Multiwall carbon nanotubes synthesized by RF-CCVD on novel CaO supported catalysts

Multiwall carbon nanotubes synthesized by RF-CCVD on novel CaO supported catalysts

Multiwall carbon nanotubes were synthesized on the FeCoCaO and FeMoCaO catalysts by RF-CCVD at 750 °C, 850 °C and 950 °C, using acetylene as the carbon source. Analytically, it was found that the nanotubes are well crystallized, with outside diameters ranging between 10 and 60 nm and a ratio of the...

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Bibliographic Details
Published in:Physics letters. A Vol. 372; no. 42; pp. 6416 - 6419
Main Authors: Biris, Alexandru R., Lupu, Dan, Dervishi, Enkeleda, Li, Zhongrui, Xu, Yang, Trigwell, Steve, Mişan, Ioan, Biris, Alexandru S.
Format: Journal Article
Language:English
Published: Elsevier B.V 13-10-2008
Subjects:
CaO
Carbon nanotubes
Catalysis
CaO
Carbon nanotubes
Catalysis
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Summary:Multiwall carbon nanotubes were synthesized on the FeCoCaO and FeMoCaO catalysts by RF-CCVD at 750 °C, 850 °C and 950 °C, using acetylene as the carbon source. Analytically, it was found that the nanotubes are well crystallized, with outside diameters ranging between 10 and 60 nm and a ratio of the outside to the inside diameters of 2 to 3. The nanotubes did not present amorphous carbon and their purity increased with the temperature of synthesis. A relatively large number of metallic nanoparticles of various dimensions and shapes encapsulated inside the nanotubes were observed by TEM in most of the nanotube samples.
ISSN:0375-9601
1873-2429
DOI:10.1016/j.physleta.2008.08.030