|
|||||
|
|
Multiwall carbon nanotubes synthesized by RF-CCVD on novel CaO supported catalysts |
|
| Authors: | Alexandru R Biris Enkeleda Dervishi Yang Xu Ioan Mi?an |
| Institution: | a National Institute for Isotopic and Molecular Technologies, PO Box 700, R-400293 Cluj-Napoca, Romania b Applied Science Department, Nanotechnology Center, University of Arkansas at Little Rock, AR 72204, USA c NASA, ASRC, Kennedy Space Center, FL 32899, USA |
| Abstract: | 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. |
| Keywords: | Catalysis CaO Carbon nanotubes |
| 本文献已被 ScienceDirect 等数据库收录！ | |