6 research outputs found
Carbon Nanotube Fabrication at Industrial Scale: Opportunities and Challenges
Careful research on different materials reveals that the material properties
are mostly affected by the size of it. Material size down to nanometer scale
exhibits some remarkable properties, resulting in unique physical and chemical
characteristics. In todays world of nanotechnology, carbon nanotubes (CNTs)
have become a high priority material because of their exclusive structure,
novel characteristics with enormous potential in many technological
applications. Till date chemical vapor deposition (CVD) is the preferred and
widely used technique among different CNT growth methods, because of its
potential advantage to produce CNTs of high purity, large yield with ease of
scale up and low setup cost. This article provides an overview of different CVD
methods for industrial scale fabrication of CNTs. The influence of material
aspect, viz. catalyst type, catalyst support, and growth control aspect, viz.
process temperature, pressure, catalyst concentration, are discussed.
Additionally, possible growth mechanisms concerning CNT formation are
described. Finally, the key challenges of the process are addressed with future
perspective.Comment: carbon nanotubes, chemical vapor depositio