Structural and electrochemical characterization of a cobalt phthalocyanine bulk-modified SiO2/SnO2 carbon ceramic electrode

被引：17

作者：

Arguello, Jacqueline ^{[1
]}

Magosso, Herica A. ^{[1
]}

Ramos, Rodrigo R. ^{[1
]}

Canevari, Thiago C. ^{[1
]}

Landers, Richard ^{[2
]}

Pimentel, Vinicius L. ^{[3
]}

Gushikem, Yoshitaka ^{[1
]}

机构：

[1] Univ Estadual Campinas, Inst Quim, Campinas, SP, Brazil

[2] Univ Estadual Campinas, Inst Fis Gleb Wataghin, Campinas, SP, Brazil

[3] Brazilian Synchrotron Light Lab LNLS, Campinas, SP, Brazil

来源：

ELECTROCHIMICA ACTA | 2009年 / 54卷 / 07期

基金：

巴西圣保罗研究基金会;

关键词：

Cobalt phthalocyanine; Electrocatalytic oxidation; Oxalic acid; Bulk-modified carbon ceramic composite; PYROLYTIC-GRAPHITE ELECTRODE; SOL-GEL; ELECTROCATALYTIC OXIDATION; COPPER HEXACYANOFERRATE; COMPOSITE ELECTRODES; OXALIC-ACID; SURFACE; FILMS; OXIDE;

D O I：

10.1016/j.electacta.2008.06.023

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A cobalt phthalocyanine bulk-modified carbon ceramic composite has been prepared by using sol-gel processing, and characterized by BET surface area, X-ray photoelectron spectroscopy, scanning electron microscopy and atomic force microscopy. A water-soluble 3-n-propylpyridinium chloride silsesquioxane (SiPyCl), an ion exchanger polymer, was employed to attach cobalt(II) tetrasulfophthalocyanine (CoTsPc) and prevent its leakage, as well as, to ensure adequate dispersion in the sol-gel network. The modified electrode built in a rigid disk-format displayed good electrocatalytic behavior towards the oxidation of oxalic acid at 0.84V ( SCE), as evidenced by the enhancement of the anodic current peak intensity when the concentration of oxalic acid was increased. A linear response was found in the range of 1.6 x 10(-5) to 1.5 x 10(-3) mol l(-1) with a detection limit of 7.1 x 10(-6) mol l(-1). (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1948 / 1953

页数：6

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