Metal nanowire arrays by electrodeposition

被引:130
作者
Walter, EC
Zach, MP
Favier, F
Murray, BJ
Inazu, K
Hemminger, JC
Penner, RM [1 ]
机构
[1] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA
[2] Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA
[3] Univ Montpellier 2, CNRS, Lab Agregats Mol & Mat Inorgan, F-34095 Montpellier, France
[4] Tokyo Inst Technol, Dept Environm Chem & Engn, Midori Ku, Yokohama, Kanagawa 2268502, Japan
关键词
electrochemistry; electrodeposition; nanowires; metals; sensors;
D O I
10.1002/cphc.200390022
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 describe two related methods for preparing arrays of nanowires composed of molybdenum, copper, nickel, gold, and palladium. Nanowires were obtained by selectively electrodepositing either a metal oxide or a metal at the step edges present on the basal plane of highly oriented pyrolytic graphite (HOPG) electrodes. If a metal oxide was electrodeposited, then nanowires of the parent metal were obtained by reduction at elevated temperature in hydrogen. The resulting nanowires were organized in parallel arrays of 100-1000 wires. These nanowires were long (some >500 mum), polycrystalline, and approximately hemicylindrical in cross-section. The nanowire arrays prepared by electrodeposition were also "portable". After embedding the nanowires in a polymer or cyanoacrylate film, arrays of nanowires could be lifted off the graphite surface thereby facilitating the incorporation of metal nonowire arrays into devices such as sensors.
引用
收藏
页码:131 / 138
页数:8
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