title: 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.
authors.affiliation: Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, The Netherlands.
authors.forename: Tianwei
authors.initials: T
authors.lastname: Zhu
authors.forename: Emiel J M
authors.initials: EJ
authors.lastname: Hensen
authors.forename: Rutger A
authors.initials: RA
authors.lastname: van Santen
authors.forename: Na
authors.initials: N
authors.lastname: Tian
authors.forename: Shi-Gang
authors.initials: SG
authors.lastname: Sun
authors.forename: Payam
authors.initials: P
authors.lastname: Kaghazchi
authors.forename: Timo
authors.initials: T
authors.lastname: Jacob