ELECTROCHEMICAL AND ELECTROCATALYTIC PROPERTIES OF IRON(III)-SUBSTITUTED DAWSON-TYPE TUNGSTOPHOSPHATE ANION

被引：98

作者：

DONG, SJ

LIU, MJ

机构：

[1] Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Academica Sinica, Changchun

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1994年 / 372卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/0022-0728(94)03288-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The electrochemical and electrocatalytic properties of iron(III)-substituted Dawson-type tungstophosphate anion are described. The anion exhibits a one-electron couple associated with the Fe(III) center and two two-electron waves attributed to redox processes of the tungsten-oxo framework. All three waves are pH dependent. The anion has a catalytic effect on the reduction of H2O2 and NO2-. The rate constant of the reaction of [P2W17O61(Fe(II) - OH2)]8- with H2O2 was measured using an ultramicroelectrode and was found to be 1.16 x 10(4) M-1 s-1, which is one order of magnitude higher than the reported value for the reaction of H2O2 with iron-substituted Keggin-type heteropoly anion.

引用

页码：95 / 100

页数：6

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