Effective Nondestructive Purification of Single-Walled Carbon Nanotubes Based on High-Speed Centrifugation with a Photochemically Removable Dispersant

2014 ◽  
Vol 118 (9) ◽  
pp. 5013-5019 ◽  
Author(s):  
Yoko Matsuzawa ◽  
Yuko Takada ◽  
Tetsuya Kodaira ◽  
Hideyuki Kihara ◽  
Hiromichi Kataura ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
High Speed ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Facile and Effective Purification of Arc-Discharged Single-Walled Carbon Nanotubes by Centrifugation

2014 ◽  
Vol 590 ◽  
pp. 211-215 ◽  
Author(s):  
Shu Xiu ◽  
Min Lang ◽  
Jin Ling Gao ◽  
Yong Fu Lian
Keyword(s):  
Carbon Nanotubes ◽  
High Speed ◽  
Metal Oxide Nanoparticles ◽  
Single Walled Carbon Nanotubes ◽  
Dispersion Phase ◽  
Single Walled Carbon ◽  
Carbon Impurities ◽  
Metal Metal ◽  
Hydrochloric Acid Treatment ◽  
Walled Carbon Nanotubes

Arc-discharged single-walled carbon nanotubes were purified by successive heating in the air, hydrochloric acid treatment, supersonic dispersion in aqueous sodium deoxycholic acid solution, and high-speed centrifugation. Scanning electron microscopy observation evidenced that amorphous carbon, metal/metal oxide nanoparticles, and non-tube carbon impurities are separated from single-walled carbon nanotubes step by step. The relative carbonaceous purity of the purified single-walled carbon nanotubes to the as-produced materials was estimated to be ~7.42 by solution/dispersion-phase near-IR spectroscopy.

Purity Evaluation of Single-Walled Carbon Nanotubes Using Thermogravimetric Analysis

2013 ◽  
Vol 51 (2) ◽  
pp. 137-144
Author(s):  
Naesung Lee ◽  
Jeung Choon Goak ◽  
Tae Yang Kim ◽  
Jongwan Jung ◽  
Young-Soo Seo ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Thermogravimetric Analysis ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Purity Evaluation ◽  
Walled Carbon Nanotubes
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