Synthesis and characterization of nanoporous gold nanowires

被引:191
作者
Ji, CX [1 ]
Searson, PC [1 ]
机构
[1] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA
关键词
D O I
10.1021/jp0222200
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 on a two-step process for the fabrication of nanoporous nanowires. The fabrication process involves electrochemical deposition of a single-phase binary alloy into a nanoporous template, followed by subsequent etching of the less noble component. These particles are characterized by diameters of 20 nm or larger, lengths of up to tens of microns, and a porous structure with controlled pore dimensions. In contrast to conventional solid nanoparticles, nonporous nanowires have a high surface area and a well-defined pore morphology. Furthermore, nanoporous segments can be incorporated into multisegment nanorods or nanowires. Here, we demonstrate the fabrication of nanoporous gold (NPG) nanowires and multisegment nanowires incorporating Au/NPG layers and Pt/NPG layers.
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页码:4494 / 4499
页数:6
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