期刊
BIOCHEMICAL SOCIETY TRANSACTIONS
卷 40, 期 -, 页码 1330-1335出版社
PORTLAND PRESS LTD
DOI: 10.1042/BST20120120
关键词
electrochemical communication/wiring; electrode; extracellular electron transfer; microbial bioelectrochemical system; osmium redox system
资金
- European Commission [FP7-PEOPLE-2010-ITN-264772]
- Swedish Research Council [2010-5031, 2010-2013]
- Science Foundation Ireland Charles Parsons Energy Research Award
Electrochemical communication between micro-organisms and electrodes is the integral and fundamental part of BESs (bioelectrochemical systems). The immobilization of bacterial cells on the electrode and ensuring efficient electron transfer to the electrode via a mediator are decisive features of mediated electrochemical biosensors. Notably, mediator-based systems are essential to extract electrons from the non-exoelectrogens, a major group of microbes in Nature. The advantage of using polymeric mediators over diffusible mediators led to the design of osmium redox polymers. Their successful use in enzyme-based biosensors and BFCs (biofuel cells) paved the way for exploring their use in microbial BESs. The present mini-review focuses on osmium-bound redox systems used to date in microbial BESs and their role in shuttling electrons from viable microbial cells to electrodes.
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