SURFACE-MODIFIED CARBON NANOTUBE AND PRODUCTION METHOD THEREOF
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United States of America Patent
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Issued Date -
Aug 25, 2011
app pub date -
Oct 22, 2010
filing date -
Oct 23, 2009
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Abandoned
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Abstract
A carbon nanotube (CNT) is provided having micropores with a diameter of 1 to 10 nm in the side wall and in turn, having a large specific surface area. A production method of a surface-modified CNT (DMWCNT), comprises heating CNT having supported on the surface thereof a metal oxide or metal nitrate fine particle at a temperature of 100 to 1000° C., such as, 200 to 500° C., in an atmosphere containing oxygen. A cyclical solid phase oxidation-reduction reaction between the metal oxide and CNT occurs on the surface of the metal oxide fine particle supported on CNT, and carbon of CNT is oxidized to open a micropore. The metal oxide is preferably cobalt oxide, and the metal nitrate is preferably cobalt nitrate.
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