VTechWorks staff will be away for the Thanksgiving holiday beginning at noon on Wednesday, November 27, through Friday, November 29. We will resume normal operations on Monday, December 2. Thank you for your patience.
 

Adsorption of water and carbon monoxide on Cu₂O(111) single crystal surfaces

Simple item page
dc.contributor.authorChristiaen, Anne-Claireen
dc.contributor.committeechairCox, David F.en
dc.contributor.committeememberMarand, Evaen
dc.contributor.committeememberOyama, Shigeo Teden
dc.contributor.departmentChemical Engineeringen
dc.date.accessioned2014-03-14T21:49:29Zen
dc.date.adate2009-11-10en
dc.date.available2014-03-14T21:49:29Zen
dc.date.issued1994-08-04en
dc.date.rdate2009-11-10en
dc.date.sdate2009-11-10en
dc.description.abstractWater and CO adsorptions were studied over the stoichiometric and the oxygen-deficient Cu₂O(111) surfaces, using thermal desorption spectroscopy (TDS), ultraviolet photoelectron spectroscopy (UPS), and X-ray photoelectron spectroscopy (XPS). Water is the only desorbing species detected in TDS and the extent of dissociation is unaffected by the surface condition: ≃ 0.25 monolayers of water dissociate on Cu₂O(111) regardless of surface condition. The local defect environment around oxygen vacancies does not play a significant role in the activity of the Cu₂O(111) surface for the dissociation of water. CO is found to bind molecularly to the surface through the carbon atom and with a heat of adsorption of 22 kcal/mol, higher value than that of CO on Cu₂O(100) (16.7 kcal/mol). This suggests that the local geometry of adsorption sites may play an important role in the way CO binds to Cu₂O surfaces. Electronic changes upon CO adsorption and the higher heat of adsorption indicate an increased σ-donor character for CO, with some π-backbonding interactions. The local defect environment around oxygen vacancies does not appear to affect CO adsorption on Cu₂O(111) surfaces.en
dc.description.degreeMaster of Scienceen
dc.format.extentvi, 79 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-11102009-020324en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-11102009-020324/en
dc.identifier.urihttp://hdl.handle.net/10919/45628en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1994.C575.pdfen
dc.relation.isformatofOCLC# 31594015en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1994.C575en
dc.subject.lcshAdsorptionen
dc.subject.lcshCarbon dioxide -- Absorption and adsorptionen
dc.subject.lcshCopper oxide -- Absorption and adsorptionen
dc.subject.lcshWater -- Absorption and adsorptionen
dc.titleAdsorption of water and carbon monoxide on Cu₂O(111) single crystal surfacesen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineChemical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
LD5655.V855_1994.C575.pdf
Size:
3.5 MB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Masters Theses