Nano Archive

Synthesis of coiled carbon nanotubes on Co/Al2O3 catalysts in a fluidised-bed

Liu, Jun and Harris, Andrew T. (2010) Synthesis of coiled carbon nanotubes on Co/Al2O3 catalysts in a fluidised-bed. Journal of Nanoparticle Research, 12 (2). pp. 645-653.

[img]
Preview
PDF
597Kb

Abstract

Mixtures of regularly coiled and straight multi-walled carbon nanotubes (MWNTs) were synthesised on alumina supported Co catalysts prepared by pH controlled, wet impregnation. The synthesis reaction was performed under C2H2:H2:N2 at 750 °C in a fluidised-bed for 30 min. Scanning electron microscopy/energy dispersive X-ray spectroscopy shows good distribution of the active Co particles on the surface of the alumina support. Determined from 10 individual SEM images from the same product batch, the CNTs present are typically from 10 to 40 nm in diameter. Thermogravimetric analysis (TGA) and Raman spectroscopy indicate the total oxidative weight loss is independent of pH during catalyst preparation. This study is the first to report the use of a fluidised-bed for the synthesis of coiled MWNTs, using alumina supported Co catalysts.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:8212
Deposited By:JNCASR
Deposited On:10 Feb 2010 10:02
Last Modified:10 Feb 2010 10:02

Repository Staff Only: item control page