Adsorption and diffusion property of a hydrogen atom on a Pd 3Ag(111) surface

N. Ozawa, N. B. Arboleda, H. Nakanishi, N. Shimoji, H. Kasai

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

The behavior of a hydrogen atom on a Pd3Ag(111) surface is investigated by calculating the quantum states of the hydrogen atom via the first principles calculation methods. The calculation results show that the ground state wave function for the motion of hydrogen atom is localized on the fee hollow site surrounded by three Pd atoms. Moreover, activation energies for the diffusion of the hydrogen atom on the whole Pd3Ag(111) surface are estimated as 394 and 520 meV via quantum and classical methods, respectively. Compared with our previous study on the behavior of hydrogen atom on the Pd(111) surface, the adsorption energy of hydrogen atom becomes smaller, while the activation energy becomes larger as a result of Ag alloying.

Original languageEnglish
Pages (from-to)1108-1112
Number of pages5
JournalSurface and Interface Analysis
Volume40
Issue number6-7
DOIs
Publication statusPublished - 2008 Jun
Externally publishedYes

Keywords

  • Density functional calculations
  • Diffusion
  • Hydrogen atom
  • Metallic surfaces
  • Quantum states

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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