Electrochemical Properties of a Conducting Film Derived from Iron(II) Tris(diaminopolypyridyl) Complex in the S(IV) Oxoanions Reduction
✍ Scribed by Camilo García; Cristian Domínguez; Alvaro Aliaga; Betty Matsuhiro; Leonora Mendoza; María J. Aguirre; Mauricio Isaacs
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 366 KB
- Volume
- 23
- Category
- Article
- ISSN
- 1040-0397
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✦ Synopsis
Abstract
A new conducting film derived from the complex [Fe (diaphen)~3~]^2+^, (diaphen=5,6‐diamino‐1,10‐phenanthroline) was electropolymerized by cyclic voltammetry onto a glassy carbon electrode. Poly‐[Fe^II^ (diaphen)~3~] was studied by cyclic voltammetry, SEM, UV‐vis and micro‐Raman spectroscopy. Poly‐[Fe^II^ (diaphen)~3~] shows electrocatalytic activity in HSO~3~^−^ reduction in an ethanol/water solution. Electrocatalysis is centered at the π ring of phenanthroline. Rotating disk electrode studies showed a 0.117 V/dec Tafel slope, suggesting an EC process where the electrochemical process is the determining step. The chemical step was studied by UV‐vis spectroelectrochemistry. Amperometric behavior showed a linear range between 47.5 µM to 417 µM and the LOD was 19.5 µM.