Preparation of binary metal electrocatalysts by self-assembly of precursor ionic species on gold and reduction of nitrate ions

被引：43

作者：

Shimazu, K ^{[1
]}

Kawaguchi, T ^{[1
]}

Tada, K ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Environm Earth Sci, Dept Mat Sci, Sapporo, Hokkaido 0600810, Japan

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2002年 / 529卷 / 01期

关键词：

platinum/tin electrocatalyst; quartz crystal microbalance; nitrate reduction;

D O I：

10.1016/S0022-0728(02)00913-0

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Pt/Sn binary metal electrodes were prepared by the successive adsorption of Sn2+ and PtCl62- ions onto a gold substrate followed 6 by the reduction of the adsorbed PtCl62-. The atomic ratios of Sn and Pt to the surface Au were determined to be approximately 1 and 0.3, respectively, using a quartz crystal microbalance (QCM), X-ray photoelectron spectroscopy (XPS) and cyclic voltammetry. Therefore, binary metal layers at a monolayer level were formed. These Pt/Sn binary metal electrodes exhibited a very high electrocatalytic activity for the reduction of nitrate ions with the predominant formation of ammonium ions. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：20 / 27

页数：8

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