| 简介 |
A method for producing a nanodiamond (n-diamond, p-diamond, i-carbon) in which a nanodia-mond is removed from an activated carbon containing the nanodiamond. The activated carbon is prepared by car-bonizing and/or activating a carbonaceous feedstock while restricting the presence of oxygen sufficiently to re-sult in the formation of nanodiamonds embedded in car-bon. The nanodiamonds can be separated and purified from the activated carbon, and can be concentrated by treatment of the activated carbon with an oxidizing agent.
Also provided is a method for producing a nanodiamond, and particularly a nanodiamond fiber, by mixing a carbon source, a metal and an acid under conditions which result in nanodiamond formation. Nanodiamond fibers up to 2000 nanometers or more can be produced. The nanodia-mond fibers can be woven or used to provide structural reinforcement for various materials. |
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