| Project/Area Number |
13650879
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
工業物理化学
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
KITAMURA Fusao Tokyo Institute of Technology, Interdisciplinary Graduate School of Science and Engineering, Associate Professor, 大学院・総合理工学研究科, 助教授 (00224973)
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| Co-Investigator(Kenkyū-buntansha) |
OKAJIMA Takeyoshi Tokyo Institute of Technology, Interdisciplinary Graduate School of Science and Engineering, Research Associate, 大学院・総合理工学研究科, 助手 (70194347)
OHSAKA Takeo Tokyo Institute of Technology, Interdisciplinary Graduate School of Science and Engineering, Professor, 大学院・総合理工学研究科, 教授 (80152099)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2002: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2001: ¥3,000,000 (Direct Cost: ¥3,000,000)
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| Keywords | Near Infrared Spectroscopy / Electrode | Electrolyte Interface / Adsorption / Electrochemistry / Viologen / Carbonate Ion / Gold Electrode / Mercury Electrode / 固液界面 / 電気化学測定法 / その場測定法 / 電気二重層 |
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| Research Abstract |
Although in situ infrared spectroscopic studies on the molecular structure of electrode I electrolyte interface have widely been performed in the mid-IR region, an infrared energy loss due to the strong absorption of solvent water molecules largely restricted electrochemical cell arrangements. In order to overcome the situation, we have developed in situ near-infrared spectro-electrochemical techniques this research. It was applied to the gold electrode I aqueous electrolyte interface, and we have successfully observed the water molecules associated to the electrolyte anions. The result was found to be consistent with those previously obtained in mid-IR region.
In situ infrared reflection absorption spectroscopy was also applied to electrodes such as liquid mercury and graphite. And the adsorption of perchlorate and/or carbonate anions was observed as a function of the electrode potential. The results are expected to provide fundamental information for further development of electrochemical double-layer theory・
Adsorption behavior of alkyl viologens on gold single crystal electrodes was studied by cyclic voltammetry and in situ infrared spectroscopy. A number of spike like redox waves due to adsorbed viologen molecules appeared on their CVs, which changed in a complicated manner d。Pending on the alkyl chain length and on crystallographic orientations. Characteristic voltammograms were also observed on a highly oriented pyrolitic graphite (HOPG) electrode, and the molecular orientation of adsorbed viologens were determined by infrared spectroscopy.
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