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

Carta, D., Navarra, G., Falqui, A., Kónya, Z., Corrias, A. (2012) Structural characterization of FeCo alloy nanoparticles embedded in SBA-16 and their catalytic application for carbon nanotubes production. RSC Advances, 2 (20). pp. 7886-7893. ISSN 2046-2069. (doi:10.1039/C2RA01147F) (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)

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Official URL
http://dx.doi.org/10.1039/C2RA01147F

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.

Item Type: Article
DOI/Identification number: 10.1039/C2RA01147F
Uncontrolled keywords: Bcc structure, Catalytic applications, Catalytic Chemical Vapour Deposition, Cell separation, Data storage, Extended X-ray absorption fine structures, Fe-Co alloy, FeCo nanoparticles, In-situ, Magnetic Carriers, Mesoporous Silica, Reduction treatment, Structural characterization, Chemical vapor deposition, Crystal structure, Drug delivery, Extended X ray absorption fine structure spectroscopy, Nanoparticles, Transmission electron microscopy, Nanomagnetics
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 13:46 UTC
Last Modified: 29 May 2019 13:56 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/46161 (The current URI for this page, for reference purposes)
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