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Induction of titanium reduction using pyrrole and polypyrrole in the ionic liquid ethyl-methyl-imidazolium bis(trifluoromethanesulphonyl)amide
Faculty of Science - Papers (Archive)
  • Jie Ding, University of Wollongong
  • Jian Wu, University of Wollongong
  • Douglas MacFarlane, Monash University
  • William E Price, University of Wollongong
  • Gordon G. Wallace, University of Wollongong
RIS ID
22637
Publication Date
1-1-2008
Publication Details

Ding, J., Wu, J., MacFarlane, D., Price, W. E. and Wallace, G. G. (2008). Induction of titanium reduction using pyrrole and polypyrrole in the ionic liquid ethyl-methyl-imidazolium bis(trifluoromethanesulphonyl)amide. Electrochemistry Communications, 10 217-221.

Abstract

The electrowinning of titanium currently involves high temperature processing and quite extreme condition. As part of a project investigatingthe use of ionic liquids to refine titanium, we have investigated the use of a polymeric nucleating agent to assist the electro-depositionof the metal. Initial attempts focussed on polypyrrole coatings on the working electrode. These were unsuccessful due to the lowconductivity of the conducting polymer in the IL at the reductive potentials required to deposit the titanium. However, it was found thatpyrrole was a very successful additive able to induce deposition of titanium species from a TiCl4 containing ionic liquid electrolyte([emim][Ntf2]). Well characterised titanium containing polypyrrole co-deposits have been achieved, when pyrrole was introduced, howeverbulk metallic titanium was not observed. The presence of titanium species in these deposits was confirmed by XPS. It is thought thatthe growing pyrrole oligomers form nucleation sites either in situ at the electrodeliquid interface or as a thin film on the electrode allowingco-precipitation of reduced Ti species from solution.

Grant Number
ARC/FF0669110
Citation Information
Jie Ding, Jian Wu, Douglas MacFarlane, William E Price, et al.. "Induction of titanium reduction using pyrrole and polypyrrole in the ionic liquid ethyl-methyl-imidazolium bis(trifluoromethanesulphonyl)amide" (2008) p. 217 - 221
Available at: http://works.bepress.com/w_price/57/