Eco-friendly Synthesis of Silver-Doped Reduced Graphene Oxide Nanocomposite, The Characterization, and Evaluation of Electrochemical Activity

In this study, Pers., which is an important holoparasite plant, was used for green synthesis of reduced graphene oxide silver nanocomposites (rGO-AgNCs). The obtained rGO-AgNCs were characterizated using UV–Vis spectroscopy, Fourier transformation infrared spectroscopy (FT-IR), X-Ray diffractiometer (XRD), Scanning electron microscope (SEM), Transmission electron microscope (TEM), and X-Ray photoelectron spectroscopy (XPS). The synthesized rGO-AgNCs structure were used to modify carbon paste electrode (rGO-AgNCs@CPE) for electrochemical determination of metronidazole (MNZ). It was observed that the obtained rGO-AgNCs@CPE showed higher sensitivity in MNZ determination than the unmodified CPE, and DPV measurements showed a low detection limit of 0.039 μM over a linear concentration range of 5–300 μM. Real sample analysis of the proposed sensor shows that it responds well in MNZ analysis of human urine.