On electrolysis of an aqueous sodium bicarbonate soluti […]
On electrolysis of an aqueous sodium bicarbonate solution, both bicarbonate reduction and hydrogen evolution reactions take place at the cathode leading to the generation of hydroxyl ions. The resulting increase in pH of the solution causes the shift of bicarbonate and carbonate to the generation of a greater amount of carbonate. On the other hand, copper oxidation takes place at the anode. The resulting Cu+2 ions cause the formation and hence the precipitation of Basic Copper Carbonate.
The elemental analysis was performed by ICP and CHN. The analysis confirmed the presence of corresponding elements in stochiometric percentage. The effect of electrolysis voltage on the particle size of the product was investigated. The copper carbonate nanoparticles were prepared by electrolysis of copper electrode in bicarbonate solution at three different voltages (3, 7 and 12 V). It was found that the particle size of the product decreased as the electrolysis voltage was enhanced. On the other hand, SEM images of basic copper carbonate particles were obtained using a gold film for loading the derived particles on the instrument.
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