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

Fu Hwa Yeh, Chia Cheng Tai, Jing Fang Huang, I. Wen Sun

Research output: Contribution to journalArticle

85 Citations (Scopus)

Abstract

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°C without using any other corrosive acids or bases. The effects of the deposited zinc quantity, deposition potential, current, and temperature on 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(II) species consumed during the deposition step was recovered during the dealloying step, the ionic liquid is reusable.

Original languageEnglish
Pages (from-to)5215-5222
Number of pages8
JournalJournal of Physical Chemistry B
Volume110
Issue number11
DOIs
Publication statusPublished - 2006 Mar 23

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Formation of porous silver by electrochemical alloying/dealloying in a water-insensitive zinc chloride-1-ethyl-3-methyl imidazolium chloride ionic liquid'. Together they form a unique fingerprint.

  • Cite this