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- Title
Synthesis and Characterization of Magnetic Metal-encapsulated Multi-walled Carbon Nanobeads.
- Authors
Leela Mohana Reddy, A.; Ramaprabhu, S.
- Abstract
A novel, cost-effective, easy and single-step process for the synthesis of large quantities of magnetic metal-encapsulated multi-walled carbon nanobeads (MWNB) and multi-walled carbon nanotubes (MWNT) using catalytic chemical vapour deposition of methane over Mischmetal-based AB3 alloy hydride catalyst is presented. The growth mechanism of metal-encapsulated MWNB and MWNT has been discussed based on the catalytically controlled root-growth mode. These carbon nanostructures have been characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM and HRTEM), energy dispersive analysis of X-ray (EDAX) and thermogravimetric analysis (TGA). Magnetic properties of metal-filled nanobeads have been studied using PAR vibrating sample magnetometer up to a magnetic field of 10 kOe, and the results have been compared with those of metal-filled MWNT.
- Subjects
NANOCHEMISTRY; CATALYSTS; CHEMICAL vapor deposition; METAL organic chemical vapor deposition; MAGNETIZATION; CARBON nanotubes; MISCHMETAL; SCANNING electron microscopy; X-ray spectroscopy
- Publication
Nanoscale Research Letters, 2008, Vol 3, Issue 2, p76
- ISSN
1931-7573
- Publication type
Article
- DOI
10.1007/s11671-008-9116-6