Structural characterization of FeCo alloy nanoparticles embedded in SBA-16 and their catalytic application for carbon nanotubes production

D. Carta, G. Navarra, A. Falqui, Z. Kónya, A. Corrias

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The formation of FeCo alloy nanoparticles embedded in a highly ordered 3D cubic mesoporous silica matrix (SBA-16) was thoroughly studied using several techniques. In particular, the selectivity of Extended X-ray absorption fine structure and X-ray absorption near-edge structure spectroscopy at both the Fe and Co K-edges allowed us to determine that before reduction treatment Fe and Co are present in a poorly crystalline environment, while after reduction treatment FeCo nanoparticles with the typical bcc structure are formed. FeCo alloy nanoparticles are used in several applications: biomedical (magnetic carriers for drug delivery and cell separation), magnetic (data storage) and catalytic. In this work, FeCo nanoparticles formed in situ in the SBA-16 matrix were used for the production of carbon nanotubes by catalytic chemical vapour deposition. Transmission electron microscopy indicates that good quality multi-walled carbon nanotubes are obtained.

Original languageEnglish
Pages (from-to)7886-7893
Number of pages8
JournalRSC Advances
Volume2
Issue number20
DOIs
Publication statusPublished - Sep 14 2012

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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