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电化学(中英文) ›› 2007, Vol. 13 ›› Issue (1): 72-76.  doi: 10.61558/2993-074X.1783

• 研究论文 • 上一篇    下一篇

多壁碳纳米管修饰玻碳电极用于过氧化氢的检测

王红娟;周春梅;余皓;彭峰;方锦坤;   

  1. 华南理工大学化工与能源学院,华南理工大学化工与能源学院,华南理工大学化工与能源学院,华南理工大学化工与能源学院,华南理工大学化工与能源学院 广东广州510641,广东省绿色化学品技术重点实验室,广东广州510641,广东广州510641,广东广州510641,广东省绿色化学品技术重点实验室,广东广州510641,广东广州510641,广东省绿色化学品技术重点实验室,广东广州510641,广东广州510641
  • 收稿日期:2007-02-28 修回日期:2007-02-28 出版日期:2007-02-28 发布日期:2007-02-28

MWNTs Modified GC Electrode for Hydrogen Peroxide Determination

WANG Hong-juan1,2*,ZHOU Chun-mei 1,YU Hao 1,2,PENG Feng 1,2,FANG Jin-kun 1   

  1. (1.School of Chemical Engineering and Energy,South China University of Technology,Guangzhou 510641,Guangdong,China,2.Guangdong Provincial Key Lab for Green Chemical Product Technology,GuangZhou 510641,Guangdong,China
  • Received:2007-02-28 Revised:2007-02-28 Published:2007-02-28 Online:2007-02-28

摘要: 构建用于过氧化氢检测的多壁碳纳米管修饰玻碳电极,循环伏安阳极最大电流法和计时安培电流法测试表明:碳纳米管能提高电极的有效表面积,并加速电子的传递.循环伏安阳极最大电流和计时安培响应电流均与过氧化氢的浓度变化成线性关系,两种检测方法的灵敏度和线性相关系数分别为2.8μA/(mmol.L-1)、0.997和1.5μA/(mmol.L-1)、0.971;检测方法过程简单,结果令人满意.

关键词: 多壁碳纳米管修饰玻碳电极, 循环伏安, 计时安培, 过氧化氢, 生物传感器

Abstract: A MWNTs modified GC electrode was constructed successfully to be used to detect hydrogen peroxide.Two methods of maximum anodic current of cyclic voltommogram and chronoamperometry were adopted to measure the concentration of hydrogen peroxide.The results show that the MWCNTs can enlarge the effective surface area of GC electrode and can enormously enhance the electron transfer.The sensitivity and correlation coefficient for hydrogen peroxide detection are 2.84 μA/mmol·L-1,0.997 and 1.5 μA/mmol·L-1,0.971 for cyclic voltammetry and chronoamperometry,respectively.The procedure of the two methods to detect hydrogen peroxide is simple,and the results obtained are satisfied.

Key words: MWNTs modified GC electrode, voltammetry, chronoamperometry, hydrogen peroxide, biosensor

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