Simultaneous Electrochemical Determination of Lead and Copper Based on Graphenated Multi-walled Carbon Nanotubes

Enyu Guo

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Simultaneous Electrochemical Determination of Lead and Copper Based on Graphenated Multi-walled Carbon Nanotubes

机译：石墨化多壁碳纳米管同时电化学测定铅和铜

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This work presents a fast and sensitive method for simultaneous electrochemical determination of leadand copper based on a graphenated multi-walled carbon nanotubes (G-MWCNT) modified indium tinoxide electrode (ITO). The G-MWCNT was prepared by electrochemical reduction of graphene oxidewrapped multi-walled carbon nanotubes. The modified ITO was characterized by SEM and 3D opticalsurface profiler Significantly enhanced electrochemical activity was observed in square wave anodicstripping voltammetry compared to that of bare ITO. The G-MWCNT modified ITO showed a widedetection range of lead from 0.05 to 2.5 M with a limit of detection of 6 nM and copper from 0.05 to2.5 M with a limit of detection of 12 nM. Moreover, the proposed sensor exhibited excellent anti- interference property and reproducibility.

机译：这项工作提出了一种基于石墨化多壁碳纳米管（G-MWCNT）修饰的铟锡氧化物电极（ITO）的同时电化学测定铅和铜的快速灵敏的方法。通过电化学还原氧化石墨烯包裹的多壁碳纳米管制备了G-MWCNT。通过SEM和3D光学表面轮廓仪对改性后的ITO进行了表征。与裸ITO相比，方波阳极溶出伏安法观察到电化学活性显着增强。 G-MWCNT改性的ITO的检测范围较宽，铅的检测范围为0.05至2.5 M，检测限为6 nM，铜的检测范围为0.05至2.5 M，检测限为12 nM。此外，所提出的传感器表现出优异的抗干扰性能和再现性。

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《International Journal of Electrochemical Science》 |2015年第9期|共8页
作者
Enyu Guo;
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中图分类化学;
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Simultaneous Electrochemical Determination of Lead and Copper Based on Graphenated Multi-walled Carbon Nanotubes

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