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首页> 外文期刊>International Journal of Electrochemical Science >A Novel All-Solid-State Ion-Selective Electrode with Selenite- doped Polyaniline
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A Novel All-Solid-State Ion-Selective Electrode with Selenite- doped Polyaniline

机译：硒掺杂聚苯胺的新型全固态离子选择电极

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A novel all-solid-state selenite electrode with Ag and nano-Ag as a substrate and selenite-dopedpolyaniline as a sensitive membrane was fabricated by using electrochemical methods. Nano-Agparticles were electrodeposited on the surface of a cathode Ag wire in 0.1 M AgNO3 standard solutionwith a 1.2 V amplitude, 50 Hz frequency and 30 s action time. The polyaniline layer was coated bychronoamperometry and doped with selenite in selenite solution by the same technique. Scanningelectron microscopy (SEM) and energy-dispersive spectroscopy (EDS) analysis proved the successfuldoping of selenite. The selenite electrode, which had excellent stability and repeatability, had anexcellent Nernst linear response (slope -30.08 mV per decade, R2>0.99) with a linear range of 5×10-6~1×10-1 M and detection limit of 1.627×10-6 M. The response time was less than 2 s, and the lifespanwas more than 178 days. The electrode showed a high selectivity to selenite ions during theinterference study. The recovery rates in the sample test were from 95~99%, indicating that theelectrode can be applied in real sample measurements. Compared to previous work, this electrode issuperior in terms of multiple properties.
机译：采用电化学方法制备了一种以Ag和纳米Ag为基质，以亚硒酸酯掺杂的聚苯胺为敏感膜的新型全固态亚硒酸盐电极。将纳米Ag粒子以1.2 V振幅，50 Hz频率和30 s的作用时间电沉积在0.1 M AgNO3标准溶液中的阴极银线表面。通过计时安培法涂覆聚苯胺层，并通过相同技术在亚硒酸盐溶液中掺杂亚硒酸盐。扫描电子显微镜（SEM）和能量色散光谱（EDS）分析证明了硒矿的成功掺杂。亚硒酸盐电极具有出色的稳定性和可重复性，具有出色的能斯特线性响应（每十年斜率-30.08 mV，R2> 0.99），线性范围为5×10-6〜1×10-1 M，检测极限为1.627 ×10-6M。响应时间少于2 s，寿命超过178天。电极在干扰研究中显示出对亚硒酸盐离子的高选择性。样品测试的回收率在95％至99％之间，表明该电极可用于实际样品测量中。与以前的工作相比，该电极在多种性能方面都优越。

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