Invention Grant
- Patent Title: Method for purification of as-produced fullerene nanotubes
- Patent Title (中): 纯化富勒烯纳米管的方法
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Application No.: US11507960Application Date: 2006-08-22
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Publication No.: US07354563B2Publication Date: 2008-04-08
- Inventor: Richard E. Smalley , Daniel T. Colbert , Hongjie Dai , Jie Liu , Andrew G. Rinzler , Jason H. Hafner , Ken Smith , Ting Guo , Pavel Nikolaev , Andreas Thess
- Applicant: Richard E. Smalley , Daniel T. Colbert , Hongjie Dai , Jie Liu , Andrew G. Rinzler , Jason H. Hafner , Ken Smith , Ting Guo , Pavel Nikolaev , Andreas Thess
- Applicant Address: US TX Houston
- Assignee: William Marsh Rice University
- Current Assignee: William Marsh Rice University
- Current Assignee Address: US TX Houston
- Agency: Fish & Richardson P.C.
- Main IPC: B82B3/00
- IPC: B82B3/00

Abstract:
This invention relates generally to a fullerene nanotube purification process and more particularly to a purification process that comprises heating the fullerene nanotube-containing felt under oxidizing conditions to remove the amorphous carbon deposits and other contaminating materials. In a preferred mode of this purification procedure, the felt is heated in an aqueous solution of an inorganic oxidant, such as nitric acid, a mixture of hydrogen peroxide and sulfuric acid, or a potassium permanganate. Preferably, fullerene nanotube-containing felts are refluxed in an aqueous solution of an oxidizing acid at a concentration high enough to etch away amorphous carbon deposits within a practical time frame, but not so high that the fullerene nanotube material will be etched to a significant degree. When material having a high proportion of fullerene nanotubes is purified, the preparation produced will be enriched in fullerene nanotubes, so that the fullerene nanotubes are substantially free of other material.
Public/Granted literature
- US20080063588A1 METHOD FOR PURIFICATION OF AS-PRODUCED FULLERENE NANOTUBES Public/Granted day:2008-03-13
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