Synergistic electrochemical sensing of 2,4-dinitrotoluene via bimetallic nickel-cobalt oxide nanoparticles

• DOI: 10.1016/j.chphi.2024.100470
• Publication Date: 2024-01-09T16:21:49Z
• Authors: Bharti Sharma; Shikha Jain; Ahmad Umar; Sushma Rani; Sandeep Kumar; Ahmed A. Ibrahim; Neeraj Dilbaghi
• Keywords: Bimetallic strip; Electrochemical gas sensor

This study presents a comprehensive investigation into the synthesis, characterization, and application of an exceptionally sensitive electrochemical sensor designed for ultrasensitive detection 2,4-dinitrotoluene (DNT), notorious explosive compound. The employs bimetallic nickel-cobalt oxide (NiCo2O4) nanoparticles, synthesized through facile hydrothermal method. Extensive analytical techniques, including scanning electron microscopy (SEM), transmission (TEM), atomic force (AFM), x-ray photoelectron spectroscopy (XPS), were employed to validate crystallinity purity NiCo2O4 nanoparticles. These possessing remarkable properties, form core our sensor, enabling it offer heightened sensitivity selectivity even under ambient conditions. Most notably, this boasts impressively low limit (LOD) 18 nM, coupled with broad linear range (LDR) spanning from 10 nM 100 nM. exhibits robust sensitivity, excellent selectivity, outstandingly threshold, collectively demonstrating its potential precise accurate DNT. research underscores significant specifically NiCo2O4, in quantification nitro-aromatic analytes. opens up promising avenues assessing hazardous compounds complex environmental matrices, thereby contributing advancement sensing. Additionally, novel sensing platform holds substantial promise enhancing security measures monitoring improved explosives.