Formation of Y-junction carbon nanotubes by catalytic CVD of methane |
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Authors: | Siang-Piao Chai |
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Affiliation: | School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, 14300 Nibong Tebal, SPS Pulau Pinang, Malaysia |
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Abstract: | Y-junction carbon nanotubes were grown by catalytic CVD of methane at 700 °C on NiO-CuO-MoO(7:2:1) (w/w/w)/SiO2 catalyst. For comparison, NiO-CuO(8:2) (w/w)/SiO2 and NiO-MoO(8:2) (w/w)/SiO2 catalysts were tested for carbon nanotube formation. TEM analysis indicates that no Y-junction structures were formed with the latter two catalysts. This finding elucidates why the addition of a small amount of MoO to NiO-CuO/SiO2 catalyst is crucial for enhancing the formation of Y-junction carbon nanotubes. |
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Keywords: | 81.07.De 61.46.Fg 81.16.Hc |
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