Mxene-derived Na2O7Ti3 nanoribbon as a promising electrode material for the detection of ethyl paraoxon in complex matrices

[Display omitted] •This research introduces a novel electrochemical sensor for detecting ethyl paraoxon, a hazardous pesticide, in food samples. The sensor utilizes sodium titanate nanoribbons (MNR) derived from titanium carbide (Ti3C2) MXene, marking the first report of such an application for MXene derivatives.•The MNRs were synthesized through a facile hydrothermal method, and their structure and composition were confirmed using various techniques like powder XRD, FE-SEM, EDS, HR-TEM, and SAED.•The research then explores the electrochemical properties of the MNRs for ethyl paraoxon detection using cyclic voltammetry (CV), linear sweep voltammetry (LSV), and differential pulse voltammetry (DPV).•The developed sensor demonstrates impressive performance with a remarkably low limit of detection (LOD) of 0.22 nM, a wide detection range spanning from 0.69 nM to 174.03 nM, and a high sensitivity of 0.707 µA/nM/cm2. Furthermore, the sensor effectively detects ethyl paraoxon even in complex matrices like vegetable extracts from tomatoes and beans.•This research paves the way for utilizing MXene-derived nanoribbons for practical applications in food safety monitoring. The facile synthesis, excellent sensitivity, and ability to detect pesticides in real-world samples make this sensor a promising candidate for ensuring food quality. This study reports the development of MXene (Ti3C2Tx) derived sodium titanate nanoribbon-based electrochemical sensor for pesticide detection. Titanium Carbide (Ti3C2) MXene-derived sodium titanate nanoribbon (MNR) was obtained by facile hydrothermal synthesis and characterized by powder X-ray Diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray analysis(EDS) and, high-resolution transmission electron microscopy (HR-TEM). The synthesized water-dispersed MNR was stabilized with Nafion and deposited on the surface of glassy carbon electrodes (GCE), which provide a symmetrical uniform electrode surface. Further, the electrodes were electrochemically characterized with cyclic voltammetry (CV), differential pulse voltammetry (DPV), linear sweep voltammetry(LSV), and electrochemical impedance spectroscopy (EIS). The electrochemical sensing of ethyl paraoxon was carried out in 0.1 M phosphate buffer (PB) by CV, LSV, and DPV. The developed electrochemical sensor exhibited a limit of detection (LOD) of 0.22 nM, a very wide detection range from 0.69 nM to 174.03 nM, and a reliable sensitivity of 0.707 µ