Figure 7

Electrochemical impedance spectra of (a) GC-PIn-Au-SGO, (b) GC-PIn-Au-SGO/Frt/GOx in 0.1 M K4Fe(CN)6 solution at 100 mVs−1 scan rate.
Electrochemical impedance spectra of (a) GC-PIn-Au-SGO, (b) GC-PIn-Au-SGO/Frt/GOx in 0.1 M K4Fe(CN)6 solution at 100 mVs−1 scan rate.