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Low-Temperature CO ...
Low-Temperature CO Oxidation on Ni(111) and on a Au/Ni(111) Surface Alloy
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Knudsen, Jan (author)
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Merte, Lindsay R. (author)
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Peng, Guowen (author)
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Vang, Ronnie T. (author)
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- Resta, Andrea (author)
- Lund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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Laegsgaard, Erik (author)
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- Andersen, Jesper N (author)
- Lund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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Mavrikakis, Manos (author)
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Besenbacher, Flemming (author)
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(creator_code:org_t)
- 2010-07-19
- 2010
- English.
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In: ACS Nano. - : American Chemical Society (ACS). - 1936-086X .- 1936-0851. ; 4:8, s. 4380-4387
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http://dx.doi.org/10...
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Abstract
Subject headings
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- From an interplay between scanning tunneling microscopy, temperature programmed desorption, X-ray photoelectron spectroscopy, and density functional theory calculations we have studied low-temperature CO oxidation on Au/Ni(111) surface alloys and on Ni(111). We show that an oxide is formed on both the Ni(111) and the Au/Ni(111) surfaces when oxygen is dosed at 100 K, and that CO can be oxidized at 100 K on both of these surfaces in the presence of weakly bound oxygen. We suggest that low-temperature CO oxidation can be rationalized by CO oxidation on O-2-saturated NiO(111) surfaces, and show that the main effect of Au in the Au/Ni(111) surface alloy is to block the formation of carbonate and thereby increase the low-temperature CO2 production.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology -- Nano-technology (hsv//eng)
Keyword
- X-ray
- photoelectron spectroscopy
- scanning tunneling microscopy
- low-temperature oxidation
- AuNi surface alloy
- low-temperature CO oxidation
- nickel oxide
Publication and Content Type
- art (subject category)
- ref (subject category)
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