Wettability-Regulated Extracellular Electron Transfer from the Living Organism of Shewanella loihica PV-4

被引：67

作者：

Ding, Chun-mei ^{[1
]}

Lv, Mei-ling ^{[1
]}

Zhu, Ying ^{[1
]}

Jiang, Lei ^{[1
,2
]}

Liu, Huan ^{[1
]}

机构：

[1] Beihang Univ, Key Lab Bioinspired Smart Interfacial Sci & Techn, Minist Educ,Sch Chem & Environm, Beijing Key Lab Bioinspired Energy Mat & Devices, Beijing 100191, Peoples R China

[2] Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Key Lab Organ Solids, Beijing 100190, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2015年 / 54卷 / 05期

基金：

中国国家自然科学基金;

关键词：

cytochromes; electrochemistry; electron transfer; microbes; wettability; MICROBIAL FUEL-CELLS; C-TYPE CYTOCHROMES; DESULFOVIBRIO-VULGARIS HILDENBOROUGH; GEOBACTER-SULFURREDUCENS CELLS; BIOELECTROCHEMICAL SYSTEMS; CURRENT GENERATION; REDOX POTENTIALS; HIGH-PERFORMANCE; ONEIDENSIS MR-1; FLOW;

D O I：

10.1002/anie.201409163

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

C-type cytochromes located on the outer membrane (OMCs) of genus Shewanella act as the main redox-active species to mediate extracellular electron transfer (EET) from the inside of the outer membrane to the external environment: the central challenge that must be met for successful EET. The redox states of OMCs play a crucial role in dictating the rate and extent of EET. Here, we report that the surface wettability of the electrodes strongly influences the EET activity of living organisms of Shewanella loihica PV-4 at a fixed external potential: the EET activity on a hydrophilic electrode is more than five times higher than that on a hydrophobic one. We propose that the redox state of OMCs varies significantly at electrodes with different wettability, resulting in different EET activities.

引用

页码：1446 / 1451

页数：6

共 55 条

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