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. 2018 Oct 25;10(11):1191. doi: 10.3390/polym10111191

Figure 2.

Figure 2

(a) Cyclic voltammetry of P1 in citric acid buffer (pH = 2.0) at 25, 50, 75, and 100 mV s−1. (b) The electrochemical cycling of P1 in citric acid buffer (pH = 2.0) at 25 mV s−1. (c) The normalized peak currents vs. the number of cycles, with normalized peak currents obtained by dividing each cycle’s peak currents over the first cycle’s peak currents.