Bioelectrocatalytic Oxygen Reduction Reaction by Bilirubin Oxidase Adsorbed on Glassy Carbon and Edge-Plane Pyrolytic Graphite Electrodes: Effect of Redox Mediators
文献类型：期刊论文
| 作者 | Li, De-an1; Okajima, Takeyoshi1; Mao, Lanqun2; Ohsaka, Takeo1 |
| 刊名 | INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
 |
| 出版日期 | 2014-03-01 |
| 卷号 | 9期号:3页码:1390-1398 |
| 关键词 | Bilirubin Oxidase Direct Electron Transfer Intramolecular Electron Transfer Oxygen Reduction Reaction Bioelectrocatalysis Redox Mediators |
| ISSN号 | 1452-3981 |
| 英文摘要 | Direct electron transfer (DET) of bilirubin oxidase (BOx, from Myrothecium verrucaria) adsorbed on edge-plane pyrolytic graphite (EPPG) electrode as well as an electron transfer between the EPPG or glassy carbon (GC) electrode and the BOx (adsorbed on these electrodes) via a mediation by redox mediators ([Fe(CN)(6)](3-) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)(ABTS)), i.e., a mediator-assisted electron transfer, have been examined under anaerobic and aerobic conditions by cyclic voltammetry and differential pulse voltammetry. On differential pulse voltammograms on the EPPG electrode two redox processes with formal potentials of 0.50 and 0.29 V vs. Ag/AgCl/NaCl(3M) were clearly observed in 0.05 M phosphate buffer (pH 5.0), corresponding to the redox transformations of the T1 site and the T2/T3 cluster of the BOx, respectively. DET was not observed on the GC electrode. A mediator-assisted electron transfer between the electrode and the BOx adsorbed on it was realized in the absence and the presence of [Fe(CN)(6)](3-) and ABTS through the bioelectrocatalytic oxygen reduction reaction (ORR) by the BOx, and in addition its overall electron transfer mechanism is discussed briefly including the DET, mediator-assisted electron transfer and an intramolecular electron transfer (IET) from the T1 site to the T2/T3 cluster site, in which an uphill IET reaction during the catalytic ORR is suggested. |
| 语种 | 英语 |
| WOS记录号 | WOS:000331194200027 |
| 出版者 | ESG |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/50097]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, De-an |
| 作者单位 | 1.Tokyo Inst Technol, Interdisciplinary Grad Sch Sci & Engn, Dept Elect Chem, Midori Ku, Yokohama, Kanagawa 2268502, Japan 2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, De-an,Okajima, Takeyoshi,Mao, Lanqun,et al. Bioelectrocatalytic Oxygen Reduction Reaction by Bilirubin Oxidase Adsorbed on Glassy Carbon and Edge-Plane Pyrolytic Graphite Electrodes: Effect of Redox Mediators[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2014,9(3):1390-1398. |
| APA | Li, De-an,Okajima, Takeyoshi,Mao, Lanqun,&Ohsaka, Takeo.(2014).Bioelectrocatalytic Oxygen Reduction Reaction by Bilirubin Oxidase Adsorbed on Glassy Carbon and Edge-Plane Pyrolytic Graphite Electrodes: Effect of Redox Mediators.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,9(3),1390-1398. |
| MLA | Li, De-an,et al."Bioelectrocatalytic Oxygen Reduction Reaction by Bilirubin Oxidase Adsorbed on Glassy Carbon and Edge-Plane Pyrolytic Graphite Electrodes: Effect of Redox Mediators".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 9.3(2014):1390-1398. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。