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Katsube D, Ohno S, Takayanagi S, Ojima S, Maeda M, Origuchi N, Ogawa A, Ikeda N, Aoyagi Y, Kabutoya Y, Kyungmin K, Linfeng H, Fengxuan L, Tsuda Y, Yoshida H, Nishi S, Sakamoto T, Inami E, Yoshigoe A, Abe M. Oxidation of Anatase TiO 2(001) Surface Using Supersonic Seeded Oxygen Molecular Beam. Langmuir 2021; 37:12313-12317. [PMID: 34644079 DOI: 10.1021/acs.langmuir.1c01752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We investigated the oxidation of oxygen vacancies at the surface of anatase TiO2(001) using a supersonic seeded molecular beam (SSMB) of oxygen. The oxygen vacancies at the top surface and subsurface could be eliminated by the supply of oxygen using an SSMB. Oxygen vacancies are present on the surface of anatase TiO2(001) when it is untreated before transfer to a vacuum chamber. These vacancies, which are stable in the as-grown condition, could also be effectively eliminated by using the oxygen SSMB.
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Affiliation(s)
- Daiki Katsube
- Department of Electrical, Electronics and Information Engineering, Nagaoka University of Technology, 1603-1 Kamitomiokamachi, Nagaoka, Niigata 940-2188, Japan
| | - Shinya Ohno
- Department of Physic, Faculty of Engineerings, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Shuhei Takayanagi
- Department of Physic, Faculty of Engineerings, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Shoki Ojima
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Motoyasu Maeda
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Naoki Origuchi
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Arata Ogawa
- Department of Physic, Faculty of Engineerings, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Natsuki Ikeda
- Department of Physic, Faculty of Engineerings, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Yoshihide Aoyagi
- Department of Physic, Faculty of Engineerings, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Yuito Kabutoya
- Department of Electrical, Electronics and Information Engineering, Nagaoka University of Technology, 1603-1 Kamitomiokamachi, Nagaoka, Niigata 940-2188, Japan
| | - Kim Kyungmin
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Hou Linfeng
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Li Fengxuan
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Yasutaka Tsuda
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan
| | - Hikaru Yoshida
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan
| | - Shizuka Nishi
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan
| | - Tetsuya Sakamoto
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan
| | - Eiichi Inami
- School of Systems Engineering, Kochi University of Technology, 185 Miyanokuchi, Tosayamada, Kami, Kochi 782-8502, Japan
| | - Akitaka Yoshigoe
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan
| | - Masayuki Abe
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
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