Sonoelectrochemistry at platinum and boron-doped diamond electrodes: Achieving 'fast mass transport' for 'slow diffusers'

Katherine B. Holt, Javier Del Campo, John S. Foord, Richard G. Compton, Frank Marken

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

It is demonstrated for electrochemical processes in aqueous solution enhanced by ultrasound from a glass-horn transducer (24 kHz, 8 W cm-2) that the mass transport limited current is essentially independent of the diffusion coefficient. An explanation is proposed for this phenomenon, which allows, at low ultrasound power, considerable enhancements of the mass transport of 'slow diffusers' with small D, to be achieved via interfacial cavitation. An application of this effect in the anodic destruction of an aqueous Procion Blue dye solution at boron-doped diamond electrodes is discussed.

Original languageEnglish
Pages (from-to)94-99
Number of pages6
JournalJournal of Electroanalytical Chemistry
Volume513
Issue number2
DOIs
Publication statusPublished - 2 Nov 2001

Keywords

  • Boron-doped diamond
  • Cavitation
  • Diffusion
  • Sonoelectrochemistry
  • Ultrasound
  • Waste water

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

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