Martin, DJ;
Decarolis, D;
Odarchenko, YI;
Herbert, JJ;
Arnold, T;
Rawle, J;
Nicklin, C;
... Beale, AM; + view all
(2017)
Reversible restructuring of supported Au nanoparticles during butadiene hydrogenation revealed by operando GISAXS/GIWAXS.
Chemical Communications
, 53
(37)
pp. 5159-5162.
10.1039/c7cc01887h.
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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.
Type: | Article |
---|---|
Title: | Reversible restructuring of supported Au nanoparticles during butadiene hydrogenation revealed by operando GISAXS/GIWAXS |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1039/c7cc01887h |
Publisher version: | http://dx.doi.org/10.1039/c7cc01887h |
Language: | English |
Additional information: | This Open Access Article is licensed under a Creative Commons Attribution 3.0 Unported Licence |
Keywords: | Science & Technology, Physical Sciences, Chemistry, Multidisciplinary, Chemistry, Selective 1,3-Butadiene Hydrogenation, Gold Nanoparticles, Carbon-Monoxide, Particle-Size, Catalysts, Oxidation, Buta-1,3-Diene, Adsorption, Stability, Pressure |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
URI: | https://discovery.ucl.ac.uk/id/eprint/1556065 |
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