High Sintering Resistance of Size-Selected Platinum Cluster Catalysts by Suppressed Ostwald Ripening
Artikel i vetenskaplig tidskrift, 2014

Employing rationally designed model systems with precise atom-by-atom particle size control, we demonstrate by means of combining noninvasive in situ indirect nano-plasmonic sensing and ex situ scanning transmission electron microscopy that monomodal size-selected platinum cluster catalysts on different supports exhibit remarkable intrinsic sintering resistance even under reaction conditions. The observed stability is related to suppression of Oftwald ripening by elimination of its main driving force via size-selection. This study thus constitutes a general blueprint for the rational design of sintering resistant catalyst systems and for efficient experimental strategies to determine sintering mechanisms. Moreover, this is the first systematic experimental investigation of sintering processes in nanoparticle systems with an initially perfectly monomodal size distribution under ambient conditions.

Ostwald ripening

sintering resistance



Size-selected clusters

indirect nanoplasmonic sensing


Kristina Wettergren

Chalmers, Teknisk fysik, Kemisk fysik

F. F. Schweinberger

Technische Universität München

D. Deiana

Danmarks Tekniske Universitet (DTU)

C. J. Ridge

Technische Universität München

A. S. Crampton

Technische Universität München

M. D. Rotzer

Technische Universität München

T. W. Hansen

Danmarks Tekniske Universitet (DTU)

V. P. Zhdanov

Chalmers, Fysik

Russian Academy of Sciences

U. Heiz

Technische Universität München

Christoph Langhammer

Chalmers, Teknisk fysik, Kemisk fysik

Nano Letters

1530-6984 (ISSN) 1530-6992 (eISSN)

Vol. 14 10 5803-5809


Annan fysik




Mer information

Senast uppdaterat