Figure 5: (a) Typical cyclic voltammograms of Hb/Mn2O3-Ag nanofibers/glassy carbon electrode at different scan rates. The voltammograms (from inner to outer) designate scan rates of 50, 100, 200, 300, 400, and 500 mV s−1, respectively. (b) Dependence of the anodic and cathodic peak currents on the scan rates the red line is cathodic and the blue line is anodic. (c) Relationship between the peak potential () and the natural logarithm of scan rate () for Hb/Mn2O3-Ag nanofibers/glassy carbon electrode. All the data were obtained at pH 7.0 and in 0.1 M phosphate buffer solution.