Varghese, EV and Thomas, B and Schwandt, C and Ramamurthy, PC and Joseph, A (2023) Benzimidazole-modified polyaniline micro-shells for electrochemical detection of cadmium in aqueous solution. In: Journal of Electrochemical Science and Engineering, 13 (2). pp. 275-286.
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Abstract
Benzimidazole-functionalized polyaniline (BMPANI) was synthesized by interfacial polymerization technique and used for electrochemical sensing of cadmium ions in an aqueous solution. The material was characterized for its structural and morphological features using Fourier-transform infrared spectroscopy (FTIR), X-ray diffractometry (XRD), and scanning electron microscopy (SEM). The BMPANI has a micro-shell structure produced from the self-assembly of the monomer units in solution before the polymerization reaction. The material was trialed for cadmium ion sensing using a BMPANI-modified carbon paste electrode (BMPANI-CPE). Electrochemical techniques, i.e., cyclic voltammetry (CV) and differential pulse anodic stripping voltammetry (DPASV), were performed to assess the sensing characteristics of the material. Various electrode preparation parameters, i.e., deposition potential, pH of deposition solution, and thickness of the active layer, were optimized to achieve the highest level of sensitivity. The selectivity towards cadmium ions, interference from other ions, as well as stability and reusability of the BMPANI-CPE, were also examined and found to be satisfactory. © 2023, International Association of Physical Chemists. All rights reserved.
| Item Type: | Journal Article |
|---|---|
| Publication: | Journal of Electrochemical Science and Engineering |
| Publisher: | International Association of Physical Chemists |
| Additional Information: | The copyright for this article belongs to the Authors. |
| Keywords: | cyclic voltammetry; differential pulse anodic stripping voltammetry; electrochemical biosensor; Polyaniline; sensor reusability; sensor stability |
| Department/Centre: | Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) |
| Date Deposited: | 30 Mar 2023 05:57 |
| Last Modified: | 30 Mar 2023 05:57 |
| URI: | https://eprints.iisc.ac.in/id/eprint/81164 |
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