Electrochemical insight into the mechanism of electron transport in biofilms of Geobacter sulfurreducens
By G. Schrott, P. S. Bonanni, L. Robuschi, A. Estéve-Núñez, J. P. Busalmen. 2011
124 citations recorded by the source corpus.
Abstract Electroactive bacterial biofilms can be produced on a polarized electrode by forcing its use as the final electron acceptor for bacterial respiration. This strategy offers the researcher the unique possibility to control the respiration process with extreme precision. The production of current, the accumulation of charge and the conducting properties of electroactive biofilms has been interrogated in this work through very basic electrochemical techniques including chronopotentiometry, chronoamperometry and cyclic voltammetry. Presented results indicate that charge can be accumulated in the biofilm conductive network, that network conductivity does not represent a limit for current production and that both the steady state current and the amount of accumulated charge depend on the redox state of cytochromes wiring the cells to the electrode. A model of biofilm conduction is presented as well.
Subfields: Electrical and Electronic Engineering, Electrochemistry, Environmental Engineering
View Paper: https://www.semanticscholar.org/paper/5ddafd667243c25882cecb78632d083a6c9da9cb
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Citations in the corpus
- Microbial electron transport and energy conservation – the foundation for optimizing bioelectrochemical systems (2015, background): “It was proposed that the evolved cells possess the ability to excrete hydroquinone derivatives through a highly permeable outer membrane, which act as mediators to transport the electrons between cell and electrode (Qiao et al., 2008; Qian et al., 2011).”