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- W1989910161 abstract "The energetics of O(2) adsorption and dissociation are discussed in terms of 6D potential energy surface based on spin-polarized density functional theory calculations that predict O(2) access to both molecular and dissociative chemisorption wells with no obvious barriers. Specifically, a molecularly chemisorbed state in a top-bridge-top (t-b-t) configuration is identified, and a no barrier dissociative adsorption over hollow site with the O-O axis spanning toward the bridge sites (b-h-b) is noted. Both the translation of O(2) from the molecular state (t-b-t) to the dissociated state on bridge and the direct nonactivated dissociative adsorption over the hollow sites (b-h-b) are likely pathways for O(2) dissociation. Interestingly, such O(2) reaction pathways are consistent with the density functional theory calculations and molecular beam experiments on O(2) dissociative adsorption on Pt(100)-(1 x 1). Modification of the electronic structure of the Pt surface due to the Fe substrate relevant for O(2) reactivity is discussed in an effort to provide insight into the experimentally discovered significant enhancement in electrocatalytic activity of Pt-Fe alloys for fuel cell applications." @default.
- W1989910161 created "2016-06-24" @default.
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- W1989910161 date "2009-07-09" @default.
- W1989910161 modified "2023-10-18" @default.
- W1989910161 title "Spin-Polarized Density Functional Theory Study of Reactivity of Diatomic Molecule on Bimetallic System: The Case of O<sub>2</sub> Dissociative Adsorption on Pt Monolayer on Fe(001)" @default.
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- W1989910161 doi "https://doi.org/10.1021/jp9030267" @default.
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