Application of gold nanoparticles/polyaniline-multi-walled carbon nanotubes modified screen-printed carbon electrode for electrochemical sensing of zinc, lead, and copper

文献类型： 外文期刊

第一作者： Shao, Yangyang

作者： Shao, Yangyang;Dong, Yanjie;Bin, Liu;Fan, Lixia;Wang, Lei;Zhao, Shancang;Shao, Yangyang;Dong, Yanjie;Bin, Liu;Fan, Lixia;Wang, Lei;Yuan, Xuexia;Zhao, Shancang;Li, Dapeng;Liu, Xue

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关键词： Gold nanoparticles; Polyaniline-multi-walled carbon nanotubes; Disposable sensor; Stripping voltammetry; Heavy metal detection

期刊名称：MICROCHEMICAL JOURNAL （ 影响因子：4.821； 五年影响因子：4.364 ）

ISSN： 0026-265X

年卷期： 2021 年 170 卷

页码：

收录情况： SCI

摘要： In this work, we report a simple, disposable, and highly sensitive electrochemical sensor based on a screen-printed carbon electrode (SPCE) modified with gold nanoparticles/polyaniline-multi-walled carbon nanotubes composite (AuNPs/PANI-MWCNTs) for simultaneous detection of zinc (Zn(II)), lead (Pb(II)), and copper (Cu(II)) by square wave anodic stripping voltammetry (SWASV). The proposed sensor exhibited three pronounced and independent peaks for Zn(II), Pb(II), and Cu(II) and showed wide linear ranges from 1 to 180 mu g L-1 for each. The detection limits (S/N = 3) of Zn(II), Pb(II), and Cu(II) were 0.039 mu g L-1, 0.037 mu g L-1, and 0.017 mu g L-1, respectively, which are lower than the minimum values set by the Environmental Protection Agency (EPA) for drinking water. Besides, the proposed sensor exhibited excellent repeatability, reproducibility, stability, and selectivity. Finally, the feasibility of our analysis method was verified by the determination of trace Zn(II), Pb(II), and Cu(II) in water samples, and the obtained results were consistent with the ICP-MS determination.

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