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高等学校化学研究 ›› 2014, Vol. 30 ›› Issue (6): 905-909.doi: 10.1007/s40242-014-4102-2

• Articles • 上一篇    下一篇

Electrochemical Reaction Mechanism of Phenacetin at a Carboxylated Multiwall Carbon Nanotube Modified Electrode and Its Analytical Applications

ZHANG Jinlei1, LAN Cuiling1, SHI Bingfang1, LIU Fang1, ZHAO Dandan1, TAN Xuecai2   

  1. 1. Department of Chemistry and Life Science, Baise University, Baise 533000, P. R. China;
    2. School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, P. R. China
  • 收稿日期:2014-03-25 修回日期:2014-05-04 出版日期:2014-12-01 发布日期:2014-07-07
  • 通讯作者: ZHANG Jinlei, TAN Xuecai E-mail:zhangjl1984123@aliyun.com;xctan@yahoo.cn
  • 基金资助:

    Supported by the National Natural Science Foundation of China(Nos.41063007, 21365004), the Natural Science Foundation of Guangxi Zhuang Autonomous Region, China(Nos.2010GXNSFB013001, 2013GXNSFDA019006) and the Project of the Education Department of Guangxi Zhuang Autonomous Region, China(No.201103YB130).

Electrochemical Reaction Mechanism of Phenacetin at a Carboxylated Multiwall Carbon Nanotube Modified Electrode and Its Analytical Applications

ZHANG Jinlei1, LAN Cuiling1, SHI Bingfang1, LIU Fang1, ZHAO Dandan1, TAN Xuecai2   

  1. 1. Department of Chemistry and Life Science, Baise University, Baise 533000, P. R. China;
    2. School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, P. R. China
  • Received:2014-03-25 Revised:2014-05-04 Online:2014-12-01 Published:2014-07-07
  • Contact: ZHANG Jinlei, TAN Xuecai E-mail:zhangjl1984123@aliyun.com;xctan@yahoo.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.41063007, 21365004), the Natural Science Foundation of Guangxi Zhuang Autonomous Region, China(Nos.2010GXNSFB013001, 2013GXNSFDA019006) and the Project of the Education Department of Guangxi Zhuang Autonomous Region, China(No.201103YB130).

被引次数

3

摘要：

A novel type of carboxylated multiwalled carbon nanotube modified electrode(c-MWCNTs/GCE) was constructed and the electrochemical properties of phenacetin(PHE) at it were studied. In a buffer solution of 0.1 mol/L HAc-NaAc(pH=5.3), PHE exhibited a couple of quasi-reversible redox peaks and an anodic peak in the potential range of 0.2―1.2 V at c-MWCNTs/GCE. The peak current was proportional to the concentration of PHE in the range of 4.0×10-6―1.0×10-4 mol/L with a detection limit of 1.0×10-6 mol/L(S/N=3). The c-MWCNTs/GCE showed excellent repeatability and stability and the electrochemical reaction mechanism of PHE was proposed. This method was used to determine the content of PHE in medical tablets and the recovery was determined to be 96.5%―104.2% by means of a standard addition method.

关键词: Carboxylated multiwalled carbon nanotube, Modified electrode, Phenacetin

Abstract:

A novel type of carboxylated multiwalled carbon nanotube modified electrode(c-MWCNTs/GCE) was constructed and the electrochemical properties of phenacetin(PHE) at it were studied. In a buffer solution of 0.1 mol/L HAc-NaAc(pH=5.3), PHE exhibited a couple of quasi-reversible redox peaks and an anodic peak in the potential range of 0.2―1.2 V at c-MWCNTs/GCE. The peak current was proportional to the concentration of PHE in the range of 4.0×10-6―1.0×10-4 mol/L with a detection limit of 1.0×10-6 mol/L(S/N=3). The c-MWCNTs/GCE showed excellent repeatability and stability and the electrochemical reaction mechanism of PHE was proposed. This method was used to determine the content of PHE in medical tablets and the recovery was determined to be 96.5%―104.2% by means of a standard addition method.

Key words: Carboxylated multiwalled carbon nanotube, Modified electrode, Phenacetin