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Catalytic growth of 0.4 nm single‐walled carbon nanotubes aligned inside porous zeolite crystals
Author(s) -
Zhai J. P.,
Tang Z. K.,
Hu X. J.,
Zhang X. X.,
Sheng P.
Publication year - 2006
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200669101
Subject(s) - carbon nanotube , carbonization , zeolite , catalysis , thermogravimetry , fourier transform infrared spectroscopy , materials science , molecule , chemical engineering , porosity , carbon fibers , infrared spectroscopy , nanotechnology , chemistry , scanning electron microscope , organic chemistry , composite material , composite number , engineering
Abstract We report our recent study on processes of decomposition of tripropylamine (TPA) molecules in the channels of AlPO 4 ‐5 (AFI) and Co‐incorporated AlPO 4 ‐5 (CoAPO‐5) zeolite crystals, by means of Fourier transform Infrared (FTIR) spectra and thermogravimetry (TG) techniques. In comparison with pure AlPO 4 ‐5 crystals, the carbonization temperature of TPA molecules inside the channels of Co‐AFI crystals is notably decreased; indicating that Co atoms incorporated in the AFI framework plays an important catalyst role. These incorporated Co atoms are also favorable to the formation of the 0.4 nm single‐walled carbon nanotubes (SWNTs) in the channels, characterized by a significant decrease in nanotubes formation energy. The resulting SWNTs have higher filling density in the channels than that fabricated without catalyst Co. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)