[7a-C11-1~12] 17.1 Carbon nanotubes & other nanocarbon materials

[7a-C11-2] In-situ XANES study on chemical states of transition metal catalysts during SWNT growth

〇Makoto Kumakura¹, Hoshimitsu Kiribayashi¹, Takahiro Saida¹, Shigeya Naritsuka¹, Takahiro Maruyama¹ (1.Meijo Univ)

Keywords:Single-walled carbon nanotube, Transition metal catalyst, XANES

Single-walled carbon nanotubes (SWNTs) have been anticipated for applications to electronic devices because SWNTs have superior electrical properties. In general, transition metals such as Fe, Co and Ni are widely used as catalysts for SWNT growth. However, chemical states of catalyst metals during SWCNT growth have not been clarified and controversial, although the reaction process is essential to control the structure of SWNTs. In this study, we carried out in situ X-ray absorption near edge structure (XANES) measurements to clarify the chemical states of Co and Ni catalysts during SWNT growth.