Supplementary material for: "A Voltammetric Sensor Based on MgFe2O4 Decorated on Reduced Graphene Oxide-modified Electrode for Sensitive and Simultaneous Determination of Catechol and Hydroquinone"

Abstract

Fig. S1 Log-normal distribution function from fitting the TEM particle size data. Fig. S2 EDS mapping for MgFe@RGO composite. Fig. S3 CV voltammograms of: (A) different CC concentration in presence of constant HQ concentration in solution; (B) different HQ concentration in presence of constant CC concentration in solution; (C) different CC and HQ concentrations. Supporting electrolyte Ac-buffer, scan rate 100 mV/s. working electrode MgFe@RGO composite modified electrode. Fig. S4 CV voltammograms of CC and HQ at various scan rates in the range from 10 to 200 mV/s. Supporting electrolyte Ac-buffer, working electrode MgFe@RGO composite modified electrode. Dependence of peak currents and square root of the scan rate (inset). Fig. S5 DPV voltammogram in the presence of 0.1 mM of both analytes.