摘要
以壳聚糖(CS)为多壁碳纳米管(MWNTs)的分散介质,通过MWNTs/CS膜上大量氨基静电吸附纳米金粒子(nanoAu),使玻碳电极(GCE)表面形成稳定的nanoAu-MWNTs-CS-GCE修饰层,并采用电化学方法初步研究了该修饰电极的性能.探讨了吲哚乙酸(IAA)在该修饰电极上的电化学行为,结果表明,在5～200μmol/L浓度范围内以及0.78V电位条件下,以循环伏安法(CV)测得的氧化峰电流变化值与c(IAA)呈良好的线性关系,其回归方程为y=2.34×10-4+0.14x,检出限为8.33×10-6mol/L,相关系数为0.9997.
This study was making use of chitosant as a dispersion medium of multi-walled carbon nanotubes （MWNTs） and formed a stabilizating nanoAu-MWNTs-CS-GCE layer via MWNTs/chitosant with positive charges adsorption of nanoAu with negative charges. Electrochemical method was selected to investigate the performance of the modified electrode and the electrochemical behavior of indole-3-acetic acid. The catalytic current of IAA versus its concentration had a good linearity in a concentration range of 5--200 μmol/L at around -0. 78 V with a detection limit of 8.33× 10-6 mol/L and a correlation coefficient of 0. 9997.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2010年第1期33-37,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:20605009)资助
关键词
吲哚乙酸
壳聚糖
碳纳米管
纳米金
循环伏安法
Indole-3-acetic acid
Chitosant
Multi-walled carbon nanotubes（MWNTs）
NanoAu
Cyclic voltammogram
