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Volume 4 Nano Research & Applications
ISSN: 2471-9838
Notes:
JOINT EVENT
October 04-05, 2018 Moscow, Russia
&
2nd Edition of International Conference on
26th International Conference on Advanced Nanotechnology
Materials Technology and Manufacturing Innovations
Advanced Nanotechnology 2018
& Materials-Manufacturing 2018
October 04-05, 2018 Page 46
Single-walled carbon nanotube synthesis by alcohol catalytic chemical vapour deposition in high
vacuum using platinum-group metal catalysts
For the realization of application of single-walled carbon nanotubes (SWCNTs) to electronics devices, control of
chirality and reduction of growth temperature have been significant issues. At present, 3d transition metals, such
as Fe, Co and Ni, are widely used as catalysts for SWCNT growth in chemical vapour deposition (CVD). However, due
to Ostwald ripening, these catalysts are apt to aggregate at the growth temperature, resulting in enlargement of both
diameter and chirality distribution of SWCNTs. We performed SWCNT growth by a gas source-type alcohol catalytic
CVD system using platinum-group metal catalysts (Ru, Rh, Pd and Pt). By optimizing the ethanol gas supply using a
CVD system in a high vacuum, SWCNTs were grown from these metals between 400 and 700ºC. In particular, SWCNTs
were grown from Rh catalysts even below 300ºC. Irrespective of catalyst metals, the diameter and chirality distribution
of grown SWCNTs became narrower, as the growth temperature decreased. The diameters of most SWCNTs grown from
Pt catalysts were below 1 nm, having a narrow chirality distribution. We demonstrated that the platinum-group metal
catalysts are effective for both low temperature growth and narrow chirality distribution. Based on the SWCNT diameter
and catalyst particle size, we discuss the growth mechanism of SWCNTs from the platinum-group metal catalysts.
Biography
Takahiro Maruyama is a Professor in the Department of Applied Chemistry at Meijo University, Nagoya, Japan. He has completed his Graduation in Factory
of Science at Kyoto University; PhD at Kyoto University and; Postdoctoral studies at University of Tsukuba and Ritsumeikan University. He is the Director of
Nanomaterials Research Center at Meijo University. He has published more than 100 papers in peer-reviewed international journals and has been serving
as an Editorial Board Member of GCET.
Takahiro Maruyama
Meijo University, Japan
Takahiro Maruyama, Nano Res Appl 2018, Volume 4
DOI: 10.21767/2471-9838-C5-019