An insight : studies of atomic and molecular adsorption on Co(0001)

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Habermehl-Cwirzen, Karin
dc.date.accessioned 2012-02-17T07:35:16Z
dc.date.available 2012-02-17T07:35:16Z
dc.date.issued 2006-03-17
dc.identifier.isbn 951-22-8088-4
dc.identifier.issn 1455-1802
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/2679
dc.description.abstract This thesis deals with the adsorption of selected atoms and molecules on a well defined single crystal cobalt surface. X-ray photoelectron spectroscopy has been used to identify different adsorption sites and coverages. Work function measurements have been utilized to monitor the strength of the interaction between adsorbed species and cobalt substrate. Thermal desorption spectroscopy has identified the desorption products and has given information on the activation energies for desorption. By means of low energy electron diffraction measurements the adsorbate unit cell and, by utilizing I-V curve analysis, the atomic positions have been determined. Adsorption processes are important, e.g. in catalytic reactions, therefore studying adsorption and desorption of atoms and molecules on a well-defined surface can give useful insight information on reactions and how these reactions might be influenced. We have studied a selection of important atoms and molecules on a Co(0001) surface. Deuterium has been extensively studied as single adsorbate as well as in coadsorption with carbon monoxide and sulfur. Methanol adsorption and O-H bond scission has been an important topic of this thesis. Benzene adsorption has been determined at length, as a single component including I-V curve analysis and DFT calculations, as well as coadsorbed with carbon monoxide. Sulfur, a common unwanted component in a variety of processes like, e.g. crude oil refinery, was investigated as single adsorbate as well as coadsorbed with carbon monoxide. en
dc.format.extent 41, [52]
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Helsinki University of Technology en
dc.publisher Teknillinen korkeakoulu fi
dc.relation.ispartofseries Dissertation / Laboratory of Physics, Helsinki University of Technology en
dc.relation.ispartofseries 138 en
dc.relation.haspart K. M. E. Habermehl-Cwirzen, K. Kauraala and J. Lahtinen, Hydrogen on cobalt: the effects of carbon monoxide and sulphur additives on the D<sub>2</sub>/Co(0001) system, Physica Scripta T108 (2004) 28-32. [article1.pdf] © 2004 The Royal Swedish Academy of Sciences. By permission.
dc.relation.haspart K. Habermehl-Cwirzen, J. Lahtinen and P. Hautojärvi, Methanol on Co(0001): XPS, TDS, WF and LEED results, Surface Science 598 (2005) 128-135. [article2.pdf] © 2005 Elsevier Science. By permission.
dc.relation.haspart K. M. E. Habermehl-Cwirzen, J. Katainen, J. Lahtinen and P. Hautojärvi, An experimental study on adsorption of benzene on Co(0001), Surface Science 507-510 (2002) 57-61. [article3.pdf] © 2002 Elsevier Science. By permission.
dc.relation.haspart K. Pussi, M. Lindroos, J. Katainen, K. Habermehl-Cwirzen, J. Lahtinen and A. P. Seitsonen, The (√7̅ × √7̅ )R19.1°-C<sub>6</sub>H<sub>6</sub> adsorption structure on Co(0001): a combined Tensor LEED and DFT study, Surface Science 572 (2004) 1-10. [article4.pdf] © 2004 Elsevier Science. By permission.
dc.relation.haspart K. Habermehl-Cwirzen, J. Lahtinen and P. Hautojärvi, Coadsorption of CO and C<sub>6</sub>H<sub>6</sub> on Co(0001), Surface Science 584 (2005) 70-76. [article5.pdf] © 2005 Elsevier Science. By permission.
dc.relation.haspart K. Habermehl-Cwirzen and J. Lahtinen, Sulfur poisoning of the CO adsorption on Co(0001), Surface Science 573 (2004) 183-190. [article6.pdf] © 2004 Elsevier Science. By permission.
dc.relation.haspart J. Lahtinen, P. Kantola, S. Jaatinen, K. Habermehl-Cwirzen, P. Salo, J. Vuorinen, M. Lindroos, K. Pussi and A. P. Seitsonen, LEED and DFT investigation on the (2 × 2)-S overlayer on Co(0001), Surface Science 599 (2005) 113-121. [article7.pdf] © 2005 Elsevier Science. By permission.
dc.subject.other Physics en
dc.title An insight : studies of atomic and molecular adsorption on Co(0001) en
dc.type G5 Artikkeliväitöskirja fi
dc.description.version reviewed en
dc.contributor.department Department of Engineering Physics and Mathematics en
dc.contributor.department Teknillisen fysiikan ja matematiikan osasto fi
dc.subject.keyword molecular adsorption en
dc.subject.keyword atomic adsorption en
dc.subject.keyword cobalt en
dc.subject.keyword catalysts en
dc.subject.keyword surfaces en
dc.subject.keyword spectroscopy en
dc.identifier.urn urn:nbn:fi:tkk-006660
dc.type.dcmitype text en
dc.type.ontasot Väitöskirja (artikkeli) fi
dc.type.ontasot Doctoral dissertation (article-based) en
dc.contributor.lab Laboratory of Physics en
dc.contributor.lab Fysiikan laboratorio fi


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