Supramolecular catalysts for the gas-phase synthesis of single-walled carbon nanotubes

Article Abstract:

Reversed micelles containing metallic ions are used as precursors of novel catalysts for the gas-phase synthesis of single-walled carbon nanotubes (SWNTs) and the results of screening study on catalytic behavior of Fe-Mo binary catalysts are reported. The results suggested that the catalytic ability is closely related to the strain of the crystal structure of Fe-Mo catalysts formed in the reaction and/or the phase transition caused by dissolution of the Mo atoms.

Micelles, Metal ions, Atomic properties

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Selective matching of catalyst element and carbon source in single-walled carbon nanotube synthesis on silicon substrates

Article Abstract:

The compatibility of various catalysts for ethylene and ethanol chemical vapor deposition (CVD) syntheses of single-walled carbon nanotubes (SWNTs) on Si substrates is studied. A strong selectivity between the catalyst elemental species and carbon source is found and SWNT yield for Fe(Co) catalysts is much higher for ethylene (ethanol) CVD than for ethanol (ethylene) CVD.

Japan, All Other Basic Inorganic Chemical Manufacturing, Industrial organic chemicals, not elsewhere classified, Ethanol, Ethyl Alcohol Manufacturing, Silicon & Inorganic Compounds, Observations, Alcohol, Chemical vapor deposition, Silicon compounds, Alcohol, Denatured, Chemical vapour deposition

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Size control of metal nanoparticle catalysts for the gas-phase synthesis of single-walled carbon nanotubes

Article Abstract:

Size-controlled Co, Co-Mo, and Fe-Mo nanoparticles is prepared by the reversed micelle method as the catalysts for the gas-phase pyrolytic synthesis of single-walled carbon nanotubes (SWCNTs). Findings reveal that the alkyl groups of the surfactants play a role in controlling the sizes of the nanoparticles.

Alkyl groups

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