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Mixed Dissociative and Molecular Water Adsorption on Anatase TiO2(101)

Walle, L. E.; Borg, A.; Johansson, E. M. J.; Plogmaker, S.; Rensmo, H.; Uvdal, Per LU and Sandell, A. (2011) In Journal of Physical Chemistry C 115(19). p.9545-9550
Abstract
The adsorption properties of water on the stoichiometric (101) surface of anatase TiO2 in the temperature range 160-400 K has been studied by synchrotron radiation core level photoelectron spectroscopy. O 1s spectra give clear evidence for the formation of a first layer of water that comprises both H2O and OH. The composition is 0.77 +/- 0.05 ML H2O and 0.47 +/- 0.05 ML OH. Decreasing the coverage by heating leads to a decreased H2O/OH ratio. The results are very similar to those recently reported for water on rutile TiO2(110) and show that the previously proposed model of molecular adsorption only on anatase TiO2(101) must be revised.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Chemistry C
volume
115
issue
19
pages
9545 - 9550
publisher
The American Chemical Society
external identifiers
  • wos:000290427400030
  • scopus:79956126747
ISSN
1932-7447
DOI
10.1021/jp111335w
language
English
LU publication?
yes
id
1c13f2c4-a164-4f8c-9215-8d7d0bfbb858 (old id 1986824)
date added to LUP
2011-06-29 10:27:47
date last changed
2017-10-01 03:12:14
@article{1c13f2c4-a164-4f8c-9215-8d7d0bfbb858,
  abstract     = {The adsorption properties of water on the stoichiometric (101) surface of anatase TiO2 in the temperature range 160-400 K has been studied by synchrotron radiation core level photoelectron spectroscopy. O 1s spectra give clear evidence for the formation of a first layer of water that comprises both H2O and OH. The composition is 0.77 +/- 0.05 ML H2O and 0.47 +/- 0.05 ML OH. Decreasing the coverage by heating leads to a decreased H2O/OH ratio. The results are very similar to those recently reported for water on rutile TiO2(110) and show that the previously proposed model of molecular adsorption only on anatase TiO2(101) must be revised.},
  author       = {Walle, L. E. and Borg, A. and Johansson, E. M. J. and Plogmaker, S. and Rensmo, H. and Uvdal, Per and Sandell, A.},
  issn         = {1932-7447},
  language     = {eng},
  number       = {19},
  pages        = {9545--9550},
  publisher    = {The American Chemical Society},
  series       = {Journal of Physical Chemistry C},
  title        = {Mixed Dissociative and Molecular Water Adsorption on Anatase TiO2(101)},
  url          = {http://dx.doi.org/10.1021/jp111335w},
  volume       = {115},
  year         = {2011},
}