A sensitive hollow shell‐based non‐enzymatic glucose sensor was developed using Mn‐Cu‐Al layered triple hydroxide on the surface of nickel foam (Mn‐Cu‐Al‐TH/NF). Mn‐Cu‐Al‐TH nanocomposites were prepared using a facile microwave‐assisted technique, and its hollow structure was created by continuous treatment with urea. The electrochemical activity of the Mn‐Cu‐Al‐TH/NF electrode was examined by cyclic voltammetric techniques. It was identified that the Mn‐Cu‐Al‐TH/NF electrode exhibited enhanced electrocatalytic activity towards glucose oxidation in alkaline medium (pH = 13), as compared with Mn‐Cu‐DH/NF and Mn‐H/NF electrodes. The electrocatalytic activity of the modified electrode under various pH values has been investigated. Under the optimized conditions, the electrochemical sensor exhibits a linear sensitivity towards glucose from 5 μM to 4 mM with a sensitivity of 2,108 μA mM⁻¹ cm⁻². Moreover, the glucose sensor demonstrated good selectivity, stability, fast response (<2 s), and repeatability. Our results suggest that Mn‐Cu‐Al‐TH hollow‐shelled layered triple hydroxide (LTH) nanocomposite could be a promising candidate for the construction of a nonenzymatic sensor.

中文翻译：

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3D毛状空心球形Mn-Cu-Al层状氢氧化物纳米复合材料的电化学活性：葡萄糖分析物的简短调查

使用在镍泡沫表面（Mn-Cu-Al-TH / NF）的Mn-Cu-Al层状三重氢氧化物开发了灵敏的基于空心壳的非酶葡萄糖传感器。Mn-Cu-Al-TH纳米复合材料是使用便捷的微波辅助技术制备的，其空心结构是通过尿素连续处理而形成的。Mn-Cu-Al-TH / NF电极的电化学活性通过循环伏安技术进行了检查。已确定，与Mn-Cu-DH / NF和Mn-H / NF电极相比，Mn-Cu-Al-TH / NF电极在碱性介质（pH = 13）中表现出增强的对葡萄糖氧化的电催化活性。已研究了在各种pH值下修饰电极的电催化活性。在优化条件下^-1厘米^-2。此外，葡萄糖传感器表现出良好的选择性，稳定性，快速响应（<2 s）和可重复性。我们的结果表明，Mn-Cu-Al-TH中空壳层状三重氢氧化物（LTH）纳米复合材料可能是构建非酶传感器的有前途的候选者。