TY - JOUR
T1 - Purification and characterization of zeolite-supported single-walled carbon nanotubes catalytically synthesized from ethanol
AU - Igarashi, Hideyuki
AU - Murakami, Hiroto
AU - Murakami, Yoichi
AU - Maruyama, Shigeo
AU - Nakashima, Naotoshi
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2004/7/11
Y1 - 2004/7/11
N2 - Nearly complete removal of zeolite particles and Fe/Co catalysts from raw single-walled carbon nanotubes (SWNTs) produced by chemical vapor deposition was achieved by oxidation of raw material at 240°C or 340°C and treatment with 1% aqueous solution of hydrofluoric acid. The yields of SWNTs were estimated to be ≈95% and the purities of SWNTs thus obtained were more than 95%, as characterized by thermo-gravimetric analysis. Raman spectra of the purified SWNTs were essentially identical with those of the corresponding raw samples. The raw and purified SWNTs were also characterized by EDX spectroscopy and transmission electron microscopy.
AB - Nearly complete removal of zeolite particles and Fe/Co catalysts from raw single-walled carbon nanotubes (SWNTs) produced by chemical vapor deposition was achieved by oxidation of raw material at 240°C or 340°C and treatment with 1% aqueous solution of hydrofluoric acid. The yields of SWNTs were estimated to be ≈95% and the purities of SWNTs thus obtained were more than 95%, as characterized by thermo-gravimetric analysis. Raman spectra of the purified SWNTs were essentially identical with those of the corresponding raw samples. The raw and purified SWNTs were also characterized by EDX spectroscopy and transmission electron microscopy.
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U2 - 10.1016/j.cplett.2004.05.104
DO - 10.1016/j.cplett.2004.05.104
M3 - Article
AN - SCOPUS:3042581959
VL - 392
SP - 529
EP - 532
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 4-6
ER -