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Electrodeposited [email protected] imprinted polymer core-shell nanostructure: Enhanced sensing platform for sensitive and selective detection of bisphenol A
Sensors and Actuators B: Chemical ( IF 8.0 ) Pub Date : 2018-07-09 , DOI: 10.1016/j.snb.2018.07.039
Weihua Zheng , Zhili Xiong , Haifeng Li , Shangmin Yu , Gengen Li , Liting Niu , Weilu Liu

A novel electrochemical sensor based on [email protected] imprinted polymer (MIP) core-shell nanostructure was developed using a facile electrodeposition method. This unique core-shell nanostructure offered the advantages of large electrode surface area, regular morphology, high selectivity and sensitivity. The poly(3, 6-diamino-9-ethylcarbazole) based MIP shell acted as the recognition element, while the inner Pt nanoparticles acted as a catalytic center. The morphology of the core-shell nanostructure was observed by scanning electron microscopy and the electrochemical property was evaluated using cyclic voltammetry. The sensing performance of the [email protected] sensor was investigated using the analyte of bisphenol A (BPA). Influence of the polymerization conditions on the performance of the [email protected] sensor was investigated. Under the optimized condition, a wide linear range (0.007 μM ∼ 70 μM), a low detection limit (0.0032 μM) and a good selectivity were obtained for the detection of BPA. Finally, the sensor was applied to the detection of BPA in serum and drinking bottle samples with satisfying results.



中文翻译:

电沉积(受电子邮件保护的)印迹聚合物核-壳纳米结构:增强的传感平台,用于敏感和选择性地检测双酚A

使用一种简便的电沉积方法,开发了一种基于[电子邮件保护]印迹聚合物(MIP)核-壳纳米结构的新型电化学传感器。这种独特的核壳纳米结构具有电极表面积大,形态规则,选择性和灵敏度高的优点。基于聚(3,6-二氨基-9-乙基咔唑)的MIP壳充当识别元素,而内部的Pt纳米颗粒充当催化中心。通过扫描电子显微镜观察核-壳纳米结构的形态,并使用循环伏安法评价电化学性质。使用双酚A(BPA)的分析物研究了[受电子邮件保护的]传感器的传感性能。研究了聚合条件对[受电子邮件保护的]传感器性能的影响。在优化的条件下,对于BPA的检测,获得了宽的线性范围(0.007μM〜70μM),低的检测限(0.0032μM)和良好的选择性。最终,该传感器用于血清和饮水瓶样品中双酚A的检测,结果令人满意。

更新日期:2018-07-09
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