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Issue 16, 2012
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Electron tomography and 3D molecular simulations of platinum nanocrystals

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Abstract

This work reports on the morphology of individual platinum nanocrystals with sizes of about 5 nm. By using the electron tomography technique that gives 3D spatial selectivity, access to quantitative information in the real space was obtained. The morphology of individual nanoparticles was characterized using HAADF-STEM tomography and it was shown to be close to a truncated octahedron. Using molecular dynamics simulations, this geometrical shape was found to be the one minimizing the nanocrystal energy. Starting from the tomographic reconstruction, 3D crystallographic representations of the studied Pt nanocrystals were obtained at the nanometer scale, allowing the quantification of the relative amount of the crystallographic facets present on the particle surface.

Graphical abstract: Electron tomography and 3D molecular simulations of platinum nanocrystals

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Supplementary files

Article information


Submitted
24 Apr 2012
Accepted
20 Jun 2012
First published
25 Jun 2012

Nanoscale, 2012,4, 5125-5131
Article type
Paper

Electron tomography and 3D molecular simulations of platinum nanocrystals

I. Florea, A. Demortière, C. Petit, H. Bulou, C. Hirlimann and O. Ersen, Nanoscale, 2012, 4, 5125
DOI: 10.1039/C2NR30990D

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