title: Exploring the phase space of time of flight mass selected Pt(x)Y nanoparticles.
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.
authors.affiliation: Center for Individual Particle Functionality (CINF), Department of Physics, DTU, DK-2800 Kgs. Lyngby, Denmark. ibchork@fysik.dtu.dk.
authors.forename: Federico
authors.initials: F
authors.lastname: Masini
authors.forename: Patricia
authors.initials: P
authors.lastname: Hernández-Fernández
authors.forename: Davide
authors.initials: D
authors.lastname: Deiana
authors.forename: Christian Ejersbo
authors.initials: CE
authors.lastname: Strebel
authors.forename: David Norman
authors.initials: DN
authors.lastname: McCarthy
authors.forename: Anders
authors.initials: A
authors.lastname: Bodin
authors.forename: Paolo
authors.initials: P
authors.lastname: Malacrida
authors.forename: Ifan
authors.initials: I
authors.lastname: Stephens
authors.forename: Ib
authors.initials: I
authors.lastname: Chorkendorff