Role of Silver Nanoparticles in Enhanced Xenon Adsorption Using Silver-Loaded Zeolites - Université Nice Sophia Antipolis Accéder directement au contenu
Article Dans Une Revue Journal of Physical Chemistry C Année : 2014

Role of Silver Nanoparticles in Enhanced Xenon Adsorption Using Silver-Loaded Zeolites

Résumé

Molecular simulation is used to unravel the adsorption mechanisms of xenon on Ag-doped ZSM-5 zeolite. We show that silver nanoparticles, which form at the external surface of zeolite crystallites, are responsible for enhanced xenon physisorption at very low pressure. We also propose a simple model of adsorption on such composite materials made up of silver-exchanged zeolites and silver nanoparticles adsorbed at the zeolite surface. This model, which allows predicting the adsorption of other gases without any additional parameters, provides a tool to characterize the amount of reduced silver as well as the silver particle size distribution (in good agreement with transmission electron microscopy images). The presence of a majority of silver nanoparticles is further characterized by means of X-ray diffraction and X-ray Absorption Spectroscopy at the silver K edge.
Fichier principal
Vignette du fichier
Deliere2014.pdf (347.9 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-01138386 , version 1 (29-07-2021)

Licence

Paternité

Identifiants

Citer

Ludovic Deliere, Sylvain Topin, Benoit Coasne, Jean-Pierre Fontaine, Sophie de Vito, et al.. Role of Silver Nanoparticles in Enhanced Xenon Adsorption Using Silver-Loaded Zeolites. Journal of Physical Chemistry C, 2014, 118 (43), pp.25032-25040. ⟨10.1021/jp507590a⟩. ⟨hal-01138386⟩
261 Consultations
208 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More