2001 Fiscal Year Final Research Report Summary
Active Site Structure and Local Electronic States of Photocatalysts by Space-resolved Spectroscopy using STM
| Project/Area Number |
11450306
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
触媒・化学プロセス
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| Research Institution | Okazaki National Research Institutes (2001)
University of Yamanashi (1999-2000) |
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Principal Investigator |
KOMIYAMA Masaharu Okazaki National Research Institutes Professor, 分子科学研究所, 教授 (60150257)
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| Co-Investigator(Kenkyū-buntansha) |
島口 たけみ 山梨大学, 教育人間科学部, 教務員 (40242622)
入山 裕 山梨大学, 教育人間科学部, 助教授 (90252006)
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| Project Period (FY) |
1999 – 2001
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| Keywords | scanning tunneling microsopy / STM / photocatalyst / titamium oxide / (110)face |
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| Research Abstract |
An apparent local surface structural change at nanoscale was observed by scanning tunneling microscopy (STM) on a TiOs surface upon illumination of ultra-violet (UV) light. This phenomenon was reversible with UV light irradiation, and was interpreted to be due to the local accumulation of photoexcited states. This is the first real-space observation of inhomogeneous local charge distribution under UV light irradiation at nanoscale on a semiconductive photocatalyst surface, which may help identifying the photocatalytic active sites and elucidating the reaction mechanisms over them.
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