Application of poly(3,4-ethylenedioxythiophene)/manganese dioxide composite-modified electrode for sensitive electrochemical detection of luteolin

Yinxiu Zuo, Jingkun Xu, Kaixin Zhang, Xuemin Duan, Limin Lu, Liping Wu, Guo Ye, Youshan Zhang, Huakun Xing, Liqi Dong, Hui Sun, Xiaofei Zhu

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)
33 Downloads (Pure)

Abstract

In this work, the electrochemical determination of luteolin using poly(3,4-ethylenedioxythiophene)/manganese dioxide nanocomposite modified glassy carbon electrode (PEDOT/MnO2/GCE) is reported. PEDOT/MnO2 nanocomposite has been proposed via a simple two-step deposition approach. Electrochemical results revealed that PEDOT/MnO2 showed enhanced electrocatalytic performance toward luteolin, which might be attributed to good conductivity and accelerated electron transfer of PEDOT and good catalytic effect of MnO2. Experimental conditions, including pH values and scan rates were optimized. In optimal conditions, a good linear relationship was found between oxidation peak currents and the concentration of luteolin in 5.0 nM-7.0 μM range. The detection limit was calculated to be 1.8 nM at a signal-to-noise ratio of 3. Finally, the applicability for luteolin determination in real samples was successfully demonstrated.

Original languageEnglish
Pages (from-to)3776-3785
Number of pages10
JournalInternational Journal of Electrochemical Science
Volume11
Issue number5
DOIs
Publication statusPublished - 1 May 2016

Bibliographical note

Copyright the Author(s) 2016. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • Luteolin
  • Manganese dioxide
  • Poly(3,4-ethylenedioxythiophene)
  • Two-step deposition

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