One-step electrochemically synthesized graphene oxide coated on polypyrrole nanowires as anode for microbial fuel cell
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A novel polypyrrole nanowires coated by graphene oxide (PPy-NWs/GO) has been successfully synthesized by one-step electrochemical method, whose structure was different from previously reported PPy/GO composites. The microbial fuel cell equipped with PPy-NWs/GO as anode was fabricated and compared with PPy-NWs ones. The SEM images show that the synthesized PPy-NWs/GO materials possess more surface areas than PPy-NWs. The electrochemical analysis indicated that PPy-NWs/GO anode had lower charge transfer resistance, which may be attributed to synergistic effect of them. The MFC equipped with PPy-NWs/GO anode have higher circle voltages and the power density is about 22.3 mW/m2, which is great higher than that of PPy-NWs about 15.9 mW/m2. These improvements of the MFCs may be due to more bacteria on the larger biofilms based on GO nanosheets, indicating that the PPy-NWs/GO is more effective anode for improving electricity generation.
KeywordsMicrobial fuel cell Polypyrrole nanowires Graphene oxide Anode Shewanella oneidensis MR-1
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On behalf of all authors, the corresponding author states that there is no conflict of interest.
- Gorby YA, Yanina S, McLean JS, Rosso KM, Moyles D, Dohnalkova A, Beveridge TJ, Chang IS, Kim BH, Kim KS, Culley DE, Reed SB, Romine MF, Saffarini DA, Hill EA, Shi L, Elias DA, Kennedy DW, Pinchuk G, Watanabe K, Ishii S, Logan B, Nealson KH, Fredrickson JK (2009) Electrically conductive bacterial nanowires produced by Shewanella oneidensis strain MR-1 and other microorganisms (vol 103, pg 11358, 2006). Proc Natl Acad Sci USA 106(23):9535–9535. https://doi.org/10.1073/pnas.0903426106 Google Scholar
- Hermsdorf N, Stamm M, Forster S, Cunis S, Funari SS, Gehrke R, Muller-Buschbaum P (2005) Self-supported particle-track-etched polycarbonate membranes as templates for cylindrical polypyrrole nanotubes and nanowires: an X-ray scattering and scanning force microscopy investigation. Langmuir 21(25):11987–11993. https://doi.org/10.1021/la0515975 CrossRefGoogle Scholar