Noel, M. and Chidambaram, S. (1987) Voltammetric investlgations of iodide catalysed reduction of iodate and periodate ions on glassy carbon electrodes in 0.5m HClO4 medium. Bulletin of Electrochemistry , 3 (6). pp. 665-669. ISSN 0256-1654

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fr d.SM VrC!04 medium, KI exhibits two oxidation voltammetric peaks around 0.50V and 1.00V vs SCE on glassy cabon (GC) electrodes. The first wave corresponding to I-/ H l2 couple is highly reversible. The second wave corresponding to HI2/10- couple shows quasireversible behaviour. K103 shows an irreversible diffusion controlled wave on GC electrode around 0.16V in the first cathodic sweep. In the subsequent sweeps the reduction process commences at about 0.30V itself. The fact that this is due to the I- catalysis of 103- reduction is confirmed by studying the effect of KI addition on this process. Such type of I- catalysis is even more pmnounced in the case of 104- reduction. In this case the catalytic shift is as much ss O.4N. Possible causes for such I- catalysis is also discussed.

Item Type: Article
Uncontrolled Keywords: Voltammetry; glassy carbon electrode; iodate; periodate
Subjects: Electroorganic
Depositing User: ttbdar CECRI
Date Deposited: 23 Mar 2012 13:51
Last Modified: 23 Mar 2012 13:51

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