Carbon Nanomaterial-Promoted Direct Electron Transfer

3 Carbon Nanomaterial-Promoted Direct Electron Transfer 

Carbon cloth Bacteria-entrapped carbon nanoparticle paste on the carbon cloth Carbon cloth Proteus vulgaris Two-chamber MFC Glucose P.D. = 269 mW m P.D. = 20 mWm 117 

Plain carbon paper CNT powders Plain carbon paper Geohacter sul-furreducens Two-chamber MFC Sodium acetate Anodic resistances = 173 Q output voltage = 650 mV 118 

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In particular, redox chemicals (serving as electron shuttles) naturally synthesized by bacteria or exogenously added synthetic molecules have been proved to be directly involved in promoting extracellular electron transfer between the cells and the electrode. Moreover, electrode modification with conductive polymers or carbon nanomaterials showed great potential for the enhancement of nanoscale topological interactions and hence the extracellular electron transfer between the cells and the electrode.Extracellular electron transfer manipulation (a microbial process) with chemical electron shuttles or electrode modifiers can be considered as a typical application of chemical bioengineering. 

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