Figure 2
(a) Nyquist plots and (b) semicircle diameters from EIS characterization of electrodes modified with different materials in 0.01 M PBS (pH = 7.0) containing 5 mM [Fe(CN)6]3−/4− and 0.1 M KCl: (a-1) GE, (b-1) GE-G-Chi-PtNP, (c-1) GE-G-Chi-AuNP, (d-1) GE-G-Chi-Au/PtNP. Error bar = RSD ( n = 5).
