基于离子液体 [BMIM][PF] 功能化锆铜双金属 MOF 复合材料的非酶电化学传感器用于食品样品中亚硝酸盐的检测。
Non-enzymatic electrochemical sensor based on ionic liquid [BMIM][PF] functionalized zirconium‑copper bimetallic MOF composite for the detection of nitrite in food samples.
机构信息
College of Materials Science and Engineering, Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar University, Qiqihar 161006, China.
College of Materials Science and Engineering, Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar University, Qiqihar 161006, China.
出版信息
Food Chem. 2024 Oct 30;456:140023. doi: 10.1016/j.foodchem.2024.140023. Epub 2024 Jun 10.
In this study, we developed an electrochemical sensor utilizing a composite material consisting of zirconium‑copper bimetallic metal-organic framework functionalized with ionic liquid [BMIM][PF]. This composite material was fabricated by simple wet impregnation method, which not only maintains excellent electrocatalytic activity but also enhances electron transfer rate and electroactive surface area. The ZrCu-MOF-818/ILs composite modified electrode has been demonstrated as an effective tool for the detection of nitrite. The electrode exhibited a remarkable limit of detection (LOD) of 0.148 μM and wide linear ranges of 6-3000 μM and 3000-5030 μM. It is worth noting that the sensor displayed excellent reproducibility and repeatability, with relative standard deviation (RSD) values of 1.06% and 1.37%, respectively. Furthermore, the proposed method was successfully applied for the detection of nitrite in tap water and pickle juice.
在本研究中，我们开发了一种电化学传感器，利用由离子液体[BMIM][PF]功能化的锆-铜双金属金属有机骨架复合材料。该复合材料通过简单的湿浸渍法制备，不仅保持了优异的电催化活性，而且提高了电子转移速率和有效电表面积。ZrCu-MOF-818/ILs 复合材料修饰电极已被证明是一种用于检测亚硝酸盐的有效工具。该电极表现出显著的检测限（LOD）为 0.148 μM，线性范围为 6-3000 μM 和 3000-5030 μM。值得注意的是，该传感器显示出优异的重现性和重复性，相对标准偏差（RSD）值分别为 1.06%和 1.37%。此外，该方法成功应用于自来水中和泡菜汁中亚硝酸盐的检测。
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