Supported core/shell bimetallic nanoparticles synthesis by atomic layer deposition

M.J. Weber, A.J.M. Mackus, M.A. Verheijen, C. Marel, van der, W.M.M. Kessels

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

112 Citaten (Scopus)
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Samenvatting

A continuing goal in catalysis research is to engineer the composition and structure of noble metal nanomaterials in order to precisely tune their catalytic activity. Herein, we present proof-of-concept results on the synthesis of supported bimetallic core/shell nanoparticles entirely by atomic layer deposition (ALD). ALD is a novel and scalable method, which can be used to prepare noble-metal catalysts on high surface area support materials. Two properties of ALD of noble metals, namely the Volmer–Weber growth and surface-selectivity, are exploited to decouple primary island growth from subsequent selective shell growth. This concept is applied to synthesize highly dispersed Pd/Pt and Pt/Pd nanoparticles. In-depth characterization of the nanoparticles provides evidence for the core/shell morphology and for the narrow size distribution. The self-limiting nature of the ALD process allows for independent control of the core and shell dimensions, opening up unique possibilities for precise engineering of metallic nanoparticle properties.
Originele taal-2Engels
Pagina's (van-tot)2973-2977
Aantal pagina's5
TijdschriftChemistry of Materials
Volume24
Nummer van het tijdschrift15
DOI's
StatusGepubliceerd - 2012

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