Low-temperature growth of single-walled carbon nanotube using Al2O3/Pd/Al2O3 multilayer catalyst by alcohol gas source method at high vacuum

Low-temperature growth of single-walled carbon nanotube using Al2O3/Pd/Al2O3 multilayer catalyst by alcohol gas source method at high vacuum

We carried out single-walled carbon nanotube (SWCNT) growth at 500 and 600 °C using Al2O3/Pd/Al2O3 multilayer catalysts on SiO2/Si substrates by the alcohol gas source method. When the ethanol pressures were 1 × 10−4 and 1 × 10−3 Pa, radial-breathing-mode (RBM) peaks and sharp G band peaks appeared...

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Veröffentlicht in:Japanese Journal of Applied Physics 2016-05, Vol.55 (6S1)
Hauptverfasser: Kiribayashi, Hoshimitsu, Ogawa, Seigo, Kozawa, Akinari, Saida, Takahiro, Naritsuka, Shigeya, Maruyama, Takahiro
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container_issue 6S1
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container_title Japanese Journal of Applied Physics
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creator Kiribayashi, Hoshimitsu
Ogawa, Seigo
Kozawa, Akinari
Saida, Takahiro
Naritsuka, Shigeya
Maruyama, Takahiro
description We carried out single-walled carbon nanotube (SWCNT) growth at 500 and 600 °C using Al2O3/Pd/Al2O3 multilayer catalysts on SiO2/Si substrates by the alcohol gas source method. When the ethanol pressures were 1 × 10−4 and 1 × 10−3 Pa, radial-breathing-mode (RBM) peaks and sharp G band peaks appeared in Raman spectra, indicating the growth of SWCNTs even at 500 °C. When the growth temperature and ethanol pressure were 500 °C and 1 × 10−4 Pa, respectively, the growth rate decreased gradually with the growth time, but the SWCNT growth continued for more than 4 h and the diameter distribution changed as the growth proceeded. X-ray photoelectron spectroscopy measurements showed that oxidized Pd catalyst particles were reduced to metallic states after the SWCNT growth started.
doi_str_mv 10.7567/JJAP.55.06GF04
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title Low-temperature growth of single-walled carbon nanotube using Al2O3/Pd/Al2O3 multilayer catalyst by alcohol gas source method at high vacuum
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