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首页> 外文期刊>Materials science & engineering >The catalytic activity of Ag_2S-montmorillonites as peroxidase mimetic toward colorimetric detection of H_2O_2
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The catalytic activity of Ag_2S-montmorillonites as peroxidase mimetic toward colorimetric detection of H_2O_2

机译：Ag_2S-蒙脱土作为过氧化物酶模拟物对H_2O_2的比色检测的催化活性

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摘要

Nanocomposites based on silver sulfide (Ag_2S) and Ca-montmorillonite (Ca~(2+)-MMT) were synthesized by a simple hydrothermal method. The nanocomposites were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and Fourier transform infrared spectra (FTIR). The as-prepared Ag_2S-MMT nanocomposites were firstly demonstrated to possess intrinsic peroxidase-like activity and could rapidly catalytically oxidize the substrate 3,3′,5,5′-tetramethylbenzidine (TMB) in the presence of H_2O_2 to produce a blue product which can be seen by the naked eye in only one minute. The experimental results revealed that the Ag_2S-MMT nanocomposites exhibit higher thermal durance. Based on the TMB-H_2O_2 catalyzed color reaction, the Ag_2S-MMT nanocomposites were exploited as a new type of biosensor for detection and estimation of H_2O_2 through a simple, cheap and selective colorimetric method.
机译：采用简单的水热法合成了基于硫化银（Ag_2S）和蒙脱土（Ca〜（2 +）-MMT）的纳米复合材料。通过X射线衍射（XRD），透射电子显微镜（TEM）和傅立叶变换红外光谱（FTIR）对纳米复合材料进行了表征。首先证明了制备的Ag_2S-MMT纳米复合材料具有内在的过氧化物酶样活性，并且可以在H_2O_2存在的情况下快速催化氧化底物3,3'，5,5'-四甲基联苯胺（TMB），生成蓝色产物。只需一分钟即可用肉眼看到。实验结果表明，Ag_2S-MMT纳米复合材料具有较高的热持久性。基于TMB-H_2O_2催化的显色反应，将Ag_2S-MMT纳米复合材料作为一种新型的生物传感器，通过简单，廉价，选择性的比色法检测和评估H_2O_2。

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  • 来源
    《Materials science & engineering》 |2016年第8期|109-115|共7页
  • 作者

    Qingyun Liu; Yanling Jiang; Leyou Zhang; Xinpei Zhou; Xintian Lv; Yanyuan Ding; Lifang Sun; Pengpeng Chen; Hailiang Yin;

  • 作者单位

    School of Chemistry and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266510, PR China;

    School of Chemistry and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266510, PR China;

    School of Chemistry and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266510, PR China;

    School of Chemistry and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266510, PR China;

    School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, PR China;

    School of Chemistry and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266510, PR China;

    School of Chemistry and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266510, PR China;

    School of Chemistry and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266510, PR China;

    Academy of Science & Technology, China University of Petroleum, Dongying 257061, PR China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ag_2S; Ca-montmorillonite; Peroxidase; Colorimetric; H_2O_2;

    机译：Ag_2S;钙蒙脱石;过氧化物酶比色;H_2O_2;

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