Fig. 7
(a) Square-wave voltammograms recorded on NiCo2O4/GC electrode in 0.1 M NaOH supporting electrolyte, in the presence of various DCF concentrations: 3.4–24 µM, SP of 50 mV, MA of 100 mV, f = 10 Hz. Inset: Calibration plots for DCF detection in the concentration range 3.4–24 µM recorded at the potential value of E = + 0.600 V/SCE. (b) Differential-pulse voltammograms recorded on NiCo2O4/GC electrode in 0.1 M NaOH supporting electrolyte, in the presence of various DCF concentrations: 0.34–8.14 µM, SP of 50 mV and MA of 100 mV. Inset: Calibration plots for DCF detection in the concentration range of 0.34–8.14 µM recorded at the potential value of E = + 0.630 V/SCE.
