Researchers in the field of electrochemistry have recently become interested in the extraordinary features of ternary transition metal oxide nanostructures with spinel structure derived from metal-organic framework (MOFs). In this study, the zeolitic imidazolate framework (ZIF-67), which grows in situ on the surface of another metal organic framework (Ce-BTC), was created using the internal expansion growth method (IEGM), and the resulting complex was then used as a template to create the dumbbell-like nanocomposite. Due to the strong electron conduction of CeO in composites, the electrode modified with composite material has good electrochemical activity in alkaline solution. As a glucose sensor, CoO/CeO nanocomposite modified glass carbon electrode (CoO/CeO/GCE) has better performance with a detection range of 83.75 μM–2796.84 μM, a reasonably good sensitivity of 790.746 μA mM·cm, an estimated detection limit of 5.5 μA (S/N = 3) and a short response time less than 3s. The modified electrode can continue to function normally even when exposed to various interfering compounds for extended periods of time in the air. The successful use of this enzyme-free glucose sensor in fruit juice demonstrates its remarkable performance and provides ideas for future applications.

中文翻译：

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源自金属有机框架 (MOF) 的哑铃形纳米复合材料 Co3O4/CeO2 作为优异的非酶葡萄糖传感器

电化学领域的研究人员最近对具有源自金属有机骨架（MOF）的尖晶石结构的三元过渡金属氧化物纳米结构的非凡特征产生了兴趣。在这项研究中，使用内部膨胀生长方法（IEGM）创建了在另一种金属有机骨架（Ce-BTC）表面原位生长的沸石咪唑酯骨架（ZIF-67），然后将所得络合物用作创建哑铃状纳米复合材料的模板。由于复合材料中CeO的电子传导性强，复合材料修饰的电极在碱性溶液中具有良好的电化学活性。作为葡萄糖传感器，CoO/CeO纳米复合修饰玻碳电极（CoO/CeO/GCE）具有更好的性能，检测范围为83.75 μM–2796.84 μM，灵敏度较好，为790.746 μA mM·cm，估计检测限为5.5 μA (S/N = 3) 和小于 3s 的短响应时间。即使长时间暴露在空气中的各种干扰化合物中，修饰电极也能继续正常工作。这种无酶葡萄糖传感器在果汁中的成功应用展示了其卓越的性能，并为未来的应用提供了思路。