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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/23676

Title: Reversible restructuring of supported Au nanoparticles during butadiene hydrogenation revealed by operando GISAXS/GIWAXS.
Authors: Martin, David James
Decarolis, Donato
Odarchenko, Yaroslav I.
Herbert, Jennifer J.
Arnold, Thomas
Rawle, Jonathan
Nicklin, Chris
Boyen, Hans-Gerd
Beale, Andrew M.
Issue Date: 2017
Citation: CHEMICAL COMMUNICATIONS, 53(37), p. 5159-5162 (Art N° 32881)
Status: In Press
Abstract: Periodically arranged, monodisperse gold nanoparticles supported on flat silicon substrates were studied for the hydrogenation of 1,3-butadiene under operando conditions using Grazing Incidence Small- and Wide-Angle X-ray Scattering (GISAXS/GIWAXS). It was found that the composition and shape of the nanoparticles depends very much on the chemical environment; the particles are shown to be dynamic, undergoing reversible size and shape change particularly during catalytic reaction, highlighting a dynamism often not observed in traditional studies. Specifically, the size of the Au nanoparticles increases during butadiene hydrogenation and this is attributed to the partial removal of a Au2O3 at the metal–oxide interface and consequential shape change of the nanoparticle from a more hemispherical particle to a particle with a larger height to width ratio.
Notes: Beale, AM (reprint author), UCL, Dept Chem, 20 Gordon St, London WC1H 0AJ, England. Andrew.Beale@ucl.ac.uk
URI: http://hdl.handle.net/1942/23676
DOI: 10.1039/C7CC01887H
ISI #: 000400858400020
ISSN: 1359-7345
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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