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Chemical bonding in carbide MXene nanosheets
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-0317-0190
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering.
2018 (English)In: Journal of Electron Spectroscopy and Related Phenomena, ISSN 0368-2048, E-ISSN 1873-2526, Vol. 224, p. 27-32Article in journal (Refereed) Published
Abstract [en]

tThe chemical bonding in the carbide core and the surface chemistry in a new group of transition-metalcarbides Tin+1Cn-Tx(n = 1,2) called MXenes have been investigated by surface-sensitive valence bandX-ray photoelectron spectroscopy. Changes in band structures of stacked nano sheets of different thick-nesses are analyzed in connection to known hybridization regions of TiC and TiO2that affect elastic andtransport properties. By employing high excitation energy, the photoelectron cross-section for the C 2s– Ti 3d hybridization region at the bottom of the valence band is enhanced. As shown in this work, theO 2p and F 2p bands strongly depend both on the bond lengths to the surface groups and the adsorptionsites. The effect of surface oxidation and Ar+sputtering on the electronic structure is also discussed.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 224, p. 27-32
Keyword [en]
MXene, 2D materials, Valence band, X-ray photoelecton spectroscopy, XPS, Chemical bonding, Termination species
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-145690DOI: 10.1016/j.elspec.2017.09.006Scopus ID: 2-s2.0-85030792688OAI: oai:DiVA.org:liu-145690DiVA, id: diva2:1190923
Available from: 2018-03-16 Created: 2018-03-16 Last updated: 2018-03-22Bibliographically approved

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The full text will be freely available from 2019-09-27 08:17
Available from 2019-09-27 08:17

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Publisher's full textScopusLink to pre-print at arXiv

Authority records BETA

Magnuson, MartinHalim, JosephNäslund, Lars-Åke

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Magnuson, MartinHalim, JosephNäslund, Lars-Åke
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