Characteristics of hydrogen evolution and oxidation catalyzed by Desulfovibrio caledoniensis biofilm on pyrolytic graphite electrode
文献类型：期刊论文
| 作者 | Yu, Lin1,2; Duan, Jizhou1; Zhao, Wei1,2; Huang, Yanliang1; Hou, Baorong1; Duan, JZ (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China |
| 刊名 | ELECTROCHIMICA ACTA
 |
| 出版日期 | 2011-10-30 |
| 卷号 | 56期号:25页码:9041-9047 |
| ISSN号 | 0013-4686 |
| 关键词 | Sulphate-reducing Bacteria Electroactive Biofilm Hydrogen Evolution And Oxidation Direct Electron Transfer |
| DOI | 10.1016/j.electacta.2011.05.086 |
| 文献子类 | Article |
| 英文摘要 | Hydrogenase, an important electroactive enzyme of sulphate-reducing bacteria (SRB), has been discovered having the capacity to connect its activity to solid electrodes by catalyzing hydrogen evolution and oxidation. However, little attention has been paid to similar electroactive characteristics of SRB. In this study, the electroactivities of pyrolytic graphite electrode (PGE) coated with SRB biofilm were investigated. Two corresponding redox peaks were observed by cyclic voltammetry detection, which were related to the hydrogen evolution and oxidation. Moreover, the overpotential for the reactions decreased by about 0.2 V in the presence of the SRB biofilm. When the PGE coated with the SRB biofilm was polarized at 0.24 V (vs. SHE), an oxidation current related to the hydrogen oxidation was found. The SRB biofilm was able to obtain electrons from the -0.61 V (vs. SHE) polarized PG E to form hydrogen, and the electron transfer resistance also decreased with the formation of SRB biofilm, as measured by the non-destructive electrochemical impendence spectroscopy detection. It was concluded that the hydrogen evolution and oxidation was an important way for the electron transfer between SRB biofilm and solid electrode in anaerobic environment. (C) 2011 Published by Elsevier Ltd.; Hydrogenase, an important electroactive enzyme of sulphate-reducing bacteria (SRB), has been discovered having the capacity to connect its activity to solid electrodes by catalyzing hydrogen evolution and oxidation. However, little attention has been paid to similar electroactive characteristics of SRB. In this study, the electroactivities of pyrolytic graphite electrode (PGE) coated with SRB biofilm were investigated. Two corresponding redox peaks were observed by cyclic voltammetry detection, which were related to the hydrogen evolution and oxidation. Moreover, the overpotential for the reactions decreased by about 0.2 V in the presence of the SRB biofilm. When the PGE coated with the SRB biofilm was polarized at 0.24 V (vs. SHE), an oxidation current related to the hydrogen oxidation was found. The SRB biofilm was able to obtain electrons from the -0.61 V (vs. SHE) polarized PG E to form hydrogen, and the electron transfer resistance also decreased with the formation of SRB biofilm, as measured by the non-destructive electrochemical impendence spectroscopy detection. It was concluded that the hydrogen evolution and oxidation was an important way for the electron transfer between SRB biofilm and solid electrode in anaerobic environment. (C) 2011 Published by Elsevier Ltd. |
| 学科主题 | Electrochemistry |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000295997000005 |
| 公开日期 | 2012-07-03 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/11430]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 |
| 通讯作者 | Duan, JZ (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Lin,Duan, Jizhou,Zhao, Wei,et al. Characteristics of hydrogen evolution and oxidation catalyzed by Desulfovibrio caledoniensis biofilm on pyrolytic graphite electrode[J]. ELECTROCHIMICA ACTA,2011,56(25):9041-9047. |
| APA | Yu, Lin,Duan, Jizhou,Zhao, Wei,Huang, Yanliang,Hou, Baorong,&Duan, JZ .(2011).Characteristics of hydrogen evolution and oxidation catalyzed by Desulfovibrio caledoniensis biofilm on pyrolytic graphite electrode.ELECTROCHIMICA ACTA,56(25),9041-9047. |
| MLA | Yu, Lin,et al."Characteristics of hydrogen evolution and oxidation catalyzed by Desulfovibrio caledoniensis biofilm on pyrolytic graphite electrode".ELECTROCHIMICA ACTA 56.25(2011):9041-9047. |
入库方式： OAI收割
来源：海洋研究所
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