| 吡硫醇在单壁碳纳米管修饰电极上电化学行为的研究 |
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| 引用本文： | 马啸华,徐茂田,孔粉英.吡硫醇在单壁碳纳米管修饰电极上电化学行为的研究[J].分析试验室,2009,28(12). |
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| 作者姓名： | 马啸华 徐茂田 孔粉英 |
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| 作者单位： | 商丘师范学院化学系,商丘,476000 |
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| 基金项目： | 国家自然科学基金，河南省自然科学基金 |
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| 摘 要： | 研究了吡硫醇在单壁碳纳米管修饰电极上的电化学行为,提出了一种检测吡硫醇的电化学方法.在0.1 mol/L的NaAc-HAc(pH 4.0)缓冲溶液中,吡硫醇在单壁碳纳米管修饰电极上出现一灵敏的氧化峰,峰电位位于0094 V处.与裸玻碳电极相比,单壁碳纳米管修饰电极显著提高了吡硫醇的氧化峰电流.在最佳实验条件下,吡硫醇浓度在9.9×10~(-6)～5.7×10~(-4) mol/L范围内与峰电流呈良好的线性关系,检出限为2.98×10~(-7) mol/L.吡硫醇在单壁碳纳米管修饰电极上的氧化过程受吸附控制,为1电子2质子的过程.
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| 关 键 词： | 单壁碳纳米管 修饰电极 吡硫醇 电化学 |
Electrochemical behavior of pyritinol at a single-wall carbon nanotube-modified electrode |
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| MA Xiao-hua,XU Mao-tian,KONG Fen-ying.Electrochemical behavior of pyritinol at a single-wall carbon nanotube-modified electrode[J].Chinese Journal of Analysis Laboratory,2009,28(12). |
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| Authors: | MA Xiao-hua XU Mao-tian KONG Fen-ying |
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| Affiliation: | MA Xiao-hua,XU Mao-tian and KONG Fen-ying(Department of Chemistry,Shangqiu Normal College,Shangqiu 476000) |
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| Abstract: | The electrochemical behavior of pyritinol at the single-wall carbon nanotube(SWNT)-modified electrode is investigated.In a 0.10 mol/L NaAc-HAc buffer(pH 4.0),pyritinol exhibits a well-defined and sensitive oxidation peak at the SWNT-modified electrode.The oxidation peak potential is at ca.0.94 V(vs.SCE).The oxidation peak current of pyritinol significantly increases at the SWNT-modified electrode in comparison with that at the bare electrode.Under the optimum conditions,the oxidation peak current is proport... |
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| Keywords: | Single-wall carbon nanotube Modified electrod Pyritinol Electrochemistry |
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