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基于二茂铁衍生物、离子液体和CoS-碳纳米管纳米复合材料修饰碳糊电极的肼的电化学检测

Electrochemical Detection of Hydrazine by Carbon Paste Electrode Modified with Ferrocene Derivatives, Ionic Liquid, and CoS-Carbon Nanotube Nanocomposite.

作者信息

Tajik Somayeh, Beitollahi Hadi, Hosseinzadeh Rahman, Aghaei Afshar Abbas, Varma Rajender S, Jang Ho Won, Shokouhimehr Mohammadreza

机构信息

Research Center for Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman 7617934111, Iran.

Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman 7631818356, Iran.

出版信息

ACS Omega. 2021 Feb 8;6(7):4641-4648. doi: 10.1021/acsomega.0c05306. eCollection 2021 Feb 23.

DOI:10.1021/acsomega.0c05306
PMID:33644570
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7905812/
Abstract

The electrocatalytic performance of carbon paste electrode (CPE) modified with ferrocene-derivative (ethyl2-(4-ferrocenyl[1,2,3]triazol-1-yl)acetate), ionic liquid (-hexyl-3-methylimidazolium hexafluorophosphate), and CoS-carbon nanotube nanocomposite (EFTA/IL/CoS-CNT/CPE) was investigated for the electrocatalytic detection of hydrazine. CoS-CNT nanocomposite was characterized by field emission scanning electron microscopy, X-ray powder diffraction, and transmission electron microscopy. According to the results of cyclic voltammetry, the EFTA/IL/CoS-CNT-integrated CPE has been accompanied by greater catalytic activities for hydrazine oxidation compared to the other electrodes in phosphate buffer solution at a pH 7.0 as a result of the synergistic impact of fused ferrocene-derivative, IL, and nanocomposite. The sensor responded linearly with increasing concentration of hydrazine from 0.03 to 500.0 μM with a higher sensitivity (0.073 μA μM) and lower limit of detection (LOD, 0.015 μM). Furthermore, reasonable reproducibility, lengthy stability, and excellent selectivity were also attained for the proposed sensor. Finally, EFTA/IL/CoS-CNT/CPE was applied for the detection of hydrazine in water samples, and good recoveries varied from 96.7 to 103.0%.

摘要

研究了用二茂铁衍生物（乙基 2-(4-二茂铁基[1,2,3]三唑-1-基)乙酸酯）、离子液体（-己基-3-甲基咪唑六氟磷酸盐）和 CoS-碳纳米管纳米复合材料（EFTA/IL/CoS-CNT/CPE）修饰的碳糊电极（CPE）对肼的电催化检测性能。通过场发射扫描电子显微镜、X 射线粉末衍射和透射电子显微镜对 CoS-CNT 纳米复合材料进行了表征。根据循环伏安法的结果，由于稠合二茂铁衍生物、离子液体和纳米复合材料的协同作用，在 pH 7.0 的磷酸盐缓冲溶液中，与其他电极相比，集成了 EFTA/IL/CoS-CNT 的 CPE 对肼氧化具有更高的催化活性。该传感器对肼浓度从 0.03 到 500.0 μM 的增加呈线性响应，具有较高的灵敏度（0.073 μA μM）和较低的检测限（LOD，0.015 μM）。此外，该传感器还具有良好的重现性、较长的稳定性和出色的选择性。最后，将 EFTA/IL/CoS-CNT/CPE 应用于水样中肼的检测，回收率良好，在 96.7%至 103.0%之间。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/297b/7905812/6cd79fe71ae9/ao0c05306_0010.jpg
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