Gold Nanoparticles Stabilized by δ‐Cyclodextrin in Aqueous Media: Characterization and Evaluation of their Catalytic Properties in the Reduction of 4‐Nitrophenol
Abstract 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.
Authors
- Andreas Erichsen (ORCID: https://orcid.org/0000-0002-6004-6081)
- Bastien Léger (ORCID: https://orcid.org/0000-0003-2411-1162)
- Éric Monflier (ORCID: https://orcid.org/0000-0001-5865-0979)
- Kasper H. Hansen (ORCID: https://orcid.org/0000-0002-9531-9801)
- Sébastien Noël (ORCID: https://orcid.org/0000-0001-6074-8377)
- Antonio Madureira (ORCID: https://orcid.org/0000-0002-9571-9979)
- Anne Ponchel (ORCID: https://orcid.org/0000-0003-0476-7973)
- Sophie R. Beeren (ORCID: https://orcid.org/0000-0002-6682-3603)
- Ernesto de la Torre
Institutions
- Centre National de la Recherche Scientifique (FR)
- Université de Lille (FR)
- Unité de catalyse et de chimie du solide de Lille (FR)
- Université d'Artois (FR)
- École Centrale de Lille (FR)
- Technical University of Denmark (DK)
Publication Details
- Journal
- ChemNanoMat
- Published
- 2024-10-04
- DOI
- https://doi.org/10.1002/cnma.202400246
- Citations
- 3
- Primary Topic
- Nanomaterials for catalytic reactions
- Type
- article
- Field-Weighted Citation Impact
- 0.75
Funders
- European Commission
- Carlsbergfondet
- Novo Nordisk
- Ministère de l'Enseignement Supérieur et de la Recherche
- Danmarks Frie Forskningsfond
- Novo Nordisk Fonden
- Région Hauts-de-France
- Institut Chevreul
- European Regional Development Fund