▎ 摘　　要

In present work, a novel and facile electrode was constructed using the modification of carbon paste electrode (CPE) with N-doped reduced graphene oxide/CuO (N-rGO/CuO) and ionic liquid (IL) for electrochemically determination of 2-aminophenol. The N-rGO/CuO structure and morphology were investigated successfully employing Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, field-emission scanning electron microscopy, and X-ray diffraction. Synergistic impact of N-rGO/CuO nanocomposite with IL could enhance electron transfer rate, highlighting greater catalytic activity of as-produced sensor towards the 2-aminophenol oxidation. According to results from differential pulse voltammetry (DPV), a linear relationship was found between peak currents and different 2-aminophenol concentrations in the range 0.1-700.0 mu M, with small limit of detection (0.025 mu M). In addition, the prepared sensor was used to determine 2-aminophenol and bisphenol A simultaneously via DPV. The N-rGO/CuO/ILCPE separates the oxidation peak potential of 2-aminophenol and bisphenol A by 320 mV. Furthermore, the sensor could excellently determine 2-aminophenol and bisphenol A in the water samples, and it showed a very high recovery percentage.