A UV-visible study of the electropolymerization of CoTAPP at vitreous carbon and investigation of its catalytic activity towards the electroreduction of dioxygen

被引：12

作者：

El Mouahid, O ^{[1
]}

Rakotondrainibe, A ^{[1
]}

Crouigneau, P ^{[1
]}

Leger, JM ^{[1
]}

Lamy, C ^{[1
]}

机构：

[1] Univ Poitiers, Lab Chim 1, UMR 6503, F-86022 Poitiers, France

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1998年 / 455卷 / 1-2期

关键词：

poly-cobalt tetra(o-aminophenyl)porphyrin; dioxygen electroreduction; UV-visible reflectance spectroscopy;

D O I：

10.1016/S0022-0728(98)00266-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Cobalt tetra(o-aminophenyl)porphyrin (CoTAPP) was electropolymerized from an acetonitrile solution containing 0.1 M (CoTAPP), at a vitreous carbon electrode, leading to a polymer film, poly(CoTAPP). UV-visible differential reflectance spectra (UVDRS) were recorded respectively. during the electropolymerization process and during the oxygen reduction reaction (orr) at a poly(CoTAPP) electrode. Comparison between the UV-visible spectra of the poly(CoTAPP) electrode, recorded under N-2 and under O-2 in a 0.5 M H2SO4 solution, shows dearly the band associated with the charge-transfer process between the central metal ion and the complex ligand. The initial reduced state corresponding to the active state for the oxygen reduction reaction was confirmed to be Co(II) species. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：209 / 222

页数：14

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