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United States Patent 5,346,683
Green, et. al.Sept. 13, 1994

Uncapped and thinned carbon nanotubes and process

Inventors: Green; Malcolm L. H. (Oxford, GBX); Tsang; Shik C. (Oxford, GBX).
Assignee: Gas Research Institute (Chicago, IL).
Appl. No.: 037,573
Filed: Mar. 26, 1993

Intl. Cl.:D01F 9/12;
U.S. Cl.:423/447.2; 422/312.;
Field of Search:367;376;377;371

References Cited

U.S. Patent Documents
5,094,906Mar., 1992Witzke et al. 428/220

Other References

Primary Examiner: Warden; Robert J.
Assistant Examiner: Thornton; Krisanne M.

Abstract

Uncapped and thinned carbon nanotubes are produced by reaction with a flowing reactant gas capable of reaction selectively with carbon atoms in the capped region of nanotubes. The uncapped and thinned nanotubes provide open compartments for insertion of chemicals and exhibit enhanced surface area with modified physical and chemical properties.

22 Claims, 7 Drawing Figures


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