DNA-templated preparation of palladium nanoparticles and their application

被引：40

作者：

Fang, C. ^{[1
]}

Fan, Y. ^{[1
]}

Kong, J. M. ^{[1
]}

Zhang, G. J. ^{[1
]}

Linn, L. ^{[1
]}

Rafeah, S. ^{[1
]}

机构：

[1] Inst Microelect, Singapore 117685, Singapore

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2007年 / 126卷 / 02期

关键词：

nanoparticle; palladium; DNA template; catalytic activity; indium tin oxide;

D O I：

10.1016/j.snb.2007.04.031

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A versatile method, based on the metallization of DNA strands, is developed to prepare palladium nanoparticles on indium tin oxide (ITO) coated glass surface. Resulted palladium nanoparticles are distributed along the DNA strands and their size is controllable in the range of 10- 100 nm. This is contrast to the branched palladium aggregates formed on bare ITO surface. When used as an electrochemical sensor, the nanoparticles 41 show strong catalytic activity for the reduction of hydrogen peroxide and the oxidation of ascorbic acid, respectively. Higher catalytic activity is observed with the nanoparticles formed on double-stranded DNA (dsDNA) templates than those on single-stranded DNA (ssDNA) templates. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：684 / 690

页数：7

共 30 条

[1] Oxidation kinetics of guanine in DNA molecules adsorbed onto indium tin oxide electrodes [J].