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The electrochemical oxidation of glucose on platinum—I. The oxidation in 1 M H2SO4

✍ Scribed by E. Skou

Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
506 KB
Volume
22
Category
Article
ISSN
0013-4686

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✦ Synopsis

The electrochemical oxidation of glucose on smooth platinum in 1M H,SO, has been studied by Linear potential sweeps.

In the potential range from l.CN.5 V 0s rhe (a hydrogen electrode in the same solution), where the platinum is oxide covered, the anodic current-potential curves has been explained by the following oxidation mechanism.

After adsorption and chemical rearrangement glucose is oxidized in a two electron process to gluconic acid :

The model is also shown to work in neutral solutions. A quantitative model has been made and some of the parameters determined in 1 M HzSO, are K = 28 l.mole-'; nFk+ = 0.51 Amp. mm2 k. = k". exp(c/b), b = 0.035 V

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