Electrodeposition of gallium onto vitreous carbon
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Abstract
Gallium electrodeposition onto vitreous carbon was studied in chloride solution using potentiostatic and potentiodynamic techniques. The morphology and composition of the deposits were analysed by SEM/EDX. The effects of solution pH, applied potential and the hydrodynamic conditions on the electroreduction process were investigated. Results indicate that the reduction to Ga+1 species takes place at the lower overpotentials, while at high overpotentials gallium deposition occurs through progressive nucleation and growth under diffusion control. The influence of the simultaneous hydrogen evolution reaction on the electrodeposition process is discussed.
Keywords
Gallium Vitreous carbon Electrodeposition Potentiostatic polarisation Potentiodynamic polarisationNotes
Acknowledgements
The Secretaría de Ciencia y Técnica-UNS (PGI 24/M093/04) and the Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET-PIP02143/00) are gratefully acknowledged for the financial support.
References
- 1.Moskalyk RR (2003) Miner Eng 16:921CrossRefGoogle Scholar
- 2.Aragon E, Cazenave-Vergez L, Lanza E, Giroud A, Sebaoun A (1997) Brit Corros J 32:263Google Scholar
- 3.Müller S, Holzer F, Desilvestro J, Haas O (1996) J Appl Electrochem 26:1217CrossRefGoogle Scholar
- 4.Flamini DO, Saidman SB, Bessone JB (2006) Corros Sci 48:1413CrossRefGoogle Scholar
- 5.Popova TI, Bagotskaya IA, Moorhead ED (1978) In: Bard AJ (ed) Encyclopedia of electrochemistry of the elements, vol VIII. M Dekker, NY, pp 207–262Google Scholar
- 6.Chen PY, Lin YF, Wen Sun I (1999) J Electrochem Soc 146:3290CrossRefGoogle Scholar
- 7.Belaschk D (1967) Z Phys Chem 234:258Google Scholar
- 8.Breslin CB, Carroll WM (1992) Corros Sci 33:1735CrossRefGoogle Scholar
- 9.Muñoz AG, Saidman SB, Bessone JB (1999) J Electrochem Soc 146:2123CrossRefGoogle Scholar