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Flexible and disposable gold nanoparticles-N-doped carbon-modified electrochemical sensor for simultaneous detection of dopamine and uric acid

机译：柔性和一次性金纳米颗粒-N掺杂的碳改性电化学传感器，用于同时检测多巴胺和尿酸

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摘要

Catalytic and electrocatalytic applications of supported metal nanoparticles are hindered due to an aggregation of metal nanoparticles and catalytic leaching under harsh operations. Hence, stable and leaching free catalysts with high surface area are extremely desirable but also challenging. Here we report a gold nanoparticles-hosted mesoporous nitrogen doped carbon matrix, which is prepared using bovine serum albumin (BSA) through calcination. BSA plays three roles in this process as a reducing agent, capping agent and carbon precursor, hence the protocol exhibits economic and sustainable. Gold nanoparticles at N-doped BSA carbon (AuNPs@NBSAC)-modified three-electrode strip-based flexible sensor system has been developed, which displayed effective, sensitive and selective for simultaneous detection of uric acid (UA) and dopamine (DA). The AuNPs@NBSAC-modified sensor showed an excellent response toward DA with a linear response throughout the concentration range from 1 to 50 mu M and a detection limit of 0.05 mu M. It also exhibited an excellent response toward UA, with a wide detection range from 5 to 200 mu M as well as a detection limit of 0.1 mu M. The findings suggest that the AuNPs@NBSAC nanohybrid reveals promising applications and can be considered as potential electrode materials for development of electrochemical biosensors.
机译：由于金属纳米粒子的聚集和苛刻操作条件下的催化浸出，负载型金属纳米粒子的催化和电催化应用受到阻碍。因此，具有高比表面积的稳定无浸出催化剂是非常理想的，但也具有挑战性。在这里，我们报道了一种以金纳米粒子为载体的介孔氮掺杂碳基质，它是用牛血清白蛋白（BSA）通过煅烧制备的。BSA作为还原剂、封端剂和碳前体在这一过程中发挥着三种作用，因此该方案具有经济性和可持续性。N掺杂BSA碳表面的金纳米粒子(AuNPs@NBSAC)-研制了一种基于修饰三电极条的柔性传感器系统，该系统对尿酸（UA）和多巴胺（DA）的同时检测具有高效、灵敏和选择性。这个AuNPs@NBSAC-改进后的传感器对DA表现出良好的响应，在1至50μM的浓度范围内呈线性响应，检测限为0.05μM。它对UA也表现出良好的响应，检测范围为5至200μM，检测限为0.1μM。研究结果表明AuNPs@NBSAC纳米杂化材料具有广阔的应用前景，可以作为电化学生物传感器的潜在电极材料。

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  • 来源
    《Nanotechnology》 |2021年第6期|共9页
  • 作者

    Patil Aniruddha B.; Zheng Chuanbao; Ma Liyun; Wu Ronghui; Mengane Sharwari K.; Zhang Yifan; Liu Xiaotian; Meng Zhaohui; Zhang Wenli; Xu Zijie; Chen Caifeng; Huang Jiani; Liu Xiang Yang;

  • 作者单位

    Xiamen Univ Res Inst Soft Matter &

    Biomimet Fujian Prov Key Lab Soft Funct Mat Res Dept Phys Coll Mat Xiamen 361005 Peoples R China;

    Xiamen Univ Res Inst Soft Matter &

    Biomimet Fujian Prov Key Lab Soft Funct Mat Res Dept Phys Coll Mat Xiamen 361005 Peoples R China;

    Xiamen Univ Res Inst Soft Matter &

    Biomimet Fujian Prov Key Lab Soft Funct Mat Res Dept Phys Coll Mat Xiamen 361005 Peoples R China;

    Xiamen Univ Res Inst Soft Matter &

    Biomimet Fujian Prov Key Lab Soft Funct Mat Res Dept Phys Coll Mat Xiamen 361005 Peoples R China;

    MH Shinde Mahavidyalaya Dept Bot Kolhapur 416226 Maharashtra India;

    Xiamen Univ Res Inst Soft Matter &

    Biomimet Fujian Prov Key Lab Soft Funct Mat Res Dept Phys Coll Mat Xiamen 361005 Peoples R China;

    Xiamen Univ Res Inst Soft Matter &

    Biomimet Fujian Prov Key Lab Soft Funct Mat Res Dept Phys Coll Mat Xiamen 361005 Peoples R China;

    Xiamen Univ Res Inst Soft Matter &

    Biomimet Fujian Prov Key Lab Soft Funct Mat Res Dept Phys Coll Mat Xiamen 361005 Peoples R China;

    Xiamen Univ Res Inst Soft Matter &

    Biomimet Fujian Prov Key Lab Soft Funct Mat Res Dept Phys Coll Mat Xiamen 361005 Peoples R China;

    Xiamen Univ Res Inst Soft Matter &

    Biomimet Fujian Prov Key Lab Soft Funct Mat Res Dept Phys Coll Mat Xiamen 361005 Peoples R China;

    Xiamen Univ Res Inst Soft Matter &

    Biomimet Fujian Prov Key Lab Soft Funct Mat Res Dept Phys Coll Mat Xiamen 361005 Peoples R China;

    Xiamen Univ Res Inst Soft Matter &

    Biomimet Fujian Prov Key Lab Soft Funct Mat Res Dept Phys Coll Mat Xiamen 361005 Peoples R China;

    Xiamen Univ Res Inst Soft Matter &

    Biomimet Fujian Prov Key Lab Soft Funct Mat Res Dept Phys Coll Mat Xiamen 361005 Peoples R China;

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  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

    gold nanoparticle; electrochemical sensor; uric acid; dopamine; flexible strip sensor;

    机译：金纳米粒子;电化学传感器;尿酸;多巴胺;柔性条带传感器;

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