✦ LIBER ✦

Sonoelectrochemistry: Chlorine, hydrogen and oxygen evolution at platinised platinum

✍ Scribed by D.J. Walton; L.D. Burke; M.M. Murphy

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 473 KB
Volume: 41
Category: Article
ISSN: 0013-4686
DOI: 10.1016/0013-4686(96)00133-8

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✦ Synopsis

Voltammetric studies of hydrogen gas evolution from I M H,SO, and chloride gas evolution from 2SM NaCI/O.l M HCI both at platinised platinum electrodes show that simultaneous ultrasonic irradiation produces enhanced rates of gas evolution largely due to the removal from the electrode surface of adherent product species. Nitrogen-agitation is less efficient at promoting this product removal. In contrast, oxygen gas evolution from the same electrode in I M H,SO, not only fails to be enhanced by ultrasound in these conditions, but the electrode continues to be deactivated by oxidative processes on successive scans despite sonication. Thus sonoelectrochemistry probes mechanistic distinction between these reaction systems.

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