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Issue 13, 2009
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Charge transfer in Cr adsorption and reaction at the rutile TiO2(110) surface

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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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Publication details

The article was received on 05 Nov 2008, accepted on 29 Jan 2009 and first published on 09 Feb 2009


Article type: Communication
DOI: 10.1039/B819724E
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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