PROCESS FOR THE SIMULTANEOUS AND SELECTIVE PREPARATION OF SINGLE-WALLED AND MULTI-WALLED CARBON NANOTUBES

The present invention provides a process for the simultaneous and selective growth of single walled and multiwalled carbon nanotubes using electric arc discharge technique. According to present development it is possible to synthesise and collect catalyst free carbon nanotubes from cathode deposit....

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Bibliographische Detailangaben
Hauptverfasser:	GUPTA ANIL KUMAR, DHAMI TERSEM LAL, MATHUR RAKESH BEHARI, SINGH BHANU PRATAP, NIL CHHOTEY LAL, GHAWANA JAGDISH
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	The present invention provides a process for the simultaneous and selective growth of single walled and multiwalled carbon nanotubes using electric arc discharge technique. According to present development it is possible to synthesise and collect catalyst free carbon nanotubes from cathode deposit. A mechanism of cooling coil arrangement was designed and used inside the arc discharge chamber so as to be capable to grow sufficient amount of single walled carbon nanotubes in the form of webs surrounding the coil. The present invention offers a scalable way for producing both SWNTs and MWNTs in the single run.