On the mechanism of H2O2 reduction at Prussian Blue modified electrodes

被引：265
|
作者：
Karyakin, AA [1 ]
Karyakina, EE
Gorton, L
机构：
[1] Moscow MV Lomonosov State Univ, Fac Chem, Moscow 119899, Russia
[2] Univ Lund, Dept Analyt Chem, S-22100 Lund, Sweden
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 1999年 / 1卷 / 02期
关键词：
Prussian Blue; stability; wall-jet; hydrogen peroxide; reduction; modified electrodes;
D O I：
10.1016/S1388-2481(99)00010-7
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Prussian Blue deposited on the electrode surface under certain conditions is known to be a selective electrocatalyst of hydrogen peroxide (H2O2) reduction in the presence of O-2. The electrocatalyst was stabilized at cathodic potentials preventing its loss from the electrode surface. Hydrodynamic voltammograms of H2O2 reduction indicated the transfer of two electrons per catalytic cycle. The operational stability of Prussian Blue in H2O2 reduction was highly dependent on the buffer capacity of the supporting electrolyte. Since Prussian Blue is known to be dissolved in alkaline solution, it was confirmed that in neutral aqueous solutions the product of H2O2 electrocatalytic reduction is OH-. (C) 1999 Published by Elsevier Science S.A. All rights reserved.
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页码：78 / 82
页数：5
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