The effect of sorbed hydrogen on low temperature radial thermal expansion of single walled carbon nanotube bundles

Abstract

The effect of a normal H2 impurity upon the radial thermal expansion (Ar) of SWNT bundles has been investigated in the interval T = 2.2-27 K using the dilatometric method. It is found that H2 saturation of SWNT bundles causes a shift of the temperature interval of the negative thermal expansion towards lower (as compared to pure CNTs) temperatures and a sharp increase in the magnitude of (Ar) in the whole range of temperatures investigated. The low temperature desorption of H2 from a powder consisting of bundles of SWNTs, open and closed at the ends, has been investigated.

10 pages, 2 figures

References in corpus (6)

• Desorption kinetics and interaction of Xe with single-wall carbon nanotube bundles
• Radial thermal expansion of single-walled carbon nanotube bundles at low temperatures
• H2 in the interstitial channels of nanotube bundles
• 4He adsorbed inside (10,10) single walled carbon nanotubes
• Structure and heat capacity of Ne and Xe adsorbed on a bundle of carbon nanotubes
• Thermodynamic properties and correlation functions of Ar films on the surface of a bundle of nanotubes

Cited by in corpus (4)

• The heat capacity of nitrogen chains in grooves of single-walled carbon nanotube bundles
• Quantum effects in the radial thermal expansion of bundles of single-walled carbon nanotubes doped with 4He
• Quantum phenomena in the radial thermal expansion of bundles of single-walled carbon nanotubes doped with 3He. A giant isotope effect
• The effect of O2 impurities on the low temperature radial thermal expansion of bundles of closed single-walled carbon nanotubes