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Updated: May 30, 2026

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
Published on: March 29, 2016
Hydronium adsorption on OOH precovered Pt(111) surface: effects of electrode potential
Do Ngoc Son1, Bach Thanh Cong, Hideaki Kasai
1Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
Abstract:
Using the Density Functional Theory-based total energy calculations, the hydronium adsorption on the OOH precovered Pt(111) surface is studied. The electrode potential is modeled by varying the electron affinity of the reduction center [OOH + H3O(H2O)]+. Two possible structures of this reduction center on the Pt surface are HOOH +2H2O and 2(OH)+2H2O. Evidently, the dissociation of HOOH into 2(OH) can be accomplished by changing the electrode potential to the higher value by 0.16 V. The activation energy for the dissociation is approximately 0.1 eV. The optimized structures are also obtained.
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