Metamorphosis of pathogen to electrigen at the electrode/electrolyte interface: Direct electron transfer of Staphylococcus aureus leading to superior electrocatalytic activity
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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| Title |
Metamorphosis of pathogen to electrigen at the electrode/electrolyte interface: Direct electron transfer of Staphylococcus aureus leading to superior electrocatalytic activity
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| Creator |
Bhuvaneswari, A.
Navanietha Krishnaraj, R. Sheela, B. |
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| Subject |
Electrodics and Electrocatalysis
Fuel Cells |
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| Description |
In this paper, we report that Staphylococcus aureus isolated from the rumen fluid can display direct electron
transfer on carbon felt electrodes and exhibit enhanced microbial electrocatalysis towards the oxidation of
complex substrate like cellulose. The phenomena of direct electron transfer and electrocatalysis were investigated
in detail by cyclic voltammentry and chronoamperometry. The electron transfer was closer to perfect
reversibility with a peak separation value of only 7 mV at a scan rate of 50 mV/s. The enhanced microbial
electrocatalysis towards the oxidation of cellulose revealed the potential of the microorganism for application in
microbial fuel cells. The pure cultures of S. aureus produced an electrocatalytic current density of 1.4 mA/cm2 as estimated by long-termchronoamperometry for a cellulose concentration of 20 mM. To the best of our knowledge
we report for the first time the use of S. aureus for bioelectricity generation with cellulose as a sole source of
electron donor.
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| Publisher |
Elsevier B.V
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| Date |
2013
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/3055/1/042-2013.pdf
Bhuvaneswari, A. and Navanietha Krishnaraj, R. and Sheela, B. (2013) Metamorphosis of pathogen to electrigen at the electrode/electrolyte interface: Direct electron transfer of Staphylococcus aureus leading to superior electrocatalytic activity. Electrochemistry Communications, 34. pp. 25-28. ISSN 1388-2481 |
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| Relation |
http://www.elsevier.com/locate/elecom
http://cecri.csircentral.net/3055/ |
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