Synthesis of very dense carbon nanotube bundles using silica supported metal catalyst

Author

Jong Hyuk Yim ; Seungho Choi ; Soonil Lee ; Ken Ha Koh

Author_Institution

Dept. of Molecular Sci. & Technol., Ajou Univ., Suwon, South Korea

fYear

2003

fDate

7-11 July 2003

Firstpage

141

Lastpage

142

Abstract

Films composed of iron nanoparticles dispersed in silica were prepared starting from the mixture of tetraethoxysilane(TEOS), iron nitrate Fe(NO/sub 3/)/sub 3//spl middot/9H/sub 2/O, and ethanol using the solgel method. As it turned out, the silica supported iron nanoparticles were very efficient catalysts for carbon nanotube growth, and therefore, very long and dense bundles of multiwall carbon nanotubes were synthesized; the nanotube density was so high that nanotubes were appeared aligned in spite of the curliness of the individual nanotubes.

Keywords

carbon nanotubes; nanotechnology; sol-gel processing; C; carbon nanotube growth; catalysts; dense carbon nanotube bundles synthesis; iron nanoparticles dispersion; iron nitrate; multiwall carbon nanotubes; nanotube density; silica supported iron nanoparticles; silica supported metal catalyst; solgel method; tetraethoxysilane; Carbon nanotubes; Degradation; Ethanol; Hydrogen; Iron; Nanoparticles; Semiconductor films; Silicon compounds; Solvents; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Microelectronics Conference, 2003. Technical Digest of the 16th International

Conference_Location

Osaka, Japan

Print_ISBN

4-8181-9515-4

Type

conf

DOI

10.1109/IVMC.2003.1223023

Filename

1223023