Towards a high potential biocathode based on direct bioelectrochemistry between horseradish peroxidase and hierarchically structured carbon nanotubes

Literature Information

Publication Date 2010-07-27
DOI 10.1039/C0CP00349B
Impact Factor 3.676
Authors

Wenzhi Jia, Stefanie Schwamborn, Chen Jin, Wei Xia, Martin Muhler, Wolfgang Schuhmann, Leonard Stoica


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Abstract

Adsorption of horseradish peroxidase (HRP) on graphite rod electrodes sequentially modified with carbon microfibers (CMF) carrying carbon nanotubes in a hierarchically structured arrangement and finally pyrene hexanoic acid (PHA) for improving hydrophilicity of the electrode surface is the basis for the direct bioelectrocatalytic reduction of H2O2 at potentials as high as about +600 mV. The high-potential direct bioelectrocatalytic reduction of H2O2 is implying a direct bioelectrochemical communication between the FeIVO,P+˙ redox state known as compound I. The HRP loading was optimized leading to a current of 800 μA at a potential of 300 mV.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
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