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Open AccessArticle

The Anodic Behaviour of Bulk Copper in Ethaline and 1-Butyl-3-Methylimidazolium Chloride

1
Department of Chemistry, College of Science, University of Sulaimani, Qlyasan Street, Sulaimani 46001, Kurdistan Regional Government-Iraq
2
Department of Chemistry, University of Leicester, Leicester LE1 7RH, UK
3
Prof. Hameeds Advanced Polymeric Materials Research Lab., Department of Physics, College of Science, University of Sulaimani, Qlyasan Street, Sulaimani 46001, Kurdistan Regional Government-Iraq
4
Komar Research Center (KRC), Komar University of Science and Technology, Sulaimani 46001, Kurdistan Regional Government-Iraq
5
Faculty of Engineering, International Islamic University of Malaysia, Kuala Lumpur, Gombak 53100, Malaysia
6
Centre for Foundation Studies in Science, University of Malaya, Kuala Lumpur 50603, Malaysia
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(20), 4401; https://doi.org/10.3390/app9204401
Received: 23 August 2019 / Revised: 1 October 2019 / Accepted: 11 October 2019 / Published: 17 October 2019
(This article belongs to the Special Issue Applications of Deep Eutectic Solvents in Life Science Engineering)
The anodic dissolution of bulk metallic copper was conducted in ionic liquids (ILs)—a deep eutectic solvent (DES) ((CH3)3NC2H4OH) comprised of a 1:2 molar ratio mixture of choline chloride Cl (ChCl), and ethylene glycol (EG)—and imidazolium-based ILs, such as C4mimCl, using electrochemical techniques, such as cyclic voltammetry, anodic linear sweep voltammetry, and chronopotentiometry.To investigate the electrochemical dissolution mechanism, electrochemical impedance spectroscopy (EIS) was used. In addition to spectroscopic techniques, for instance, UV-visible spectroscopy, microscopic techniques, such as atomic force microscopy (AFM), were used. The significant industrial importance of metallic copper has motivated several research groups to deal with such an invaluable metal. It was confirmed that the speciation of dissolved copper from the bulk phase at the interface region is [CuCl3] and [CuCl4]2− in such chloride-rich media, and the EG determine the structure of the interfacial region in the electrochemical dissolution process. A super-saturated solution was produced at the electrode/solution interface and CuCl2 was deposited on the metal surface. View Full-Text
Keywords: copper electrodissolution; (choline chloride-based IL) ethaline eutectic solvent; butyl-3-methylimidazolium chloride ionic liquid; linear sweep voltammetry; electrochemical impedance spectroscopy; electropolishing copper electrodissolution; (choline chloride-based IL) ethaline eutectic solvent; butyl-3-methylimidazolium chloride ionic liquid; linear sweep voltammetry; electrochemical impedance spectroscopy; electropolishing
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Karim, W.O.; Aziz, S.B.; Brza, M.A.; Abdullah, R.M.; Kadir, M.F.Z. The Anodic Behaviour of Bulk Copper in Ethaline and 1-Butyl-3-Methylimidazolium Chloride. Appl. Sci. 2019, 9, 4401.

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