TY - JOUR
T1 - Nanoparticle stability from the nano to the meso interval
AU - Mayoral, Alvaro
AU - Barron, Hector
AU - Estrada-Salas, Ruben
AU - Vazquez-Duran, Alma
AU - José-Yacamán, Miguel
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
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U2 - 10.1039/b9nr00287a
DO - 10.1039/b9nr00287a
M3 - Review article
C2 - 20644815
AN - SCOPUS:77953653212
SN - 2040-3364
VL - 2
SP - 335
EP - 342
JO - Nanoscale
JF - Nanoscale
IS - 3
ER -