A simple method for the continuous production of carbon nanotubes

A simplified are-method is presented which allows for the continuous synthesis of multi-walled carbon nanotubes. In its basic form, the method requires only a de power supply, a graphite electrode, and a container of liquid nitrogen with no need for pumps, seals, water-cooled vacuum chambers, or purge-gas handling systems. High-quality nanotubes are produced in high yield. The system is easily adaptable to produce large quantities of nanotubes continuously without interruptions for electrode replacement, chamber cleaning, or gas purging. (C) 2000 Elsevier Science B.V. All rights reserved.