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Issue 42, 2015
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Towards optimal seeding for the synthesis of ordered nanoparticle arrays on alumina/Ni3Al(111)

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Abstract

The adsorption and the nucleation of different transition metals (Fe, Co, Ni, Cu, Pd, Ag, and Au) on alumina/Ni3Al(111) have been studied to shed light on the first stages of the synthesis of supported nanoparticles, focusing in particular on the possibility of producing ordered arrays. Affinity for oxygen, atomic radii, electronic properties and kinetics have been taken into account to rationalize the different behavior. In agreement with empirical findings, Pd is confirmed to be the best choice for a highly ordered nucleation following the “dot” superstructure of the alumina, due to a remarkable preference for the corresponding adsorption sites (holes) with respect to others, and for a rather strong binding. Atom by atom nucleation of this material has been studied, for seeds up to 6 atoms that offer a stiff anchoring of nanoparticles to the support.

Graphical abstract: Towards optimal seeding for the synthesis of ordered nanoparticle arrays on alumina/Ni3Al(111)

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Article information


Submitted
17 Jan 2015
Accepted
10 Mar 2015
First published
12 Mar 2015

Phys. Chem. Chem. Phys., 2015,17, 28154-28161
Article type
Paper
Author version available

Towards optimal seeding for the synthesis of ordered nanoparticle arrays on alumina/Ni3Al(111)

J. A. Olmos-Asar, E. Vesselli, A. Baldereschi and M. Peressi, Phys. Chem. Chem. Phys., 2015, 17, 28154
DOI: 10.1039/C5CP00304K

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