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The role of structural iron in clays to enhance the electron transfer of Shewanella Oneidensis MR-1 was investigated. Three types of clays containing different amounts of iron situated in the octahedral sites have been used to modify the ITO electrodes: nontronite NAu-1, montmorillonite (Wyoming) SWy-1, and synthetic montmorillonite SYn-1.

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What they did

System
MFC

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Abstract

The role of structural iron in clays to enhance the electron transfer of Shewanella Oneidensis MR-1 was investigated. Three types of clays containing different amounts of iron situated in the octahedral sites have been used to modify the ITO electrodes: nontronite NAu-1, montmorillonite (Wyoming) SWy-1, and synthetic montmorillonite SYn-1. The interaction between bacterial cells and the clay, which modified the ITO electrodes were studied by potential step, cyclic voltammetry, confocal microscope, and scanning electron microscope SEM. Experimental results showed that the current density generated using iron containing clays NAu-1 and SWy-1 to modify the ITO electrode was 19 and 3 times higher than that produced using the bare ITO electrode. Mechanism of electrochemical production deviated for the iron containing clay NAu-1 Keywords Shewanella Oneidensis MR-1, Clay, Modified ITO electrode, MFC

Key findings

  • The role of structural iron in clays to enhance the electron transfer of Shewanella Oneidensis MR-1 was investigated.
  • Experimental results showed that the current density generated using iron containing clays NAu-1 and SWy-1 to modify the ITO electrode was 19 and 3 times higher than that produced using the bare ITO electrode.

Keywords

Shewanella oneidensisNontroniteElectrodeElectron transferScanning electron microscopeElectrochemistry

Identifiers

DOI
10.1149/ma2020-01472688mtgabs
Journal
ECS Meeting Abstracts
Year
2020