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Electrochemical reduction of oxygen catalyzed by a wide range of bacteria including Gram-positive

Cournet, Amandine and Délia, Marie-Line and Bergel, Alain and Roques, Christine and Bergé, Mathieu Electrochemical reduction of oxygen catalyzed by a wide range of bacteria including Gram-positive. (2010) Electrochemistry Communications, vol. 12 (n° 4). pp. 505-508. ISSN 1388-2481

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Official URL: http://dx.doi.org/10.1016/J.ELECOM.2010.01.026

Abstract

Most bacteria known to be electrochemically active have been harvested in the anodic compartments of microbial fuel cells (MFCs) and are able to use electrodes as electron acceptors. The reverse phenomenon, i.e. using solid electrodes as electron donors, is not so widely studied. To our knowledge, most of the electrochemically active bacteria are Gram-negative. The present study implements a transitory electrochemical technique (cyclic voltammetry) to study the microbial catalysis of the electrochemicalreduction of oxygen. It is demonstrated that awiderange of aerobic and facultative anaerobic bacteria are able to catalyze oxygenreduction. Among these electroactive bacteria, several were Gram-positive. The transfer of electrons was direct since no activity was obtained with the filtrate. These findings, showing a widespread property among bacteriaincludingGram-positive ones, open new and interesting routes in the field of electroactive bacteria research.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at : http://www.sciencedirect.com/science/article/pii/S1388248110000391
Audience (journal):International peer-reviewed journal
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Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
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Deposited By:Audrey LEFEVRE

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