Electrochemical behaviour and detection of Co(II) in molten glass by cyclic and square wave voltammetry

In this paper the voltammetric behaviour at a platinum disc electrode of Co 3O 4, dissolved in a glass melt is studied by cyclic and square wave voltammetry. It was found that Co(II) is the main form of cobalt in the melt. A well defined reduction wave can be observed with Co(I) as reaction product....

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Bibliographic Details
Published in:Electrochemistry communications 2002, Vol.4 (1), p.41-46
Main Authors: De Strycker, J, Westbroek, P, Temmerman, E
Format: Article
Language:English
Subjects:
Analytical chemistry
Applied sciences
Building materials. Ceramics. Glasses
Chemical industry and chemicals
Chemistry
Cobalt
Detection
Electrochemical methods
Electrochemistry
Exact sciences and technology
Glasses
Molten glass
Platinum
Reversibility
Structure, analysis, properties
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Summary:In this paper the voltammetric behaviour at a platinum disc electrode of Co 3O 4, dissolved in a glass melt is studied by cyclic and square wave voltammetry. It was found that Co(II) is the main form of cobalt in the melt. A well defined reduction wave can be observed with Co(I) as reaction product. The Co(II)/Co(I) redox couple with a half wave potential of −0.65 V vs. yttria stabilised ZrO 2/air behaves reversibly. Square wave voltammetry was shown being a suitable method for the analytical determination of the Co(II) concentration in the melt with a sensitivity of 1.2±0.1 mA mass % −1 and a detection limit of 0.075±0.010 mass% Co 3 O 4 .
ISSN:1388-2481
1873-1902
DOI:10.1016/S1388-2481(01)00273-9