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

doi:10.1021/la00069a008

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

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	302-304
Number of pages	3
Journal	Langmuir
Volume	2
Issue number	3
DOIs	https://doi.org/10.1021/la00069a008
State	Published - 1 Jan 1986

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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.",

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AU - Hsu, David S.Y.

AU - Lin, Ming-Chang

AU - Hoffbauer, Mark A.

PY - 1986/1/1

Y1 - 1986/1/1

N2 - 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.

AB - 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.

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ER -

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

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