Electroactive polyurea/CNT composite-based electrode for detection of vitamin C

Electroactive polyurea/CNT composite-based electrode for detection of vitamin C

The electrocatalytic oxidation of vitamin C at carbon paste electrode (CPE) modified with amino-functionalized multiwalled carbon nanotube/electroactive polyurea (AF-MWCNT/EPU) composite was investigated. We have synthesized novel electroactive polyurea composites containing MWCNTs functionalized wi...

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Bibliographic Details
Main Authors: T. C. Huang, L. C. Yeh, G. H. Lai, F. Y. Lai, T. I. Yang, Y. J. Huang, A. Y. Lo, J. M. Yeh
Format: Article
Language:English
Published: Budapest University of Technology and Economics 2016-06-01
Series:eXPRESS Polymer Letters
Subjects:
Polymer composites
Electroactive polyurea
Sensor
Online Access:http://www.expresspolymlett.com/letolt.php?file=EPL-0006745&mi=cd
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Summary:The electrocatalytic oxidation of vitamin C at carbon paste electrode (CPE) modified with amino-functionalized multiwalled carbon nanotube/electroactive polyurea (AF-MWCNT/EPU) composite was investigated. We have synthesized novel electroactive polyurea composites containing MWCNTs functionalized with 4-aminobenzoyl groups by an oxidative coupling polymerization. Ultraviolet-Visible spectra and cyclic voltammetry studies confirmed the occurrence of efficient interaction between AF-MWCNT and EPU graft. Moreover, the electrocatalytic activity of vitamin C oxidation by utilizing aniline containing composites was evaluated, showing that the intrinsic electroactivity of AF-MWCNT/EPU-CPE had great potential application for detection of vitamin C. The detection limit and sensitivity of this sensor was 1.2 μM and 35.3 μA•mM–1, respectively.
ISSN:1788-618X

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