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Electrochemical Properties of a Conducting Film Derived from Iron(II) Tris(diaminopolypyridyl) Complex in the S(IV) Oxoanions Reduction
Author(s) -
García Camilo,
Domínguez Cristian,
Aliaga Alvaro,
Matsuhiro Betty,
Mendoza Leonora,
Aguirre María J.,
Isaacs Mauricio
Publication year - 2011
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201000769
Subject(s) - cyclic voltammetry , tafel equation , electrocatalyst , amperometry , electrochemistry , glassy carbon , chemistry , raman spectroscopy , electrode , inorganic chemistry , voltammetry , phenanthroline , analytical chemistry (journal) , organic chemistry , physics , optics
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.