Influence of high temperature treatments on single-walled carbon nanotubes structure, morphology and surface properties

• Published in: Carbon (New York) Vol. 39; no. 5; pp. 685 - 695
• Main Authors: Bougrine, A., Dupont-Pavlovsky, N., Naji, A., Ghanbaja, J., Marêché, J.F., Billaud, D.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01-01-2001; Elsevier Science
• Subjects: A. Carbon nanotubes; B. Heat treatment; C. Adsorption; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Nanoscale materials and structures: fabrication and characterization; Physics; Transmission electron microscopy (TEM); B. Heat treatment; Transmission electron microscopy (TEM); A. Carbon nanotubes; C. Adsorption; Adsorption; Nanotubes; Surface properties; High temperature; Experimental study; Microstructure; Carbon; Nanostructured materials; TEM; Heat treatments
• ISSN: 0008-6223; 1873-3891
• DOI: 10.1016/S0008-6223(00)00165-2

Single-walled carbon nanotubes produced by the MER Corporation have been treated in an argon atmosphere at temperatures between 1400 and 2400°C. The modifications resulting from the heat treatment have been followed by adsorption volumetry and TEM measurements. 1600°C appears as a turning point for the high temperature treatments. Heating nanotubes up to 1600°C essentially results in the removal of metal particles. At higher temperatures the changes in morphology are predominant, and single-walled nanotubes packed in bundles are transformed into multi-walled nanotubes.