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首页> 外文期刊>RSC Advances >Electrochemical performance of myoglobin based on TiO2-doped carbon nanofiber decorated electrode and its applications in biosensing
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Electrochemical performance of myoglobin based on TiO2-doped carbon nanofiber decorated electrode and its applications in biosensing

机译：基于TiO2掺杂的碳纳米纤维装饰电极的肌球蛋白的电化学性能及其在生物传感中的应用

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摘要

A new biosensing strategy based on a TiO2-doped carbon nanofiber (CNF) composite modified electrode was developed. TiO2@CNF was prepared by electrospinning with further carbonization, before being characterized by various methods and used for electrode modification on the surface of carbon ionic liquid electrode (CILE). Myoglobin (Mb) was further immobilized on the modified electrode surface. The results of ultraviolet-visible (UV-vis) and Fourier transform infrared (FT-IR) spectroscopy showed that Mb maintained its native structure without denaturation in the composite film. Direct electron transfer and the electrocatalytic properties of Mb on the electrode surface were further investigated. A pair of quasi-reversible redox peaks appeared on the cyclic voltammogram, indicating that direct electrochemistry of Mb was realized in the nanocomposite film. This could be attributed to the specific properties of TiO2@CNF nanocomposite, including a large surface-to-volume ratio, good biocompatibility and high conductivity. Nafion/Mb/TiO2@CNF/CILE exhibited an excellent electrochemical catalytic ability in the reduction of trichloroacetic acid, NaNO2 and H2O2. All results demonstrated potential applications of TiO2@CNF in third-generation electrochemical biosensors.
机译：开发了一种基于TiO2掺杂碳纳米纤维（CNF）复合电极的新型生物腐蚀策略。在通过各种方法表征之前，通过静电纺丝制备TiO2 @ CNF，并用于在碳离子液体电极（Cile）表面上的电极改性。将肌球蛋白（MB）进一步固定在改性电极表面上。紫外 - 可见（UV-VI）和傅里叶变换红外（FT-IR）光谱结果表明，MB在复合膜中保持其天然结构而不会变性。进一步研究了电极表面上MB的直接电子转移和电催化性质。在循环伏安图上出现了一对准反转氧化还原峰，表明在纳米复合膜中实现了MB的直接电化学。这可能归因于TiO2纳米复合材料的特定性质，包括大的表面对体积比，良好的生物相容性和高导电性。 Nafion / MB / TiO2 @ CNF / CIle在减少三氯乙酸，纳米2和H 2 O 2的减少方面表现出优异的电化学催化能力。所有结果显示在第三代电化学生物传感器中的TiO2 @ CNF潜在应用。

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  • 来源
    《RSC Advances》 |2019年第8期|共8页
  • 作者

    Niu Yanyan; Xie Hui; Luo Guiling; Weng Wenju; Ruan Chengxiang; Li Guangjiu; Sun Wei;

  • 作者单位

    Hainan Normal Univ Coll Chem &

    Chem Engn Key Lab Trop Med Plant Chem Minist Educ Haikou 571158 Hainan Peoples R China;

    Hainan Normal Univ Coll Chem &

    Chem Engn Key Lab Trop Med Plant Chem Minist Educ Haikou 571158 Hainan Peoples R China;

    Hainan Normal Univ Coll Chem &

    Chem Engn Key Lab Trop Med Plant Chem Minist Educ Haikou 571158 Hainan Peoples R China;

    Qingdao Univ Sci &

    Technol Coll Chem &

    Mol Engn Key Lab Opt Elect Sensing &

    Analyt Chem Life Sci Minist Educ Qingdao 266042 Peoples R China;

    Jiangxi Sci &

    Technol Normal Univ Jiangxi Key Lab Surface Engn Nanchang 330013 Jiangxi Peoples R China;

    Qingdao Univ Sci &

    Technol Coll Chem &

    Mol Engn Key Lab Opt Elect Sensing &

    Analyt Chem Life Sci Minist Educ Qingdao 266042 Peoples R China;

    Hainan Normal Univ Coll Chem &

    Chem Engn Key Lab Trop Med Plant Chem Minist Educ Haikou 571158 Hainan Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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