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首页> 外文期刊>Electrocatalysis >Manganese Peroxidase-Based Electro-Oxidation of Bisphenol A at Hydrogellic Polyaniline-Titania Nanocomposite-Modified Glassy Carbon Electrode
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Manganese Peroxidase-Based Electro-Oxidation of Bisphenol A at Hydrogellic Polyaniline-Titania Nanocomposite-Modified Glassy Carbon Electrode

机译：水凝胶聚苯胺 - 二氧化钛纳米复合材料改性玻碳电极双酚A的锰过氧化物酶的电氧化

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摘要

In addition to attack by communicable diseases and unforeseen outbreak of different pathogens, endocrine-disrupting chemicals (EDCs) destroy the human system. Bisphenol A (BPA) is an endocrine-disrupting chemical found in daily useable plastic-ware and is linked to health concerns such as obesity, insulin resistance, cancer, and alteration in the expression levels of immunological response cytokines. This study reports an electrochemical manganese peroxidase biosensor fabricated on a glassy carbon electrode modified with a nanocomposite comprising conducting polyaniline (PANI), polymethyl methacrylate (PMMA), and titanium dioxide (TiO2) nanoparticles. Incorporation of PMMA and TiO2 into PANI was confirmed by Raman spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy, and square wave voltammetry (SWV). The PANI composite served as an excellent receiving matrix for manganese peroxidase (MnP), an oxidoreductase well discovered for degradation of phenolic compounds. The biosensor showed excellent electrochemical degradation and oxidation of BPA, exhibiting a linear relationship between its current response and BPA concentrations within the range between 0.2 and 1.2nM. The calculated detection limit of 0.17nM signifies the excellent sensitivity and potential of the reported biosensor towards detection of BPA at trace amounts in environmental samples.
机译：除了通过传染病和不可预见的不同病原体爆发的攻击，内分泌破坏化学物质（EDC）摧毁了人体系统。双酚A（BPA）是一种在日常使用塑料用品中发现的内分泌破坏化学物质，与健康问题相连，如肥胖，胰岛素抵抗，癌症和免疫应答细胞因子的表达水平的改变。该研究报告了在用纳米复合材料改性的玻璃状碳电极上制造的电化学锰过氧化物酶发式传感器，所述纳米复合材料包括导电聚苯胺（PANI），聚甲基丙烯酸甲酯（PMMA）和二氧化钛（TiO 2）纳米颗粒。通过拉曼光谱，紫外 - 可见（UV-VIS）光谱和方波伏安（SWV）将PMMA和TiO2掺入PANI。 PANI复合物作为锰过氧化物酶（MNP）的优异接受基质，发现酚类化合物降解的氧化还原酶良好。生物传感器显示出优异的电化学降解和BPA的氧化，其当前响应与BPA浓度之间的线性关系在0.2和1.2nm之间。计算的检测限为0.17nm表示报告的生物传感器对环境样品中痕量的痕量BPA检测BPA的优异敏感性和潜力。

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