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M. STANCU1,* , G. RUXANDA1, D. CIUPARU1, A. DINESCU2
In this paper we report several different methods that can be used for the purification of multiwall carbon nanotubes (MWCNT) obtained by the AC arc discharge method. The purification of multiwall carbon nanotubes is required in order to eliminate the metal catalyst and amorphous carbon. The removal of the metal catalyst was carried out by treatment with different acids. Subsequently, we have applied two different methods for removing also the amorphous carbon. The first approach for the purifying of the MWCNT was the weak oxidation performed by refluxing the MWCNTs in strong acid for 6 h and the second method was the oxidation with air for 10 minutes. The samples were analyzed using FE-SEM (Field Emission Scanning Electron Microscope), powder X-Ray diffraction (XRD) and Raman spectroscopy and the results were discussed..
Multiwall carbon nanotubes, Purification, Refluxing treatment.
M. STANCU, G. RUXANDA, D. CIUPARU, A. DINESCU, Purification of multiwall carbon nanotubes obtained by AC arc discharge method, Optoelectronics and Advanced Materials - Rapid Communications, 5, 8, August 2011, pp.846-850 (2011).
Submitted at: June 7, 2011
Accepted at: Aug. 10, 2011
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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