Title :

Gold Nanoparticles Stabilized by δ-Cyclodextrin in Aqueous Media: Characterization and Evaluation of their Catalytic Properties in the Reduction of 4-Nitrophenol

Author(s) :

De La Torre, Ernesto [Auteur]
UCCS Équipe Catalyse Supramoléculaire [CASU]
Noel, Sebastien [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Madureira, A. [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Hansen, K. H. [Auteur]
Danmarks Tekniske Universitet = Technical University of Denmark [DTU]
Erichsen, A. [Auteur]
Danmarks Tekniske Universitet = Technical University of Denmark [DTU]
Ponchel, Anne [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Beeren, S. R. [Auteur]
Danmarks Tekniske Universitet = Technical University of Denmark [DTU]
Monflier, Eric [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Leger, Bastien [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]

Journal title :

ChemNanoMat

Abbreviated title :

ChemNanoMat

Volume number :

10

Pages :

e202400246

Publication date :

2024-11-30

ISSN :

2199-692X

English keyword(s) :

Cyclodextrin
Gold
Metal Nanoparticles
4-Nitrophenol
Catalysis

HAL domain(s) :

Chimie/Catalyse

English abstract : [en]

The synthesis of gold nanoparticles stabilized by cyclomaltononaose (δ-CD) in aqueous phase was performed. Protection of the gold nanoparticles by standard native cyclodextrins such as α-CD, β-CD and γ-CD has also been ...
Show more >The synthesis of gold nanoparticles stabilized by cyclomaltononaose (δ-CD) in aqueous phase was performed. Protection of the gold nanoparticles by standard native cyclodextrins such as α-CD, β-CD and γ-CD has also been considered for comparison. All of these colloidal suspensions were fully characterized by FT-IR, DLS, UV-Vis spectroscopy, TEM, XPS and also NMR experiments. Finally, their catalytic activity was evaluated in the reduction of 4-nitrophenol to 4-aminophenol in the presence of an excess of sodium borohydride. Gold nanoparticles stabilized by δ-CD presented good activity and exhibited better long-term stability. This study highlighted the fact that the obtention of the best catalytic activity corresponds to not only a compromise between the size of the nanoparticles and the interaction of the substrate with the metal nanoparticles surface, but also the supramolecular interactions between the substrate and the cyclodextrin.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Research team(s) :

Catalyse et chimie supramoléculaire (CASU)

Submission date :

2024-12-05T22:02:50Z
2024-12-13T11:07:22Z