| AVS 55th International Symposium & Exhibition | |
| Surface Science | Friday Sessions |
| Session SS+AS+NC-FrM |
| Session: | Environmental Surfaces and Water Interaction with Oxide Surfaces |
| Presenter: | S. Wendt, University of Aarhus, Denmark |
| Authors: | F. Besenbacher, University of Aarhus, Denmark J. Matthiesen, University of Aarhus, Denmark S. Wendt, University of Aarhus, Denmark J.Ø. Hansen, University of Aarhus, Denmark E. Laegsgaard, University of Aarhus, Denmark B. Hammer, University of Aarhus, Denmark |
| Correspondent: | Click to Email |
By means of high-resolution scanning tunneling microscopy(STM) measurements and density functional theory (DFT) calculations we studied the reaction between O2 and H adatoms on reduced rutile TiO2(110). We identified chemisorbed OH_O species as the initial intermediate that is produced by H transfer reactions to O2 molecules, which concomitantly dissociate. Through further successive H transfer reactions, mediated by co-adsorbed water, the OH_O species are finally transformed into water dimers. Our data exemplify how time-lapsed STM imaging, in combination with DFT calculations, can be successfully used to unravel reactions on surfaces with a high number of intermediates.