TY - JOUR
T1 - Oxygen-Mediated Diffusion of Oxygen Vacancies on the TiO2(110) Surface
AU - Schaub, Renald
AU - Wahlström, Erik
AU - Rønnau, Anders
AU - Lægsgaard, Erik
AU - Stensgaard, Ivan
AU - Besenbacher, Flemming
N1 - This paper made the headlines in Chemical Engineering News (CENEAR 81 3, 9 (2003)), and had a significant impact. ISI citations 74
PY - 2003/1
Y1 - 2003/1
N2 - Defects such as oxygen vacancies play a crucial role in the surface properties of transition metal oxides. By means of time-resolved, high-resolution scanning tunneling microscopy, we unraveled an adsorbate-mediated diffusion mechanism of oxygen vacancies on rutile TiO2(110). Adsorbed oxygen molecules mediate vacancy diffusion through the loss of an oxygen atom to a vacancy and the sequential capture of an oxygen atom from a neighboring bridging oxygen row, leading to an anisotropic oxygen vacancy diffusion pathway perpendicular to the bridging oxygen rows.
AB - Defects such as oxygen vacancies play a crucial role in the surface properties of transition metal oxides. By means of time-resolved, high-resolution scanning tunneling microscopy, we unraveled an adsorbate-mediated diffusion mechanism of oxygen vacancies on rutile TiO2(110). Adsorbed oxygen molecules mediate vacancy diffusion through the loss of an oxygen atom to a vacancy and the sequential capture of an oxygen atom from a neighboring bridging oxygen row, leading to an anisotropic oxygen vacancy diffusion pathway perpendicular to the bridging oxygen rows.
UR - http://www.scopus.com/inward/record.url?scp=0037449539&partnerID=8YFLogxK
U2 - 10.1126/science.1078962
DO - 10.1126/science.1078962
M3 - Article
SN - 0036-8075
VL - 299
SP - 377
EP - 379
JO - Science
JF - Science
IS - 5605
ER -