Novel Synthesis and Fabrication of CuO/RGO Composite Modified Electrode for Selective Electrochemical Determination of Environmental Pollutant Para-Aminophenol in Water and Fruit Sample

Carbon-based nanomaterials such as graphite and their oxides have attracted extensive attention in many areas, especially in organic synthesis, electrochemistry, and catalytic chemistry. In this context, we report new eco-friendly preparation of copper oxide/reduced graphene oxide nanocomposite (CuO/RGO) based para-Aminophenol (PAP) electrochemical sensor. The synthesized nanocomposites were characterized by X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), Energy dispersive X-ray spectrometry (EDS) and field emission scanning electron microscope study (FESEM). The electrocatalytic behavior of PAP at the surface of CuO/RGO nanocomposite on screen-printed carbon electrode (SPCE) were investigated in detail. Combining CuO and RGO intensifies the property and performance of the nanocomposite due to coactive effects between RGO nano-sheet and CuO nanoparticles. Herein, PAP was used as a probe to appraise the electrocatalytic activities of the CuO/RGO modified electrode. In this study, we were able to obtain a detection limit (LOD) of 0.02µM and a wide linear concentration range (LR) from 0.01µM to 478.1µM for PAP. The nanocomposite exhibits excellent and stable electrocatalytic activity towards the PAP determination.