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Title: Alloy hydride catalyst route for the synthesis of single-walled carbon nanotubes, multi-walled carbon nanotubes and magnetic metal-filled multi-walled carbon nanotubes
Authors: Reddy, A.L.M.
Shaijumon, M.M.
Ramaprabhu, S.
Keywords: Alloys
Chemical vapor deposition
Energy dispersive spectroscopy
High resolution electron microscopy
Magnetic materials
Scanning electron microscopy
Synthesis (chemical)
Thermogravimetric analysis
Transmission electron microscopy
High resolution transmission electron microscopy (HRTEM)
Multi walled carbon nanotubes (MWNT)
Single walled carbon nanotubes (SWNTs)
Vibrating sample magnetometry
Carbon nanotubes
Issue Date: 2006
Citation: Nanotechnology, 17(21), 5299-5305
Abstract: This paper presents a novel, cost-effective and single-step technique for the synthesis of single-walled carbon nanotubes (SWNTs), multi-walled carbon nanotubes (MWNTs) and magnetic metal-filled MWNTs using a fixed bed reaction thermal chemical vapour deposition (CVD) using alloy hydride catalyst. The single-step method involves the pyrolysis of methane at suitable temperatures over fine powders of certain Mischmetal-based AB3 alloy hydride catalysts, prepared through the hydrogen decrepitation technique. These carbon nanostructures have been characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), energy dispersive x-ray analysis (EDAX), thermo-gravimetric analysis (TGA) and Raman spectroscopy. The magnetic properties of these metal-filled MWNTs have been studied by vibrating sample magnetometry, and the results are discussed. � IOP Publishing Ltd.
ISSN: 9574484
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