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The mechanism of dioxygen reduction at iron meso-tetrakis (pyridyl) porphyrin: a spectroelectrochemical study

✍ Scribed by S. Popovici; W. Leyffer; R. Holze

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 177 KB
Volume: 02
Category: Article
ISSN: 1088-4246
DOI: 10.1002/(sici)1099-1409(199805/06)2:3<249::aid-jpp77>3.0.co;2-3

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✦ Synopsis

The mechanism of the dioxygen interaction with and reduction reaction at iron α,β,γ,δ-tetra(4-pyridyl) porphyrin ( FeTPyP ) deposited on carbon and silver supporting electrodes was investigated with cyclic voltammetry and FTIR, UV-vis and resonance Raman spectroscopies. Results indicate a strong influence of the ligand upon the reduction electrocatalysis. Spectroelectrochemical results support a two-electron pathway resulting most probably in hydrogen peroxide as the primary reduction product.

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