Electrochemical Properties of Tungstogermanate and Electrocatalysis of H2O2 on GeW11Co/P-oPD/GC Electrode

Authors

Li-Li ZHU
Jian-Ying QU
Jue WANG
Hao-Yue FENG

Corresponding Author

Jian-Ying QU(lilyqujy@yahoo.com.cn)

Abstract

The electrochemical properties of Co-substituted trimeric tungstogermanate containing Keggin fragments were studied. Cyclic voltammograms revealed two couples of reversible redox peaks on glassy carbon (GC) electrode in acid solutions. They corresponded to two-electron reductions accompanying by the additions of four protons and three protons, respectively, both were controlled by adsorption. The differences in the peak potentials of 2-electron-4-proton and 2-electron-3-proton reactions were 31 mV and 35 mV, respectively..Furthermore, the tungstogermanate (GeW11Co) modified GC electrode with functionalization by poly(o-phenylenediamine) (P-oPD) was prepared readily by electropolymerization. The GeW11Co/P-oPD/GC electrode could electrocatalyze the reduction of hydrogen peroxide, which showed good stability and quick response.

Graphical Abstract

Keywords

polyoxometalate, poly(o-phenylenediamine), chemically modified electrode, electrocatalytic reduction, hydrogen peroxide

DOI Link

https://doi.org/10.61558/2993-074X.2863

Publication Date

2011-11-28

Online Available Date

2011-09-29

Revised Date

2011-08-04

Received Date

2011-07-18

Recommended Citation

Li-Li ZHU, Jian-Ying QU, Jue WANG, Hao-Yue FENG. Electrochemical Properties of Tungstogermanate and Electrocatalysis of H2O2 on GeW11Co/P-oPD/GC Electrode[J]. Journal of Electrochemistry, 2011 , 17(4): Article 10.
DOI: 10.61558/2993-074X.2863
Available at: https://jelectrochem.xmu.edu.cn/journal/vol17/iss4/10

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