✦ LIBER ✦

Voltammetric behaviour of diacetyl on glassy carbon electrode in dimethyl formamide

✍ Scribed by S. Thangavelu; M. Noel; K.S. Udupa

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 518 KB
Volume: 31
Category: Article
ISSN: 0013-4686
DOI: 10.1016/0013-4686(86)87075-x

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✦ Synopsis

Diacetyl shows two reduction waves in DMF medium containing TMAP on glassy carbon electrode (gee). In addition to the influence of sweep rate and concentration on the voltammetric behaviour, the effects of addition of proton donors, n-butyl bromide and lithium nitrate were also investigated to arrive at the mechanism of the reduction process. All experimental evidence indicates the formation of a dimer by an EC process in the potential region of the first wave. The second cathodic wave corresponds to the reduction of the product of the first wave. The exact nature of the electrode process at this potential could not be clearly established. However some interesting time effects were noticed and are discussed qualitadvely. Comparison of the present work on glassy carbon electrodes with the earlier reports on Hg electrodes reveals some interesting influences of the electrode material on the overall electrode process. These aspects are discussed in some detail.

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