使用植酸/聚吡咯纳米线修饰的玻碳电极测定铜离子。
Determination of copper ions using a phytic acid/polypyrrole nanowires modified glassy carbon electrode.
机构信息
Key Laboratory for Colloid and Interface Chemistry of State Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
Key Laboratory for Colloid and Interface Chemistry of State Education Ministry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
出版信息
Mater Sci Eng C Mater Biol Appl. 2017 Jul 1;76:139-143. doi: 10.1016/j.msec.2017.03.077. Epub 2017 Mar 11.
This study reports a sensitive electro-analytical method for the determination of trace amounts of Cu using a phytate functionalized polypyrrole nanowires (PPy NWs) modified glass carbon electrode. The phytic acid/polypyrrole (PA/PPy) NWs were prepared by an electrostatic adsorption and ultrasonic mixing. The results showed that both PPy NWs and PA/PPy NWs modified glassy carbon electrodes have electrochemical responses toward Cu. However, owing to the synergistic contribution between the PPy NWs and PA, the PA/PPy NWs modified electrode exhibited higher sensitivity than that of PPy NWs modified electrode. The PA/PPy NWs composites functionalized electrodes showed a good linear relationship with Cu at concentration ranges of 10-60μg·L, and the limit of detection (S/N=3) was 3.33μg·L. In addition, the electrochemical sensor was applied to assay Cu in real water samples.
本研究报告了一种使用植酸功能化聚吡咯纳米线（PPyNWs）修饰的玻碳电极测定痕量 Cu 的灵敏电分析方法。植酸/聚吡咯（PA/PPy）NWs 通过静电吸附和超声混合制备。结果表明，PPyNWs 和 PA/PPyNWs 修饰的玻碳电极对 Cu 均有电化学响应。然而，由于 PPyNWs 和 PA 之间的协同贡献，PA/PPyNWs 修饰电极的灵敏度高于 PPyNWs 修饰电极。PA/PPyNWs 复合功能化电极在 10-60μg·L 的浓度范围内对 Cu 表现出良好的线性关系，检测限（S/N=3）为 3.33μg·L。此外，电化学传感器被应用于测定实际水样中的 Cu。
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