| DOI | Trouver le DOI : https://doi.org/10.1039/C2NR11558A |
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| Auteur | Rechercher : Lam, Edmond1; Rechercher : Hrapovic, Sabahudin1; Rechercher : Majid, Ehsan1; Rechercher : Chong, Jonathan H.1; Rechercher : Luong, John H. T.1 |
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| Affiliation | - Conseil national de recherches du Canada. Institut de recherche en biotechnologie du CNRC
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| Format | Texte, Article |
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| Sujet | 4-aminophenols; 4-Nitrophenol; Ammonium chloride; Au nanoparticle; Average diameter; Crystalline cellulose; Gold Nanoparticles; Hybrid inorganic-organic; Nanocrystalline cellulose; Product isolation |
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| Résumé | A novel nanocomposite was prepared by deposition of carbonate-stabilized Au nanoparticles (AuNPs) onto the surface of poly(diallyldimethyl ammonium chloride) (PDDA)-coated carboxylated nanocrystalline cellulose (NCC). The hybrid material possessed AuNPs (1.45% by weight) with an average diameter of 2.95 ± 0.06 nm. The catalytic activity of AuNP/PDDA/NCC for reducing 4-nitrophenol to 4-aminophenol was compared to other Au-supported composites. An activation energy of 69.2 kJ mol⁻¹ was obtained for the reaction. Indeed, the reaction rate constant k of (5.1 ± 0.2) x 10⁻³ s⁻¹ was comparable to the benchmark literature value obtained using AuNPs (<5 nm in diameter) decorated on a network of crystalline cellulose fibers. Our strategy promotes the use of natural resources to prepare reusable hybrid inorganic–organic materials for important reactions with facilitated product isolation/purification. |
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| Date de publication | 2012-01-05 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro du CNRC | NRCC 53402 |
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| Numéro NPARC | 21268453 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 7686bb94-36a1-49c1-9730-0bccf0d597e2 |
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| Enregistrement créé | 2013-07-24 |
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| Enregistrement modifié | 2020-04-21 |
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