Controllable synthesis of multi-walled carbon nanotubes/poly(3,4- ethylenedioxythiophene) core-shell nanofibers with enhanced electrocatalytic activity

Kaixin Zhang, Jingkun Xu, Xuemin Duan*, Limin Lu, Dufen Hu, Long Zhang, Tao Nie, Kenneth B. Brown

*Corresponding author for this work

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Core-shell structured poly(3,4-ethylenedioxythiophene)/multi-walled carbon nanotubes (PEDOT/MWCNTs) nanofibers were synthesized through an interfacial polymerization technique. The interfacial polymerization at a liquid-liquid interface allowed PEDOT to grow uniformly on the surface of MWCNTs due to the presence of π-π interactions between PEDOT and MWCNTs walls. The morphology, structure and composition of the as-prepared PEDOT/MWCNTs were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), Raman spectroscopy and Fourier transform infrared spectroscopy (FT-IR). In addition, the electrocatalytic properties of PEDOT/MWCNTs toward redox reactions of magnolol, a widely used traditional Chinese medicine, were systematically investigated. The results showed that the PEDOT/MWCNTs nanofibers exhibited a distinctly higher activity for the detection of magnolol compared with those of pure MWCNTs and PEDOT. The remarkably enhanced activity for the nanofibers can be attributed to the unique configuration and synergistic contribution between PEDOT and MWCNTs. The presented method is a general, facile and green approach for the synthesis of polymer/CNTs nanofibers, which is significant for the development of high performance electrocatalysts for biosensing and fuel cell applications.

Original languageEnglish
Pages (from-to)518-525
Number of pages8
JournalElectrochimica Acta
Volume137
DOIs
Publication statusPublished - 10 Aug 2014
Externally publishedYes

Keywords

  • multi-walled carbon nanotubes
  • poly(3,4-ethylenedioxythiophene)
  • determination
  • magnolol

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