Exploring the phase space of time of flight mass selected PtxY nanoparticles.

Federico Masini, Patricia Hernandez-Fernandez, Davide Deiana, Christian Ejersbo Strebel, David Norman McCarthy, Anders Bodin, Paolo Malacrida, Ifan Stephens, Ib Chorkendorff

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Abstract

Mass-selected nanoparticles can be conveniently produced using magnetron sputtering and aggregation techniques. However, numerous pitfalls can compromise the quality of the samples, e.g. double or triple mass production, dendritic structure formation or unpredicted particle composition. We stress the importance of transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and ion scattering spectroscopy (ISS) for verifying the morphology, size distribution and chemical composition of the nanoparticles. Furthermore, we correlate the morphology and the composition of the PtxY nanoparticles with their catalytic properties for the oxygen reduction reaction. Finally, we propose a completely general diagnostic method, which allows us to minimize the occurrence of undesired masses.
Original languageEnglish
JournalPhysical Chemistry Chemical Physics
Volume16
Issue number48
Pages (from-to)26506-26513
Number of pages8
ISSN1463-9076
DOIs
Publication statusPublished - 2014

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