A Mexacarbate Electrochemical Biosensor on Carbon Materials Based on a Functionalized Multiwalled Carbon Nanotube Modified Glassy Carbon Electrode

J. Tharini; Tse-Wei Chen; Shen-Ming Chen; R. Saraswathi; Mohamed S. Elshikh; Noura M.Darwish; Syang-Peng Rwei

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A Mexacarbate Electrochemical Biosensor on Carbon Materials Based on a Functionalized Multiwalled Carbon Nanotube Modified Glassy Carbon Electrode

机译：基于功能化的多壁碳纳米管修饰的玻碳电极的碳材料上的灭草威碳酸盐电化学生物传感器

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The commercial multi-walled carbon nanotube (MWCNT) was carboxylated using sulphuric and nitricacid and characterized by various techniques such as scanning eletron spectroscopy, Infra-redspectroscopy and atomic force microscopy. The acid functionalized multiwalled carbon nanotube servesas the effective matrix for the sensing of carbamate pesticide namely mexacarbate. The electrochemicaloxidation of mexacarbate at GCE and MWCNT/GCE follows heterogeneous electron transfer reaction.Different experimental parameters such as the effect of scan rate and pH were studied. Rotating diskelectrode voltammetry studies confirms the one-electron transfer reaction. The sensor calibration plotfor mexacarbamate was constructed by means of pulse technique. The acid functionalized multiwalledcarbon nanotube sensor was applied to real water sample with the recovery percentage of 85-89%.

机译：使用硫酸和硝酸对商品化的多壁碳纳米管（MWCNT）进行羧化，并通过多种技术进行表征，例如扫描电子光谱，红外光谱和原子力显微镜。酸官能化的多壁碳纳米管可作为感测氨基甲酸酯农药即甲碳酸盐的有效基质。甲碳酸盐在GCE和MWCNT / GCE上的电化学氧化遵循电子转移反应。研究了不同的实验参数，如扫描速率和pH的影响。旋转盘电极伏安法研究证实了单电子转移反应。通过脉冲技术建立了氨基甲酸酯的传感器校准图。将酸官能化的多壁碳纳米管传感器应用于实际水样中，回收率达到85-89％。

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《International Journal of Electrochemical Science》 |2019年第8期|共15页
作者
J. Tharini; Tse-Wei Chen; Shen-Ming Chen; R. Saraswathi; Mohamed S. Elshikh; Noura M.Darwish; Syang-Peng Rwei;
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中图分类化学;
关键词
Mexacarbatedifferential pulse voltammetrymulti-walled carbon nanotubeglassy carbon electrodecalibration plot;

机译：碳酸甲酯差动脉冲伏安法多壁碳纳米管玻璃碳电极校准图;

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A Mexacarbate Electrochemical Biosensor on Carbon Materials Based on a Functionalized Multiwalled Carbon Nanotube Modified Glassy Carbon Electrode

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