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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >A Selective Iodide Ion Sensor Electrode Based on Functionalized ZnO Nanotubes
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A Selective Iodide Ion Sensor Electrode Based on Functionalized ZnO Nanotubes

机译：基于功能化ZnO纳米管的选择性碘离子传感器电极

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摘要

In this research work, ZnO nanotubes were fabricated on a gold coated glass substrate through chemical etching by the aqueous chemical growth method. For the first time a nanostructure-based iodide ion selective electrode was developed. The ZnO nanotubes were functionalized with miconazole ion exchanger and the electromotive force (EMF) was measured by the potentiometric method. The iodide ion sensor exhibited a linear response over a wide range of concentrations (1 × 10−6 to 1 × 10−1 M) and excellent sensitivity of −62 ± 1 mV/decade. The detection limit of the proposed sensor was found to be 5 × 10−7 M. The effects of pH, temperature, additive, plasticizer and stabilizer on the potential response of iodide ion selective electrode were also studied. The proposed iodide ion sensor demonstrated a fast response time of less than 5 s and high selectivity against common organic and the inorganic anions. All the obtained results revealed that the iodide ion sensor based on functionalized ZnO nanotubes may be used for the detection of iodide ion in environmental water samples, pharmaceutical products and other real samples.
机译：在这项研究工作中，采用水化学生长法通过化学蚀刻在镀金玻璃基板上制备了ZnO纳米管。首次开发了基于纳米结构的碘离子选择电极。使用咪康唑离子交换剂对ZnO纳米管进行功能化，并通过电位法测量电动势（EMF）。碘离子传感器在很宽的浓度范围内（1×10 -6 至1×10 -1 M）表现出线性响应，灵敏度出色，为-62±1 mV /十年。该传感器的检出限为5×10 −7 M。还研究了pH，温度，添加剂，增塑剂和稳定剂对碘离子选择电极电位响应的影响。所提出的碘离子传感器表现出了不到5 s的快速响应时间以及对常见有机和无机阴离子的高选择性。所有获得的结果表明，基于功能化ZnO纳米管的碘离子传感器可用于检测环境水样品，药品和其他真实样品中的碘离子。

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