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The oxidation behavior of metallic nanoparticles is investigated in respect to ligand influences. The nanoparticle oxidation is modeled in a shell-core approach. The shell represents oxidation of surface atoms modeled by Johnson–Mehl–Avrami–Kolmogorov equations for isothermal growth. The oxidation of the nanoparticle core is described by a model introduced by Cabrera and Mott [Rep. Prog. Phys. 12, 163 (1949)]. In order to investigate the ligand influence one single parameter is introduced for both surface and bulk oxidation. The growth of the oxide layer is simulated in a level set framework via finite element methods. The theoretical results are compared to experimental findings of Kanninen etal [J. Coll. Interf. Sci. 318, 88 (2008)].
Published in:
Applied Physics Letters
(Volume:96
,
Issue:
9
)
Date of Publication: Mar 2010
- Page(s):
- 093111 - 093111-3
- ISSN :
- 0003-6951
- Digital Object Identifier :
- 10.1063/1.3353957
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 08 March 2010
- Issue Date :
- Mar 2010
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