| 多巴胺在多壁碳纳米管修饰电极上的电化学行为 |
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| 引用本文： | 叶芳,南俊民.多巴胺在多壁碳纳米管修饰电极上的电化学行为[J].韶关学院学报,2009,30(9):66-70. |
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| 作者姓名： | 叶芳 南俊民 |
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| 作者单位： | 1. 韶关学院,化学与环境工程学院,广东,韶关,512005
2. 华南师范大学,化学与环境工程学院,广东,广州,510006 |
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| 摘 要： | 采用循环伏安法、微分脉冲伏安法、计时安培法研究多巴胺（DA）在多壁碳纳米管修饰电极上的电化学行为,计算得到了多壁碳纳米管修饰电极有效面积Aeff以及DA电化学氧化过程的一些重要参数.实验结果显示,本实验条件下DA在碳纳米管修饰电极上的氧化反应受吸附过程控制.微分脉冲伏安结果显示,催化氧化峰电流与DA浓度在5×10-5 mol/L至5×10-7 mol/L范围内呈良好的线性关系,检出限达4.0×10-8 mol/L（S/N=3）.
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| 关 键 词： | 电化学 多壁碳纳米管 修饰电极 多巴胺 |
Electrochemical behavior of dopamine on multi-walled carbon nanotube modified electrode |
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| YE Fang,NAN Jun-min.Electrochemical behavior of dopamine on multi-walled carbon nanotube modified electrode[J].Journal of Shaoguan University(Social Science Edition),2009,30(9):66-70. |
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| Authors: | YE Fang NAN Jun-min |
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| Institution: | 1. College of Chemistry and Environment Engineering, Shaoguan University, Shaoguan, 512005, Guangdong, China; 2. College of Chemistry and Environment Engineering, South China Normal University, Guangzhou 510006, Guangdong, China) |
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| Abstract: | Electrochemical behavior of dopamine on multi-walled carbon nanotube modified electrode was in- vestigated, using cyclic vohammetry, chronoamperometry, differential pulse voltammograms as well as mechani- cal calculations. The effective area of muhi-walled carbon nanotube modified electrode, Aeff and other param- eters could be involved in this paper. The results of cyclic vohammetry suggested that the reactive process of dopamine on multi-walled carbon nanotube modified electrode was controlled by adsorption. In 0.05 mol/L phosphate buffer （pH=6.0）, when differential pulse voltammetric method was used, there was an excellent lin- earity between oxidation current and concentration of DA in the range of 5×10^-5 mol/L to 5×10^-7 mol/L with a detection limit of 4.0 ×10^-8 mol/L. |
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| Keywords: | electrochemical multi-walled carbon nanotube modified electrode dopamine |
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