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Purification and opening of carbon nanotubes via bromination
Author(s) -
Chen Yao K.,
Green Malcolm L. H.,
Griffin Julian L.,
Hammer Jens,
Lago Rachel M.,
Tsang Shik C.
Publication year - 1996
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.19960081216
Subject(s) - carbon nanotube , materials science , bromine , x ray photoelectron spectroscopy , transmission electron microscopy , chemical engineering , nanoparticle , carbon fibers , halogenation , nanotechnology , organic chemistry , chemistry , composite material , metallurgy , composite number , engineering
The purification and opening of carbon nanotubes via bromination is reported. Refluxing raw cathodic soot containing a mixture of nanotubes, nanoparticles, and amorphous carbon in liquid bromine, followed by oxidation in air, is shown to yield 10–20; w/w pure and opened nanotubes. The role of bromine in the purification steps is discussed, based on the results of transmission electron microscopy, temperature programmed oxidation, X‐ray diffraction, and X‐ray photoelectron spectroscopy investigations.