Electron Transfer-Induced Dynamics of Oxygen Molecules on the TiO 2 (110) Surface-Reference-Cited by-同舟云学术

Electron Transfer-Induced Dynamics of Oxygen Molecules on the TiO 2 (110) Surface

Published:2004-01-23 Issue:5657 Volume:303 Page:511-513
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Wahlström Erik¹,Vestergaard Ebbe Kruse¹,Schaub Renald¹,Rønnau Anders¹,Vestergaard Majken¹,Lægsgaard Erik¹,Stensgaard Ivan¹,Besenbacher Flemming¹

Affiliation:

1. Interdisciplinary Nanoscience Center (iNANO), Center for Atomic-Scale Materials Physics (CAMP), and Department of Physics and Astronomy, University of Aarhus, DK-8000 Århus C, Denmark.

Abstract

Diffusion of oxygen molecules on transition metal oxide surfaces plays a vital role for the understanding of catalysis and photocatalysis on these materials. By means of time-resolved scanning tunneling microscopy, we provide evidence for a charge transfer–induced diffusion mechanism for O 2 molecules adsorbed on a rutile TiO 2 (110) surface. The O 2 hopping rate depended on the number of surface donors (oxygen vacancies), which determines the density of conduction band electrons. These results may have implications for the understanding of oxidation processes on metal oxides in general.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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