Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9566896 | Applied Surface Science | 2005 | 7 Pages |
Abstract
Carbon nanotubes have been prepared by the catalytic decomposition of acetylene over Ni/Cr hydrotalcite-type anionic clay catalyst. Ni/Cr hydrotalcite-type anionic clay precursors have been prepared by co-precipitation technique. The role of stability of Ni nanoparticles obtained in situ from the decomposition of the catalyst on the growth of MWNTs is discussed. The as-synthesized and purified carbon nanotubes are characterized by thermogravimetry, IR spectroscopy, X-ray diffraction, BET analysis, scanning electron microscopy, transmission electron microscopy and Raman spectroscopy measurements. The hydrogen adsorption capacity of as-synthesized and purified multiwalled carbon nanotubes at 298Â K has been obtained using a high-pressure hydrogen adsorption set-up and the results are discussed.
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Authors
M.M. Shaijumon, N. Bejoy, S. Ramaprabhu,