Channel Flow Cell For UV/Visible Spectroelectrochemistry

Zhenghao Wang, Ming Zhao, Daniel Alberto Scherson

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23 Citations (Scopus)

Abstract

A channel-type spectroelectrochemical cell has been designed and constructed for conducting in situ transmission UV/visible spectroscopic measurements of solution phase electrogenerated species. Excellent agreement between theory and experiment was obtained using the oxidation of ferrocyanide in aqueous electrolytes as a probe system. In particular, plots of the (relative) absorbance of the solution at 420 nm (the absorption maximum of ferricyanide in the visible region) measured along the axis normal to the fluid flow downstream from the electrode edge, versus V−1/3, where V is the flow rate, yielded a straight line with a close to zero intercept Furthermore, a linear relationship was also found between the diffusion-limited current and V1/3, as expected on the basis of hydrodynamic and electrochemical considerations.

Original languageEnglish
Pages (from-to)4560-4563
Number of pages4
JournalAnalytical chemistry
Volume66
Issue number24
DOIs
Publication statusPublished - 1994 Dec 15
Externally publishedYes

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ASJC Scopus subject areas

  • Analytical Chemistry

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