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

被引：21

作者：

Zhdanov, Vladimir P. ^{[1
,2
]}

Schweinberger, Florian F. ^{[3
,4
]}

Heiz, Ueli ^{[3
,4
]}

Langhammer, Christoph ^{[1
]}

机构：

[1] Chalmers, Dept Appl Phys, S-41296 Gothenburg, Sweden

[2] Russian Acad Sci, Boreskov Inst Catalysis, Novosibirsk 630090, Russia

[3] Tech Univ Munich, Catalysis Res Ctr, D-85748 Garching, Germany

[4] Tech Univ Munich, Dept Chem, D-85748 Garching, Germany

来源：

CHEMICAL PHYSICS LETTERS | 2015年 / 631卷

基金：

瑞典研究理事会;

关键词：

SINTERING RESISTANCE; METAL NANOPARTICLES; CATALYSTS; PARTICLES; KINETICS; ALUMINA; GROWTH; AU;

D O I：

10.1016/j.cplett.2015.04.037

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：21 / 25

页数：5

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