THE STUDY ON THE ELECTROCHEMICAL-BEHAVIOR OF NILE-BLUE-A MODIFIED CARBON-FIBER MICROCYLINDER ELECTRODE

The functional group -COOH on carbon fiber microcylinder electrode(CFMCE) was formed by electrochemical oxidation with cyclic voltammetry, and the Nile blue modified CFMCE was manufactured by means of electrostatic-attraction. The electrochemical behaviour of the modified electrode was studied, and its stability was discussed. The apparent standard electron transfer rate constant and charge transfer coefficient of fixed Nile blue A at various pH, and the number of H+ participating in electrode reaction were determined. The experiments indicated the modified electrode can catalyze the electrode reaction of hemoglobin at carbon fiber microcylinder electrode.