An electrochemical sensor based on molecularly imprinted polypyrrole/graphene quantum dots composite for detection of bisphenol A in water samples
An electrochemical sensor based on molecularly imprinted polypyrrole/graphene quantum dots composite for detection of bisphenol A in water samples
复制标题
基于分子印迹聚吡咯/石墨烯量子点复合材料的电化学传感器用于检测水样中的双酚A
DOI：
10.1016/j.snb.2016.04.146
复制
发表时间：
2016-10-05
影响因子：
8.4
通讯作者：
Chen, Jingwen
中科院分区：
文献类型：
--
作者：
Tan, Feng;Cong, Longchao;Chen, Jingwen
双酚A（BPA）是环境中重要的内分泌干扰物，对其进行识别和定量，需要灵敏、选择性强的检测方法。基于分子印迹聚吡咯/石墨烯量子点（MIPPy/GQDs）复合材料，研制了一种新型的电化学传感器，用于检测水样中的双酚A（BPA）。以双酚A为模板，通过电聚合吡咯在玻碳电极上制备了MIPPy/GQDs复合膜。结果表明，MIPPy/GQDs复合物对BPA具有良好的识别能力，并能有效降低K3 [Fe（CN）（6）]在MIPPy/GQDs修饰电极上的循环伏安（CV）和微分脉冲伏安（DPV）峰电流。BPA浓度在0.1 μ M ~ 50 μ M范围内与DPV的响应值（Δ I-DPV）呈线性关系，检出限为0.04 μ M（S/N = 3）。该传感器用于自来水和海水样品中BPA的检测，回收率分别为94.5%和93.7%。该方法为环境样品中BPA的快速、灵敏检测提供了有力的工具。(C)© 2016 Elsevier B. V.版权所有。
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 K-3 [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 mu M to 50 mu M and the response value (Delta I-DPV) in DPV, with a limit of detection of 0.04 mu M (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. (C) 2016 Elsevier B.V. All rights reserved.