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Reference type: Journal
Authors: Tan F, Cong LC, Li XN, Zhao Q, Zhao HX, Quan X, Chen JW
Article Title: An electrochemical sensor based on molecularly imprinted polypyrrole/graphene quantum dots composite for detection of bisphenol A in water samples.
Publication date: 2016
Journal: Sensors and Actuators B: Chemical
Volume: 233
Page numbers: 599-606.
DOI: 10.1016/j.snb.2016.04.146
Alternative URL: https://www.researchgate.net/publication/301746258_An_electrochemical_sensor_based_on_molecularly_imprinted_polypyrrolegraphene_quantum_dots_composite_for_detection_of_bisphenol_A_in_water_samples

Abstract: Bisphenol A (BPA) is an important endocrine disrupter in environments, for which sensitive and selective detection methods are highly necessary to carry out its recognition and quantification. Here a novel electrochemical sensor was developed based on molecularly imprinted polypyrrole/graphene quantum dots (MIPPy/GQDs) composite for the detection of bisphenol A (BPA) in water samples. A MIPPy/GQDs composite layer was prepared by the electropolymerization of pyrrole on a glassy carbon electrode with BPA as a template. The MIPPy/GQDs composite could specifically recognize BPA in aqueous solutions, which resulted in the decrease of peak currents of K3[Fe(CN)6] at the MIPPy/GQDs) modified electrode in cyclic voltammetry (CV) and differential pulse voltammetry (DPV). There was a linear relationship between BPA concentrations ranging from 0.1 μM to 50 μM and the response value (Δ IDPV) in DPV, with a limit of detection of 0.04 μM (S/N = 3). The sensor was applied for the detection of BPA in tap and sea water samples, with recoveries of 94.5% and 93.7%, respectively. The proposed method provides a powerful tool for rapid and sensitive detection of BPA in environmental samples
Template and target information: bisphenol A, BPA
Author keywords: bisphenol A, electrochemical detection, molecularly imprinted polymer, Graphene quantum dots

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