Growth conditions of double-walled carbon nanotubes in arch discharge

Article Abstract:

The synthesis of double-walled carbon nanotubes (DWCNTs) by using electric arch discharge is done. The result showed that in optimal conditions the double-walled carbon nanotubes (DCWNTs) occupied more than 90% of the synthesized nanotubes, though trace amounts of single-walled nanotubes were also formed.

Analysis, Electric arc, Electric arcs

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Improvement of Fe/MgO catalysts by calcination for the growth of single- and double-walled carbon nanotubes

Article Abstract:

Impregnation is used for the calcination of a Fe/MgO catalyst to result in a solid solution with the growth of single- and double-walled carbon nanotubes. The formation of iron layers on the catalyst surface is caused due to the hydrogen reduction resulting in a high yield of impurity-free nanotubes.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Magnesium Oxide, Structure

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Chemical vapor depositions of single-walled carbon nanotubes catalyzed by uniform Fe(sub 2)O(sub 3) nanoclusters synthesized using diblock copolymer micelles

Article Abstract:

Single-walled carbon nanotypes (SWNTs) are grown by chemical vapor deposition by using nanoclusters as the catalysts. The conclusion states that the electrical measurement SWNT mats contained both semi conducting and metallic SWNTs and can be used to build thin film transistors.

Science & research, Research, Chemical synthesis

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