Herein, we introduce a simple set of experiments to construct non-enzymatic glucose sensors. The modification procedure was initiated by electrodeposition of nickel-coordination polymers (denoted henceforth as Ni-CPs) at the surface of glassy carbon (GC) electrode decorated with carbonnanotubes (CNTs). The electrochemical sensing of glucose occurred through the electrocatalytic oxidation of glucose by the Ni-CP using the CNTs as a high-area catalyst support. During potential cycling, the continuous chemical regeneration of the Ni(II) in the reaction between Ni(III) and glucose expresses itself as a dramatic enhancement of the anodic current pertaining to the Ni(III)/Ni(II) redox couple. Effects of various factors such as scan rate and solution pH were evaluated. For the optimized sensor the detection limit was as low as 2.1 μM glucose and with a linear response extending up to 400 μM. The modified electrode showed good reproducibility, excellent anti-interference performance, and high stability during the electrochemical experiments. Moreover, the analytical function of the non-enzymatic sensors for quantitative detection of glucose was assessed in real samples with satisfying results.

中文翻译：

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纳米镍配位聚合物修饰的玻碳电极对葡萄糖的非酶电分析

在这里，我们介绍了一组简单的实验来构建非酶促葡萄糖传感器。通过在装饰有碳纳米管（CNT）的玻璃碳（GC）电极表面上电沉积镍配位聚合物（此后称为Ni-CPs）来启动修饰程序。葡萄糖的电化学感应是通过使用CNT作为高面积催化剂载体的Ni-CP对葡萄糖进行电催化氧化而发生的。在潜在的循环过程中，Ni（III）和葡萄糖之间反应中Ni（II）的连续化学再生将自身表示为与Ni（III）/ Ni（II）氧化还原对有关的阳极电流的显着增强。评估各种因素的影响，例如扫描速率和溶液pH值。对于优化的传感器，检测极限低至2。1μM葡萄糖，线性响应扩展至400μM。修饰电极在电化学实验中显示出良好的可重复性，优异的抗干扰性能和高稳定性。此外，在实际样品中评估了非酶传感器对葡萄糖进行定量检测的分析功能，结果令人满意。