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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. (2011) One-step preparation of feco nanoparticles in a SBA-16 matrix as catalysts for carbon nanotubes growth. Journal of Nanoscience and Nanotechnology, 11 (8). pp. 6735-6746. ISSN 1533-4880. (doi:10.1166/jnn.2011.4230) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1166/jnn.2011.4230

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.

Item Type: Article
DOI/Identification number: 10.1166/jnn.2011.4230
Uncontrolled keywords: Carbon nanotubes (CNTs), Feco alloy, Mesoporous silica, Nanocomposites, Sol-Gel, Bcc structure, Catalytic Chemical Vapour Deposition, Fe-Co alloy, FeCo nanoparticles, High-resolution TEM, Low-angle X ray diffraction, matrix, Mesoporous silica, Mesoporous structures, Metal loadings, Single-step, Sol-gel technique, X ray absorption fine structures, Calcination, Catalysts, Chemical vapor deposition, Crystal structure, Nanoparticles, Physisorption, Sol-gel process, Sol-gels, Transmission electron microscopy, X ray diffraction, Nanocomposites
Subjects: Q Science > QC Physics > QC176.8.N35 Nanoscience, nanotechnology
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Anna Corrias
Date Deposited: 16 Dec 2014 14:40 UTC
Last Modified: 29 May 2019 13:56 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/46170 (The current URI for this page, for reference purposes)
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