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首页> 外文期刊>International Journal of Electrochemical Science >Electrocatalytic and Simultaneous Determination of Phenylhydrazine and Hydrazine Using Carbon Paste Electrode Modified With Carbon Nanotubes and Ferrocenedicarboxylic Acid
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Electrocatalytic and Simultaneous Determination of Phenylhydrazine and Hydrazine Using Carbon Paste Electrode Modified With Carbon Nanotubes and Ferrocenedicarboxylic Acid

机译：碳纳米管和二茂铁二羧酸修饰的碳糊电极电催化同时测定苯肼和肼

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摘要

A carbon paste electrode (CPE) modified with ferrocenedicarboxylic acid (FCD) and carbon nanotubes(CNTs), was prepared for simultaneous determination of phenylhydrazine (PHZ) in the presence ofhydrazine (HZ). The electrochemical response characteristics of the modified electrode toward PHZand HZ were investigated by differential pulse voltammetry (DPV). The results showed an efficientcatalytic role for the electro-oxidation of PHZ and HZ, leading to a remarkable peak resolution (00mV) for two compounds. The mechanism of the modified electrode was analyzed by monitoring theCVs at various potential sweep rates and pHs of the buffer solutions. Under the optimum conditions,the calibration curve for PHZ was obtained in the range of 7.010 to 9.010 M. The preparedmodified electrode shows several advantages such as simple preparation method, high sensitivity,long-time stability, ease of preparation and regeneration of the electrode surface by simple polishingand excellent reproducibility. The proposed method was applied to determination of PHZ and HZ inurine and water samples and the obtained results were satisfactory.
机译：制备了用二茂铁二羧酸（FCD）和碳纳米管（CNT）改性的碳糊电极（CPE），用于在肼（HZ）存在下同时测定苯肼（PHZ）。通过差分脉冲伏安法（DPV）研究了修饰电极对PHZ和HZ的电化学响应特性。结果表明，PHZ和HZ的电氧化具有有效的催化作用，导致两种化合物的峰分离度（00mV）显着。通过监测各种电位扫描速率和缓冲溶液pH值下的CV来分析修饰电极的机理。在最佳条件下，PHZ的校正曲线在7.010至9.010 M之间。制备的修饰电极具有制备方法简单，灵敏度高，长期稳定性好，易于制备和电极表面再生等优点。简单的抛光和出色的重现性。将该方法用于PHZ和HZ尿液和水样的测定，结果令人满意。

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