Development of a novel electrochemical sensor using the FeNi3/CuS/BiOCl nanocomposite for determination of naproxen

This study designed an electrochemical sensor to determine naproxen (NPX) via modification of a carbon paste electrode (CPE) with the FeNi 3 /CuS/BiOCl nanocomposite. Therefore, scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy-dispersive X-ray spectroscopy (EDS) analyses characterizes the morphology and chemical compositions of FeNi 3 /CuS/BiOCl as a novel nanocomposite. In addition, differential pulse voltammetry (DPV) and cyclic voltammetry (CV) have been used to analyze the electro-analytical function of FeNi 3 /CuS/BiOCl/CPE toward oxidizing the NPX. According to the findings, our sensor had reasonable potent of sensing NPX with a linear range of 0.2–500.0 µM and a limit of detection (LOD) of 0.06 µM. Finally, functional utility of our new modified electrode has been utilized to analyze the NPX in the urine, NPX tablet and water samples with acceptable recovery.