Characterization and electrocatalytic properties of cobalt hexacyanoferrate films

被引:107
作者
Chen, SM [1 ]
机构
[1] Natl Taipei Univ Technol, Dept Chem Engn, Taipei 10643, Taiwan
关键词
cobalt hexacyanoferrate films; modified electrodes; oxidation; electrocatalysis;
D O I
10.1016/S0013-4686(98)00074-7
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Electrodes modified with cobalt(II) hexacyanoferrate films were synthesized in solutions of various sodium ion concentrations by consecutive cyclic voltammetry. In a 0.1 M NaNO3 electrolyte solution, the voltammetric response was characterized by a single redox couple, while in a 1.0 M NaNO3 electrolyte solution two distinct redox couples appeared. Film characteristics dependent on the hexacyanoferrate: cobalt(II) ratio were also investigated. The electrochemical and spectroscopic properties of these films are presented here. The electrocatalytic oxidation of NH3OH+, NO2- S2O32- and N2H4 at electrodes modified with cobalt(II) hexacyanoferrate films in 0.1 M and 1.0 M NaNO3 electrolytes are reported and compared with behaviours observed at electrodes modified with indium(III) hexacyanoferrate and iron(III) hexacyanoferrate films. (C) 1998 Elsevier Science Ltd. All rights reserved.
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页码:3359 / 3369
页数:11
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