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Reference type: Journal
Authors: Wang B, Okoth OK, Yan K, Zhang JD
Article Title: A highly selective electrochemical sensor for 4-chlorophenol determination based on molecularly imprinted polymer and PDDA-functionalized graphene.
Publication date: 2016
Journal: Sensors and Actuators B: Chemical
Volume: 236
Page numbers: 294-303.
DOI: 10.1016/j.snb.2016.06.017
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0925400516308693

Abstract: Molecularly imprinted polymer (MIP) of 4-chlorophenol (4-CP) was synthesized and combined with poly(diallyldimethylammonium chloride) (PDDA)-functionalized graphene (PDDA-G) to develop an electrochemical sensor for selective determination of 4-CP. The chemical structures of the imprinted films were analyzed using Fourier transform infrared (FTIR) spectroscopy. The morphology and interfacial behavior of MIP and PDDA-G modified glassy carbon electrodes (GCEs) were investigated by scanning electron microscopic (SEM) and electrochemical impedance spectroscopic (EIS) techniques, respectively. The obtained MIP/PDDA-G/GCE showed high sensing performance towards 4-CP. Under optimized conditions, the sensor showed a linear response to the concentration of 4-CP in a wide range from 0.8 to 100 μmol L-1 with a detection limit (3S/N) of 0.3 μmol L-1. Moreover, the imprinted sensor exhibited excellent specific recognition ability to 4-CP which could avoid the interference of other structurally similar phenolic compounds. The developed sensor was successfully applied to the detection of 4-CP in real-life water samples
Template and target information: 4-chlorophenol, 4-CP
Author keywords: molecularly imprinted polymer, Poly(diallyldimethylammonium chloride), Graphene, 4-Chlorophenol

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