Surface etched carbon nanofiber companied ytterbium oxide for pinch level detection of fungicides carbendazim

The usage of a ytterbium oxide nanorod/carbon nanofiber (Yb2O3/f-CNF) hybrid nanocomposite for the elec-trochemical detection of carbendazim (CBZ) fungicide is demonstrated for the first time in this study. Various physicochemical methods such as Field Emission Scanning Electron Microscopy (FE-SEM), Transmission electron microscopy (TEM), and X-ray diffraction (XRD) spectroscopy have been used to confirm the formation of Yb2O3, f-CNF, and Yb2O3/f-CNF composite. Different electrode electrochemical characteristics for the detection of CBZ were investigated using cyclic voltammetry and differential pulse voltammetry. Compared to Yb2O3 and f-CNF, the Yb2O3/f-CNF nanocomposite had the most significant electrocatalytic activity for CBZ oxidation. The designed sensor has a low detection limit (6 nM) and an extensive linear range (50 nM to 3035 mu M) with excellent sensitivity (0.2899 mu A mu M-1 cm-2). Furthermore, the sensor has shown outstanding stability, anti -interference ability, reproducibility, repeatability, and practicability. In addition, these sensor electrodes are simple to make, inexpensive, portable, and effective in detecting CBZ fungicide residues in food and the environment.

Automated summary

This study demonstrates the use of a ytterbium oxide nanorod/carbon nanofiber (Yb2O3/f-CNF) hybrid nanocomposite for electrochemical detection of carbendazim (CBZ) fungicide. Various physicochemical methods have been used to confirm the formation of the composite. The Yb2O3/f-CNF nanocomposite exhibits superior electrocatalytic activity for CBZ oxidation compared to Yb2O3 and f-CNF. The designed sensor has high sensitivity, low detection limit, wide linear range, and excellent stability and reproducibility.