对硝基苯酚在多壁碳纳米管修饰玻碳电极上的电化学行为及分析测定  

Electrochemical behavior and determination of p-nitrophenol at a multi-wall carbon nanotubes modified glassy carbon electrode

作　　者：任健敏[1] 许元妹[1] 曾百肇[2] 

机构地区：[1]韶关学院化学系,广东韶关512000 [2]武汉大学化学与分子科学学院,湖北武汉430072

出　　处：《化学研究与应用》2006年第7期860-862,共3页Chemical Research and Application

摘　　要：The electrochemical behavior of p-nitrophenol at a multi-wall nanotubes（MWCNT）modified glassy carbon electrode（GCE）was investigated.It was found that in the NH4Cl buffer,p-nitrophenol exhibited a sensitive oxidation peak at about 0.067V.The oxidation peak current is linear with the concentration of p-nitrophenol over the range from 3.4×10-5 to 2.5×10-3mol·L-1.The correlation coefficient is 0.9992.The detection limit was 2.2×10-7mol·L-1at the accumulation time of 3 min.Thus a sensitive and simple electrochemical method was developed for determination of the p-nitrophenol.The MWCNT modified GCE exhibits catalytic activity to the oxidation of p-nitrophenol.The modified electrode shows good stability and reproductibility.The electrochemical behavior of p -nitrophenol at a multi -wall nanotabes （MWCNT） modified glassy carbon electrode （GCE） was investigated. It was found that in the NH4Cl buffer, p -nitrophenol exhibited a sensitive oxidation peak at about 0. 067V. The oxidation peak current is linear with the concentration of p - nitrophenol over the range from 3.4 × 10 -5 to 2. 5 × 10 -3 mol · L^-1. The correlation coefficient is 0. 9992. The detection limit was 2. 2 × 10^-7 mol·L^-1 at the accumulation time of 3 min. Thus a sensitive and simple electrochemical method was developed for determination of the p - nitrophenol. The MWCNT modified GCE exhibits catalytic activity to the oxidation of p - nitxophenol. The modified electrode shows good stability and reproductibility.

关 键 词：多壁碳纳米管 对硝基苯酚 化学修饰电极 电化学行为 

分 类 号：O657.15[理学—分析化学]