Iron-carbon nanocomposite obtained by laser induced gas-phase reactions

被引：4

作者：

Dumitrache, F ^{[1
]}

Morjan, I ^{[1
]}

Alexandrescu, R ^{[1
]}

Rand, B ^{[1
]}

Ciupina, V ^{[1
]}

Prodan, G ^{[1
]}

Voicu, I ^{[1
]}

Sandu, I ^{[1
]}

Soare, I ^{[1
]}

Ploscaru, M ^{[1
]}

Fleaca, C ^{[1
]}

Brydson, R ^{[1
]}

Vasile, E ^{[1
]}

机构：

[1] Natl Inst Lasers Plasma & Radiat Phys, R-76900 Bucharest, Romania

来源：

PHOTON PROCESSING IN MICROELECTRONICS AND PHOTONICS II | 2003年 / 4977卷

关键词：

nanopowder; composite; laser-induced pyrolysis; Fe/C;

D O I：

10.1117/12.501664

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Iron-carbon composite nanopowders have been synthesized by the CO2 laser pyrolysis of gas-phase reactants. The experimental device allows for a very low reaction time and a rapid freezing that creates nanoscale-condensed particles. Iron pentacarbonyl and ethylene-acetylene mixtures were used as iron and carbon precursors. In a two-steps experiment, the reaction products may present themselves as iron-based nanoparticles dispersed in a carbon matrix. By a careful control of experimental parameters and radiation geometries we demonstrate the feasibility of an efficient and well-controlled, single-step technique for the production of iron-based nano-cores embedded in carbon layers. Highly dispersed nanoparticles, narrow size distributions and particles with about 4.5 - 6 nm mean diameters were obtained. Electron microscopy and Raman spectroscopy were used in order to analyze the structure and composition of the obtained nanopowders as well as their Soxhlet residue.

引用

页码：670 / 678

页数：9

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