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首页> 外文期刊>Journal of Materials Science >Electropolymerization of N-methylaniline in the presence of sodium dodecylsulfate and its application for electrocatalytic reduction of nitrite
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Electropolymerization of N-methylaniline in the presence of sodium dodecylsulfate and its application for electrocatalytic reduction of nitrite

机译：N-甲基苯胺在十二烷基硫酸钠存在下的电聚合及其在亚硝酸盐的电催化还原中的应用

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摘要

Poly(N-methylaniline) (PNMA) films were electrosynthesized on carbon paste electrode by oxidation of N-methylaniline (NMA) in acidic aqueous solution and in the presence of anionic surfactant. The films were characterized by cyclic voltammetry and scanning electron microscopy (SEM) and were contrasted with PNMA prepared under identical conditions in the absence of surfactant. The cyclic voltammograms of the film indicate a good redox behavior. Also, SEM studies show that the presence of the anionic surfactant strongly influences the morphology of the polymer product. This polymeric modified electrode has a very good activity toward the nitrite electroreduction via a EC' mechanism. The electrocatalytic reduction peak current is linearly dependent on the concentration of nitrite. The good linearity between the electroreduction peak current and the concentration of nitrite makes it possible to determine nitrite concentration accurately in the range of 1 x 10(-4) to 1.8 x 10(-2) M.
机译：在酸性水溶液中，在阴离子表面活性剂的存在下，通过氧化N-甲基苯胺（NMA），在碳糊电极上电合成聚（N-甲基苯胺）（PNMA）薄膜。通过循环伏安法和扫描电子显微镜（SEM）对薄膜进行表征，并与在没有表面活性剂的相同条件下制备的PNMA进行对比。膜的循环伏安图表明良好的氧化还原行为。另外，SEM研究表明，阴离子表面活性剂的存在强烈影响聚合物产物的形态。该聚合物改性电极通过EC'机理对亚硝酸盐的电还原具有非常好的活性。电催化还原峰电流与亚硝酸盐的浓度线性相关。电还原峰值电流与亚硝酸盐浓度之间的良好线性关系使得可以精确确定亚硝酸盐浓度在1 x 10（-4）至1.8 x 10（-2）M的范围内。

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