Microstructural features of Co-filled carbon nanotubes
| Autor: | Ning Lun, Xicheng Ma, Shenli Li, Feng-Zhao Li, Yuanhua Cai, Qing Ao, Shulin Wen |
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| Rok vydání: | 2003 |
| Předmět: |
Nanotube
Materials science Mechanical Engineering Nanotechnology Chemical vapor deposition Carbon nanotube Condensed Matter Physics law.invention Chemical engineering Transition metal Mechanics of Materials law Transmission electron microscopy General Materials Science Nanorod Selected area diffraction High-resolution transmission electron microscopy |
| Zdroj: | Materials Letters. 57:2879-2884 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/s0167-577x(02)01391-5 |
| Popis: | Cobalt-filled carbon nanotubes (CNTs) were prepared in situ in the decomposition of benzene over Co/silica-gel catalysts. Transmission electron microscopy (TEM) investigation showed that the products contained abundance of carbon nanotubes and most 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 α-Co with fcc structure, which frequently consists of twinned boundaries. Based on the experimental results, a possible growth mechanism of the Co-filled nanotubes was proposed. |
| Databáze: | OpenAIRE |
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