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Lookup NU author(s): Dr Dragos Neagu, Dr Chenyang Tang, Dr Kelly Kousi, Professor Ian Metcalfe
This is the authors' accepted manuscript of an article that has been published in its final definitive form by American Chemical Society, 2019.
For re-use rights please refer to the publisher's terms and conditions.
Copyright © 2019 American Chemical Society.Understanding and controlling the formation of nanoparticles at the surface of functional oxide supports is critical for tuning activity and stability for catalytic and energy conversion applications. Here, we use a latest generation environmental transmission electron microscope to follow the exsolution of individual nanoparticles at the surface of perovskite oxides, with ultrahigh spatial and temporal resolution. Qualitative and quantitative analysis of the data reveals the atomic scale processes that underpin the formation of the socketed, strain-inducing interface that confers exsolved particles their exceptional stability and reactivity. This insight also enabled us to discover that the shape of exsolved particles can be controlled by changing the atmosphere in which exsolution is carried out, and additionally, this could also produce intriguing heterostructures consisting of metal-metal oxide coupled nanoparticles. Our results not only provide insight into the in situ formation of nanoparticles but also demonstrate the tailoring of nanostructures and nanointerfaces. ©
Author(s): Neagu D, Kyriakou V, Roiban I-L, Aouine M, Tang C, Caravaca A, Kousi K, Schreur-Piet I, Metcalfe IS, Vernoux P, Van De Sanden MCM, Tsampas MN
Publication type: Article
Publication status: Published
Journal: ACS Nano
Year: 2019
Volume: 13
Issue: 11
Pages: 12996-13005
Online publication date: 21/10/2019
Acceptance date: 21/10/2019
Date deposited: 16/12/2019
ISSN (print): 1936-0851
ISSN (electronic): 1936-086X
Publisher: American Chemical Society
URL: https://doi.org/10.1021/acsnano.9b05652
DOI: 10.1021/acsnano.9b05652
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