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Mandatory Fields
Hasan, K,Patil, SA,Leech, D,Hagerhall, C,Gorton, L
Biochemical Society Transactions
Electrochemical communication between microbial cells and electrodes via osmium redox systems
Optional Fields
electrochemical communication/wiring electrode extracellular electron transfer microbial bioelectrochemical system osmium redox system FUEL-CELLS ELECTRICAL COMMUNICATION PHYSIOLOGICAL BUFFER GLUCOSE-OXIDASE BIOFUEL CELL POLYMERS ENZYME MICROORGANISMS GENERATION CENTERS
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.
DOI 10.1042/BST20120120
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