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Acid treatment of carbon nanofibres with encapsulated catalytic iron nanoparticles
Author(s) -
Wu P.,
Deng S. Z.,
Chen Jun,
She J. C.,
Xu N. S.
Publication year - 2004
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.1727
Subject(s) - nanoparticle , transmission electron microscopy , carbon fibers , catalysis , scanning electron microscope , etching (microfabrication) , thermal treatment , materials science , chemical engineering , nanotechnology , chemical vapor deposition , chemistry , composite material , organic chemistry , composite number , layer (electronics) , engineering
Acid treatment was used to remove the Fe nanoparticles encapsulated in the carbon nanofibres grown by thermal chemical vapour deposition. Transmission electron microscopy was used to determine the structure of the carbon nanofibres. Field emission scanning electron microscopy and x‐ray energy‐dispersive spectroscopy were employed to analyse the effect of the treatment. It was found that treatment with HCl can partially remove the Fe nanoparticles on tips. Treatment using a mixture of HNO 3 and H 2 SO 4 is an effective way to remove the Fe nanoparticles on tips. Also, the tips of carbon nanofibres having Fe nanoparticles seem to be more stable against O 2 plasma etching than the bodies of the carbon nanofibres. Copyright © 2004 John Wiley & Sons, Ltd.