Facile Synthesis of Copper-Coated-Reduced-Graphene-Oxide and Its Application as a Highly Sensitive Electrochemical Sensor for Hydroquinone

A facile step-by-step approach for synthesizing copper nanoparticles (CuNPs) loaded on the wrinkled surface of reduced-graphene-oxide (Cu/rGO) was conducted using a reductant at room temperature. Multiple characterization methods were applied to specify morphology and composition nanocomposites. The scanning electron microscope transmission Cu/rGO show that spherical CuNps dispersed uniformly rGO. In addition, characteristic peaks Cu carbon in energy dispersive X-ray spectroscopy photoelectron analyses spectra proved nanocomposites synthesized. Soon afterwards, new hydroquinone electrochemical sensor prepared with glassy electrode. characterized by cyclic voltammetry impedance spectroscopy. Hydroquinone detected differential pulse composite Under optimal condition, linear response range from 0.05 μM 90 μM; detection limit is 0.02 (S/N = 3) hydroquinone. exhibited high sensitivity practical environmental water sample detection.