Effects of ultrasound and temperature on copper electro reduction in Deep Eutectic Solvents (DES)

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TitreEffects of ultrasound and temperature on copper electro reduction in Deep Eutectic Solvents (DES)
Type de publicationJournal Article
Year of Publication2014
AuteursMandroyan A, Mourad-Mahmoud M, Doche M-L, Hihn J-Y
JournalULTRASONICS SONOCHEMISTRY
Volume21
Pagination2010-2019
Date PublishedNOV
Type of ArticleArticle
ISSN1350-4177
Mots-clésCopper electrodeposition, Deep Eutectic Solvent, Electrochemistry, Power ultrasound
Résumé

{This paper concerns a preliminary study for a new copper recovery process from ionic solvent. The aim of this work is to study the reduction of copper in Deep Eutectic Solvent (choline chloride-ethylene glycol) and to compare the influence of temperature and the ultrasound effects on kinetic parameters. Solutions were prepared by dissolution of chloride copper salt CuCl2 (to obtain Copper in oxidation degree II) or Cud( (to obtain Copper in oxidation degree I) and by leaching metallic copper directly in DES. The spectrophotometry UV-visible analysis of the leached solution showed that the copper soluble form obtained is at oxidation degree I (Copper I). Both cyclic voltammetry and linear voltammetry were performed in the three solutions at three temperatures (25, 50 and 80 degrees C) and under ultrasonic conditions (F = 20 kHz

DOI10.1016/j.ultsonch.2014.02.019