A Perfect Carbon Nanotube with Two Closed Ends
A perfect carbon nanotube with two closed ends consisting of graphitized carbon was experimentally observed. The large carbon nanotube, with a diameter of 187 nm and a length of 1.2 m, was synthesized by pyrolysis of iron(II)phthalocyanine (FePc) under an Ar/NH3 flow at 900 °C on a nickel substrate. The structure and composition of the nanotube were determined by high-resolution transmission electron microscopy and electron energy loss spectroscopy. The carbon nanotube seems to grow spontaneously by some autocatalytic process.
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Document Type: Communications
Affiliations: Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
Publication date: 2002-02-01
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