Electrochemical treatment of graphite to enhance electron transfer from bacteria to electrodes
Electrochemical treatment of graphite to enhance electron transfer from bacteria to electrodes
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DOI：
10.1016/j.biortech.2010.09.022
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发表时间：
2011-02-01
影响因子：
11.4
通讯作者：
Tian, Jinglei
中科院分区：
文献类型：
--
作者：
Tang, Xinhua;Guo, Kun;Tian, Jinglei
在本文中，石墨毡被连续电化学氧化以增加微生物燃料电池（mfc）的电流产生。将处理过的石墨毡和未处理过的石墨毡用作MFCs的阳极，并对其产量进行了比较。经电化学处理的石墨毡阳极产电流约为1.13 mA，比未经处理的石墨毡阳极产电流高39.5%。结果表明，石墨毡电极的电化学氧化可以增强电极与电致细菌之间的电子耦合。进一步的研究表明，电化学氧化新生成的羧基含官能团是电子转移增强的原因，因为它们与细菌细胞色素中的肽键形成了强氢键。(C) 2010 Elsevier Ltd.版权所有。
In this paper, graphite felts were continuously electrochemically oxidized to increase the current generation in microbial fuel cells (MFCs). The treated and untreated graphite felts were utilized as anodes in MFCs and current production was compared. The current production on electrochemically treated graphite felt anodes was about 1.13 mA. 39.5% higher compared with that of MFCs containing untreated anodes. The results demonstrated that the electronic coupling between graphite felt electrodes and electrogenic bacteria could be enhanced by electrochemical oxidization of the electrodes. Further study showed that the newly generated carboxyl containing functional groups from electrochemical oxidization were responsible for the enhanced electron transfer, due to their strong hydrogen bonding with peptide bonds in bacterial cytochromes. (C) 2010 Elsevier Ltd. All rights reserved.