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Development of a Bioanode for Microbial Fuel Cells Based on the Combination of a MWCNT-Au-Pt Hybrid Nanomaterial, an Osmium Redox Polymer and Gluconobacter oxydans DSM 2343 Cells

Aslan, Sema ; Ó Conghaile, Peter ; Leech, Dónal ; Gorton, Lo LU ; Timur, Suna and Anik, Ulku (2017) In ChemistrySelect 2(36). p.12034-12040
Abstract

In this work, a carbon felt electrode (CFE) was modified with a multiwalled carbon nanotube-gold-platinum (MWCNT-Au-Pt) hybrid nanomaterial and integrated with an osmium redox polymer (OsRP, [Os(2, 2’-bipyridine)2(poly-vinylimidazole)10Cl]Cl) and Gluconobacter oxydans DSM 2343 (G. oxydans) cells. The developed electrode was used as the bioanode in a 5.0 mM K3Fe(CN)6mediator containing phosphate buffer (pH 6.5) anolyte and combined with a Pt wire cathode in phosphoric acid medium (pH 3.5). As a result, a two chamber microbial fuel cell (MFC) was formed, in which an activated Nafion membrane was used as a proton exchange membrane. The OsRP/G.oxydans/MWCNT-Au-Pt/CFE based bioanode was... (More)

In this work, a carbon felt electrode (CFE) was modified with a multiwalled carbon nanotube-gold-platinum (MWCNT-Au-Pt) hybrid nanomaterial and integrated with an osmium redox polymer (OsRP, [Os(2, 2’-bipyridine)2(poly-vinylimidazole)10Cl]Cl) and Gluconobacter oxydans DSM 2343 (G. oxydans) cells. The developed electrode was used as the bioanode in a 5.0 mM K3Fe(CN)6mediator containing phosphate buffer (pH 6.5) anolyte and combined with a Pt wire cathode in phosphoric acid medium (pH 3.5). As a result, a two chamber microbial fuel cell (MFC) was formed, in which an activated Nafion membrane was used as a proton exchange membrane. The OsRP/G.oxydans/MWCNT-Au-Pt/CFE based bioanode was electrochemically examined in differently deoxygenated bioanode chambers and additionally the amounts of hybrid nanomaterial and OsRP were optimized. In terms of MFC characteristics, it was found that an anaerobic OsRP/G.oxydans/MWCNT-Au-Pt/CFE bioanode based MFC had a maximum power density of 32.1 mW m-2(at 90 mV), a maximum current density of 1032 mA m-2and a charge transfer efficiency (E%) value of 22.30 (open circuit potential 180 mV).

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Gluconobacter oxydans, hybrid nanomaterial microbial fuel cells, osmium redox polymer
in
ChemistrySelect
volume
2
issue
36
pages
7 pages
publisher
Wiley-Blackwell
external identifiers
  • scopus:85041724514
ISSN
2365-6549
DOI
10.1002/slct.201702868
language
English
LU publication?
yes
id
3c956fee-6bdd-4610-8ef6-da3e8b80f718
date added to LUP
2018-02-22 13:28:18
date last changed
2022-03-25 00:17:56
@article{3c956fee-6bdd-4610-8ef6-da3e8b80f718,
  abstract     = {{<p>In this work, a carbon felt electrode (CFE) was modified with a multiwalled carbon nanotube-gold-platinum (MWCNT-Au-Pt) hybrid nanomaterial and integrated with an osmium redox polymer (OsRP, [Os(2, 2’-bipyridine)<sub>2</sub>(poly-vinylimidazole)<sub>10</sub>Cl]Cl) and Gluconobacter oxydans DSM 2343 (G. oxydans) cells. The developed electrode was used as the bioanode in a 5.0 mM K<sub>3</sub>Fe(CN)<sub>6</sub>mediator containing phosphate buffer (pH 6.5) anolyte and combined with a Pt wire cathode in phosphoric acid medium (pH 3.5). As a result, a two chamber microbial fuel cell (MFC) was formed, in which an activated Nafion membrane was used as a proton exchange membrane. The OsRP/G.oxydans/MWCNT-Au-Pt/CFE based bioanode was electrochemically examined in differently deoxygenated bioanode chambers and additionally the amounts of hybrid nanomaterial and OsRP were optimized. In terms of MFC characteristics, it was found that an anaerobic OsRP/G.oxydans/MWCNT-Au-Pt/CFE bioanode based MFC had a maximum power density of 32.1 mW m<sup>-2</sup>(at 90 mV), a maximum current density of 1032 mA m<sup>-2</sup>and a charge transfer efficiency (E%) value of 22.30 (open circuit potential 180 mV).</p>}},
  author       = {{Aslan, Sema and Ó Conghaile, Peter and Leech, Dónal and Gorton, Lo and Timur, Suna and Anik, Ulku}},
  issn         = {{2365-6549}},
  keywords     = {{Gluconobacter oxydans; hybrid nanomaterial microbial fuel cells; osmium redox polymer}},
  language     = {{eng}},
  number       = {{36}},
  pages        = {{12034--12040}},
  publisher    = {{Wiley-Blackwell}},
  series       = {{ChemistrySelect}},
  title        = {{Development of a Bioanode for Microbial Fuel Cells Based on the Combination of a MWCNT-Au-Pt Hybrid Nanomaterial, an Osmium Redox Polymer and Gluconobacter oxydans DSM 2343 Cells}},
  url          = {{http://dx.doi.org/10.1002/slct.201702868}},
  doi          = {{10.1002/slct.201702868}},
  volume       = {{2}},
  year         = {{2017}},
}