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首页> 外文期刊>Journal of Applied Polymer Science >Preparation of block copolymers via metal-free visible-light-induced ATRP for the detection of lead ions
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Preparation of block copolymers via metal-free visible-light-induced ATRP for the detection of lead ions

机译：通过无金属可见光诱导的ATRP制备嵌段共聚物，用于检测铅离子

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摘要

Polyacrylamide-b-poly(methacrylic acid) was prepared on the surface of Au electrode (Au/PAM/PMAA) for Pb2+ ion electrochemical sensing via metal-free visible-light-induced atom transfer radical polymerization, which was very simple, convenient, and environmentally friendly. Au/PAM/PMAA was carefully examined by cyclic voltammetry, electrochemical impedance spectroscopy, and X-ray photoelectron spectroscopy. Further, Au/PAM/PMAA was successfully used for the determination of Pb2+ ion by differential pulse anodic stripping voltammetry. Under the optimal conditions, a linear response from 1.0 x 10(-11) to 1.0 x 10(-4) mol/L with detection limit of 2.5 x 10(-12) mol/L (S/N=3) was achieved from the results of experiments. Comparing with similar Pb2+ sensors, the broader linear range and lower detection limit suggested the promising prospect of Au/PAM/PMAA. In a word, the work of this article had an important significance for the polymer-modified electrodes and the sensitive detection of Pb2+. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45863.
机译：通过无金属可见光诱导的原子转移自由基聚合，在Au电极（Au / pam / pmaa）表面上制备聚丙烯酰胺-b-聚（甲基丙烯酸）在Au电极（Au / pam / pmaa）的表面上，是非常简单，方便，和环保。通过循环伏安法，电化学阻抗光谱和X射线光电子能谱仔细检查AU / PAM / PMAA。此外，Au / pam / pmaa通过差分脉冲阳极剥离伏安法成功地用于测定Pb2 +离子。在最佳条件下，从1.0×10（-11）到1.0×10（-4）mol / L的线性响应，检测限为2.5×10（-12）mol / l（s / n = 3）从实验结果中。比较与类似的PB2 +传感器相比，更广泛的线性范围和较低的检测极限表明AU / PAM / PMAA的有希望的前景。总之，本文的工作对聚合物改性电极和PB2 +的敏感检测具有重要意义。 （c）2017 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2018,135,45863。

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