Potassium-oxygen interactions on a Ru(001) surface

Journal Article · Thu Oct 01 00:00:00 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), Vol. 8:10; ISSN 0743-7463
• Country of Publication: United States
• Language: English

Related Subjects

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