Formation of copper nanoparticles in LTL nanosized zeolite: spectroscopic characterization

Kharchenko, A.; Zholobenko, V.; Vicente, A.; Fernandez, C.; Vezin, Herve; De Waele, Vincent; Mintova, S.

Document type :

Article dans une revue scientifique

DOI :

10.1039/c7cp07650a

Permalink :

http://hdl.handle.net/20.500.12210/39532

Title :

Formation of copper nanoparticles in LTL nanosized zeolite: spectroscopic characterization

Author(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]

Journal title :

Physical Chemistry Chemical Physics

Abbreviated title :

Phys. Chem. Chem. Phys.

Volume number :

Pages :

2880-2889

Publisher :

Royal Society of Chemistry (RSC)

Publication date :

2018

ISSN :

1463-9084

HAL domain(s) :

Chimie/Chimie théorique et/ou physique

English abstract : [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 ...
Show more >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.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS

Collections :

Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516

Research team(s) :

Propriétés magnéto structurales des matériaux (PMSM)

Submission date :

2021-06-17T13:17:48Z
2021-09-14T09:33:03Z

Version	Link	Modification date
2	20.500.12210/39532*	2021-09-14T09:26:04Z
1	20.500.12210/39532.1	2021-06-17T13:17:48Z

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Formation of copper nanoparticles in LTL ...

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