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Mixed Dissociative and Molecular Water Adsorption on Anatase TiO2(101)
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Surface and Interface Science. Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and condensed matter physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Surface and Interface Science. Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and condensed matter physics.
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2011 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 115, no 19, 9545-9550 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2011. Vol. 115, no 19, 9545-9550 p.
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Physical Sciences
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URN: urn:nbn:se:uu:diva-154295DOI: 10.1021/jp111335wISI: 000290427400030OAI: oai:DiVA.org:uu-154295DiVA: diva2:419908
Available from: 2011-05-30 Created: 2011-05-30 Last updated: 2017-12-11

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Rensmo, HåkanSandell, Anders

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