The hydrogen physisorption properties in single-walled carbon nanotube (SWNT) based materials were characterized. The SWNTs were highly purified and three useful pores for hydrogen physisorption were activated. Hydrogen was physisorbed in intra-tube pores at room temperature and the capacity was estimated to be about 0.3-0.4 wt. % at room temperature. The adsorption capacity can be explained by the Langmuir model. The intra-tube pores have large adsorption potential and this induces hydrogen physisorption at comparatively higher temperatures. This fact indicates the importance of fabricating sub-nanometer ordered pores for this phenomena.
|Number of pages||8|
|Journal||Applied Physics A: Materials Science and Processing|
|Publication status||Published - 2004 Apr|
ASJC Scopus subject areas
- Materials Science(all)
- Physics and Astronomy (miscellaneous)