Electron transfer from sulfate-reducing becteria biofilm promoted by reduced graphene sheets

Yi Wan; Dun Zhang; Yi Wang; Jiajia Wu

doi:10.1007/s00343-012-1018-x

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Electron transfer from sulfate-reducing becteria biofilm promoted by reduced graphene sheets

Updated：2023-05-16

- Electron transfer from sulfate-reducing becteria biofilm promoted by reduced graphene sheets
- Journal of Oceanology and Limnology Vol. 30, Issue 1, Pages: 12-15(2012)
- Affiliations：
  
  1. Key Laboratory of Corrosion Science Shandong Province Institute of Oceanology Chinese Academy of Sciences
  2. Graduate University of Chinese Academy of Sciences
- Author bio：
- Funds：
- DOI：10.1007/s00343-012-1018-x
  CLC：
- Online First：19 August 2011，
  
  Published：2012
- Accepted：
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Wan, Y., Zhang, D., Wang, Y. et al. Electron transfer from sulfate-reducing becteria biofilm promoted by reduced graphene sheets., Chin. J. Ocean. Limnol. 30, 12–15 (2012). https://doi.org/10.1007/s00343-012-1018-x
DOI：

Wan, Y., Zhang, D., Wang, Y. et al. Electron transfer from sulfate-reducing becteria biofilm promoted by reduced graphene sheets., Chin. J. Ocean. Limnol. 30, 12–15 (2012). https://doi.org/10.1007/s00343-012-1018-x DOI：

摘要

Abstract

Reduced graphene sheets (RGSs) mediate electron transfer between sulfate-reducing bacteria (SRB) and solid electrodes

and promote the development of microbial fuel cells (MFC). We have investigated RSG-promoted electron transfer between SRB and a glassy carbon (GC) electrode. The RGSs were produced at high yield by a chemical sequence involving graphite oxidation

ultrasonic exfoliation of nanosheets

and N2H4 reduction. Cyclic voltammetric testing showed that the characteristic anodic peaks (around 0.3 V) might arise from the combination of bacterial membrane surface cytochrome c3 and the metabolic products of SRB. After 6 d

another anodic wave gradually increased to a maximum current peak and a third anodic signal became visible at around 0 V. The enhancements of two characteristic anodic peaks suggest that RSGs mediate electron-transfer kinetics between bacteria and the solid electrode. Manipulation of these recently-discovered electron-transport mechanisms will lead to significant advances in MFC engineering.

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references

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