Synthesis of Carbon Nanotubes by Single Zone Pyrolysis Technique

Selvakumar, N and Rajaguru, K and Santhosh Kumar, S and Siju, John and Manikandanath, NT and Jakeer, Khan and Barshilia, Harish C (2012) Synthesis of Carbon Nanotubes by Single Zone Pyrolysis Technique. Technical Report. National Aerospace Laboratories.

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Multi-walled carbon nanotube (MWNT) and combination of single-walled (SWNT) and MWNT were synthesized using pyrolysis assisted chemical vapor deposition method. A single hot zone furnace was used for the synthesis of carbon nanotubes at various temperatures in the range of 750-900C. The as-prepared CNT consisted of carbonaceous impurities and traces of transition metal contents. The as-prepared CNT was oxidized at 500C and then treated with hydrochloric acid which resulted in pure CNT with a purity of 95%. The carbon nanotubes were characterized using field emission scanning electron microscopy (FESEM) and micro-Raman spectroscopy techniques. FESEM images clearly showed the presence of carbon nanotubes and the diameters of the MWNT prepared at various temperatures were in the range of 35-100 nm. The Raman spectroscopy data also showed the presence of D, G and 2D peaks which confirm the presence of CNT.

Item Type: Monograph (Technical Report)
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Mr N Selvakumar
Date Deposited: 27 Nov 2012 04:16
Last Modified: 10 Sep 2015 08:49

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