Journal
ELECTROCHIMICA ACTA
Volume 354, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2020.136715
Keywords
Microbial fuel cell; Poly(3-aminophenylboronic acid); Boronic acid-saccharide interactions; Biofilm density; Extracellular electron transfer
Categories
Funding
- National Natural Science Foundation of China [21305041, 21675050, 21705045 and21775041]
- Science and Technology Innovation Project of Hunan Province [2018RS3062]
- Natural Science Foundation of Hunan Province [2019JJ50385, 2018JJ2252]
- Science and Technology Project of Changsha [KQ1905028]
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We report here that the electricity generation of Shewanella putrefaciens in a microbial fuel cell (MFC) can be greatly boosted by modification of a porous poly(3-aminophenylboronic acid) (p-PAPBA) film on carbon cloth (CC) anode. The p-PAPBA/CC electrode was prepared by electropolymerization of 3-aminophenylboronic acid on SiO2 nanoparticles modified CC electrode, followed by HF leaching. The boronic acid-saccharide interactions between p-PAPBA film and bacterial cell surfaces enabled rapid biofilm growth and increased biofilm density, and the porous structure of p-PAPBA film facilitated the mediated extracellular electron transfer of Shewanella putrefaciens via self-secreted flavins, all of which resulted in promoted electricity generation of Shewanella putrefaciens in the MFC. A maximal power density of 928 +/- 20 mW m(-2) was generated by the MFC using the p-PAPBA/CC anode, which was 4.4-fold that of the MFC using the CC anode. This study provides a promising way to promote the electricity generation of Shewanella putrefaciens in MFCs by making full use of the boronic acid-saccharide interactions. (C) 2020 Elsevier Ltd. All rights reserved.
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