Electrochemical Detection of Metronidazole by the Fabricated Composites of Orthorhombic Iron Tungsten Oxide Decorated with Carbon Nanofiber Composites Electrode

Abstract

Metronidazole (MTD) is a common antibiotic used to treat various pathogens and protozoal infections in humans and domestic animals. This drug is, however, prohibited in various countries owing to its extremely precarious properties. Hence, the low-limit detection of MTD in the environment is more important because it is very impactful and affects human health. Iron tungstate (Fe2WO6) has been produced by the hydrothermal method and the carbon nanofibers (CNF) prepared from the electrospinning technique. After that, CNF/Fe2WO6 composite decorated glassy carbon electrode (GCE) was used for the electrochemical detection of MTD. Here, the different physicochemical characterization studies were used to confirm the CNF/Fe2WO6 composite. Moreover, electrochemical impedance spectroscopy, cyclic voltammetry studies, and differential pulse voltammetry have been used for the electrochemical studies of modified electrodes. The electrochemical results of GCE/CNF/Fe2WO6 electrodes exhibited an excellent electrochemical response at -0.5 V. The MTD detection limit has been calculated by the very low detection limit concentrations (0.013 μM). Further, the GCE/CNF/Fe2WO6 electrodes performed at high sensitivity (1.55 μA μM−1 cm-2) with a wide linear range (0.01-1792 μM). Besides, the GCE/CNF/Fe2WO6 have excellent repeatability, reproducibility, stability, and real sample analysis performances.

Construction of Nickel Tungsten Oxide Anchored Carbon Nanofibers Modified with Glassy Carbon Electrode for Enhanced Electrochemical Detection of Metronidazole in Urine and Environmental Water Sample

“…The final powder of NiWO 4 nanomaterial was collected and was also calcined at 500 °C for three hours. 46 Finally, the obtained NiWO 4 material has been incorporated with CNF to construct a CNF/NiWO 4 composite. Further, the prepared CNF/NiWO 4 composite has been used for the electrochemical identification of MTD as shown in Scheme 1.…”

Tetrahedrally Structured CaMoO4 Nanospheres on Heteroatom-Doped Carbon Nanotubes for Sensitive Food Additive Electrochemical Sensors

“…In Figure e, binding energy peak locations for C 1s are shown at 284.78, 286.18, and 289.48 eV, which correspond to C–C, C–O, and CO. P 2p spectra absorbed three peaks (Figure f), representing 133.80 eV spectra of P–C, 136.60 eV spectra of P–O, and 135.5 eV spectra of PO. ,,, …”

Development of an electrochemical sensor based on a barium-doped copper oxide anchored carbon black modified glassy carbon electrode for the detection of Metol

“…Therefore, the electrochemically active surface area (ECSA) of surface unmodified and modified electrodes can be determined using the Randles–Sevcik equation. 38 I p = (2.69 × 10 5 )· n 3/2 · A . D 1/2 · C · v 1/2 …”