| 蒿甲醚在单壁碳纳米管修饰电极上的电催化还原 |
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| 引用本文： | 周群,段德良,王光灿,王庆忠,曹秋娥,丁中涛. 蒿甲醚在单壁碳纳米管修饰电极上的电催化还原[J]. 分析测试学报, 2010, 29(10). DOI: 10.3969/j.issn.1004-4957.2010.10.003 |
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| 作者姓名： | 周群 段德良 王光灿 王庆忠 曹秋娥 丁中涛 |
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| 作者单位： | 1. 云南大学,化学科学与工程学院,云南,昆明,650091
2. 云南大学,现代分析测试中心,云南,昆明,650091 |
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| 基金项目： | 云南大学博士科研启动基金，云南省教育厅科学研究基金重点项目，云南大学理工科校基金重点项目 |
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| 摘 要： | 研制了单壁碳纳米管(SWCNTs)修饰玻碳电极。用交流阻抗谱法(EIS)和扫描电镜(SEM)研究了电极膜性能,应用循环伏安法(CV)、计时库仑法(CC)、计时电流法(CA)研究了蒿甲醚在修饰电极上的电化学行为。结果表明,SWCNTs修饰电极对蒿甲醚的还原有良好的电催化活性,其还原反应为双电子过程,电极反应的扩散系数及速率常数分别为6·67×10-4cm2·s-1及8·54×10-2mol·L-1·s-1。在优化实验条件下,还原峰的峰电位位于-0·85V,其峰电流与蒿甲醚浓度在6·71×10-7~2·45×10-4mol·L-1范围内呈良好线性,检出限达4·02×10-7mol·L-1,相对标准偏差(n=10)为4·2%,可用于蒿甲醚样品的含量测定。
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| 关 键 词： | 单壁碳纳米管 化学修饰电极 蒿甲醚 循环伏安法 电催化还原 |
Electrocatalytic Reduction of Artemether at Single-walled Carbon Nanotubes Modified Electrode |
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| ZHOU Qun,DUAN De-liang,WANG Guang-can,WANG Qing-zhong,CAO Qiu-e,DING Zhong-tao. Electrocatalytic Reduction of Artemether at Single-walled Carbon Nanotubes Modified Electrode[J]. Journal of Instrumental Analysis, 2010, 29(10). DOI: 10.3969/j.issn.1004-4957.2010.10.003 |
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| Authors: | ZHOU Qun DUAN De-liang WANG Guang-can WANG Qing-zhong CAO Qiu-e DING Zhong-tao |
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| Affiliation: | ZHOU Qun1,DUAN De-liang1,WANG Guang-can2,WANG Qing-zhong1,CAO Qiu-e1,DING Zhong-tao1(1.School of Chemical Science and Technology,Yunnan University,Kunming 650091,China,2.Advanced Analysis and Measurement Center,China) |
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| Abstract: | A single-walled carbon nanotubes(SWCNTs)modified glassy carbon electrode(SWCNTs/GCE)was prepared.The prepared films were characterized by scanning electron microscopy(SEM)and electrochemical impedance spectroscopy(EIS).The SEM results showed that SWCNTs/GCE electrode was coated with a film of intricate network with nano structure through SWCNT homogeneous distribution in N,N-dimethylformamide(DMF)solution.The EIS results showed that SWCNTs/GCE electrode had good electrocatalytic response for the electron tr... |
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| Keywords: | single-walled carbon nanotubes chemically modified electrode artemether cyclic voltammetry(CV) electrocatalytic reduction |
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