Presentation Information
[8p-PA3-32]Purification and Surface Characterization of Carbon Nanotubes Synthesized from Waste Carbon Resources by Selective Microwave Heating
〇(M2)Masakatsu Fujii1, I P. Abdi Karya1, Toshiyuki Mizutani1, Kouhei Nakagawa1, Fumihiro Nishimura2, Ryouiti Ishimatsu1, Toyohiko Nishiumi1, Takayuki Asano1, Seitarou Mitsudo1 (1.University of Fukui, 2.HISAC, Univ. of Fukui)
Keywords:
Carbon Nanotubes,CNTs Synthesized from Waste Carbon Resources,Purification of CNTs
In this study, carbon nanotubes (CNTs) synthesized from waste carbon resources by selective microwave heating were purified through gas-phase pretreatment and chemical treatments using acid and NaOH. The pretreatment enabled surface characterization, and the BET specific surface area was evaluated as 34.5 m2/g. The Raman G/D ratio increased from 0.56 to 2.13, indicating the removal of amorphous carbon and the clarification of the graphitic CNT structure. TEM observations also confirmed a decrease in catalyst-derived residues after purification. These results demonstrate that the purification process enables surface evaluation while preserving the CNT structure. In future work, the purified CNTs will be evaluated as electrode materials for electrochemical applications.