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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 | Source: | 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 | Keywords: | nanoparticles, catalysis, Small- and Wide-Angle X-ray Scattering | Document URI: | http://hdl.handle.net/1942/23676 | ISSN: | 1359-7345 | e-ISSN: | 1364-548X | DOI: | 10.1039/C7CC01887H | ISI #: | 000400858400020 | Rights: | © The Royal Society of Chemistry 2017 | Category: | A1 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
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c7cc01887h.pdf | Published version | 2.02 MB | Adobe PDF | View/Open |
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