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

Direct link
Water Adsorption on TiOx Thin Films Grown on Au(111)
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and condensed matter physics.
Show others and affiliations
2015 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 119, no 12, 6660-6669 p.Article in journal (Refereed) Published
Abstract [en]

High resolution photoelectron spectroscopy has been used to investigate water adsorption on four different TiOx ultrathin film structures, grown on Au(111) by chemical vapor deposition. Two of the structures are reduced TiOx single layer phases, forming a honeycomb (HC) and a pinwheel (PW) structure, respectively. The other two phases have TiO2 stoichiometry, one in the form of islands and one in the form of a TiO2(B)(001) extended layer. Partial water dissociation is observed for all phases but the HC phase, and the dissociation propensity and adsorbate thermal stability structure result from interplay between the atomic structure of the particular TiOx phase and defects formed in the preparation. The dissociation on the TiO2(B) film is mainly related to different types of defect sites. The TiO2 islands, interpreted as surface reconstructed rutile TiO2(100), generate the highest amount of hydroxyls with a behavior consistent with reconstruction into a mixed (100) and (110) termination. Water dissociation on the PW layer can be assigned to particular sites of the structure and it stands out by leading to oxidation of Ti species.

Place, publisher, year, edition, pages
2015. Vol. 119, no 12, 6660-6669 p.
National Category
Condensed Matter Physics
URN: urn:nbn:se:uu:diva-252223DOI: 10.1021/acs.jpcc.5b00561ISI: 000351970800021OAI: oai:DiVA.org:uu-252223DiVA: diva2:810133
Available from: 2015-05-06 Created: 2015-05-04 Last updated: 2015-05-06Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Ragazzon, DavideSandell, Anders
By organisation
Molecular and condensed matter physics
In the same journal
The Journal of Physical Chemistry C
Condensed Matter Physics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 441 hits
ReferencesLink to record
Permanent link

Direct link