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Electrochemical Response of Cobalt(II) in the Presence of Ammonia
Author(s) -
Ji Xiaobo,
Buzzeo Marisa C.,
Banks Craig E.,
Compton Richard G.
Publication year - 2006
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200503361
Subject(s) - pyrolytic carbon , electrochemistry , cobalt , cyclic voltammetry , aqueous solution , inorganic chemistry , ammonia , highly oriented pyrolytic graphite , graphite , electrode , chemistry , redox , diamond , materials science , organic chemistry , pyrolysis
The electrochemical oxidation of cobalt(II) at gold, boron‐doped diamond, basal and edge plane pyrolytic graphite, and highly oriented pyrolytic graphite electrodes in aqueous solutions containing NH 3 has been studied using cyclic voltammetry, with subsequent chemical and electrochemical processes explained in detail. Furthermore, the electro‐reduction of [Co(NH 3 ) 6 ] 3+ in the presence of different electrolytes has also been studied to obtain a better understanding of the oxidation pathway of the Co(II)‐ammine complexes. In aqueous solution the mechanism can be described by the following scheme: