Electrochemical sensor based on MWCNTs/Co3O4/SPGE for simultaneous detection of Sudan I and Bisphenol A

This paper presents a sensitive simultaneous detection procedure for Sudan I and bisphenol A based on the multiwalled carbon nanotubes (MWCNTs)/Co3O4 nanocomposite modified screen-printed graphite electrode (SPGE). MWCNTs/Co3O4 was prepared by hydrothermal technique, characterized Fourier transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy (FE-SEM) X-ray diffraction (XRD). The electrochemical properties of SPGE were analyzed cyclic voltammetry (CV), differential pulse (DPV), chronoamperometry (CHA), as well linear sweep (LSV). From results, synergy between MWCNTs Co3O4 nanoparticles (NPs) detected improved interfacial transfer, which accompanied greater catalytic function oxidation I. Based optimized condition, MWCNTs/Co3O4/SPGE exhibited dynamic ranging 0.05 600.0 μM with limit (LOD) 0.02 μM. Also, as-prepared assessed Bisphenol A. In course electrooxidation processes these analytes, two complete peaks at 380 520 mV observed electrode. At end, utility this new sensor performed to determine in some real samples good accuracy precision.