Formation of porous silver by electrochemical alloying/dealloying in a water-insensitive zinc chloride-1-ethyl-3-methyl imidazolium chloride ionic liquid

被引：86

作者：

Yeh, FH ^{[1
]}

Tai, CC ^{[1
]}

Huang, JF ^{[1
]}

Sun, IW ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Chem, Tainan 70101, Taiwan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2006年 / 110卷 / 11期

关键词：

D O I：

10.1021/jp0552527

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This paper describes the formation of a porous silver Surface by a convenient two-step process involving electrochemical formation of a binary silver-zinc alloy film on a silver surface followed by electrochemical etching, of the zinc from the alloy. Both the deposition and the dealloying steps were performed in a single bath of low-temperature zinc chloride-1-ethyl-3-methylimidazolium chloride ionic liquid at temperatures below 150 degrees C without using any other corrosive acids or bases. The effects of the deposited zinc quantity, deposition potential, current, and temperature oil the structures and morphologies of the porous silver film were examined. In comparison with conventional molecular electrolyte solutions, ionic liquids provide a more versatile environment for fabricating porous metals. Because the zinc(IT) species consumed during the deposition step was recovered during the dealloying step, the ionic liquid is reusable.

引用

页码：5215 / 5222

页数：8

共 38 条

[1] Ionic liquids for the convenient synthesis of functional nanoparticles and other inorganic nanostructures [J].