Preparation of polyacrylamide via surface-initiated electrochemical-mediated atom transfer radical polymerization (SI-eATRP) for Pb2+ sensing
Preparation of polyacrylamide via surface-initiated electrochemical-mediated atom transfer radical polymerization (SI-eATRP) for Pb2+ sensing
复制标题
DOI：
10.1007/s10008-015-3008-3
复制
发表时间：
2015
影响因子：
2.5
通讯作者：
Yue Sun;Hongying Du;Yi Deng;Yuting Lan;Chunliang Feng
中科院分区：
文献类型：
--
作者：
Yue Sun;Hongying Du;Yi Deng;Yuting Lan;Chunliang Feng
通过表面引发电化学介导原子转移自由基聚合（SI-eATRP）在Au电极表面制备了丙烯酰胺聚合物刷（PAM），用于Pb 2+离子传感。采用循环伏安法（CV）、电化学阻抗谱（EIS）、偏振调制红外反射吸收光谱（PM-IRRAS）和扫描电镜（SEM）对PAM（PAM/Au）修饰电极进行了研究。将PAM/Au电极用于微分脉冲阳极溶出伏安法（DPASV）测定Pb 2+离子。在最佳条件下，PAM/Au电极对Pb 2+浓度在3.0 × 10− 3 ~ 2.0 × 103μg/L范围内呈线性关系。检测限（S/N = 3.3）估计为3.7 × 10−4μg/L。最后，聚合物刷电极被应用于分析废水中的Pb 2+离子。实验结果表明，PAM/Au电极具有良好的准确度，在实际样品分析中具有潜在的应用价值。总之，本文的工作为聚合物刷的合成和应用开辟了一条有益的途径。
Acrylamide polymer brushes (PAM) were prepared on the surface of Au electrode for Pb2+ion sensing via surface-initiated electrochemical-mediated atom transfer radical polymerization (SI-eATRP). The electrode modified with PAM (PAM/Au) was carefully examined by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), polarization modulation infrared reflection–absorption spectroscopy (PM-IRRAS), and scanning electron microscope (SEM). Further, the PAM/Au electrode was successfully used for the determination of Pb2+ion by differential pulse anodic stripping voltammetry (DPASV). Under the optimal conditions, the PAM/Au electrode showed a linear correlation for Pb2+concentrations in the range of 3.0 × 10−3to 2.0 × 103μg/L. The limit of detection (S/N = 3.3) was estimated to be 3.7 × 10−4μg/L. Finally, polymer brush electrodes were applied to analyze Pb2+ion in an effluent. The results of the experiment indicated that PAM/Au electrode has good accuracy and potential application in practical sample analysis. In a word, the work of this paper established a useful way for the synthesis and application of polymer brush.