Fig. (8) (a) Cyclic Voltammogram for 0.1 mM of HQ in 0.1 M PBS (pH 7) at BGPE (dashed line) and PAMGPE (solid line) with the scan rate of 0.1 V/s, (b) Cyclic Voltammogram of HQ at PAMGPE in 0.1 M PBS (pH 7) at different scan rates (0.1 to 0.250 V s⁻¹⁾, (c) Ipa Vs scan rate (mVs^-1).