ANA-MARIA JULIETA POPESCU, VIRGIL CONSTANTIN, MIRCEA OLTEANU, OLGA DEMIDENKO, KAZIMIR Yanushkevich<br>Obtaining and Structural Characterization of the Electrodeposited Metallic<br>Copper from Ionic Liquids

ANA-MARIA JULIETA POPESCU, VIRGIL CONSTANTIN, MIRCEA OLTEANU, OLGA DEMIDENKO, KAZIMIR Yanushkevich
Obtaining and Structural Characterization of the Electrodeposited Metallic
Copper from Ionic Liquids

Abstract:

The present study deals with electrodeposition of copper from four different choline chlorides (ChCl) based ionic liquids (IL) as environmentally friendly electrolytes. Firstly, we prepared the ChCl-A (1:2 and 1:1) M based ionic liquids (A=Urea, Malonic acid, Oxalic acid, Ethylene glycol) and then measured the density, viscosity and conductivity of these mixtures. These ionic liquids have the great advantage of air and moisture stability in time. The solubility of CuCl2(anh) and electrodeposition of Cu in these mixtures were performed. The working parameters along with the time and appearance of the obtained copper deposits were followed during the electrolysis process. Finally, the best deposits were studied by micrographic techniques. By X-ray method in CuKa-radiation at room temperature is studied the crystal structure features of the cooper deposited on substrate from industrial steel using the method described in works. The thickness of the coating is determined. The unit crystalline cell values of thin cooper layers on steel are determined. The influence of the elecrodeposition conditions on crystalline ordering is also studied. Of the four electrolytes studied it was found that better deposits (fine, homogenous and adherent) were obtained in ChCl-Oxalic acid and ChCl-Ethylen glycol. Keywords: copper electrodeposition, XRD, ionic liquids, choline chlorine

Issue: 2011, Volume 62, Issue 6

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