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Electrode Modified by Carbon Nanotubes and Poly(3,4-ethylenedioxythiophene)


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Electrode Modified by Carbon Nanotubes and Poly(3,4-ethylenedioxythiophene)
CHE Jian-feiYE Xin-xinLIU Wen-tingHE Lei
School of Chemical Engineering,NUST,Nanjing 210094,China
carbon nanotubes poly(34-ethylenedioxythiophene) modified electrode conducting polymers chemical self-assembly methods electrochemical polymerization
To overcome the shortcomings of weak signal transduction and limited biocompatibility of traditional electrode,the electrode is modified by carbon nanotubes and conducting polymer for an ideal roughness surface and bigger activity interface area.Single-walled carbon nanotubes(SWNTs)are modified on the surface of gold electrode by the chemical self-assembly method.The electrode is modified by the conducting polymer poly(3,4-ethylenedioxythiophene)by electrochemical polymerization.Raman spectrum and electron microscopy analysis confirm that the self-assembled SWNTs and conducting polymer perform a good compound modified layer onto the gold electrode surface.After the electrode being modified,the redox peak-to-peak separation decreases from 70 mV to 65 mV,the enclosed area of the cyclic voltammetry(CV)curve increases,and the electron flux of the electrode surface is improved.


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Last Update: 2012-11-02