Ostwald ripening of supported Pt nanoclusters with initial size-selected distributions

Vladimir P. Zhdanov, Florian F. Schweinberger, Ueli Heiz, Christoph Langhammer

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

The use of a laser ablation cluster source made it recently possible to study Ostwald ripening of supported Pt nanoclusters with atomic control of the initial size distributions, such as Pt68 or Pt22 + Pt68 (K. Wettergren et al., Nano Lett. (2014)). Monodispersed clusters were found to be more stable compared to the bimodal ones and to those with wide polydisperse initial size distribution. To clarify the results of the experiments, we present here the corresponding kinetic Monte Carlo simulations of Ostwald ripening with emphasis on the role of the initial size distribution with control at the atomic level.

Original languageEnglish
Pages (from-to)21-25
Number of pages5
JournalChemical Physics Letters
Volume631-632
DOIs
StatePublished - 1 Jul 2015
Externally publishedYes

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