Publication

Electrochemical communication between microbial cells and electrodes via osmium redox systems

Hasan, Kamrul
Patil, Sunil A.
Leech, Dónal
Hägerhäll, Cecilia
Gorton, Lo
Citation
Hasan, Kamrul; Patil, Sunil A. Leech, Dónal; Hägerhäll, Cecilia; Gorton, Lo (2012). Electrochemical communication between microbial cells and electrodes via osmium redox systems. Biochemical Society Transactions 40 , 1330-1335
Abstract
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.
Funder
Publisher
Portland Press Ltd.
Publisher DOI
10.1042/bst20120120
Rights
Attribution-NonCommercial-NoDerivs 3.0 Ireland