Experimental evidence for mixed dissociative and molecular adsorption of water on a rutile TiO2(110) surface without oxygen vacancies
(2009) In Physical Review B (Condensed Matter and Materials Physics) 80(23).- Abstract
- We present evidence for mixed molecular and dissociative water adsorption at monolayer coverage on a rutile TiO2(110) surface free from oxygen vacancies using synchrotron radiation photoemission. At monolayer coverage the OH:H2O ratio is close to 0.5 and reducing the coverage by heating yields an increased OH:H2O ratio. At room temperature neither species originating from the monolayer on the defect-free surface can be detected. The OH species of the monolayer hence recombines and leaves the surface at much lower temperatures than OH formed by water dissociation on oxygen vacancies.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1531521
- author
- Walle, L. E. ; Borg, A. ; Uvdal, Per LU and Sandell, A.
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- synchrotron radiation, photoemission, adsorption, dissociation, titanium compounds, water
- in
- Physical Review B (Condensed Matter and Materials Physics)
- volume
- 80
- issue
- 23
- publisher
- American Physical Society
- external identifiers
-
- wos:000273228800132
- scopus:77954747231
- ISSN
- 1098-0121
- DOI
- 10.1103/PhysRevB.80.235436
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
- id
- e88e5b2a-2898-4b20-935d-4f57197af5ba (old id 1531521)
- date added to LUP
- 2016-04-01 14:26:03
- date last changed
- 2022-03-29 20:57:18
@article{e88e5b2a-2898-4b20-935d-4f57197af5ba, abstract = {{We present evidence for mixed molecular and dissociative water adsorption at monolayer coverage on a rutile TiO2(110) surface free from oxygen vacancies using synchrotron radiation photoemission. At monolayer coverage the OH:H2O ratio is close to 0.5 and reducing the coverage by heating yields an increased OH:H2O ratio. At room temperature neither species originating from the monolayer on the defect-free surface can be detected. The OH species of the monolayer hence recombines and leaves the surface at much lower temperatures than OH formed by water dissociation on oxygen vacancies.}}, author = {{Walle, L. E. and Borg, A. and Uvdal, Per and Sandell, A.}}, issn = {{1098-0121}}, keywords = {{synchrotron radiation; photoemission; adsorption; dissociation; titanium compounds; water}}, language = {{eng}}, number = {{23}}, publisher = {{American Physical Society}}, series = {{Physical Review B (Condensed Matter and Materials Physics)}}, title = {{Experimental evidence for mixed dissociative and molecular adsorption of water on a rutile TiO2(110) surface without oxygen vacancies}}, url = {{http://dx.doi.org/10.1103/PhysRevB.80.235436}}, doi = {{10.1103/PhysRevB.80.235436}}, volume = {{80}}, year = {{2009}}, }