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Surface poisoning during electrocatalytic monosaccharide oxidation reactions at gold electrodes in alkaline medium
http://hdl.handle.net/2298/12332
http://hdl.handle.net/2298/123329015cdbf-843e-493b-81d3-88a8c8cce94f
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
8.pdf (1.7 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2009-09-10 | |||||
| タイトル | ||||||
| タイトル | Surface poisoning during electrocatalytic monosaccharide oxidation reactions at gold electrodes in alkaline medium | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ | journal article | |||||
| 著者 |
Tominaga, Masato
× Tominaga, Masato× Nagashima, Makoto× Nishiyama, Katsuhiko× Taniguchi, Isao |
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| 別言語の著者 |
冨永, 昌人
× 冨永, 昌人× 谷口, 功× 西山, 勝彦× 長嶋, 慎人 |
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| 内容記述 | ||||||
| 内容記述 | In the present study, the surface poisoning of electrocatalytic monosaccharide oxidation reactions at gold electrodes were investigated. In the cyclic voltammetric studies, the electrocatalytic oxidation of aldohexose and aldopentose type monosaccharides, aminosugars, acetyl-glucosamine and glucronamide were observed at gold plate electrodes in alkaline medium. However, in controlled-potential electrolytic studies ranging -0.3 to -0.2 V in reaction solutions, current flows during electrolyses decreased quickly with time, except when glucosamine was used as a substrate. Results from surface enhanced infrared adsorption (SEIRA) spectroscopic measurements at an evaporated gold electrode for the electrocatalytic oxidation of glucose in 0.1 mol dm-3 NaOH at -0.3 V and Gaussian simulated spectra indicated that the gluconic acid as a 2-electron oxidation product and/or its analogs adsorbed onto the gold surface. Electrochemical quartz crystal microbalance (EQCM) measurement results, along with surface adsorption results from surface poisoning at the gold electrode during electrolytic reactions, suggested that gluconic acid and/or its analogs adsorbed vertically onto electrode surfaces in a full monolayer packing-like conformation. In the case of the electro oxidation of glucosamine in 0.1 mol dm-3 NaOH at -0.2 V, the obtained SEIRA spectra and EQCM results, clearly indicated that the glucosaminic acid as a 2-oxidation glucosamine product did not strongly bind onto the gold electrode surface. | |||||
| 書誌情報 |
Electrochemistry Communications 巻 9, 号 8, p. 1892-1898, 発行年 2007-08 |
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| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA11324699 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 関連識別子 | 10.1016/j.elecom.2007.04.024 | |||||
| 権利 | ||||||
| 権利情報 | © 2007 Elsevier B.V. All rights reserved. | |||||
| 情報源(ISSN) | ||||||
| 関連名称 | 13882481 | |||||
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| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 形態 | ||||||
| 1675608 bytes | ||||||
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| 出版タイプ | AM | |||||
| 日本十進分類法 | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 431.7 | |||||
| 出版者 | ||||||
| 出版者 | Elsevier | |||||
| 資源タイプ | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 論文(Article) | |||||
| 資源タイプ・ローカル | ||||||
| 雑誌掲載論文 | ||||||
| 資源タイプ・NII | ||||||
| Journal Article | ||||||
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| URL | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | http://www.elsevier.com/wps/find/journaldescription.cws_home/601449/description#description | |||||
