Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon
Patent
1995-07-03
1997-12-16
Bos, Steven
Chemistry of inorganic compounds
Carbon or compound thereof
Elemental carbon
423460, 423461, 423445B, C01B 3100, D01F 912
Patent
active
056981759
ABSTRACT:
Disclosed is a process for purifying carbon nanotubes which has steps of 1) mixing carbon nanotubes which accompany carbon impurities with a reagent selected from a group consisting of oxidation agents, nitration agents and sulfonation agents in liquid phase, 2) reacting the carbon nanotubes with the reagent at a predetermined temperature in the liquid phase, wherein the carbon impurities except carbon nanotubes are selectively reacted to dissolve in the liquid phase, and 3) separating carbon nanotubes from which the impurities were released from the liquid phase then washing and drying it. A process for uncapping carbon nanotubes and a process for chemically modifying carbon nanotubes are also disclosed.
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Tsang, S.C., et al. "A simple chemical Method of Opening and Filling Carbon Nanotubes", Nature, vol. 372, 10 Nov. 1994, pp. 159-162.
Ebbesen Thomas
Hiura Hidefumi
Bos Steven
DiMauro Peter
NEC Corporation
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