[23a-E203-1~11] 17.1 Carbon nanotubes & other nanocarbon materials

△ [23a-E203-10] Narrowing diameter of taller and denser CNT by oxidation degree control of Al_xO_y catalyst supporting layer

〇Yuichiro Tanaka¹, Mitsuaki Maetani¹, Haolu Lin¹, Hiroo Suzuki¹, Takeshi Nishikawa¹, Yasuhiko Hayashi¹ (1.Okayama Univ.)

Keywords:carbon nanotube

In order to synthesize long and dense carbon nanotubes (CNTs), we attempted to control the structure of the alumina layer by controlling the oxygen pressure in the alumina deposition process. Observing the deposited alumina surface using atomic force microscopy (AFM) found that the structure could be classified into three patterns depending on the oxygen pressure. The catalyst particles were the smallest in diameter and formed in high density when the oxygen pressure during alumina deposition was 1.5×10^-2 Pa.