High coverages and subsurface penetration of oxygen on Ru(001)

Journal Article · Wed Nov 27 23:00:00 EST 1991 · Journal of Physical Chemistry; (United States)

DOI:https://doi.org/10.1021/j100177a102· OSTI ID:6837304

Malik, I J; Hrbek, J ^[1]

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1. Brookhaven National Lab., Upton, NY (United States)

Interaction of NO[sub 2], an effective source of atomic oxygen, with a Ru(001) single crystal face was studied at substrate temperatures 400-800 K. The authors present thermal desorption spectroscopy data indicating that up to 40 oxygen monolayers can be accommodated within the surface and subsurface regions. Once oxygen penetrates below the surface, fragments containing Ru atoms (RuO[sub x], x = 0-3) are detected during desorption and O[sub 2] desorbs with near-zero-order kinetics. The authors briefly discuss these experimental results in terms of a model for subsurface penetration of oxygen on transition metals.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6837304
• Journal Information: Journal of Physical Chemistry; (United States), Journal Name: Journal of Physical Chemistry; (United States) Vol. 95:24; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISORPTION
DATA
DESORPTION
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
METALS
MILLER INDICES
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PLATINUM METALS
RUTHENIUM
SEPARATION PROCESSES
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
TRANSITION ELEMENTS