Bulk production of quasi-aligned carbon nanotube bundles by the catalytic chemical vapour deposition (CCVD) method

Mukhopadhyay, Kingsuk; Koshio, Akira; Sugai, Toshiki; Tanaka, Nobuo; Shinohara, Hisanori; Kónya, Zoltán; Nagy, J.B.

doi:10.1016/s0009-2614(99)00202-x

Cited by 162 publications

(87 citation statements)

References 14 publications

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“…Catalytic powder was prepared by impregnating USY-zeolite powder (HSZ-390HUA over 99 % SiO 2 ) with iron acetate (CH 3 CO 2 ) 2 Fe and cobalt acetate (CH 3 CO 2 ) 2 Co-4H 2 O [24,25]. The weight concentrations of Fe and Co were chosen to be 2.5 wt % each over the catalytic powder.…”

Section: Preparations and Experimentsmentioning

confidence: 99%

Cold wall CVD generation of single-walled carbon nanotubes and in situ Raman scattering measurements of the growth stage

Chiashi

Murakami

Miyauchi

et al. 2004

Chemical Physics Letters

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Catalytic CVD generation of high-purity single-walled carbon nanotubes (SWNTs) without use of an electric furnace or a hot-filament is demonstrated. High-purity SWNTs were generated from alcohol used as a carbon source with Fe/Co particles supported on zeolite by Joule-heating of a silicon base plate. This technique was applied for an in situ measurement of Raman scattering during the growth stage in a vacuum chamber equipped with an SPM/Raman detector. The surface temperature was measured by a systematic shift in the silicon signal and kept at 850 °C. The G-band intensity of the SWNT Raman spectrum increased nearly linearly with time in the growth stage after an initial rapid increase. IntroductionThe discovery of single-walled carbon nanotubes (SWNTs) [1] has invoked numerous research interests because of their unique physical properties [2] and hence remarkable potential as a new material for various applications. The generation technique of SWNTs has since been developed by demands for specimens with sufficient amount and quality. Followed by the landmark establishment of the synthesis method in macroscopic amounts by laser-furnace [3] and arc-discharge [4] methods, several techniques employing the CVD approach [5-13] have been proposed for improved efficiency or productivity in the bulk synthesis of SWNTs. At present, CVD approaches, including the high-pressure CO (HiPco) technique [6,7], have become dominant for the mass production of SWNTs.As a new approach for higher-purity and lower-temperature generation, we have proposed the use of alcohol, particularly ethanol and methanol, for the carbon feedstock [14,15]. The proposed alcohol catalytic CVD (ACCVD) method can produce high-quality SWNTs when combined with appropriate catalysts and experimental procedures. Furthermore, it was recently demonstrated that high-quality SWNTs could be synthesized on a mesoporous-silica coated substrate [16] or directly on a solid substrate such as silicon or quartz [17,18]. Detailed comparisons of HiPco and ACCVD products are found in our recent papers [19,20], and the generation mechanism is discussed based on molecular

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Section: Preparations and Experimentsmentioning

confidence: 99%

Cold wall CVD generation of single-walled carbon nanotubes and in situ Raman scattering measurements of the growth stage

Chiashi

Murakami

Miyauchi

et al. 2004

Chemical Physics Letters

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“…The catalyst powder can be prepared using impregnation of Co and Fe. The preparing process followed our previous report [8,19], which was developed from the procedure originally presented by Shinohara's group [32,33]. powder was ground into fine powder by a mortar and stored in oven at 80°C for future use.…”

Section: An Impregnation Methodsmentioning

confidence: 99%

Resonance R aman Spectroscopy

2005

Encyclopedia of Inorganic Chemistry

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“…The sample was collected as black powder from the quartz boat. In this way, nanotubes were obtained in gram quantity [32][33][34][35] .…”

Section: National Scenariomentioning

confidence: 99%

Carbon Nanotubes and Related Structures

Mukhopadhyay¹,

Ram²,

Rao³

2008

DSJ

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Carbon nanotubes have attracted the fancy of many scientists worldwide. The small dimensions, strength, and the remarkable physical properties of these structures make them a unique material with a whole range of promising applications. In this review, the structural aspects, the advantages and disadvantages of different for their procedures synthesis, the qualitative and quantitative estimation of carbon nanotubes by different analytical techniques, the present status on their applications as well as the current challenges faced in the application field, national, in particular DRDODMSRDE status, and interest in this field, have been discussed.

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Bulk production of quasi-aligned carbon nanotube bundles by the catalytic chemical vapour deposition (CCVD) method

Cited by 162 publications

References 14 publications

Cold wall CVD generation of single-walled carbon nanotubes and in situ Raman scattering measurements of the growth stage

Cold wall CVD generation of single-walled carbon nanotubes and in situ Raman scattering measurements of the growth stage

Resonance R aman Spectroscopy

Carbon Nanotubes and Related Structures

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