Synthesis and purification of Carbon nanotubes

International Journal of Nano Dimension

مقاله 2، دوره 5، شماره 2، تیر 2014، صفحه 97-104   

نوع مقاله: Reasearch Paper

شناسه دیجیتال (DOI): 10.7508/ijnd.2014.02.001

نویسندگان

A. Ali Moosa^{* 1}؛ M. Ibrahim²؛ R. Farooq Salloom³

¹Technical College –Baghdad Iraq

²Department of Chemical Eng. University of Technology Baghdad-Iraq

³Department of Production Engineering and Metallurgy – University of Technology Baghdad-Iraq

چکیده

In this study, multi wall carbon nanotubes (MWCNTs) were synthesized by Chemical vapor deposition (CVD) method using two different catalysts (Fe nanoparticles) and (Ni nanoparticles) with  two different substrates: Quartz and Alumina. Acetylene gas was used as a carbon source and Argon as a carrier gas at different temperatures and different times to study the effects of these parameters on CNTs yield. The produced MWCNTs were then purified by oxidation followed by chemical method involving treatment of MWCNTs with concentrated acids (H₂SO₄ and HNO₃) to remove impurities. The MWCNTs were then functionalized by acidic treatment. The functionalized MWCNTs were then coated with Nickel using electroless plating method. Metal matrix composites (MMCs) were prepared by powder metallurgy method using Al/uncoated MWCNTs and Al/coated MWCNTs. The results show that the diameter range of prepared MWCNTs was (30-50) nm. The yield of CNTs using Ni nanoparticles as catalyst is higher than that of using Fe nanoparticles as catalyst. The coated CNTs have diameters ranging from 65-85 nm. The hardness of Al/coated CNTs composites is higher than that of Al/uncoated MWCNTs composites.

کلیدواژه‌ها

Synthesis؛ Carbon nanotubes؛ catalyst؛ Purification؛ Oxidation