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

doi:10.1016/S0022-0728(01)00600-3

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 journal › Article › peer-review

36 Citations (SciVal)

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 language	English
Pages (from-to)	94-99
Number of pages	6
Journal	Journal of Electroanalytical Chemistry
Volume	513
Issue number	2
DOIs	https://doi.org/10.1016/S0022-0728(01)00600-3
Publication status	Published - 2 Nov 2001

Funding

F.M. thanks the Royal Society for the award of a University Research Fellowship. The EPSRC is gratefully acknowledged for financial support (Grant GR/N 12015) and J.D.C. thanks the Basque Government for a PhD Studentship.

Keywords

Boron-doped diamond
Cavitation
Diffusion
Sonoelectrochemistry
Ultrasound
Waste water

ASJC Scopus subject areas

Analytical Chemistry
General Chemical Engineering
Electrochemistry

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10.1016/S0022-0728(01)00600-3

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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.",

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AU - Del Campo, Javier

AU - Foord, John S.

AU - Compton, Richard G.

AU - Marken, Frank

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N2 - 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.

AB - 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.

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KW - Cavitation

KW - Diffusion

KW - Sonoelectrochemistry

KW - Ultrasound

KW - Waste water

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

Abstract

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Keywords

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