Formation of copper nanoparticles in LTL ...
Type de document :
Article dans une revue scientifique
DOI :
URL permanente :
Titre :
Formation of copper nanoparticles in LTL nanosized zeolite: spectroscopic characterization
Auteur(s) :
Kharchenko, A. [Auteur]
Laboratoire catalyse et spectrochimie [LCS]
Zholobenko, V. [Auteur]
Keele University [Keele]
Vicente, A. [Auteur]
Laboratoire catalyse et spectrochimie [LCS]
Fernandez, C. [Auteur]
Laboratoire catalyse et spectrochimie [LCS]
Vezin, Herve [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
De Waele, Vincent [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Mintova, S. [Auteur]
Laboratoire catalyse et spectrochimie [LCS]
Laboratoire catalyse et spectrochimie [LCS]
Zholobenko, V. [Auteur]
Keele University [Keele]
Vicente, A. [Auteur]
Laboratoire catalyse et spectrochimie [LCS]
Fernandez, C. [Auteur]
Laboratoire catalyse et spectrochimie [LCS]
Vezin, Herve [Auteur]

Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
De Waele, Vincent [Auteur]

Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Mintova, S. [Auteur]
Laboratoire catalyse et spectrochimie [LCS]
Titre de la revue :
Physical Chemistry Chemical Physics
Nom court de la revue :
Phys. Chem. Chem. Phys.
Numéro :
20
Pagination :
2880-2889
Éditeur :
Royal Society of Chemistry (RSC)
Date de publication :
2018
ISSN :
1463-9084
Discipline(s) HAL :
Chimie/Chimie théorique et/ou physique
Résumé en anglais : [en]
The state of copper species stabilized in nanosized LTL zeolite subjected to various post-synthesis treatments was unveiled by a range of spectroscopic techniques. FTIR and UV-Vis studies demonstrated that the reduction ...
Lire la suite >The state of copper species stabilized in nanosized LTL zeolite subjected to various post-synthesis treatments was unveiled by a range of spectroscopic techniques. FTIR and UV-Vis studies demonstrated that the reduction process of copper in the LTL nanosized zeolite leads to the formation of different species including Cu2+, Cu+ and Cu nanoparticles (Cu NPs). The adsorption of probe molecules (NO and CO) was used to selectively monitor the copper species in the LTL nanosized zeolite upon oxidation and reduction post-synthesis treatments. Both the Cu2+ and Cu+ species were probed by NO and CO, respectively. The amount of Cu+ in the LTL zeolite nanocrystals was about 43% as determined by FTIR, while the amount of Cu NPs was about 55% determined by the UV-Vis spectroscopic characterization. These results were complemented by EPR, 29Si and 63Cu MAS NMR spectroscopic data. The EPR spectroscopy was further applied to monitor the effective reduction of the Cu2+ species and their re-oxidation, while the 63Cu MAS NMR verified the presence of Cu NPs in the LTL nanosized zeolite crystals.Lire moins >
Lire la suite >The state of copper species stabilized in nanosized LTL zeolite subjected to various post-synthesis treatments was unveiled by a range of spectroscopic techniques. FTIR and UV-Vis studies demonstrated that the reduction process of copper in the LTL nanosized zeolite leads to the formation of different species including Cu2+, Cu+ and Cu nanoparticles (Cu NPs). The adsorption of probe molecules (NO and CO) was used to selectively monitor the copper species in the LTL nanosized zeolite upon oxidation and reduction post-synthesis treatments. Both the Cu2+ and Cu+ species were probed by NO and CO, respectively. The amount of Cu+ in the LTL zeolite nanocrystals was about 43% as determined by FTIR, while the amount of Cu NPs was about 55% determined by the UV-Vis spectroscopic characterization. These results were complemented by EPR, 29Si and 63Cu MAS NMR spectroscopic data. The EPR spectroscopy was further applied to monitor the effective reduction of the Cu2+ species and their re-oxidation, while the 63Cu MAS NMR verified the presence of Cu NPs in the LTL nanosized zeolite crystals.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
Université de Lille
CNRS
CNRS
Collections :
Équipe(s) de recherche :
Propriétés magnéto structurales des matériaux (PMSM)
Date de dépôt :
2021-06-17T13:17:48Z
2021-09-14T09:33:03Z
2021-09-14T09:33:03Z