Communication—Electrochemical Single Nano-Impacts of Electroactive Shewanella Oneidensis Bacteria Onto Carbon Ultramicroelectrode
JOURNAL OF THE ELECTROCHEMICAL SOCIETY(2020)
摘要
Electrochemical single nano-impacts of electroactive Shewanella oneidensis bacteria at a 7 μm diameter carbon fibre ultramicroelectrode in an aqueous potassium phosphate buffer (pH = 7.2) solution containing a redox active probe (potassium ferro- or ferricyanide) is reported. We present chronoamperometric measurements recorded at the ultramicroelectrode polarized at the potential of the steady-state current of the redox probe in solution (oxidation for K4Fe(CN)6 or reduction for K3Fe(CN)6) in the presence of bacteria. The shape of current transients associated to single bacteria nano-impacts is compared and discussed as a function of the redox probe in solution and of the ultramicroelectrode applied potential.
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关键词
Electrogenic Bacteria,Scanning Electrochemical Microscopy,Electrochemical Biosensors,Shewanella and Geobacter
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