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Physical and chemical properties of high density atomic oxygen overlayers under ultrahigh vacuum conditions: (1×1)-O/Rh(111) (2000)

Gibson, K. D. ; Viste, Mark ; Sanchez, Errol ; [et al.]

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 112 (2000), S. 2470-2478

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ISSN: 1089-7690

Source: AIP Digital Archive

Topics: Physics , Chemistry and Pharmacology

Notes: In this paper, we elaborate on our previous communication of high coverages of oxygen on Rh(111) [J. Chem. Phys. 110, 2757 (1999)]. When dosing with O2, half of a monolayer of O is adsorbed. Higher coverages can be achieved when exposing the surface to O atoms. As the quantity of adsorbed O increases from a half to a full monolayer, the overlayer structure undergoes several distinct phase changes. At a full monolayer, the (1×1)-O structure is stable at surface temperatures less than ∼400 K. Continued dosing with O atoms results in the rapid migration of O into the bulk. We also report on the chemical reactivity of this densely oxygen-covered surface with CO, H2, and propene. © 2000 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.480890

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