The Properties and Applications of Silicon Nanotubes

Silicon nanotubes are tube-like nanoparticles which are made of silicon atoms. They are similar to carbon nanotubes and widely used in the semiconductor industry due to their exceptional electromechanical properties. Silicon nanotubes are used in electronics as they contain hydrogen molecules and behave like a metal fuel.

Chemical Properties

The chemical properties of silicon nanotubes are outlined in the following table:

Chemical Data
Chemical symbol Si
CAS No. 7440-21-3
Group 14
Electronic configuration [Ne] 3s2 3p2

Physical Properties

The physical properties of silicon nanotubes are given in the following table:

Properties Metric Imperial
Density 2330 kg/cm3 84176.59 lb/in3
Molar mass 28.08 g/mol -

Thermal Properties

The thermal properties of silicon nanotubes are provided in the table below:

Properties Metric Imperial
Melting point 1326.8°C 2420.2°F
Boiling point 2900°C 5252°F

Manufacturing Process

Silicon nanotubes can be synthesized by the process of chemical vapor deposition. The process uses an argon-filled reactor that employs an electric arc without the use of a catalyst.

They can also be prepared using a gas phase condensation technique.

Applications of Silicon Nanotubes

The key applications of silicon nanotubes are listed below:

  • Hydrogen storage in fuel cell vehicles
  • Durable cathode for lithium ion batteries
  • Luminescent display devices
  • Micro and integrated semiconductors
  • Nano-photoelectric devices
  • Biological applications


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