A Novel of Multi-wall Carbon Nanotubes/Chitosan Electrochemical Sensor for Determination of Cupric ion

2017 International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Tan, Funeng^1 ; Li, Lei^1

Chemical and Engineering Institute, Wenshan University, Wenshan, Yunnan

663000, China^1

关键词: AC-impedance;    Bare electrode;    Cyclic voltammograms;    Diffusion controlled;    Electrocatalytic activity;    Electrochemical behaviors;    Electrochemical probe;    Modified electrodes;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/322/4/042018/pdf
DOI  :  10.1088/1757-899X/322/4/042018

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A multi-wall carbon nanotubes/Chitosan electrochemical sensor had been fabricated by dropping CHS/MWNT solution directly onto the GC surface. The sensor was charactered by cyclic voltammetry and AC impedance with K3Fe(CN)6as a electrochemical probe; Cyclic voltammograms(CV) and electrochemical impedance spectroscopy(EIS) indicated that the active area and electrochemical behavior of the sensor increased and improved significantly after the electrode was modified by carbon nanotubes dispersed by the chitosan. The sensor showed good electrocatalytic activity of K3Fe(CN)6. Also, from the cyclic voltammograms, we can see the process was diffusion controlled on the bare electrode and kinetics and diffusion controlled on the modified electrode. Finally Cu2+responsed sensitively at the sensor which supplied a new method for the detection of Cu2+.