Direct Electrodeposition of Porous Gold Nanowire Arrays for Biosensing Applications

被引：80
|
作者：
Zhang, Xinyi [1 ]
Li, Dan [1 ]
Bourgeois, Laure [2 ]
Wang, Huanting [1 ]
Webley, Paul A. [1 ]
机构：
[1] Monash Univ, Dept Chem Engn, Clayton, Vic 3800, Australia
[2] Monash Univ, Monash Ctr Electron Microscopy, Clayton, Vic 3800, Australia
来源：
CHEMPHYSCHEM | 2009年 / 10卷 / 02期
基金：
澳大利亚研究理事会;
关键词：
biosensors; electrochemistry; gold; nanostructures; template synthesis; GLUCOSE-OXIDASE; MULTILAYERED CONSTRUCTION; ELECTROCHEMICAL IMPEDANCE; FILM ELECTRODES; SURFACE-AREA; FABRICATION; AU; OXIDATION; SENSORS; NANOELECTRODE;
D O I：
10.1002/cphc.200800538
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report the fabrication of porous gold nonowire arrays by means of a one-step electrodeposition method utilizing nanochannel alumina templates. The microstructure of gold nanowires depends strongly on the current density. The formation of porous gold nanowires is attributed to disperse crystallization under conditions of low nucleation rate. Interfacial electron transport through the porous gold nonowires is studied by electrochemical impedance spectroscopy. Cyclic voltammetric studies on the porous gold nanowire arrays reveal a low-potential electrocatalytic response towards hydrogen peroxide. The properties of the glucose oxidase modified porous gold nanowire array electrode are elucidated and compared with those of nonporous enzyme electrodes. The glucose oxidase modified porous gold nanowire-array electrode is shown to be an excellent electrochemical biosensor for the detection of glucose.
引用
收藏
页码：436 / 441
页数：6
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