Fig. 6. (A) CVs and (B) EIS spectra of 5.0 mM K3[Fe(CN)6] in 1.0 M KCl at the GCE (a) and at the PTPCNs/GCE (b). The upper left side of (B) shows the Randel circuit, whereas the lower left inset shows the magnified EIS of the PTPCNs/GCE.
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