Questions on Nanotechnology

1. (a) Explain what is meant by term ‘nanotechnology’.

(b) Describe the basic structure of a nanotube in terms of graphene and buckminsterfullerene.

(c) Discuss reasons why the rise in the use of nanoparticles may be hazardous to human health.

2. State two different reasons why nanocatalysts can be extremely efficient.

3. Explain why nanotubes are good conductors of electricity and heat.

4. Describe how the high pressure carbon monoxide process can be used to produce single-walled carbon nanotubes from iron pentacarbonyl, Fe(CO)₅.

5. Yields of up to 30% can be obtained when arc discharge is used to prepare carbon nanotubes.
Explain how this process works and compare it to the chemical vapour deposition process, CVD, for making carbon nanotubes.

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