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Growth and microstructure of Co-filled carbon nanotubes
- Source :
-
Materials Science & Engineering: A . Sep2003, Vol. 357 Issue 1/2, p308. 6p. - Publication Year :
- 2003
-
Abstract
- Cobalt-filled carbon nanotubes were prepared in situ in the decomposition of benzene over Co/silica-gel catalysts. Unlike the previous reports, in our experiments, the catalysts need not pre-reduced. Transmission electron microscopy (TEM) investigation showed that the as-made products contained abundance of carbon nanotubes (CNTs) and almost 100% of them were filled with metallic nanoparticles or nanorods. High-resolution TEM (HRTEM), selected area electron diffraction (SAED) patterns and energy dispersive X-ray spectroscopy (EDS) confirmed the presence of Co inside the nanotubes. The encapsulated Co was further identified as alpha-Co with face-centered cubic (fcc) structure, which frequently consists of twinned boundaries. Based on the experimental results, a possible growth mechanism of the Co-filled nanotubes was proposed. [Copyright &y& Elsevier]
- Subjects :
- *TRANSMISSION electron microscopy
*BENZENE
*NANOTUBES
Subjects
Details
- Language :
- English
- ISSN :
- 09215093
- Volume :
- 357
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Materials Science & Engineering: A
- Publication Type :
- Academic Journal
- Accession number :
- 10322466
- Full Text :
- https://doi.org/10.1016/S0921-5093(03)00250-8