Unraveling new exsolution pathways, particularly at low-temperatures, represents an important milestone that will enable improved sustainable synthetic route, more control of catalysis microstructure as well as new application opportunities. Herein it is demonstrated that plasma direct exsolution at room temperature represents just such a step change in the synthesis. Moreover, the factors that most affect the exsolution process are identified. It is shown that the surface defects produced initiate exsolution under a brief ion bombardment of an argon low-pressure and low-temperature plasma. This results in controlled nanoparticles with diameters ≈19–22 nm with very high number densities thus creating a highly active catalytic material for CO oxidation which rivals traditionally created exsolved samples.
Author(s): Khalid H, Haq AU, Alessi B, Wu J, Savaniu CD, Kousi K, Metcalfe IS, Parker SC, Irvine JTS, Maguire P, Papaioannou EI, Mariotti D
Publication type: Article
Publication status: Published
Journal: Advanced Energy Materials
Year: 2022
Volume: 12
Issue: 45
Print publication date: 01/12/2022
Online publication date: 03/10/2022
Acceptance date: 02/04/2018
Date deposited: 15/03/2023
ISSN (print): 1614-6832
ISSN (electronic): 1614-6840
Publisher: John Wiley and Sons Inc
URL: https://doi.org/10.1002/aenm.202201131
DOI: 10.1002/aenm.202201131
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