Issue 13, 2009
From the journal:

Physical Chemistry Chemical Physics

Charge transfer in Cr adsorption and reaction at the rutile TiO2(110) surface

Michael Nolan,*a   James S. Mulleyb  and  Roger A. Bennett*bc  

* Corresponding authors

a Tyndall National Institute, Lee Maltings, Prospect Row, Cork, Ireland
E-mail: michael.nolan@tyndall.ie

b Department of Physics, University of Reading, Whiteknights, UK

c Department of Chemistry, University of Reading, Whiteknights, UK
E-mail: r.a.bennett@reading.ac.uk

Abstract

The rutile TiO2(110) surface has been doped with sub-monolayer metallic Cr, which oxidises and donates charge to specific surface Ti ions. X-Ray and ultra violet photoemission spectroscopy and first principles density functional theory with Hubbard U are used to assign the oxidation states of Cr and surface Ti and we find that Cr2+ forms on bridging oxygen ions and a 5-fold coordinated surface Ti atom is reduced to Ti3+ and the Cr ions readily react with oxygen (to Cr3+), which leads to depletion of surface Ti3+ 3d electrons.

Graphical abstract: Charge transfer in Cr adsorption and reaction at the rutile TiO2(110) surface

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Article information

DOI
https://doi.org/10.1039/B819724E
Article type
Communication
Submitted
05 Nov 2008
Accepted
29 Jan 2009
First published
09 Feb 2009

Phys. Chem. Chem. Phys., 2009,11, 2156-2160

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Charge transfer in Cr adsorption and reaction at the rutile TiO2(110) surface

M. Nolan, J. S. Mulley and R. A. Bennett, Phys. Chem. Chem. Phys., 2009, 11, 2156 DOI: 10.1039/B819724E

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