uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Adsorption and photolysis of trimethyl acetate on TiO2(B)(001) studied with synchrotron radiation core level photoelectron spectroscopy
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and Condensed Matter Physics.
Lund Univ, Dept Synchrotron Radiat Res, POB 118, SE-22100 Lund, Sweden..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and Condensed Matter Physics.
NTNU Norwegian Univ Sci & Technol, Dept Phys, NO-7491 Trondheim, Norway..
Show others and affiliations
2017 (English)In: Surface Science, ISSN 0039-6028, E-ISSN 1879-2758, Vol. 666, p. 104-112Article in journal (Refereed) Published
Abstract [en]

We present a synchrotron radiation photoelectron spectroscopy study of the adsorption and photooxidation of trimethyl acetate (TMA) on TiO2(B)(001). The TiO2(B)(001) substrate was realized in the form of 2nm thick film on Au(111). The TMA species adopt the bidentate bonding configuration, as expected for carboxylic acids on TiO2, but cannot coordinate to all surface Ti ions due to steric hindrance. The proposed arrangement of the TMA species thus allows for the formation of an overlayer with a (2 x 1) periodicity. The thermal stability is found to be comparable to that on rutile (110) although the results indicate differences in the threshold for the TMA+H -> TMAA reaction. Photolysis using both ultraviolet (UV) light and soft x-ray synchrotron radiation (SR) was studied and compared to the reaction on the reduced ruffle (110) surface. A kinetic analysis suggests that the photoreaction rate for TMA on the TiO2(B) thin film is initially two times faster than that on the reduced rutile TiO2(110) surface. The higher activity of the TiO2(B) film is assigned to a reduced influence from surplus electrons associated with reduced Ti species, thereby decreasing the probability for hole-annihilation at high TMA coverage.

Place, publisher, year, edition, pages
2017. Vol. 666, p. 104-112
Keywords [en]
Titanium dioxide, Photocatalysis, Photoelectron spectroscopy, TiO2(B), Adsorption, Carboxylic acids
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:uu:diva-340898DOI: 10.1016/j.susc.2017.09.007ISI: 000413877900014OAI: oai:DiVA.org:uu-340898DiVA, id: diva2:1180915
Funder
Swedish Energy Agency, 36642-1Carl Tryggers foundation , CTS 12:417The Crafoord Foundation, 20060599Available from: 2018-02-07 Created: 2018-02-07 Last updated: 2018-02-07Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Authority records BETA

Sandell, AndersRagazzon, Davide

Search in DiVA

By author/editor
Sandell, AndersRagazzon, Davide
By organisation
Molecular and Condensed Matter Physics
In the same journal
Surface Science
Condensed Matter Physics

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 0 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf