In Situ UV-Visible Spectroscopic Imaging of Laminar Flow in a Channel-Type Electrochemical Cell

Zhenghao Wang, Daniel Alberto Scherson

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Transmission ultraviolet-visible spectroscopy was employed to image concentration profiles of ferricyanide, generated in a channel-type cell by the oxidation of ferrocyanide on a gold electrode, by monitoring the absorbance as functions of distances either parallel to the flow or transverse to the flow. Steady-state measurements performed under diffusion-lim-ited conditions yielded excellent agreement with an earlier model of convection and diffusion, in the absence of any adjustable parameters. Transient measurements following the application of a current pulse showed that it was possible to detect substantially all of the produced ferricyanide, in agreement with Faraday's law. With further development, spectroscopic methods should be useful for on-line chemical analysis under forced convection.

Original languageEnglish
Pages (from-to)4225-4229
Number of pages5
JournalJournal of the Electrochemical Society
Volume142
Issue number12
DOIs
Publication statusPublished - 1995 Jan 1
Externally publishedYes

Fingerprint

Electrochemical cells
electrochemical cells
laminar flow
Laminar flow
Imaging techniques
forced convection
Ultraviolet visible spectroscopy
Forced convection
chemical analysis
Gold
convection
gold
Oxidation
oxidation
Electrodes
electrodes
Monitoring
profiles
pulses
cells

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Materials Chemistry
  • Electrochemistry

Cite this

In Situ UV-Visible Spectroscopic Imaging of Laminar Flow in a Channel-Type Electrochemical Cell. / Wang, Zhenghao; Scherson, Daniel Alberto.

In: Journal of the Electrochemical Society, Vol. 142, No. 12, 01.01.1995, p. 4225-4229.

Research output: Contribution to journalArticle

Wang, Zhenghao ; Scherson, Daniel Alberto. / In Situ UV-Visible Spectroscopic Imaging of Laminar Flow in a Channel-Type Electrochemical Cell. In: Journal of the Electrochemical Society. 1995 ; Vol. 142, No. 12. pp. 4225-4229.
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