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首页> 外文期刊>Electroanalysis >A Novel Electrochemical Sensor for Detection of Baicalein in Human Serum Based on DUT-9/Mesoporous Carbon Composite
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A Novel Electrochemical Sensor for Detection of Baicalein in Human Serum Based on DUT-9/Mesoporous Carbon Composite

机译：一种新型电化学传感器，用于基于DUT-9 /中孔碳复合材料检测人血清中Baicalin的电化学传感器

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摘要

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 mu M (R-2=0.993, sensitivity of 0.1188 mu A/mu M) with a low detection limit of 0.015 mu M. 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.
机译：第一次通过MC上原位生长，通过原位生长合成DUT-9 /中孔碳（DUT-9 / MC）纳米复合材料。与原始DUT-9晶体相比，复合材料中MC的存在可以避免DUT-9薄片的聚集，增加比表面积并降低电子传递电阻。与DTU-9相比，DUT-9 / MC显示出对Baicalein的氧化还原的增强电催化活性。 Baicalein的可能的电催化氧化还原机制涉及两个电子和两种质子。在优化的条件下，所提出的传感器在0.05-20μm（R-2 = 0.993，灵敏度为0.1188μA/ mu m的浓度范围内，较低的检测限为0.015 mu m.值得注意的是，Baicaline（0.107V）的氧化过电位显着低于pH 7.0中大多数文献的氧化。同时，所提出的传感器显示出在人血清样品中检测Baicaline的令人满意的结果。该研究提供了一种高效的制造基于新型电化学传感器的二维层状结构MOF的策略。

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  • 来源
    《Electroanalysis》 |2020年第3期|共8页
  • 作者

    Wang Haixu; Yuan Shuang; Zhou Ming; Guo Liping;

  • 作者单位

    Northeast Normal Univ Fac Chem Key Lab Nanobiosensing &

    Nanobioanal Univ Jilin P Changchun 130024 Jilin Peoples R China;

    Northeast Normal Univ Fac Chem Key Lab Nanobiosensing &

    Nanobioanal Univ Jilin P Changchun 130024 Jilin Peoples R China;

    Northeast Normal Univ Fac Chem Key Lab Nanobiosensing &

    Nanobioanal Univ Jilin P Changchun 130024 Jilin Peoples R China;

    Northeast Normal Univ Fac Chem Key Lab Nanobiosensing &

    Nanobioanal Univ Jilin P Changchun 130024 Jilin Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 电化学、电解、磁化学;
  • 关键词

    Metal-organic framework; Mesoporous carbon; Baicalein; Electrocatalysis;

    机译：金属有机框架;中孔碳;Baicalein;电催化;

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