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首页> 外文期刊>RSC Advances >Facile preparation of a highly sensitive nonenzymatic glucose sensor based on multiwalled carbon nanotubes decorated with electrodeposited metals
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Facile preparation of a highly sensitive nonenzymatic glucose sensor based on multiwalled carbon nanotubes decorated with electrodeposited metals

机译：基于电沉积金属装饰多壁碳纳米管的高灵敏度非酶葡萄糖传感器的容纳制备

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摘要

Novel multi-walled carbon nanotubes decorated with nickel, copper, and silver (Ni/CuAg/MWCNT) have been successfully fabricated for a nonenzymatic glucose sensor by the electrocodeposition of copper and silver and sequential electrodeposition of nickel using a MWCNT-modified electrode. The Ni, Cu, and Ag species deposited on MWCNT were indicated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Tests with various scan rates and pH conditions indicate that a diffusion-controlled in the electrochemical system and the hybrid composite is stable. In alkaline condition, the electrode shows good activity towards glucose oxidation with low overpotential with obvious oxidation peaks at + 0.38 V and + 0.5 V and a current response that is 1.7-5.8 times greater than those obtained using Ni/ CuAg and MWCNT modified electrodes. Amperometry (E-app. = + 0.6 V) indicates a response time of 10 s; one linear range of 5 x 10(-6) -4.05 x 10(-4) M, with high sensitivity of 5007 mu A mM(-1) cm(-2) and a low detection limit of 5 x 10(-6) M (S/N = 3). It can effectively analyse glucose concentration avoiding interference. The modified electrode can be a nonenzymatic glucose sensor due to its low overpotential, high sensitivity, good selectivity, good stability, and low cost.
机译：用铜和银的电镀层成功地制造着用镍，铜和银（Ni / CuaG / MWCNT）装饰的新型多壁碳纳米管，用于使用MWCNT改性电极的镍和镍的镍和镍的连续电沉积的非酶葡萄糖传感器。 X射线衍射（XRD）和扫描电子显微镜（SEM）表示沉积在MWCNT上的Ni，Cu和Ag物质。具有各种扫描速率和pH条件的测试表明电化学系统中的扩散控制和杂合复合材料是稳定的。在碱性条件下，电极显示出孔氧化的良好活性，其具有明显的氧化峰，在+ 0.38V和+ 0.5V的明显氧化峰，电流响应比使用Ni / CuAG和MWCNT改性电极获得的1.7-5.8倍。安培测量（e-app. = + 0.6 v）表示10 s的响应时间;一个线性范围为5×10（-6）-4.05×10（-4）m，具有5007μmmm（-1）cm（-2）的高灵敏度，低检测限为5×10（-6 ）m（s / n = 3）。它可以有效分析葡萄糖浓度避免干扰。由于其低过电位，高灵敏度，良好的选择性，良好的稳定性和低成本，改性电极可以是非酶葡萄糖传感器。

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  • 来源
    《RSC Advances》 |2015年第4期|共7页
  • 作者

    Lin Kuo Chiang; Hung Yu Tsung; Chen Shen Ming;

  • 作者单位

    Natl Taipei Univ Technol Dept Chem Engn &

    Biotechnol Elect &

    Bioelectrochem Lab Taipei 106 Taiwan;

    Natl Taipei Univ Technol Dept Chem Engn &

    Biotechnol Elect &

    Bioelectrochem Lab Taipei 106 Taiwan;

    Natl Taipei Univ Technol Dept Chem Engn &

    Biotechnol Elect &

    Bioelectrochem Lab Taipei 106 Taiwan;

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  • 正文语种 eng
  • 中图分类 化学;
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