Investigation of H2O2 Electrochemical Behavior on Ferricyanide-Confined Electrode Based on Ionic Liquid-Functionalized Silica-Mesostructured Cellular Foam

In this work, ionic liquid (IL) of 1-propyl-3-methyl imidazolium chloride-functionalized silica-mesostructured cellular foam (MCF) was prepared. The obtained MCF-IL was used to construct the Fe(CN)63−-confined electrode (MCF-IL-Fe(CN)63−/PVA) and H2O2 electrochemical behavior on the electrode was in...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2022-12, Vol.27 (24), p.9028
Main Authors: Zhang, Ling, Ma, Zhenkuan, Fan, Yun, Jiao, Songlin, Yu, Zhan, Chen, Xuwei
Format: Article
Language:English
Subjects:
Acids
Adsorption
Biosensors
Catalysts
Chemical reduction
Electrochemical analysis
Electrochemistry
Electrodes
Enzymes
Ferricyanide
Hydrogen peroxide
Investigations
ionic liquid
Ionic liquids
Nitrogen
Pigments
Pore size
Prussian blue
reduction
Sensors
Silica
silica mesostructured cellular foam
Voltammetry
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Summary:In this work, ionic liquid (IL) of 1-propyl-3-methyl imidazolium chloride-functionalized silica-mesostructured cellular foam (MCF) was prepared. The obtained MCF-IL was used to construct the Fe(CN)63−-confined electrode (MCF-IL-Fe(CN)63−/PVA) and H2O2 electrochemical behavior on the electrode was investigated. It was found that H2O2 was oxidized on the freshly prepared electrode while catalytically electro-reduced on the acid pretreated one. Cyclic voltametric results revealed that the real catalyst for catalytic reduction of H2O2 was Prussian blue (PB) rather than Fe(CN)63−. The electrocatalytic ability of the acid-pretreated MCF-IL-Fe(CN)63−/PVA electrode offered a wide linear range for H2O2 detection. The present study on H2O2 electrochemical behavior on an MCF-IL-Fe(CN)63−/PVA electrode might provide useful information for further developing integrated Fe(CN)63−-mediated biosensors as H2O2 is extensively involved in the classic reaction containing oxidase enzymes.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules27249028