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

Vladimir P. Zhdanov (Institutionen för teknisk fysik, Kemisk fysik) ; F. F. Schweinberger ; U. Heiz ; Christoph Langhammer (Institutionen för teknisk fysik, Kemisk fysik)
Chemical Physics Letters (0009-2614). Vol. 631 (2015), p. 21-25.
[Artikel, refereegranskad vetenskaplig]

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 Pt-68 or Pt-22 + Pt-68 (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.



Denna post skapades 2015-06-29.
CPL Pubid: 219002

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Kemisk fysik (1900-2015)

Ämnesområden

Kemisk fysik

Chalmers infrastruktur