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Abstract |
Nano-size Ni particles prepared by laser ablation in water were used as catalyst for synthesizing carbon nanotubes by a thermal CVD method. The width of synthesized CNT was almost the same as the size... of the Ni particles. It was found that hydrogen-reduction treatment of the Ni particles was necessary to obtain nanotubes, suggesting that surface of the colloidal particles were oxidized in the laser ablation process.show more
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