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Observer la surface d'une nanoparticule pendant l’acte catalytique

Sophie Carenco 1
1 MHN - Matériaux Hybrides et Nanomatériaux
LCMCP - Laboratoire de Chimie de la Matière Condensée de Paris
Abstract : At the macroscale, appearances can be deceptive : when exposed to gas, the surface of a metal is actually able to reconstruct. This remains true for nanoparticles used in a catalytic process, though a nanoparticle contains but a few thousand atoms. Amongst the tools developed for monitoring these elusive transformations, X-ray photoelectron spectroscopy under the pressure of gas has been developed strongly over the last years. This article presents the case of core-shell metal nanoparticles containing nickel and cobalt, for which this spectroscopy has highlighted structural transformations during the hydrogenation of carbon dioxide.
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Submitted on : Friday, March 24, 2017 - 4:35:48 PM
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Sophie Carenco. Observer la surface d'une nanoparticule pendant l’acte catalytique. L'Actualité Chimique, Société chimique de France, 2016, 408-409, pp.93-96. ⟨hal-01495236⟩



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