Mn/Cu Nanoparticles Modified Carbon Paste Electrode as a Novel Electrochemical Sensor for Nicotine Detection

Abstract

Abstract A novel, cheap and economical electrochemical sensor for nicotine (NIC) revealing is prepared by setting down for Manganese/copper nanoparticles (Mn/Cu NPs) on the surface of carbon paste electrode (CPE). This sensor demonstrated good electrocatalytic activities to anodic oxidation of NIC in Potassium Phosphate Buffer solution (0.1 M) of pH range (4.0–10.0). The electrochemical description of MCMCPE is carried out by means of cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) techniques. Scanning electron microscope (SEM) and Energy Dispersive X‐Ray Analysis (EDX) techniques were utilized for studying the surface morphology. The developed sensor is found to show a linear response in the concentration range 2×10 −6 –6×10 −4 M with a Limit of Detection (LOD) of 1.15×10 −7 M. Furthermore, the sensor exhibits high sensitivity and stability for sensing NIC in urine and tobacco samples.