[17p-C303-1~14] 17.1 Carbon nanotubes & other nanocarbon materials

△ [17p-C303-5] Effects of Reactive Gas Species in Plasmas on Preferential Synthesis of (6,4) Single-Walled Carbon Nanotubes

〇Takuya Shima¹, Bin Xu¹, Toshiro Kaneko¹, Toshiaki Kato^1,2 (1.Tohoku Univ., 2.JST PRESTO)

Keywords:Single-Walled Carbon Nanotubes, Chirality-Controlled, Plasma CVD

we have succeeded in high purity synthesis of (6,4) SWNTs by controlling the surface condition of the nanoscale catalyst for the first time. In this study, systematic investigations are carried out aiming for the elucidation of the correlation between (6,4) SWNTs growth and plasma CVD conditions to further increase the purity of (6,4) SWNTs. As a result, it is clarified that the purity of (6,4) SWNTs is influenced by the methane/ hydrogen gas mixing ratio in plasma CVD process. Furthermore, as the result of control experiment, it is found that certain active species in the plasma may contribute to increasing the purity of (6,4) SWNTs.