期刊
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 574, 期 2, 页码 359-366出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2004.07.038
关键词
dawson heteropolyanion; [Fe(bpy)(3)](2+); multilayer assemblies; electrocatalysis
Successive adsorption onto a glassy carbon electrode of the Dawson heteropolyanion, [P2W18O62](6-), and the multiply charged cation [Fe(bpy)(3)](2+), resulted in the formation of stable multilayer assemblies on the electrode surface. Surface coverages were found to be typical of monolayer coverages for multilayer systems. Cyclic voltammetric studies of the assembly in aqueous 0.5 M NaHSO4, gave a range of redox couples associated with the Fe3+/2+ redox system, of the cationic [Fe(bpy)(3)](2+) moiety and the tungsten-oxo framework of the Dawson parent heteropolyanion, [P2W18O62](6-). It was possible to immobilise up to thirty monolayers, with the system exhibiting well-behaved redox behaviour. The stability of the assembly towards redox switching was investigated, with it being found to be extremely stable once the outer layer is anionic in nature. The immobilised film was also tested for electrocatalytic activity for the reduction of nitrite, hydrogen peroxide and bromate, and was shown to be an efficient electrocatalyst. (C) 2004 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据