Electrochemical properties of peroxotitanium-containing phosphotungstate with Dawson-Wells structure

被引：6

作者：

Gong, J ^{[1
]}

Shan, QJ ^{[1
]}

Wang, DR ^{[1
]}

Hua, RN ^{[1
]}

Qu, LY ^{[1
]}

机构：

[1] NE Normal Univ, Dept Chem, Changchun 130024, Peoples R China

来源：

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

基金：

中国国家自然科学基金;

关键词：

redox properties; titanium and peroxotitanium; Dawson structure;

D O I：

10.1016/S0022-0728(98)00083-7

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The electrochemical behavior of titanium-containing and peroxotitanium-containing phosphotungstates with Dawson-Wells structure, i.e. MaHbP2W18-nTinO62, MaHbP2W18-n(TiO2)(n)O62-n (n = 1, a + b = 8; n = 3, a + b = 12, M = K+, Et4N+ or Bu4N+), were studied systematically. A reduction wave of O-2(2-) in the peroxo polyanion at - 0.1 V and a reduction wave of Ti4+ at - 0.2 V were observed. The oxidation potential of the peroxotitanium-containing phosphotungstate is higher than that of the titanium-containing phosphotungstate. The peroxide group and substituted Ti atoms have a large effect on the redox behavior of the heteropoly anions. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：39 / 44

页数：6

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