Buffered chlorogallate (III) ionic liquids and electrodeposition of gallium films

Kenneth Seddon, Geetha Srinivasan, Malgorzata Swadzba-Kwasny, Anthony R. Wilson

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Buffering of Lewis acidic chlorometallate ionic liquids is a useful tool to modify their properties for electrochemical and catalytic applications. Lewis acidic chlorogallate(iii) ionic liquids containing the 1-octyl-3-methylimidazolium cation, buffered with sodium chloride, were studied using (71)Ga NMR spectroscopy and cyclic voltammetry. All the studied Lewis acidic compositions (0.50 < χGaCl3 ≤ 0.75) could be buffered to mild or moderate acidity, but not to neutrality. Electrodeposition of gallium from such buffered systems was possible, yielding deposits of improved morphology over the unbuffered ionic liquids, due to the constant melt composition maintained by the buffer. These findings were in a stark contrast with older studies on chloroaluminate(iii) ionic liquids buffered with sodium chloride.
Original languageEnglish
Pages (from-to)4518-4526
Number of pages9
JournalPhysical Chemistry Chemical Physics
Volume15
Issue number13
Early online date18 Feb 2013
DOIs
Publication statusPublished - 2013

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

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