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A Novel Electrochemical Sensor for Detection of Baicalein in Human Serum Based on DUT‐9/Mesoporous Carbon Composite
Electroanalysis ( IF 2.7 ) Pub Date : 2019-12-11 , DOI: 10.1002/elan.201900496 Haixu Wang 1 , Shuang Yuan 1 , Ming Zhou 1 , Liping Guo 1
Electroanalysis ( IF 2.7 ) Pub Date : 2019-12-11 , DOI: 10.1002/elan.201900496 Haixu Wang 1 , Shuang Yuan 1 , Ming Zhou 1 , Liping Guo 1
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DUT‐9/mesoporous carbon (DUT‐9/MC) nanocomposites were synthesized by in‐situ growth of nickel‐based metal‐organic frameworks (DUT‐9) on the MC for the first time. Compared with original DUT‐9 crystals, the presence of MC in the composites can avoid the agglomeration of DUT‐9 sheets, increase the specific surface area and reduce the electron transfer resistance. DUT‐9/MC shows enhanced electrocatalytic activity toward redox of baicalein compared with DTU‐9. The possible electrocatalytic redox mechanism of baicalein involves two electrons and two protons. Under the optimized conditions, the proposed sensor shows a wide linear relationship in the concentration range of 0.05‐20 μM (R2=0.993, sensitivity of 0.1188 μA/μM) with a low detection limit of 0.015 μM. It is worth noting that the oxidation overpotential of baicalein (0.107 V) is significantly lower than that of most literatures in pH 7.0. Meanwhile, the proposed sensor shows satisfactory results for the detection of baicalein in human serum samples. This research provides a highly efficient strategy for fabricating novel electrochemical sensor based two‐dimensional lamellar structure MOFs.
中文翻译：
基于DUT-9 /中孔碳复合物的新型检测人血清黄Human素的电化学传感器
DUT-9 /中碳（DUT-9 / MC）纳米复合材料是首次通过在MC上原位生长镍基金属有机骨架（DUT-9）来合成的。与原始DUT-9晶体相比，复合材料中MC的存在可以避免DUT-9板的团聚，增加比表面积并降低电子转移阻力。与DTU-9相比，DUT-9 / MC对黄ical素的氧化还原表现出增强的电催化活性。黄ical素可能的电催化氧化还原机理涉及两个电子和两个质子。在最佳条件下，建议的传感器在0.05-20μM（R 2= 0.993，灵敏度为0.1188μA/μM），低检测限为0.015μM。值得注意的是，黄ical素的氧化过电位（0.107 V）明显低于大多数文献中的pH 7.0。同时，该传感器对人血清样品中的黄ical素检测具有令人满意的结果。该研究为基于二维层状结构MOF的新型电化学传感器的制备提供了高效策略。
更新日期：2019-12-11
中文翻译：
基于DUT-9 /中孔碳复合物的新型检测人血清黄Human素的电化学传感器
DUT-9 /中碳（DUT-9 / MC）纳米复合材料是首次通过在MC上原位生长镍基金属有机骨架（DUT-9）来合成的。与原始DUT-9晶体相比，复合材料中MC的存在可以避免DUT-9板的团聚，增加比表面积并降低电子转移阻力。与DTU-9相比，DUT-9 / MC对黄ical素的氧化还原表现出增强的电催化活性。黄ical素可能的电催化氧化还原机理涉及两个电子和两个质子。在最佳条件下，建议的传感器在0.05-20μM（R 2= 0.993，灵敏度为0.1188μA/μM），低检测限为0.015μM。值得注意的是，黄ical素的氧化过电位（0.107 V）明显低于大多数文献中的pH 7.0。同时，该传感器对人血清样品中的黄ical素检测具有令人满意的结果。该研究为基于二维层状结构MOF的新型电化学传感器的制备提供了高效策略。
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