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.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2006年第7期860-862,共3页
Chemical Research and Application
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
multi-walled carbon nanotubes
p- nitrophenol
chemically modified electrode
electrochemical behavior
