Pt/DNA-MWCNTs/GC电极制备及其H2O2还原的电催化活性

doi:10.13208/j.electrochem.131165

电化学（中英文） ›› 2014, Vol. 20 ›› Issue (5): 459-464. doi: 10.13208/j.electrochem.131165

• 电化学近期研究专辑（厦门大学姜艳霞教授主编） • 上一篇下一篇

Pt/DNA-MWCNTs/GC电极制备及其H₂O₂还原的电催化活性

范丽丽，武丽娜，屈志宇，刘丹凤，张俊明，樊思明，樊友军^*

广西师范大学化学与药学学院，药用资源化学与药物分子工程教育部重点实验室，广西桂林 541004

收稿日期:2013-12-24 修回日期:2014-04-15 出版日期:2014-10-28 发布日期:2014-04-20
通讯作者: 樊友军 E-mail:youjunfan@mailbox.gxnu.edu.cn
基金资助:
国家自然科学基金项目(No. 21263002)、广西自然科学基金项目(No. 2013GXNSFAA019024)、广西教育厅科学技术研究项目(No. 2013YB026)、药用资源化学与药物分子工程教育部重点实验室课题(No. CMEMR2012-A3)和广西研究生教育创新计划(No. 2010106020703M67)资助

Preparation of Pt/DNA-MWCNTs/GC Electrode and Its Electrocatalytic Activity toward H₂O₂ Reduction

FAN Li-li, WU Li-na, QU Zhi-yu, LIU Dan-feng, ZHANG Jun-ming, FAN Si-ming, FAN You-jun^*

College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), Guilin 541004, Guangxi, China

Received:2013-12-24 Revised:2014-04-15 Published:2014-10-28 Online:2014-04-20
Contact: FAN You-jun E-mail:youjunfan@mailbox.gxnu.edu.cn

摘要/Abstract

摘要： 将DNA功能化多壁碳纳米管（MWCNTs）复合材料修饰于玻碳基底（GC）表面制得DNA-MWCNTs/GC电极，并在此基础上电沉积负载Pt纳米颗粒构建了一种新型无酶H₂O₂传感电极. 利用扫描电子显微镜（SEM）表征制得的修饰电极，同时通过循环伏安法和计时电流法研究了该传感电极的H2O2响应性能. 结果表明，该传感电极的H₂O₂检测在0.04 ~ 18.07 mmol·L^-1浓度范围内成线性相关，检出限3.85 μmol·L^-1（S/N = 3），且有良好的重现性、稳定性与选择性.

关键词: DNA, 功能化, 多壁碳纳米管, Pt, H₂O₂检测

Abstract: The DNA-multi-walled carbon nanotubes (MWCNTs)/glassy carbon (GC) electrode was prepared by modifying the DNA functionalized MWCNTs composite on a GC electrode. A novel non-enzymatic H₂O₂ sensing electrode was fabricated by electrodepositing Pt nanoparticles on the DNA-MWCNTs/GC electrode. The modified electrodes were characterized by scanning electron microscope (SEM). The response properties of the sensing electrode to H₂O₂were investigated by cyclic voltammetry and chronoamperometry. The results indicated that the sensing electrode exhibited a good linear relationship between response current and H₂O₂concentration in the range of 0.04 ~ 18.07 mmol·L^-1 with a detection limit of 3.85 μmol·L^-1 (S/N = 3), as well as excellent reproducibility, stability and selectivity.

Key words: DNA, functionalization, multi-walled carbon nanotubes, Pt, H₂O₂detection

中图分类号:

TP212.3

范丽丽，武丽娜，屈志宇，刘丹凤，张俊明，樊思明，樊友军*. Pt/DNA-MWCNTs/GC电极制备及其H₂O₂还原的电催化活性[J]. 电化学（中英文）, 2014, 20(5): 459-464.

FAN Li-li, WU Li-na, QU Zhi-yu, LIU Dan-feng, ZHANG Jun-ming, FAN Si-ming, FAN You-jun*. Preparation of Pt/DNA-MWCNTs/GC Electrode and Its Electrocatalytic Activity toward H₂O₂ Reduction[J]. Journal of Electrochemistry, 2014, 20(5): 459-464.

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Pt/DNA-MWCNTs/GC电极制备及其H₂O₂还原的电催化活性

Preparation of Pt/DNA-MWCNTs/GC Electrode and Its Electrocatalytic Activity toward H₂O₂ Reduction

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