首页> 外文期刊>Microchemical Journal: Devoted to the Application of Microtechniques in all Branches of Science >A simple dopamine sensor using graphdiyne nanotubes and shortened carbon nanotubes for enhanced preconcentration and electron transfer
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A simple dopamine sensor using graphdiyne nanotubes and shortened carbon nanotubes for enhanced preconcentration and electron transfer

机译:使用Graphdiyne纳米管和缩短的碳纳米管的简单的多巴胺传感器,用于增强的预浓缩和电子转移

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摘要

High-quality tremella-like graphdiyne (GDY) nanotubes composed of intertwined ultrathin nanosheets were acidified. Shortened and acidified multi-walled carbon nanotubes (S-MWCNTs) were simply blended with GDY in a certain proportion to modify glassy carbon electrode (GCE). Electrochemical behavior of DA was studied on different modified electrodes. GDY showed high preconcentration to DA. S-MWCNTs facilitated the electron transport and promoted the oxidation of DA. Differential pulse voltammetry (DPV) was applied to determine low concentrations of DA. It exhibited a linear response in the concentration range of 0.02 to 20.0 mu M with an estimated detection limit of 8.6 nM (S/N = 3). This sensor showed excellent performances for detection of DA in biological fluids.
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