A1 Refereed original research article in a scientific journal
Core level spectroscopy of MoS2
Authors: Mattila S, Leiro JA, Heinonen M, Laiho T
Publisher: ELSEVIER SCIENCE BV
Publication year: 2006
Journal:: Surface Science
Journal name in source: SURFACE SCIENCE
Journal acronym: SURF SCI
Volume: 600
Issue: 24
First page : 5168
Last page: 5175
Number of pages: 8
ISSN: 0039-6028
DOI: https://doi.org/10.1016/j.susc.2006.08.038
Abstract
X-ray photoelectron spectroscopy has been used to study mineral molybdenite, MoS2. The fitted core level spectra of sulphur 2p and molybdenum 3d states reveal several photon energy sensitive components. The high binding energy component in both spectra is proposed to originate from the uppermost sulphur or molybdenum atoms of an S-Mo-S sandwich layer of the hexagonal structure, respectively. The other features are suggested to be caused by the edge structures formed during the sample cleavage. The edge facets have much stronger chemical properties than the basal planes and they are known as the active sites of MoS2 when it is used as a catalyst. The spectral features and the effect of the structure of UHV cleaved MoS2 on them are discussed. (c) 2006 Elsevier B.V. All rights reserved.
X-ray photoelectron spectroscopy has been used to study mineral molybdenite, MoS2. The fitted core level spectra of sulphur 2p and molybdenum 3d states reveal several photon energy sensitive components. The high binding energy component in both spectra is proposed to originate from the uppermost sulphur or molybdenum atoms of an S-Mo-S sandwich layer of the hexagonal structure, respectively. The other features are suggested to be caused by the edge structures formed during the sample cleavage. The edge facets have much stronger chemical properties than the basal planes and they are known as the active sites of MoS2 when it is used as a catalyst. The spectral features and the effect of the structure of UHV cleaved MoS2 on them are discussed. (c) 2006 Elsevier B.V. All rights reserved.
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