Activation Energies for Thermal Desorption of Hydroxyl Radicals from Single-Crystal Platinum(111) and Polycrystalline Platinum Foil Surfaces

David S.Y. Hsu, Ming-Chang Lin, Mark A. Hoffbauer*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Apparent desorption energies were obtained for OH radicals formed in the associative reaction of chemisorbed 0 and H atoms on single-crystal Pt(111) and polycrystalline Pt foil surfaces by using the laser-induced fluorescence (LIF) technique coupled to an UHV surface science apparatus. As the reactant O/H gas mixture ratio is decreased from 10 to 0.1, the OH desorption energies increase from 27 to 36 kcal/mol for the Pt(111) crystal and from 32 to 42 kcal/mol for the polycrystalline Pt foil.

Original languageEnglish
Pages (from-to)302-304
Number of pages3
JournalLangmuir
Volume2
Issue number3
DOIs
StatePublished - 1 Jan 1986

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