期刊
CHEMICAL PHYSICS LETTERS
卷 513, 期 1-3, 页码 84-87出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2011.07.071
关键词
-
资金
- Ministry of Education, Japan
- Japan Science and Technology Agency, JST, 'CREST'
After exposing a reduced TiO2(1 1 0) surface to an O-2 gas, the defect state seen in the band gap for the reduced surface almost disappeared, while O adatoms (O-ad) appeared on the 5-fold Ti rows. We then dosed a CO gas onto the TiO2(1 1 0) surface oxidized by O-18(2) exposure and measured the defect state intensity and the amount of O-18 by photoemission and ion scattering spectroscopy, respectively. With increasing CO dose, the defect state intensity increases, whereas the amount of O-18 decreases. The results obtained clearly show the reaction of CO with Oad probably to form CO2. (C) 2011 Elsevier B. V. All rights reserved.
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