Manganese Hexacyanoferrate with Poly(3,4-ethylenedioxythiophene) Hybrid Film Modified Electrode for the Determination of Catechin and Melatonin

The manganese hexacyanoferrate (MnHCF) mixed-valent poly(3,4-Ethylenedioxythiophene) (PEDOT) hybrid film (MnHCF-PEDOT) was prepare on glassy carbon electrode by multiple scan cyclic voltammetry. These materials are characterized using atomic force microscopy (AFM), field emission scanning electron m...

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Bibliographic Details
Published in:International journal of electrochemical science 2011-08, Vol.6 (8), p.3238-3253
Main Authors: Tsai, Tsung-Hsuan, Huang, Yun-Chin, Chen, Shen-Ming
Format: Article
Language:English
Subjects:
Catechin
Electrocatalysis
Manganese hexacyanoferrate
Melatonin
Poly 3,4-Ethylenedioxythiophene
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Summary:The manganese hexacyanoferrate (MnHCF) mixed-valent poly(3,4-Ethylenedioxythiophene) (PEDOT) hybrid film (MnHCF-PEDOT) was prepare on glassy carbon electrode by multiple scan cyclic voltammetry. These materials are characterized using atomic force microscopy (AFM), field emission scanning electron microscope (FE-SEM), energy dispersive spectroscopy (EDS), x-ray diffraction studies (XRD) and electrochemical impedance studies (EIS) techniques. The advantages of these films are demonstrated for detection of catechin and melatonin using cyclic voltammetry and amperometric. The electrocatalytic oxidation of catechin and melatonin at different electrode surfaces such as the bare GCE, MnHCF/GCE and MnHCF-PEDOT/GCE modified electrodes was explored in 0.1 M KCl solution at pH 1.5.The electrochemical sensor for catechin and melatonin exhibited a wide linear response range (0.1 to 4.4 M, R2 = 0.9965 for catechin and 0.1 to 4.6 mM, R2 = 0.9998 for melatonin), lower detection limit (0.01 mM) and fast response time (3 s).In addition, the MnHCF-PEDOT/GCE exhibited a distinct advantage of simple preparation, specificity, stability and reproducibility.
ISSN:1452-3981
1452-3981
DOI:10.1016/S1452-3981(23)18248-4