Low-Temperature CO Oxidation on Ni(111) and on a Au/Ni(111) Surface Alloy
(2010) In ACS Nano 4(8). p.4380-4387- Abstract
- 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... (More)
- 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. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1674007
- author
- Knudsen, Jan ; Merte, Lindsay R. ; Peng, Guowen ; Vang, Ronnie T. ; Resta, Andrea LU ; Laegsgaard, Erik ; Andersen, Jesper N LU ; Mavrikakis, Manos and Besenbacher, Flemming
- organization
- publishing date
- 2010
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- X-ray, photoelectron spectroscopy, scanning tunneling microscopy, low-temperature oxidation, AuNi surface alloy, low-temperature CO oxidation, nickel oxide
- in
- ACS Nano
- volume
- 4
- issue
- 8
- pages
- 4380 - 4387
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000281052700007
- scopus:78650126934
- pmid:20731424
- ISSN
- 1936-086X
- DOI
- 10.1021/nn101241c
- language
- English
- LU publication?
- yes
- id
- d536b4e8-7311-420b-88d5-a6d07c6547d0 (old id 1674007)
- date added to LUP
- 2016-04-01 09:50:40
- date last changed
- 2022-02-02 03:26:32
@article{d536b4e8-7311-420b-88d5-a6d07c6547d0, abstract = {{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.}}, author = {{Knudsen, Jan and Merte, Lindsay R. and Peng, Guowen and Vang, Ronnie T. and Resta, Andrea and Laegsgaard, Erik and Andersen, Jesper N and Mavrikakis, Manos and Besenbacher, Flemming}}, issn = {{1936-086X}}, keywords = {{X-ray; photoelectron spectroscopy; scanning tunneling microscopy; low-temperature oxidation; AuNi surface alloy; low-temperature CO oxidation; nickel oxide}}, language = {{eng}}, number = {{8}}, pages = {{4380--4387}}, publisher = {{The American Chemical Society (ACS)}}, series = {{ACS Nano}}, title = {{Low-Temperature CO Oxidation on Ni(111) and on a Au/Ni(111) Surface Alloy}}, url = {{http://dx.doi.org/10.1021/nn101241c}}, doi = {{10.1021/nn101241c}}, volume = {{4}}, year = {{2010}}, }