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Issue 3, 2010
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Nanoparticle stability from the nano to the meso interval

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Nanoparticles are the cornerstone of nanotechnology. Their crystal structure and relation to shape are still open problems despite a lot of advances in the field. The classical theory of nanoparticle stability predicts that for sizes <1.5–2 nm the icosahedral structure should be the most stable, then between around 2–5 nm, the decahedral shape should be the most stable. Beyond that, face-centered-cubic (FCC) structures will be the predominant phase. However, in the experimental side, icosahedral (Ih) and decahedral (Dh) particles can be observed much beyond the 5 nm limit. In fact, it is possible to find Ih and Dh particles even in the mesoscopic range. Conversely, it is possible to find FCC particles with a size <1.5 nm. In this paper we review a number of the mechanisms proposed in the literature that allow the stabilization of nanoparticles. Some of the mechanisms are very interrelated and it becomes difficult to distinguish between them.

Graphical abstract: Nanoparticle stability from the nano to the meso interval

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Publication details

The article was received on 01 Oct 2009, accepted on 05 Nov 2009 and first published on 07 Dec 2009

Article type: Review Article
DOI: 10.1039/B9NR00287A
Nanoscale, 2010,2, 335-342

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    Nanoparticle stability from the nano to the meso interval

    A. Mayoral, H. Barron, R. Estrada-Salas, A. Vazquez-Duran and M. José-Yacamán, Nanoscale, 2010, 2, 335
    DOI: 10.1039/B9NR00287A

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