Journal
CATALYSTS
Volume 10, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/catal10070782
Keywords
cyclic voltammetry; electrochemical impedance spectroscopy; carbon nanotubes; redox mediators
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Funding
- Ministry of Science and Technology of Taiwan [MOST 107-2218-E-155-001]
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The main objective of this study was to examine the quantitative performance of the electrochemical redox reaction of glucose by glucosidase and oxygen with laccase in a phosphate buffer solution at pH 7.0. The characterization of electrode performance was performed by using electrochemical analysis such as cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The use of such electrochemical analysis (CV and EIS) enables a better understanding of the redox process, the charge transfer resistance, and, hence, the potential mass transfer among the electrode materials in phosphorus buffer solution. The experimental results show that the maximum power densities of the bioanode and the biocathode electrodes were 800 mu A/cm(2)and 600 mu A/cm(2), respectively. Both the bioanode and biocathode show high internal resistance. The occurrence of peak-separation shows an excellent mass-transfer mechanism and better chemical reactivity in the electrode.
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