Abstract
An electrochemical sensor for rapid detection of sulfamethoxazole (SMZ) was constructed by glassy carbon electrode (GCE) modified with Ag/g-C3N4 nanomaterials. The morphology and structure of this sensor were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared spectoscopy (FT-IR). The effects of scanning rate and pH on the electrochemical response were investigated. The Ag/g-C3N4/GCE sensor showed that the Ag/g-C3N4/GCE sensor had a low detection limit, high recovery, and good selectivity. The recovery rate of real water samples was between 94.2% ∼ 104.6%, and the relative standard deviation (RSD) was between 0.54% ∼ 4.29%. This innovative electrode proved to be a sensor for sensitive and accurate estimation of SMZ content in water samples.
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