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Novel hydrothermal synthesis of MoS2 nanocluster structure for sensitive electrochemical detection of human and environmental hazardous pollutant 4-aminophenol

机译:新型水热合成MOS2纳米光栅结构,用于人和环境危险污染物4-氨基苯酚的敏感电化学检测

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摘要

Herein, we have demonstrated a new electrochemical sensor for trace level detection of environmentally hazardous 4-aminophenol (4-AP) using a glassy carbon electrode (GCE) modified with MoS2 nanoclusters. The MoS2 nanoclusters were fabricated by a simple hydrothermal treatment without using any other organic templates or surfactants. The formation of MoS2 nanoclusters was confirmed by X-ray diffraction, FT-infrared, Raman and energy dispersive X-ray spectroscopies, scanning electron and transmission electron microscopies and selected area electron diffraction studies. The MoS2 modified GCE (MoS2/GCE) shows good electrocatalytic activity towards the redox reaction of 4-AP by means of cyclic voltammetry and differential pulse voltammetry. The DPV detection of 4-AP using MoS2/GCE delivers excellent sensitivity with a low detection limit of 0.03 (+/-0.008) mu M and good linearity in the range of 0.04-17 mM. The sensitivity of the developed electrode is 4.278 (+/-0.058) mu A mM(-1) cm(-2). The developed sensor displayed good repeatability, reproducibility and selectivity. Moreover, the practical applicability of the MoS2/GCE is demonstrated in water samples which delivered satisfactory recoveries.
机译:在此,我们已经证明了一种用于使用用MOS2纳米单元改性的玻璃碳电极(GCE)的痕量水平检测的新电化学传感器,用于痕量水平检测环境危险的4-氨基苯酚(4-AP)。通过简单的水热处理制造MOS2纳米单元,而不使用任何其他有机模板或表面活性剂。通过X射线衍射,FT - 红外,拉曼和能量分散X射线光谱,扫描电子和透射电子显微镜和选择的区域电子衍射研究,确认MOS2纳米能器的形成。 MOS2改性的GCE(MOS2 / GCE)通过环状伏安法和差分脉冲伏安法显示出4-AP的氧化还原反应的良好电催化活性。使用MOS2 / GCE的4-AP的DPV检测具有优异的灵敏度,低检测限为0.03(+/- 0.008)μm,良好的线性度在0.04-17 mm的范围内。开发电极的敏感性为4.278(+/- 0.058)mm a mm(-1)cm(-2)。开发的传感器显示出良好的重复性,再现性和选择性。此外,MOS2 / GCE的实际适用性在水样中证明了令人满意的回收率。

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  • 来源
    《RSC Advances》 |2016年第46期|共9页
  • 作者单位

    VHNSN Coll Dept Chem Virudunagar 626001 Tamil Nadu India;

    Natl Taipei Univ Technol Dept Chem Engn &

    Biotechnol Taipei 106 Taiwan;

    Natl Taipei Univ Technol Dept Chem Engn &

    Biotechnol Taipei 106 Taiwan;

    VHNSN Coll Dept Chem Virudunagar 626001 Tamil Nadu India;

    Natl Taipei Univ Technol Dept Chem Engn &

    Biotechnol Taipei 106 Taiwan;

    VHNSN Coll Dept Chem Virudunagar 626001 Tamil Nadu India;

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