BSU bulletin. Chemistry. Physics
Bibliographic description:
, , CYCLIC VOLTAMMETRIC STUDY OF COPPER IN ALKALINE SOLUTION // BSU bulletin. Chemistry. Physics. - 2017. №4. . - С. 59-65.
Title:
CYCLIC VOLTAMMETRIC STUDY OF COPPER IN ALKALINE SOLUTION
Financing:
Codes:
Annotation:
The electrochemical reactions of a copper electrode in Na2S solutions were studied using cyclic voltammetry. Purification of working electrodes is determined by X-ray fluorescence. Also a surface examination and morphological studies were applied using scanning electron microscopy and X-ray diffractometer. There are three anodic peaks and, the cathodic branch also contains three peaks. These peaks correspond to the reduction of copper oxide and copper sulfide formed on the anode branch. These peaks may be corresponding successively to the formation of Cu2S, CuS, Cu2O respectively. On the other hand are compounds formed by oxidation of the sulfide of metals using ethylenediaminetetraacetic acid.
Keywords:
copper, sodium sulfide, oxidation, ethylenediaminetetraacetic acid, cyclic voltammetry, copper oxide, copper sulfide
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Deng J., Feng Q., Leming Ou, Zhang C., Lu Y., and Liu K. Electrochemistry of Pentlandite in the Absence and presence of Sodium sulfide // Chaing Mai J. Sci. 2012. V. 39 (2). P. 336–345.
Glemgotskii V. A., Klassen V. I. Flotation beneficiation methods. M.: Nedra, 1981. 148 p.
Ekmeci Z., Aslan A. Effect of EDTA on selective flotation of sulphide minerals // Physicochemical Problems of Mineral Processing. 2004. V. 38. P. 79–94.
He S. Depression of pyrite in the flotation of copper ores: Doctoral diss. South Australia, 2006. 123 p.
Bard A. J., Faulkne L. R. Electrochemical methods: Fundamentals and Applications, USA, 1989. P.1–6, 86–116, 566–570.
Zaafarany I., Boller H. Corrosion of copper electrode in sodium sulfide solution // Journal of Saudi Chemical Society. 2010. V. 14. P. 183–189.
Selly N. J. Experimental Approach to Electrochemistry. London, 1997. P. 87–201.
Bockris J. O. M., Reddy A. K. N. Modern Electrochemistry. 1973. V. 1, 2, 8–11. P. 880–882, 1030–1032
Brookins D. G. Eh-pH Diagrams for Geochemistry. London, 1988. P. 68–81.
Burkin R. A. Chemical hydrometallurgy: Theory and Principles. Imperial, 2001. P. 12–15, 65–105.
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