Purification process of carbon nanotubes

Details Purification process of carbon nanotubes Purification process of carbon nanotubes

2006-07-11

2006-07-11

Zucker, Paul A. (Department: 1621)

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By addition of extraneous agent, e.g., solvent, etc.

C977S750000

Reexamination Certificate

active

07074980

ABSTRACT:
The present invention describes a new method for the purification of carbon nanotubes from contaminants deriving from industrial production, constituted by amorphous or carbon crystalline material and metals used for catalysis. The method provides for their organic furretionalization obtaining dirivatized nanotubes, precipitation of functionalized nanotubes and subsequent regeneration of non-functionalized nanotubes by heat treatment.

REFERENCES:
Bandow, et al. “Purification and Magnetic Properties of Carbon Nanotubes” Applied Physics A 67, 1998, pp. 23-27.
Bonard, et al. “Purification and Size-Selection of Carbon Nanotubes” Advanced Materials, vol. 9. No. 10, pp. 827-831.
Boul. et al. “Reversible Sidewall Functionalization of Buckytubes” Chemical Physics Letters, 310, 1999, pp. 367-372.
Chiang, et al. “Purification and Characterization of Single-Wall Carbon Nanotubes” J. Phys. Chem B., 2001, 105, 1157-1161.
Georgakilas, et al. “Organic Functionalized Carbon Nanotubes” AIP Conf. Proc.(USA) 2002, 633, pp. 73-76.
Georgakilas, et al. “Organic Functionalization of Carbon Nanotubes” J. Am. Chem. Soc., vol. 124, No. 5, p. 760.
Georgakilas, et al. “Purification of HIPCO Carbon Nanotubes via Organic Functionalization” J. Am. Chem. Soc., 2002, 124, 14318-14319.

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