Open AccessElectroactive polyurea/CNT composite-based electrode for detection of vitamin C
Author(s) -
Tzu-Ling Huang,
Lu-Chen Yeh,
Guan-Hui Lai,
Fang-Yu Lai,
TaI Yang,
Yu-Pei Huang,
An-Ya Lo,
JuiMing Yeh
Publication year - 2016
Publication title -
express polymer letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.695
H-Index - 72
ISSN - 1788-618X
DOI - 10.3144/expresspolymlett.2016.43
Subject(s) - polyurea , materials science , carbon nanotube , detection limit , cyclic voltammetry , composite number , electrode , aniline , composite material , chemical engineering , electrochemistry , organic chemistry , polyurethane , chemistry , chromatography , engineering
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