Desorption kinetics and interaction of Xe with single-wall carbon nanotube bundles
نویسندگان
چکیده
منابع مشابه
Novel polygonized single-wall carbon nanotube bundles.
We have synthesized novel crystalline ropes of "polygonized" single-wall carbon nanotubes (SWCNTs). The tubes exhibit rounded-hexagonal cross sections in contrast to the earlier observations of nearly circular tubes. To investigate the structural characteristics of the lattice of SWCNTs we have performed extensive molecular-dynamics simulations. We find several metastable structures of the latt...
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We report high pressure Raman studies on single wall carbon nanotube bundles under hydrostatic conditions using two different pressure transmitting media, alcohol mixture and pure water. The radial and tangential modes show a blue shift when SWNT bundle is immersed in the liquids at ambient pressures. The pressure dependence of the radial modes is the same in both liquids. However, the pressure...
متن کاملInvestigation of the interaction of carbon dioxide fluid with internal and external single-wall carbon nanotubes by DFT
The effective parameters of (5, 0) and (5, 5) single-wall carbon nanotubes during the interaction with carbon dioxide as sensors are determined. The interaction of carbon dioxide molecules with internal and external walls of the nanotubes is studied using Gaussian 03 coding by density functional theory (DFT) at the B3LYP/6-311G level of theory. CO2 rotation around tube axles vertically and par...
متن کاملPhysisorption of molecular oxygen on single-wall carbon nanotube bundles and graphite
We present a study on the kinetics of oxygen adsorption and desorption from single-wall carbon nanotube ~SWNT! and highly oriented pyrolytic graphite ~HOPG! samples. Thermal-desorption spectra for SWNT samples show a broad desorption feature peaked at 62 K, which is shifted to a significantly higher temperature than the low-coverage desorption feature on HOPG. The low-coverage O2 binding energy...
متن کاملFormation of Single-Wall Carbon Nanotube Superbundles
Since their discovery in 1993,1,2 carbon single-wall nanotubes (SWNTs) have been of great interest because of their expected novel electronic,3 mechanical,4 and gas adsorption properties.5 Difficulties arise in measuring these various properties because the SWNTs currently available for analyses have very small bundle sizes (1020 nm) and are typically in random orientations. A vital step for th...
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ژورنال
عنوان ژورنال: Chemical Physics Letters
سال: 2002
ISSN: 0009-2614
DOI: 10.1016/s0009-2614(02)01175-2