Issue 7, 2013

Roughening of Pt nanoparticles induced by surface-oxide formation

Abstract

Using density functional theory (DFT) and thermodynamic considerations we studied the equilibrium shape of Pt nanoparticles (NPs) under electrochemical conditions. We found that at very high oxygen coverage, obtained at high electrode potentials, the experimentally-observed tetrahexahedral (THH) NPs consist of high-index (520) faces. Since high-index surfaces often show higher (electro-)chemical activity in comparison to their close-packed counterparts, the THH NPs can be promising candidates for various (electro-)catalytic applications.

Graphical abstract: Roughening of Pt nanoparticles induced by surface-oxide formation

Article information

Article type
Communication
Submitted
28 Nov 2012
Accepted
11 Dec 2012
First published
12 Dec 2012

Phys. Chem. Chem. Phys., 2013,15, 2268-2272

Roughening of Pt nanoparticles induced by surface-oxide formation

T. Zhu, E. J. M. Hensen, R. A. van Santen, N. Tian, S. Sun, P. Kaghazchi and T. Jacob, Phys. Chem. Chem. Phys., 2013, 15, 2268 DOI: 10.1039/C2CP44252C

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