Silver nanostructured catalyst for modification of dielectrics surface

被引：37

作者：

Vaskelis, A ^{[1
]}

Jagminiene, A ^{[1
]}

Tamasauskaite-Tamasiunaite, L ^{[1
]}

Juskenas, R ^{[1
]}

机构：

[1] Inst Chem, LT-01108 Vilnius, Lithuania

来源：

ELECTROCHIMICA ACTA | 2005年 / 50卷 / 23期

关键词：

nanoparticles; Ag; tin(II); surface activation; glassy carbon; formaldehyde anodic oxidation;

D O I：

10.1016/j.electacta.2004.10.093

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The preparation of nano-size Ag particles and their application for forming nanostructured catalysts on various surfaces are described. Silver colloid solutions were prepared by reduction of Ag(I) salt by tin(II) and characterized by electron microscopy, X-ray diffraction and light absorption spectra. Depending on the colloid preparation conditions metal particles of 5-100 nm size were obtained. According to XRD data, the colloid particles contain Ag and SnO2 phases and no metallic Sn. The Ag nanoparticles were found to be efficient electrocatalysts for anodic oxidation of formaldehyde in alkaline solutions. The catalytic activity of a glassy carbon electrode with Ag surface coverage of 0.3-1 mu g cm(-2) is similar or even exceeds that of the metallic electrode. The silver particles were used for the initiation of the electroless copper deposition process on dielectrics; for that 1-2 mu g cm(-2) Ag is needed. (C) 2005 Elsevier Ltd. All rights reserved.

引用

页码：4586 / 4591

页数：6

共 15 条

[1] Application of time-resolved EQCM to the study of the mechanism of silver(I) oxide formation on a polycrystalline silver electrode in alkaline solution [J].