Reaction of CO with O adatoms on rutile TiO2(1 1 0) surfaces

K. Mitsuhara; H. Okumura; A. Visikovskiy; M. Takizawa; Y. Kido

doi:10.1016/j.cplett.2011.07.071

Reaction of CO with O adatoms on rutile TiO₂(1 1 0) surfaces

K. Mitsuhara, H. Okumura, A. Visikovskiy, M. Takizawa, Y. Kido

研究成果: ジャーナルへの寄稿 › 学術誌 › 査読

12 被引用数 (Scopus)

抄録

After exposing a reduced TiO₂(1 1 0) surface to an O₂ 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 ¹⁸O₂ exposure and measured the defect state intensity and the amount of ¹⁸O by photoemission and ion scattering spectroscopy, respectively. With increasing CO dose, the defect state intensity increases, whereas the amount of ¹⁸O decreases. The results obtained clearly show the reaction of CO with O_ad probably to form CO₂.

本文言語	英語
ページ（範囲）	84-87
ページ数	4
ジャーナル	Chemical Physics Letters
巻	513
号	1-3
DOI	https://doi.org/10.1016/j.cplett.2011.07.071
出版ステータス	出版済み - 9月 6 2011
外部発表	はい

!!!All Science Journal Classification (ASJC) codes

物理学および天文学（全般）
物理化学および理論化学

文献へのアクセス

10.1016/j.cplett.2011.07.071

他のファイルとリンク

引用スタイル

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title = "Reaction of CO with O adatoms on rutile TiO2(1 1 0) surfaces",

abstract = "After exposing a reduced TiO2(1 1 0) surface to an O2 gas, the defect state seen in the band gap for the reduced surface almost disappeared, while O adatoms (Oad) appeared on the 5-fold Ti rows. We then dosed a CO gas onto the TiO2(1 1 0) surface oxidized by 18O2 exposure and measured the defect state intensity and the amount of 18O by photoemission and ion scattering spectroscopy, respectively. With increasing CO dose, the defect state intensity increases, whereas the amount of 18O decreases. The results obtained clearly show the reaction of CO with Oad probably to form CO2.",

author = "K. Mitsuhara and H. Okumura and A. Visikovskiy and M. Takizawa and Y. Kido",

note = "Funding Information: The authors would like to appreciate M. Kohyama and T. Akita, AIST for their useful comments and advices. Thanks are also due to H. Namba for his experimental support. This work was supported by the subsidies from Japan Science and Technology Agency, JST, {\textquoteleft}CREST{\textquoteright} and also from Ministry of Education, Japan, {\textquoteleft}Academic Frontier Project{\textquoteright}.",

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AU - Mitsuhara, K.

AU - Okumura, H.

AU - Visikovskiy, A.

AU - Takizawa, M.

AU - Kido, Y.

N1 - Funding Information: The authors would like to appreciate M. Kohyama and T. Akita, AIST for their useful comments and advices. Thanks are also due to H. Namba for his experimental support. This work was supported by the subsidies from Japan Science and Technology Agency, JST, ‘CREST’ and also from Ministry of Education, Japan, ‘Academic Frontier Project’.

PY - 2011/9/6

Y1 - 2011/9/6

N2 - After exposing a reduced TiO2(1 1 0) surface to an O2 gas, the defect state seen in the band gap for the reduced surface almost disappeared, while O adatoms (Oad) appeared on the 5-fold Ti rows. We then dosed a CO gas onto the TiO2(1 1 0) surface oxidized by 18O2 exposure and measured the defect state intensity and the amount of 18O by photoemission and ion scattering spectroscopy, respectively. With increasing CO dose, the defect state intensity increases, whereas the amount of 18O decreases. The results obtained clearly show the reaction of CO with Oad probably to form CO2.

AB - After exposing a reduced TiO2(1 1 0) surface to an O2 gas, the defect state seen in the band gap for the reduced surface almost disappeared, while O adatoms (Oad) appeared on the 5-fold Ti rows. We then dosed a CO gas onto the TiO2(1 1 0) surface oxidized by 18O2 exposure and measured the defect state intensity and the amount of 18O by photoemission and ion scattering spectroscopy, respectively. With increasing CO dose, the defect state intensity increases, whereas the amount of 18O decreases. The results obtained clearly show the reaction of CO with Oad probably to form CO2.

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