Electrodeposition of iron in sulphate solutions

被引：47

作者：

Diaz, S. L. ^{[1
]}

Calderon, J. A. ^{[3
]}

Barcia, O. E. ^{[1
,2
]}

Mattos, O. R. ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, EE PEMM COPPE, Lab Ensaios Nao Destrut & Corrosao Prof Manoel de, BR-21945970 Rio De Janeiro, Brazil

[2] IQ UFRJ, Dep Fisicoquim, Rio De Janeiro, Brazil

[3] Univ Antiquia, Grp Corros & Protecc, Medellin, Colombia

来源：

ELECTROCHIMICA ACTA | 2008年 / 53卷 / 25期

关键词：

Fe electrodeposition; adsorbed intermediates; impedance; pH effects; mechanism;

D O I：

10.1016/j.electacta.2008.01.015

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The kinetics of iron electrodeposition from acid sulphate solutions onto a platinum electrode was investigated by means of stationary polarisation curves and electrochemical impedance spectroscopy. Together with interfacial pH data previously obtained. the effect of pH was analysed. The formation of at least three adsorbed intermediates at the cathode surface was evidenced in all pH values. The relative rate of their formation and its Surface concentration depend on the solution pH as well as on the electrode potential. It is suggested that two of these species catalyses the H+ reduction whereas the other one may have a blocking effect oil this reaction. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：7426 / 7435

页数：10

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