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Type: Artigo de periódico
Title: Iron(II) tetrasulphophthalocyanine complex adsorbed on a silica gel surface chemically modified by 3-n-propylpyridinium chloride
Author: Ribeiro, ES
Gushikem, Y
Abstract: Iron (II) tetrasulphophthalocyanine complex was adsorbed on a 3-n-propylpyridinium chloride functionalized silica gel surface by means an ion exchange reaction. The amount of the complex bonded to the substrate surface, by electrostatic interaction, is 25 mu mol g(-1) and the specific surface area S-BET = 320 m(2) g(-1). A carbon paste electrode made with the material call electrocatalytically reduce dissolved oxygen to water at a potential Ep(c) = - 140 mV in 0.5 M KCl solution. The plot of the cathodic current against dissolved oxygen concentrations between 0.65 and 14.4 mg dm(-3) showed a linear correlation at 298 K and pH 5. The electrode presented a reproducible response and chemically it was stable under various oxidation-reduction cycles. (C) 1999 Elsevier Science Ltd. All rights reserved.
Subject: iron(II) tetrasulphophthalocyanine
3-n-propylpyridinium chloride
silica gel
oxygen electrocatalytic reduction
cyclic voltammetry
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Rights: fechado
Identifier DOI: 10.1016/S0013-4686(99)00114-0
Date Issue: 1999
Appears in Collections:Unicamp - Artigos e Outros Documentos

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