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Comparative evaluation of enzyme-free nanoclay-ionic liquid based electrodes for detection of bioanalytes

机译：无酶纳米粘土离子液体基电极检测生物分析的比较评价

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Enzyme-free electrodes were fabricated using nanoclay LAPONITE? and montmorillonite (MMT) and imidazolium based ionic liquids (ILs), 1-ethyl-3-methyl imidazolium chloride ([C2mim][Cl]) and 1-methyl-3-octyl imidazolium chloride ([C8mim][Cl]). Here, we have presented a set of quantitative results which conclude that these enzyme-free electrodes can be used successfully for the development of strip-sensors for detection of bioanalytes. Introduction of ILs into nanoclay dispersions resulted in the enhancement of stability of the thin film electrodes formed of the NC-IL materials. The fabricated electrodes were used for sensing various bioanalytes, such as ascorbic acid (AA), oxalic acid (OA), urea (U), citric acid (CA), glucose (Glu) and cholesterol (Chox). The influence of different alkyl chain lengths of ionic liquids, and the aspect ratio of nanoclay platelets were studied with respect to their electrochemical response to different analytes, which covered seven distinct matrices coated on the electrode surface. Further, the effect of oxygen ion beam irradiation on the electrochemical profiles of these electrodes was explored. The irradiation leads to reduction of the electrochemical properties by blocking certain active charge transfer sites. The electrochemical characterization of these electrodes was done using cyclic voltammetry (CV), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM).
机译：使用NanoClay Laponite制造无酶电极？和蒙脱石（MMT）和基于咪唑鎓的离子液体（ILS），1-乙基-3-甲基咪唑鎓氯化物（[C2mim] [Cl]）和1-甲基-3-辛基咪唑氯（[C8mim] [Cl]）。在这里，我们介绍了一系列的定量结果，得出结论，这些无菌电极可以成功地用于开发用于检测生物分析的条传感器。将ILS引入纳米粘土分散体导致提高由NC-IL材料形成的薄膜电极的稳定性。制造的电极用于感测各种生物分析，例如抗坏血酸（AA），草酸（OA），尿素（U），柠檬酸（CA），葡萄糖（GLU）和胆固醇（CHOX）。研究了离子液体不同烷基链长度的影响，以及纳米阵血小板的纵横比对不同分析物的电化学响应研究，其覆盖了涂覆在电极表面上的七种不同的基质。此外，探讨了氧离子束照射对这些电极的电化学轮廓的影响。辐射通过阻断某些活性电荷转移位点来导致电化学性能的降低。使用循环伏安法（CV），傅里叶变换红外光谱（FTIR）和扫描电子显微镜（SEM）进行这些电极的电化学表征。

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