Fabrication of a polymer/mediator composite modified electrode and its application to electrochemical detection of iodate

Ta Jen Li, Chia Yu Lin, A. Balamurugan, Chung Wei Kung, Jen Yuan Wang, Chih Wei Hu, Chun Chieh Wang, Po Yen Chen, R. Vittal, Kuo Chuan Ho

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

A polymer/mediator composite modified glassy carbon electrode (GCE) is fabricated for electrochemical detection of iodate (IO 3 -). Flavin adenine dinucleotide (FAD) is chosen as mediator for sensing iodate, and 3,4 ethylenedioxythiophene (EDOT) is chosen for entrapping FAD and forming a conducting polymeric matrix, poly(3,4 ethylenedioxythiophene) (PEDOT). The PEDOT/FAD modification layer is electrodeposited on the GCE by cyclic voltammetric (CV) method. It is noted that FAD can enhance the electrodeposition of PEDOT, and possible reasons are proposed to explain this phenomenon. The optimal cycle number for preparing the modified electrode is determined to be 9. The relationship between the formal potential of FAD and the pH value is studied. Two slopes, 60.4 and 29.2 mV per pH unit, are recorded in the ranges of 1.5 ≦ pH ≦ 8.5 and 8.5 ≦ pH ≦ 11.5, respectively. Additionally, it is found that the oxidation current of iodate increases significantly with the decrease of pH value.

Original languageEnglish
Pages (from-to)1453-1456
Number of pages4
JournalProcedia Engineering
Volume25
DOIs
Publication statusPublished - 2011 Dec 1
Event25th Eurosensors Conference - Athens, Greece
Duration: 2011 Sep 42011 Sep 7

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Glassy carbon
Fabrication
Electrodes
Composite materials
Polymers
Electrodeposition
Oxidation

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Li, Ta Jen ; Lin, Chia Yu ; Balamurugan, A. ; Kung, Chung Wei ; Wang, Jen Yuan ; Hu, Chih Wei ; Wang, Chun Chieh ; Chen, Po Yen ; Vittal, R. ; Ho, Kuo Chuan. / Fabrication of a polymer/mediator composite modified electrode and its application to electrochemical detection of iodate. In: Procedia Engineering. 2011 ; Vol. 25. pp. 1453-1456.
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abstract = "A polymer/mediator composite modified glassy carbon electrode (GCE) is fabricated for electrochemical detection of iodate (IO 3 -). Flavin adenine dinucleotide (FAD) is chosen as mediator for sensing iodate, and 3,4 ethylenedioxythiophene (EDOT) is chosen for entrapping FAD and forming a conducting polymeric matrix, poly(3,4 ethylenedioxythiophene) (PEDOT). The PEDOT/FAD modification layer is electrodeposited on the GCE by cyclic voltammetric (CV) method. It is noted that FAD can enhance the electrodeposition of PEDOT, and possible reasons are proposed to explain this phenomenon. The optimal cycle number for preparing the modified electrode is determined to be 9. The relationship between the formal potential of FAD and the pH value is studied. Two slopes, 60.4 and 29.2 mV per pH unit, are recorded in the ranges of 1.5 ≦ pH ≦ 8.5 and 8.5 ≦ pH ≦ 11.5, respectively. Additionally, it is found that the oxidation current of iodate increases significantly with the decrease of pH value.",
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Fabrication of a polymer/mediator composite modified electrode and its application to electrochemical detection of iodate. / Li, Ta Jen; Lin, Chia Yu; Balamurugan, A.; Kung, Chung Wei; Wang, Jen Yuan; Hu, Chih Wei; Wang, Chun Chieh; Chen, Po Yen; Vittal, R.; Ho, Kuo Chuan.

In: Procedia Engineering, Vol. 25, 01.12.2011, p. 1453-1456.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Fabrication of a polymer/mediator composite modified electrode and its application to electrochemical detection of iodate

AU - Li, Ta Jen

AU - Lin, Chia Yu

AU - Balamurugan, A.

AU - Kung, Chung Wei

AU - Wang, Jen Yuan

AU - Hu, Chih Wei

AU - Wang, Chun Chieh

AU - Chen, Po Yen

AU - Vittal, R.

AU - Ho, Kuo Chuan

PY - 2011/12/1

Y1 - 2011/12/1

N2 - A polymer/mediator composite modified glassy carbon electrode (GCE) is fabricated for electrochemical detection of iodate (IO 3 -). Flavin adenine dinucleotide (FAD) is chosen as mediator for sensing iodate, and 3,4 ethylenedioxythiophene (EDOT) is chosen for entrapping FAD and forming a conducting polymeric matrix, poly(3,4 ethylenedioxythiophene) (PEDOT). The PEDOT/FAD modification layer is electrodeposited on the GCE by cyclic voltammetric (CV) method. It is noted that FAD can enhance the electrodeposition of PEDOT, and possible reasons are proposed to explain this phenomenon. The optimal cycle number for preparing the modified electrode is determined to be 9. The relationship between the formal potential of FAD and the pH value is studied. Two slopes, 60.4 and 29.2 mV per pH unit, are recorded in the ranges of 1.5 ≦ pH ≦ 8.5 and 8.5 ≦ pH ≦ 11.5, respectively. Additionally, it is found that the oxidation current of iodate increases significantly with the decrease of pH value.

AB - A polymer/mediator composite modified glassy carbon electrode (GCE) is fabricated for electrochemical detection of iodate (IO 3 -). Flavin adenine dinucleotide (FAD) is chosen as mediator for sensing iodate, and 3,4 ethylenedioxythiophene (EDOT) is chosen for entrapping FAD and forming a conducting polymeric matrix, poly(3,4 ethylenedioxythiophene) (PEDOT). The PEDOT/FAD modification layer is electrodeposited on the GCE by cyclic voltammetric (CV) method. It is noted that FAD can enhance the electrodeposition of PEDOT, and possible reasons are proposed to explain this phenomenon. The optimal cycle number for preparing the modified electrode is determined to be 9. The relationship between the formal potential of FAD and the pH value is studied. Two slopes, 60.4 and 29.2 mV per pH unit, are recorded in the ranges of 1.5 ≦ pH ≦ 8.5 and 8.5 ≦ pH ≦ 11.5, respectively. Additionally, it is found that the oxidation current of iodate increases significantly with the decrease of pH value.

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