Catalytic Electrooxidation of 2-Mercaptoethanol on Perchlorinated Iron Phthalocyanine Adsorbed on a Graphite Electrode

Aguirre, M. J.; Isaacs, M.; armijo, F; Zagal, J.H.; Bocchi, N

Abstract

In this article we show that iron perchlorinated phthalocyanine (FePcCl16), adsorbed on an OPG electrode, acts as a catalyst for the electrooxidation of 2-mercaptoethanol (R-SH), lowering the overpotential of the reaction by near 0.3 V, compared to the unmodified OPG. A Tafel slope close to 0.12 V/decade was observed, indicating that the first electron-transfer is rate determining. Chemical orders of one in R-SH and in OH- are obtained. The linearity of a plot of log I vs. log [RSH] indicates that this system could have potential applications in the amperometric detection of thiols.

Más información

Título de la Revista: ELECTROANALYSIS
Volumen: 10
Número: 8
Editorial: WILEY-V C H VERLAG GMBH
Fecha de publicación: 1998
Página de inicio: 571
Página final: 575
URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-0000877694&partnerID=q2rCbXpz