scholarly journals Hydrogen adsorption and cohesive energy of single-walled carbon nanotubes

1999 ◽  
Vol 74 (16) ◽  
pp. 2307-2309 ◽  
Author(s):  
Y. Ye ◽  
C. C. Ahn ◽  
C. Witham ◽  
B. Fultz ◽  
J. Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Cohesive Energy ◽  
Hydrogen Adsorption ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Deposition of Various Metals on Vertically-Aligned Single-Walled Carbon Nanotubes

2007 ◽  
Author(s):  
Kei Ishikawa ◽  
Hai Duong ◽  
Junichiro Shiomi ◽  
Shigeo Maruyama
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Scanning Electron Microscopy ◽  
Cohesive Energy ◽  
Layer Structure ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Vertically Aligned ◽  
Walled Carbon Nanotubes ◽  
Scanning Electron

Evaporation of different metals (Au, Ti, Al and Pd) onto Vertically-Aligned Single-Walled Carbon Nanotubes (VASWNT) has been studied. Observations through Scanning Electron Microscopy (SEM) showed a clear metal-dependence of the deposition layer structure on top of the VASWNT, reflecting the variation of wettability and cohesive energy of each metal. These characteristics also influence the structures of the metal penetrated through the top surface into VASWNT film, where metal forms particles inside VASWNT film except for Ti. A simple annealing technique to remove metals penetrated in the SWNT films is demonstrated. Some peculiar morphologies found during the processes are also presented.

scholarly journals DFT Calculations of Hydrogen Adsorption inside Single-Walled Carbon Nanotubes

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Igor K. Petrushenko
Keyword(s):  
Carbon Nanotubes ◽  
Dft Calculations ◽  
Hydrogen Molecule ◽  
Hydrogen Adsorption ◽  
Single Walled Carbon Nanotubes ◽  
Binding Energies ◽  
Hydrogen Binding ◽  
Single Walled Carbon ◽  
Hydrogen Molecules ◽  
Walled Carbon Nanotubes

DFT calculations have been performed to study noncovalent interactions of a hydrogen molecule and single-walled carbon nanotubes (SWCNTs) of various diameters. Understanding these interactions is crucial for the development of systems for hydrogen storage and delivery. The barrier and barrier-free introduction of a hydrogen molecule into SWCNTs is observed. It has been found that hydrogen molecules bind differently onto SWCNTs, depending on their diameters and the orientation of an H2 molecule inside the SWCNT. The binding inside SWCNTs with small diameters ((3,3); (4,4)) is very unfavorable; the opposite situation is in the case of larger ((5,5); (6,6)) SWCNTs. Finally, in the case of ((7,7); (8,8)) SWCNTs, the hydrogen binding energies decrease, and their values approach to those of graphene.

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