Surfactant-Free Colloidal Syntheses of Gold-Based Nanomaterials in Alkaline Water and Mono-alcohol Mixtures
Quinson, Jonathan (Aarhus University)
Aalling-Frederiksen, Olivia (Copenhagen University)
Dacayan, Waynah L. (Technical University of Denmark)
Bjerregaard, Joachim D. (Copenhagen University)
Jensen, Kim D. (Copenhagen University)
Jørgensen, Mads Ry Vogel (Lund University)
Kantor, Innokenty (The Technical University of Denmark)
Sørensen, Daniel R. (Lund University)
Theil Kuhn, Luise (Technical University of Denmark)
Johnson, Matthew S. (Copenhagen University)
Escudero-Escribano, María (Institut Català de Nanociència i Nanotecnologia)
Simonsen, Søren B. (Technical University of Denmark)
Jensen, Kirsten M. Ø. (Copenhagen University)

Fecha:	2023
Resumen:	Gold nanoparticles (Au NPs) and gold-based nanomaterials combine unique properties relevant for medicine, imaging, optics, sensing, catalysis, and energy conversion. While the Turkevich-Frens and Brust-Schiffrin methods remain the state-of-the-art colloidal syntheses of Au NPs, there is a need for more sustainable and tractable synthetic strategies leading to new model systems. In particular, stabilizers are almost systematically used in colloidal syntheses, but they can be detrimental for fundamental and applied studies. Here, a surfactant-free synthesis of size-controlled colloidal Au NPs stable for months is achieved by the simple reduction of HAuCl at room temperature in alkaline solutions of low-viscosity mono-alcohols such as ethanol or methanol and water, without the need for any other additives. Palladium (Pd) and bimetallic AuPd NPs, nanocomposites and multimetallic samples, are also obtained and are readily active (electro)catalysts. The multiple benefits over the state-of-the-art syntheses that this simple synthesis bears for fundamental and applied research are highlighted.
Ayudas:	European Commission 840523
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Publicado en:	Chemistry of materials, Vol. 35, Issue 5 (February 2023) , p. 2173-2190, ISSN 1520-5002

DOI: 10.1021/acs.chemmater.3c00090
PMID: 36936178

18 p, 7.1 MB

El registro aparece en las colecciones:
Documentos de investigación > Documentos de los grupos de investigación de la UAB > Centros y grupos de investigación (producción científica) > Ciencias > Institut Català de Nanociència i Nanotecnologia (ICN2)
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