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. 2018 Jul 16;8(45):25361–25367. doi: 10.1039/c8ra04050h

Fig. 5. (a) pH calibration curve of SPE/rGO-PANi electrode. The equilibrium potential increases with decreasing pH due to the protontation of emeraldine base form of polyaniline. pH range 6.0–9.0 (buffered PBS solution). (b) Schematic diagram demonstrating the pH-sensitive mechanism of SPE/rGO-PANi electrode.

Fig. 5