Electrochemical sensor based on nanostructured ion imprinted polymer for the sensing and extraction of Cr(III) ions from industrial wastewater

Abstract

In the present study we prepared a novel ion imprinted polymer as a sensitive electrochemical sensor for the determination of Cr(III) ion. The Cr(III) ion imprinted polymer was fabricated on a platinum electrode. Due to the presence of a nanolayer on the ion imprinted polymer with specific binding sites, the sensor reacted quickly to Cr(III) ion and can be used for selective extraction of Cr(III) ion. The Cr(III) ion imprinted polymer was prepared by using methacrylic acid as the functional monomer, N,N'‐methylene‐bis‐acrylamide as the crosslinking agent, potassium peroxodisulfate as initiator and Cr(III) ion as the template molecule. Non‐imprinted polymers were also prepared for comparative studies. The synthesized polymer was characterized using Fourier transform IR spectroscopy, TEM, Energy‐dispersive X‐ray spectroscopy and XRD. The limit of detection of the platinum–mutiwalled carbon nanotube ion imprinted polymer sensor was found to be 0.051 µmol L–1 using differential pulse voltammetry. Moreover, the proposed method was effectively used for the sensing and extraction of Cr(III) ion in real samples collected from the metal plating industry. © 2018 Society of Chemical Industry

Recent Advances in Electrochemical Monitoring of Chromium

“…Nanostructured ion imprinted polymer (IIP) on the platinum electrode was reported as a sensor modifier for Cr(III) monitoring in industrial wastewater with a recovery of about 97% [ 140 ]. The Cr(III)-IIP was prepared by using vinyl group functionalized MWCNTs, methacrylic acid, N, N’Methylene-bis-acrylamide, Cr (III) ion and potassium peroxo disulphate as the functional monomer, the cross linking agent, template molecule and initiator respectively.…”

Research on Sewage Monitoring and Water Quality Prediction Based on Wireless Sensors and Support Vector Machines

“…Because the algorithm has extremely outstanding regression and classification performance, it has been widely used and researched in many research fields. In recent years, it has moved to the forefront of artificial intelligence scientific research and complex nonlinear science [28]. Support vector machines can be used to solve recognition and regression problems and treat them as a quadratic programming problem [28].…”

Automotive wastes

“…Trivalent chromium (Cr(III)) is used in automotive brake lining and catalytic converters. Aravind and Mathew (2018) created an ion-imprinted polymer that worked as an electrochemical sensor for the detection of Cr(III) in industrial wastewater.…”