Potassium-oxygen interactions on a Ru(001) surface

Journal Article · Thu Oct 01 04:00:00 EDT 1992 · Langmuir; (United States)

DOI:https://doi.org/10.1021/la00046a019· OSTI ID:5425548

Hrbek, J; Shek, M L; Xu, G Q ^[1]; Sham, T K ^[2]

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1. Brookhaven National Lab., Upton, NY (United States)
2. Univ. of Western Ontario, London, Ontario (Canada)

The interaction of potassium with oxygen has been examined using synchrotron-based photoemission and NEXAFS, thermal desorption, work function measurements, and isotope exchange. Potassium coverages on Ru(001) surface ranging from monolayer to multilayer were investigated. Oxygen coadsorbed with potassium at 80 K forms a potassium-dioxygen complex, where both peroxide and superoxide ions were identified. The complex has high thermal stability on the Ru(001) surface, decomposing and desorbing at T > 900 K. 52 refs., 14 figs., 2 tabs.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5425548
• Journal Information: Langmuir; (United States), Journal Name: Langmuir; (United States) Vol. 8:10; ISSN LANGD5; ISSN 0743-7463
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADSORPTION
ALKALI METALS
CHEMICAL REACTIONS
COMPLEXES
ELEMENTS
METALS
NONMETALS
OXIDATION
OXYGEN
PLATINUM METALS
POTASSIUM
RUTHENIUM
SORPTION
SURFACE PROPERTIES
TRANSITION ELEMENTS