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dc.contributor.authorJana, Partha Sarathi
dc.contributor.authorKaturi, Krishna
dc.contributor.authorKavanagh, Paul
dc.contributor.authorKumar, Amit Ravi Pradeep
dc.contributor.authorLeech, Dónal
dc.date.accessioned2015-08-03T11:37:50Z
dc.date.available2015-08-03T11:37:50Z
dc.date.issued2014
dc.identifier.citationJana, P. S., Katuri, K., Kavanagh, P., Kumar, A., & Leech, D. (2014). Charge transport in films of Geobacter sulfurreducens on graphite electrodes as a function of film thickness. Phys. Chem. Chem. Phys., 16(19), 9039–9046. doi:10.1039/c4cp01023j
dc.identifier.issn14639076
dc.identifier.doi10.1039/c4cp01023j
dc.identifier.urihttp://hdl.handle.net/10754/563191
dc.description.abstractHarnessing, and understanding the mechanisms of growth and activity of, biofilms of electroactive bacteria (EAB) on solid electrodes is of increasing interest, for application to microbial fuel and electrolysis cells. Microbial electrochemical cell technology can be used to generate electricity, or higher value chemicals, from organic waste. The capability of biofilms of electroactive bacteria to transfer electrons to solid anodes is a key feature of this emerging technology, yet the electron transfer mechanism is not fully characterized as yet. Acetate oxidation current generated from biofilms of an EAB, Geobacter sulfurreducens, on graphite electrodes as a function of time does not correlate with film thickness. Values of film thickness, and the number and local concentration of electrically connected redox sites within Geobacter sulfurreducens biofilms as well as a charge transport diffusion co-efficient for the biofilm can be estimated from non-turnover voltammetry. The thicker biofilms, of 50 ± 9 μm, display higher charge transport diffusion co-efficient than that in thinner films, as increased film porosity of these films improves ion transport, required to maintain electro-neutrality upon electrolysis. This journal is © the Partner Organisations 2014.
dc.description.sponsorshipSupport for this research was provided by a Charles Parsons Energy Research Award through Science Foundation Ireland and an EU FP 7 Marie Curie Intra European Fellowship to AK for Career Development (Grant A/6342-PIEF-GA-2009-237181).
dc.publisherRoyal Society of Chemistry (RSC)
dc.titleCharge transport in films of Geobacter sulfurreducens on graphite electrodes as a function of film thickness
dc.typeArticle
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.identifier.journalPhysical Chemistry Chemical Physics
dc.contributor.institutionSchool of Chemistry and Ryan Institute, National University of Ireland Galway, University Road, Galway, Ireland
kaust.personKaturi, Krishna


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