One-step preparation of feco nanoparticles in a SBA-16 matrix as catalysts for carbon nanotubes growth

D. Carta, M. F. Casula, A. Corrias, A. Falqui, Á Dombovári, A. Gálos, Z. Kónya

Research output: Article

8 Citations (Scopus)

Abstract

Nanocomposites containing FeCo alloy nanoparticles dispersed in a highly ordered 3D cubic Im3m mesoporous silica (SBA-16) matrix were prepared by a novel, single-step templated-assisted sol-gel technique. Two different approaches were used in the synthesis of nanocomposites; a pure SBA-16 sample was also prepared for comparison. Low-angle X-ray diffraction, transmission electron microscopy and N 2 physisorption at 77 K show that after metal loading, calcination at 500 °C and reduction in H 2 flux at 800 °C the nanocomposites retain the cubic mesoporous structure with pore size not very different from the pure matrix. X-ray absorption fine structure (EXAFS) analysis at Fe and Co K-edges demonstrates that the FeConanoparticles have the typical bcc structure. The final nanocomposites were tested as catalysts for the production of carbon nanotubes by catalytic chemical vapour deposition and high-resolution TEM shows that good quality multi-walled carbon nanotubes are obtained.

Original languageEnglish
Pages (from-to)6735-6746
Number of pages12
JournalJournal of Nanoscience and Nanotechnology
Volume11
Issue number8
DOIs
Publication statusPublished - aug. 2011

Fingerprint

Nanocomposites
Carbon Nanotubes
Nanoparticles
Carbon nanotubes
nanocomposites
carbon nanotubes
catalysts
nanoparticles
preparation
Catalysts
matrices
Growth
Transmission electron microscopy
transmission electron microscopy
Physisorption
X ray absorption
Polymethyl Methacrylate
Transmission Electron Microscopy
X-Ray Diffraction
Silicon Dioxide

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Science(all)
  • Bioengineering
  • Biomedical Engineering

Cite this

One-step preparation of feco nanoparticles in a SBA-16 matrix as catalysts for carbon nanotubes growth. / Carta, D.; Casula, M. F.; Corrias, A.; Falqui, A.; Dombovári, Á; Gálos, A.; Kónya, Z.

In: Journal of Nanoscience and Nanotechnology, Vol. 11, No. 8, 08.2011, p. 6735-6746.

Research output: Article

Carta, D. ; Casula, M. F. ; Corrias, A. ; Falqui, A. ; Dombovári, Á ; Gálos, A. ; Kónya, Z. / One-step preparation of feco nanoparticles in a SBA-16 matrix as catalysts for carbon nanotubes growth. In: Journal of Nanoscience and Nanotechnology. 2011 ; Vol. 11, No. 8. pp. 6735-6746.
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