Electrochemical and Spectroscopic Study of Eu(III) and Eu(II) coordination in the 1-Ethyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)imide Ionic Liquid

Chemistry : a European Journal
David BengioPhilippe Moisy

Abstract

Separation processes based on room temperature ionic liquids (RTIL) and electro-chemical refining are promising strategies for the recovery of lanthanides from primary ores and electronic waste. However, they require the speciation of dissolved elements to be known with accuracy. In the present study, Eu coordination and Eu(III)/Eu(II) electrochemical behavior as a function of water content in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIm][NTf 2 ]) was investigated using UV-visible spectrophotometry, time-resolved laser fluorescence spectroscopy, electrochemistry, and X-ray absorption spectroscopy. In situ measurements were performed in spectro-electrochemical cells. Under anhydrous conditions, Eu(III) and Eu(II) were complexed by NTf 2 , forming Eu-O and Eu-(N,O) bonds with the anion sulfoxide function and N atoms, respectively. This complexation resulted in a greater stability of Eu(II), and in quasi-reversible oxidation-reduction with an E 0 ' potential of 0.18 V vs the ferrocenium/ferrocene (Fc + /Fc) couple. Upon increasing water content, progressive incorporation of water in the Eu(III) coordination sphere occurred. This led to reversible oxidation-reduction reactions, but also to a decrease in stab...Continue Reading

References

Sep 28, 2004·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Marisa C BuzzeoRichard G Compton
Jun 22, 2005·Journal of Synchrotron Radiation·B Ravel, M Newville
Apr 6, 2006·Dalton Transactions : an International Journal of Inorganic Chemistry·Arash Babai, Anja-Verena Mudring
Jul 21, 2006·The Journal of Physical Chemistry. B·C ClavaguéraJ P Dognon
Sep 21, 2006·Physical Chemistry Chemical Physics : PCCP·Andrew P Abbott, Katy J McKenzie
May 24, 2007·Chemical Reviews·Koen Binnemans
Jun 17, 2008·Inorganic Chemistry·Emilie BosséPhilippe Moisy
Jun 21, 2008·Chemical Reviews·Philippe Hapiot, Corinne Lagrost
Jun 19, 2009·Environmental Science & Technology·Xiaoli TanBernd Grambow
Feb 16, 2010·Chemical Reviews·Jean-Claude G Bünzli
Apr 7, 2016·Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials·Colin R GroomSuzanna C Ward
Oct 3, 2017·Inorganic Chemistry·Matthieu AudrasPhilippe Moisy
Sep 25, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Michiel Van de VoordeKoen Binnemans

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