Two distinct types of carbon nanotubes were synthesized within a flame environment. In the first system, flame synthesis of single-walled carbon nanotubes (SWNT) was presented using Fe nanoparticles (introduced by thermal decomposition of an iron precursor compound) within a pyrolysis flame configuration. The preferential reactivity of the catalyst particle towards CO and not towards C2H2 was understood as reflecting nanoparticle restructuring, interactions between coadsorbates and reactant pyrolysis products. Iron exhibited preferential reactivity towards CO for SWNT catalysis with this reactivity being strongly dependent upon catalyst particle size within flame conditions. In the second system, flame synthesis of Ni catalyzed multi-walled carbon nanotubes was presented. Ni nanoparticles showed a high preferential reactivity towards C2H2 to form nanofibers. Original is an abstract.
|Number of pages
|Published - Dec 1 2002
|29th International Symposium on Combustion - Sapporo, Japan
Duration: Jul 21 2002 → Jul 26 2002
|29th International Symposium on Combustion
|7/21/02 → 7/26/02
All Science Journal Classification (ASJC) codes