Fig. 5.

(a, b) DPV curves along a CLP gradient (a) Reduction peak and (b) Oxidation peak, and the insert in (a) and (b) were the peak current densities of reduction and oxidation at 0.72 V, respectively; (c) Changes of EPS at different phase with a gradient concentration of CLP disturbance. Error bars represent standard deviations of triplicate measurements.