Roughening of Pt nanoparticles induced by surface-oxide formation

Literature Information

Publication Date 2012-12-12
DOI 10.1039/C2CP44252C
Impact Factor 3.676
Authors

Emiel J. M. Hensen, Rutger A. van Santen, Na Tian, Shi-Gang Sun, Payam Kaghazchi, Timo Jacob


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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.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
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