Catalytic chemical vapour deposition of carbon nanotubes using Fe-doped alumina catalysts

Pezhman Zarabadi-Poor, Alireza Badiei, Ali Akbar Yousefi, Bradley D. Fahlman, Alireza Abbasi

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

The catalytic chemical vapour deposition (CCVD) of carbon nanotubes onto Fe-doped alumina catalysts, with varying iron concentrations and reaction times is described. Methane was used as a carbon source, and nanostructural growth was afforded at 1000 °C. Characterization of alumina-supported iron catalysts was done using N2 adsorption-desorption measurement and X-ray diffraction. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA) and Raman spectroscopy were used for characterization of resultant carbon nanotubes (CNTs). The SEM images indicate that diameter and length of as-produced CNTs depends on both iron content of the catalyst and reaction time; with lower iron concentrations, longer and thinner nanotubes were obtained. The yield of products was investigated by TGA, and showed that increasing the catalyst iron content and reaction time directly affect the amount of formed product.

Original languageEnglish
Pages (from-to)100-106
Number of pages7
JournalCatalysis Today
Volume150
Issue number1-2
DOIs
StatePublished - Feb 26 2010

Keywords

  • Alumina
  • CVD
  • Carbon nanoribbons
  • Carbon nanotubes
  • Fe/AlO
  • Supported catalysts

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