Ultra-sensitive, selective, and rapid carcinogenic 1,2-diaminobenzene chemical determination using sol–gel coating low-dimensional facile CuS modified-CNT nanocomposites by electrochemical approach

In this approach, sol–gel coating CuS decorated carbon nanotubes nanocomposite (CuS-CNT NC) were synthesized by a facile solution method in an alkaline medium. We have systematically characterized the resulting CuS-CNT nanocomposite by FESEM, EDS, XPS, FTIR, and XRD. Glassy carbon electrodes (GCEs) were modified by the CuS-CNT nanocomposite and developed an electrochemical sensor to determine 1,2-diaminobenzene (DAB) by simple electrochemical technique. Hazardous DAB was nominated as the target analyte by the selectivity study that showed a quick response at the CuS-CNT/GCE sensor. It has also shown exceptional sensitivity, extremely lower detection limit, and excellent stability. In the analytical exploration, a linear standardization plot (r2 = 0.9996) was attained for DAB concentrations ranging from 0.01 nM to 1.0 mM, estimated sensitivity of 3.2516 μAnM-1cm−2 and extremely low limit of detection, LOD as 4.3 ± 0.05 pM (S/N = 3). Potential uses of the CuS-CNT nanocomposite related to electrochemical sensing are also explained in this article. This method is evolving as an efficient procedure in developing an effective electrochemical sensor to determine environmental pollutants on a broad scale.