dc.contributor.author | Raaen, Steinar | |
dc.contributor.author | Hunvik, Kristoffer William Bø | |
dc.date.accessioned | 2020-06-25T07:38:22Z | |
dc.date.available | 2020-06-25T07:38:22Z | |
dc.date.created | 2020-06-23T08:12:05Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Applied Surface Science. 2020, 528 . | en_US |
dc.identifier.issn | 0169-4332 | |
dc.identifier.uri | https://hdl.handle.net/11250/2659406 | |
dc.description.abstract | Adsorption of methane has been studied in ultrahigh vacuum environments on single crystalline as well as on Ni nano-particles on mica substrates. Experimental techniques have been X-ray and ultraviolet photoelectron spectroscopy (XPS and UPS) and temperature programmed desorption spectroscopy (TPD). In accordance with previous observations only physisorption of is observed on pure nickel at temperatures below 130 K for exposures in the high vacuum regime. TPD in the temperature range from 200 to 300 K shows that chemisorption of methane takes place when the sample work function is lowered by about 0.7 eV by a surface treatment, which presumably exposes the surface to atomic hydrogen. The lowered work function enables charge transfer from the Ni conduction band to the methane affinity level which subsequent leads to dissociative chemisorption. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Non-activated adsorption of methane on nickel surfaces induced by reduced work function | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.pagenumber | 6 | en_US |
dc.source.volume | 528 | en_US |
dc.source.journal | Applied Surface Science | en_US |
dc.identifier.doi | 10.1016/j.apsusc.2020.146955 | |
dc.identifier.cristin | 1816685 | |
dc.description.localcode | This is an open access article distributed under the terms of the Creative Commons CC-BY license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |