Low Temperature Growth of Carbon Nanotube Forests Consisting of Tubes with Narrow Inner Spacing Using Co/Al/Mo Catalyst on Conductive Supports
Robertson, Alex W
ACS Applied Materials & Interfaces
American Chemical Society
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Sugime, H., Esconjauregui, S., D’Arsié, L., Yang, J., Robertson, A. W., Oliver, R., Bhardwaj, S., et al. (2015). Low Temperature Growth of Carbon Nanotube Forests Consisting of Tubes with Narrow Inner Spacing Using Co/Al/Mo Catalyst on Conductive Supports. ACS Applied Materials & Interfaces, 7 16819-16827. https://doi.org/10.1021/acsami.5b04846
We grow carbon nanotube forests at 450 °C on conductive Cu support with tubes exhibiting extremely narrow inner spacing using Co/Al/Mo multilayer catalyst system. The forests average ~300 nm in height and a mass density of 1.2 g cm-3. As a barrier layer for the diffusion of Co, the thin Al layer with the thickness of 0.5 nm plays an important role in the growth of dense CNT forests, partially preventing the Co-Mo interaction. Ohmic conduction is confirmed between the forest and Cu support with the resistance of 35 ± 26 kΩ (mean ± standard deviation). The forest shows a high thermal effusivity of 1840 J m-2 s-0.5 K-1, and a thermal conductivity of 4.0 J s-1 m-1 K-1, suggesting that these forests are potentially useful for heat dissipation devices.
chemical vapor deposition, low-temperature growth, thermal effusivity, thermal conductivity, sputtering, cocatalyst, catalyst nanoparticles
This work has been funded by the European projects Technotubes and Grafol. H.S. acknowledges a research fellowship from the Japanese Society for the Promotion of Science (JSPS).
European Research Council (279361)
External DOI: https://doi.org/10.1021/acsami.5b04846
This record's URL: https://www.repository.cam.ac.uk/handle/1810/253672