Rates of metal electrodeposition from aqueous solutions in the presence of chelating agents

被引:11
作者
Juang, RS [1 ]
Lin, LC [1 ]
机构
[1] Yuan Ze Univ, Dept Chem Engn, Chungli 320, Taiwan
关键词
initial rates; electrodeposition; Cu(II); chelating agents; cation-exchange membrane;
D O I
10.1081/SS-100100213
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The rates of Cu deposition from aqueous solutions containing cheating agents, such as citric acid, nitrilotriacetic acid (NTA), and ethylenediaminetetraacetic acid (EDTA), in an electrochemical membrane cell were measured. An equimolar solution of chelating agents and metals was examined. The iridium oxide and Pt coated on titanium electrodes were used as the anode and cathode, respectively. The cation-exchange membrane Neosepta CM-1 was used to separate the cathode and anode chambers. All experiments were carried out as a function of current density (18.5-139 A/m(2)), initial catholyte pH (1-9), and metal concentration (10-80 mol/m(3)). It was shown that the initial rates of Cu electrodeposition decreased in the order citrate > NTA > EDTA, which was not wholly related to the complexing ability of metals and the chelating agents.
引用
收藏
页码:1087 / 1098
页数:12
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