Combined Flame and Electrodeposition Synthesis of Energetic Coaxial Tungsten-Oxide/Aluminum Nanowire Arrays

被引：31

作者：

Dong, Zhizhong ^{[1
]}

Al-Sharab, Jafar F. ^{[2
]}

Kear, Bernard H. ^{[2
]}

Tse, Stephen D. ^{[1
]}

机构：

[1] Rutgers State Univ, Dept Mech & Aerosp Engn, Piscataway, NJ 08854 USA

[2] Rutgers State Univ, Dept Mat Sci & Engn, Piscataway, NJ 08854 USA

来源：

NANO LETTERS | 2013年 / 13卷 / 09期

基金：

美国国家科学基金会;

关键词：

Coaxial nanowire; aluminum electrodeposition; thermite; tungsten-oxide nanowire; ALUMINUM; COMBUSTION; BEHAVIOR; FUEL;

D O I：

10.1021/nl4021446

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A nanostructured thermite composite comprising an array of tungsten-oxide (WO2.9) nanowires (diameters of 20-50 nm and lengths of >10 mu m) coated with single-crystal aluminum (thickness of similar to 16 nm) has been fabricated. The method involves combined flame synthesis of tungsten-oxide nanowires and ionic-liquid electrodeposition of aluminum. The geometry not only presents an avenue to tailor heat-release characteristics due to anisotropic arrangement of fuel and oxidizer but also eliminates or minimizes the presence of an interfacial Al2O3 passivation layer. Upon ignition, the energetic nanocomposite exhibits strong exothermicity, thereby being useful for fundamental study of aluminothermic reactions as well as enhancing combustion characteristics.

引用

页码：4346 / 4350

页数：5

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