A novel electrochemical sensor based on 2,6-bis (2-benzimidazoyl) pyridine for the detection of Bisphenol A

• Published in: Materials chemistry and physics Vol. 275; p. 125287
• Main Authors: Kumar Naik, T.S. Sunil, Anil, Amith G., Swamy, B.E. Kumara, Singh, Simranjeet, Madhavi, V., Raghavendra, S.M., Ramamurthy, Praveen C.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01.01.2022; Elsevier BV
• Subjects: 2,6-Bis (2-benzimidazoyl) pyridine; And cyclic voltammetry; Bisphenol A; Chemical sensors; Electrochemical impedance spectroscopy; Electrochemical sensor; Evaluation; Modified carbon paste electrode; Molecular dynamics; Pyridines; Selectivity; Sensors; Stability analysis; Voltammetry; Water sampling; Bisphenol A; 2,6-Bis (2-benzimidazoyl) pyridine; Electrochemical sensor; And cyclic voltammetry; Modified carbon paste electrode
• ISSN: 0254-0584; 1879-3312
• DOI: 10.1016/j.matchemphys.2021.125287

Herein, the fabrication of a novel electrochemical sensor based on the 2,6-bis (2-benzimidazoyl) pyridine (BZPY) was carried out using a modified carbon paste electrode (MCPE). BZPY was characterized by FTIR, powder XRD, TGA, and SEM analysis. The developed BZPY/MCPE sensor was effectively employed for the detection of Bisphenol A (BPA) using electrochemical techniques like cyclic voltammetry (CV), differential pulse voltammetry, and electrochemical impedance spectroscopy (EIS). From the electrochemical investigation, BZPY exhibited excellent catalytic behavior for the detection of BPA. The electrode process of the BZPY/MCPE was observed to be diffusion-controlled and a lower detection limit (LOD) was estimated to be 0.029 μM in the linear range of 2–18 μM. Furthermore, stability, selectivity, and reproducibility of the BZPY/MCPE were evaluated. Moreover, the practical applicability of the sensor was examined using water samples with acceptable recovery (94.7–101.2%). In addition, the interaction of BZPY with BPA was evaluated using Molecular Dynamics simulations. These results suggest that BZPY/MCPE system could be used for the detection of BPA. [Display omitted] •2, 6-bis (2-benzimidazoyl) pyridine-based sensor was developed for Bisphenol A detection.•The developed sensor exhibited significant catalytic behavior towards the sensing of Bisphenol A in terms of sensitivity and selectivity.•Interaction of 2,6-bis (2-benzimidazoyl) pyridine with Bisphenol A was evaluated using Molecular Dynamics simulation.•LOD was found to be 0.029 μM with a linear response range of 2–18 μM.•Real-world sample analysis was carried out using tap water and bottled water samples.