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Issue 34, 2013
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Improved cathode for high efficient microbial-catalyzed reduction in microbial electrosynthesis cells

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Abstract

Microbial electrosynthesis cells (MECs) are devices wherein microorganisms can electrochemically interact with electrodes, directly donating or accepting electrons from electrode surfaces. Here, we developed a novel cathode by using nickel nanowires anchored to graphite for the improvement of microbial-catalyzed reduction in MEC cathode chamber. This porous nickel-nanowire-network-coated graphite electrode increased the interfacial area and interfacial interactions between the cathode surface and the microbial biofilm. A 2.3 fold increase in bio-reduction rate over the untreated graphite was observed. Around 282 mM day−1 m−2 of acetate resulting from the bio-reduction of carbon dioxide by Sporomusa was produced with 82 ± 14% of the electrons consumed being recovered in acetate.

Graphical abstract: Improved cathode for high efficient microbial-catalyzed reduction in microbial electrosynthesis cells

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Publication details

The article was received on 27 Jun 2013, accepted on 11 Jul 2013 and first published on 12 Jul 2013


Article type: Paper
DOI: 10.1039/C3CP52697F
Citation: Phys. Chem. Chem. Phys., 2013,15, 14290-14294
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    Improved cathode for high efficient microbial-catalyzed reduction in microbial electrosynthesis cells

    H. Nie, T. Zhang, M. Cui, H. Lu, D. R. Lovley and T. P. Russell, Phys. Chem. Chem. Phys., 2013, 15, 14290
    DOI: 10.1039/C3CP52697F

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