A Highly Sensitive Electrochemical Sensor for Cd2+ Detection Based on Prussian Blue-PEDOT-Loaded Laser-Scribed Graphene-Modified Glassy Carbon Electrode

Heavy metal ion pollution has had a serious influence on human health and the environment. Therefore, monitoring of heavy ions is great practical significance. In this work, we describe development an electrochemical sensor to detect cadmium (Cd2+) using Prussian blue (PB), poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT)-loaded laser-scribed graphene (LSG) nanocomposite-modified glassy carbon electrode (GCE). nanocomposite material, successfully brought together advantages extraordinarily large surface area. The accumulation PB nanoparticles results in efficient with high sensitivity selectivity fast detection ability, developed for trace-level Cd2+. Electrochemical features were explored via cyclic voltammetry (CV), whereas stripping behavior modified electrodes was analyzed by utilizing differential pulse voltammetry. Compared bare GCE, LSG/PB-PEDOT/GCE greatly increased anodic peak currents Under optimized conditions, direct facile Cd2+ achieved wide linear range (1 nM–10 µM) low LOD (0.85 nM).