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ISSN: 1430-4171 (electronic version)

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Abstract Volume 25 (2020) pp 151-154

Modification of Gold Electrodes by “Molecularly Imprinted Polymer” for the Detection of CdCl₂ by Differential Pulse-Anodic Stripping Voltammetry (DP-ASV) and Electrochemical Impedance Spectroscopy (EIS)

Aysha Shaheen^†, Dionysios (Dion) D. Dionysiou^‡, Sadia Z. Bajwa^† and Suzanne Lunsford *^,§

^†Nanobiotech Group, National Institute for Biotechnology and Genetic Engineering (NIBGE), P.O. Box No.577, Jhang Road, Faisalabad, Pakistan; ^‡Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, United States; ^§Wright State University, Department of Chemistry, 3640 Colonel Glenn Highway, Dayton, OH 45435 suzanne.lunsford@wright.edu Received April 22, 2020. Accepted August 11, 2020.

Published: 18 August 2020

Abstract. In this article, we describe an inquiry-based learning experience with detection of CdCl₂ using molecularly imprinted polymer (MIP) modified gold electrode. Differential Pulse Voltammetry (DPV) and Differential Pulse-Anodic Stripping Voltammetry (DP-ASV) was utilized to estimate the potential of the modified electrodes towards CdCl₂. Modified electrodes were challenged with the increasing concentrations of CdCl₂ and they successfully showed the response towards these concentrations suggesting that this method can be successfully used to detect small molecules with greater sensitivity and selectivity.

Key Words: Laboratories and Demonstrations; analytic chemistry; differential pulse voltammetry (DPV); differential pulse anodic stripping voltammetry (DP-ASV); modified gold electrode; molecularly imprinted polymer (MIP)

(*) Corresponding author. (E-mail: tsuzanne.lunsford@wright.edu)

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