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Development of new modified electrode based on β-cyclodextrin for methylene blue detection
Sensor Review ( IF 1.6 ) Pub Date : 2020-06-19 , DOI: 10.1108/sr-12-2019-0304
Ilhem Ghodbane , Saida Zougar , Rim Lamari , Rochdi Kherrrat

This paper aims to focus on the development and characterization of a new electrochemical sensor, designed for the detection of methylene blue present in aqueous medium.,This sensor is obtained through the coupling of a polymeric membrane and an ion-sensitive electrode (platinum electrode). The preparation of the polymeric membrane involves the incorporation of a receptor: β-cyclodextrin (β-CD), a polymer (polyvinylchloride) and a plasticizer (dioctylphtalate). Cyclic voltammetry method (CV) was used to investigate the electrical properties of this electrochemical sensor. The effect of the experimental parameters such as dye initial concentration, scan rate, interfering elements presence and additional Nafion membrane presence was investigated in this paper.,The results are interesting because the developed sensor gives a linear response in concentrations range of 10−13 M–10−3 M with a good correlation coefficient of 0.979 and a detection limit of 10−13 M, which reflects the sensitivity of this sensor to the target element. The sensibility value is equal to 2. 40 µA mol−1 L.,The present study has shown that the modified electrode is a very good candidate in terms of price, sensibility and reproducibility for the construction of the sensitive sensor for the control of wastewater containing methylene blue.

中文翻译:

基于β-环糊精的亚甲基蓝检测修饰电极的研制

本文旨在关注一种新型电化学传感器的开发和表征,该传感器专为检测水性介质中存在的亚甲蓝而设计。该传感器是通过聚合物膜和离子敏感电极(铂电极)的耦合获得的。 . 聚合物膜的制备涉及受体的结合:β-环糊精(β-CD)、聚合物(聚氯乙烯)和增塑剂(邻苯二甲酸二辛酯)。循环伏安法 (CV) 用于研究该电化学传感器的电性能。本文研究了染料初始浓度、扫描速率、干扰元素的存在和额外的 Nafion 膜存在等实验参数的影响。结果很有趣,因为开发的传感器在 10-13 M-10-3 M 的浓度范围内给出了线性响应,相关系数为 0.979,检测限为 10-13 M,这反映了该传感器对目标元素。灵敏度值等于 2. 40 µA mol−1 L.,本研究表明,修饰电极在价格、灵敏度和重现性方面是构建用于控制废水的灵敏传感器的非常好的候选者含亚甲蓝。
更新日期:2020-06-19
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