| AVS 54th International Symposium | |
| Nanometer-scale Science and Technology | Thursday Sessions |
| Session NS-ThP |
| Session: | Nanometer-Scale Science & Techology Poster Session II |
| Presenter: | J.-Y. Hong, Sungkyunkwan University, Korea |
| Authors: | J.-Y. Hong, Sungkyunkwan University, Korea M.-H. Lee, Sungkyunkwan University, Korea W.C. Choi, Sungkyunkwan University, Korea C.-Y. Park, Sungkyunkwan University, Korea |
| Correspondent: | Click to Email |
One-dimensional carbide materials can be synthesized using multiwalled carbon nanotubes as templates by reaction with volatile oxide and/or halide species. Nanofibers may also be used as templates to produce carbon nanotubes with catalyst by temperature reactions. Electrospinning has received steadily increasing interest due to its ability to produce nanometer-sized fibers with a high level of reinforcement. Here we introduce carbon nanotubes (CNTs) synthesized using electrospun polyacrylonitrile (PAN) nanofibers. PAN and Fe composites as a catalyst were added to dimethylformamide (DMF) and the solution was stirred magnetically until PAN was fully dissolved. The spinning dope was transferred to a glass pipette mounted vertically in the electrospinning station. A voltage of 20kV was applied to the solution to start the spinning process. And the electrospun fibers were collected in a random mat. The PAN nanofibers were stabilized for 30min at 200°C and carbonized for 1h at 700°C. Then, the nanofibers were further heated to 900°C in acetylene as the carbon source. As the results of Raman spectroscopy and HR-TEM mesurements, carbon nanotubes were synthesized, at the same time, it was confirmed that the size of CNTs varies directly as that of the electorspun nanofibers. From these results, we suggest that the size of CNTs may be controlled by the PAN concentration in the electrospun nanofibers.