Preparation and electrocatalytic properties of osmium oxide/hexacyanoruthenate films modified electrodes for catecholamines and sulfur oxoanions

被引：38

作者：

Chen, SM ^{[1
]}

Liao, CJ ^{[1
]}

Vasantha, VS ^{[1
]}

机构：

[1] Natl Taipei Univ Technol, Dept Chem Engn & Biotechnol, Taipei 106, Taiwan

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2006年 / 589卷 / 01期

关键词：

osmium hexacyanoruthenate; film modified electrodes; electrocatalysis; dopamine; epinephrine; sulfur oxoanions;

D O I：

10.1016/j.jelechem.2005.12.029

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Osmium oxide/hexacyanoruthenate films have been prepared using repeated cyclic voltammetry, and their electrocatalytic properties have been investigated. The osmium oxide/hexacyanoruthenate films were deposited directly from mixed Os3+ and Ru(CN)(6)(4-) ions in a pH 2 solution. Electrochemical quartz crystal microbalance (EQCM), cyclic voltammetry, and UV-visible spectroscopy were used to study the growth mechanism of the osmium oxide/hexacyanoruthenate films. The EQCM data indicated that the redox process was confined to the immobilized osmium oxide/hexacyanoruthenate film, which showed a single redox couple with a formal proton-dependent potential at 0.35 V. The electrocatalytic oxidation of dopamine, epinephrine, and norepinephrine and S2O32- and SO52- by the osmium oxide/hexacyanoruthenate films was studied. The electrocatalytic reactions of the osmium oxide/hexacyanoruthenate films were also investigated by the rotating ring-disk electrode method. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：15 / 23

页数：9

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