Competing water dissociation channels on rutile TiO2(110)
(2014) In Surface Science 621. p.77-81- Abstract
- The interplay between two different water dissociation channels on rutile TiO2(110) was studied with the use of synchrotron radiation photoelectron spectroscopy. It was found that water dissociation at oxygen vacancies competes with water dissociation on defect-free regions such that one vacancy assisted dissociation event cancels one dissociation event on defect-free regions. The quenching affects the thermally most stable dissociated species that form at low coverage on the defect free surface but does not affect the stability of molecular water. As a result, molecular adsorption becomes favored at low coverage on a surface where all vacancies have been hydroxylated. The presence of competitive dissociation channels rationalizes the... (More)
- The interplay between two different water dissociation channels on rutile TiO2(110) was studied with the use of synchrotron radiation photoelectron spectroscopy. It was found that water dissociation at oxygen vacancies competes with water dissociation on defect-free regions such that one vacancy assisted dissociation event cancels one dissociation event on defect-free regions. The quenching affects the thermally most stable dissociated species that form at low coverage on the defect free surface but does not affect the stability of molecular water. As a result, molecular adsorption becomes favored at low coverage on a surface where all vacancies have been hydroxylated. The presence of competitive dissociation channels rationalizes the difficulties in identifying dissociated species on defect-free regions in previous studies. (C) 2013 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4376331
- author
- Walle, L. E. ; Ragazzon, D. ; Borg, A. ; Uvdal, Per LU and Sandell, A.
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Titanium dioxide, Water, Adsorption, Photoelectron spectroscopy
- in
- Surface Science
- volume
- 621
- pages
- 77 - 81
- publisher
- Elsevier
- external identifiers
-
- wos:000330909300011
- scopus:84891758241
- ISSN
- 0039-6028
- DOI
- 10.1016/j.susc.2013.11.001
- 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
- 3ee1c7db-93b9-4037-83fc-bb24f08bdf4a (old id 4376331)
- date added to LUP
- 2016-04-01 14:54:42
- date last changed
- 2022-03-22 02:35:56
@article{3ee1c7db-93b9-4037-83fc-bb24f08bdf4a,
abstract = {{The interplay between two different water dissociation channels on rutile TiO2(110) was studied with the use of synchrotron radiation photoelectron spectroscopy. It was found that water dissociation at oxygen vacancies competes with water dissociation on defect-free regions such that one vacancy assisted dissociation event cancels one dissociation event on defect-free regions. The quenching affects the thermally most stable dissociated species that form at low coverage on the defect free surface but does not affect the stability of molecular water. As a result, molecular adsorption becomes favored at low coverage on a surface where all vacancies have been hydroxylated. The presence of competitive dissociation channels rationalizes the difficulties in identifying dissociated species on defect-free regions in previous studies. (C) 2013 Elsevier B.V. All rights reserved.}},
author = {{Walle, L. E. and Ragazzon, D. and Borg, A. and Uvdal, Per and Sandell, A.}},
issn = {{0039-6028}},
keywords = {{Titanium dioxide; Water; Adsorption; Photoelectron spectroscopy}},
language = {{eng}},
pages = {{77--81}},
publisher = {{Elsevier}},
series = {{Surface Science}},
title = {{Competing water dissociation channels on rutile TiO2(110)}},
url = {{http://dx.doi.org/10.1016/j.susc.2013.11.001}},
doi = {{10.1016/j.susc.2013.11.001}},
volume = {{621}},
year = {{2014}},
}