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Microwave-assisted synthesis of carbon dots-zinc oxide/multi-walled carbon nanotubes and their application in electrochemical sensors for the simultaneous determination of hydroquinone and catechol

机译：微波辅助合成碳点 - 氧化锌/多壁碳纳米管及其在电化学传感器中的同时测定氢醌和儿茶酚中的应用

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摘要

A facile, efficient, and rapid microwave-assisted synthesis was developed to prepare carbon dots-zinc oxide/multi-walled carbon nanotubes (CDs-ZnO/MWCNTs) composite. The CDs-ZnO/MWCNT material was characterized by scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction (XRD). The electrode modified with the CDs-ZnO/MWCNTs composite was applied for the simultaneous determination of hydroquinone (HQ) and catechol (CC) in 0.1 M phosphate buffer solution (PBS, pH = 4.5). The anodic potential difference (Delta E-pa) between HQ and CC was 104 mV, which indicated that the modified electrode could simultaneously detect HQ and CC. The calibration curves for both HQ and CC were obtained in the range from 5.0 to 200 mu M, and the detection limits (S/N = 3) were 0.02 mu M and 0.04 mu M, respectively. The modified electrode was applied to determine HQ and CC in tap water and the recovery rates were 99.3-105.4% for HQ and 104.3-110.1% for CC.
机译：开发了一种容易性，高效和快速的微波辅助合成以制备碳点 - 氧化锌/多壁碳纳米管（Cds-ZnO / MWCNT）复合材料。 Cds-ZnO / MWCNT材料的特征在于扫描电子显微镜（SEM），高分辨率透射电子显微镜（HRTEM），傅里叶变换红外光谱（FT-IR）和X射线衍射（XRD）。用Cds-ZnO / MWCNTS复合材料改性的电极用于同时测定0.1M磷酸盐缓冲溶液（PBS，pH = 4.5）中的氢醌（HQ）和儿茶酚（CC）。 HQ和CC之间的阳极电位差（Delta E-PA）为104 mV，表明修饰电极可以同时检测HQ和CC。总HQ和CC的校准曲线在5.0至200μm的范围内获得，并且检测限率分别为0.02μm和0.04μm。施用改性电极以测定自来水中的HQ和CC，HQ的回收率为99.3-105.4％，CC的104.3-110.1％。

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  • 来源
    《RSC Advances》 |2016年第116期|共9页
  • 作者

    Yan Yaru; Huang Qitong; Wei Chan; Hu Shirong; Zhang Hanqiang; Zhang Wuxiang; Yang Weize; Dong Peihui; Zhu Menglin; Wang Zhaoming;

  • 作者单位

    Minnan Normal Univ Coll Chem &

    Environm Zhangzhou 363000 Peoples R China;

    Zhanzhou Inst Technol Dept Food &

    Biol Engn Zhangzhou 363000 Peoples R China;

    Minnan Normal Univ Coll Chem &

    Environm Zhangzhou 363000 Peoples R China;

    Minnan Normal Univ Coll Chem &

    Environm Zhangzhou 363000 Peoples R China;

    Minnan Normal Univ Coll Chem &

    Environm Zhangzhou 363000 Peoples R China;

    Minnan Normal Univ Coll Chem &

    Environm Zhangzhou 363000 Peoples R China;

    Minnan Normal Univ Coll Chem &

    Environm Zhangzhou 363000 Peoples R China;

    Minnan Normal Univ Coll Chem &

    Environm Zhangzhou 363000 Peoples R China;

    Minnan Normal Univ Coll Chem &

    Environm Zhangzhou 363000 Peoples R China;

    Minnan Normal Univ Coll Chem &

    Environm Zhangzhou 363000 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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