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. 2023 Jan 9;8(3):3258–3269. doi: 10.1021/acsomega.2c06791

Figure 3.

Figure 3

(a) Cyclic voltammogram measuring 1.5 × 10–3 M hydrazine with phosphate buffer at pH 7 and pH 10 obtained with ErGO/PEDOT:PSS/GCE; (b) cyclic voltammogram at a scan rate of 100 mV s–1 of 0.1 M pH 7 phosphate buffer and 1.5 × 10–3 M hydrazine in 0.1 M phosphate buffer at pH 7, measured using bare GCE and ErGO/PEDOT:PSS/GCE; (c) schematic illustration of the interaction between electrochemically reduced graphene oxide (ErGO) with PEDOT:PSS and (d) of the interaction between the hydrazinium cation with the ErGO/PEDOT:PSS composite on the surface of glassy carbon electrode (GCE); (e) mechanism of hydrazine oxidation at the surface of ErGO/PEDOT:PSS/GCE, (f) Nyquist plot obtained for three different electrodes (bare GCE, GO/PEDOT/GCE, and ErGO/PEDOT:PSS/GCE) for measuring 1 mM K3[Fe(CN)6] in 0.1 M KCl solution at a frequency range from 1 × 106 to 5 × 103 Hz, Edc = 0 V, Eac = 10 mV at an open circuit potential.