TY - GEN
T1 - Flame synthesis of carbon nanotubes over reduced metal- oxides
AU - Xu, Fusheng
AU - Sun, Geliang
AU - Tse, Stephen D.
PY - 2007
Y1 - 2007
N2 - Multi-walled and single-walled carbon nanotubes (MWNTs and SWNTs) are grown directly on spinel solid solutions (i.e. NiAl2O4, CoAl2O4 and ZnFe2O4) in a methane/air counterflow diffusion flame. Carbon nanotube (CNT) growth occurs through decomposition of flamegenerated carbon precursors (e.g. CO and C2H2) over catalyst nanoparticles (i.e. Ni, Co, and Fe) reduced from the solid oxide. CNT growth characteristics are investigated as functions of spinel composition, local gas-phase temperatures, C-related species concentrations, and sampling positions. CNTs grown from ZnFe2O4 are found to be over 50% in SWNT content. Speciallystructured CNTs such as regularly-coiled, large-bending, and Y-junction nanotubes are observed.
AB - Multi-walled and single-walled carbon nanotubes (MWNTs and SWNTs) are grown directly on spinel solid solutions (i.e. NiAl2O4, CoAl2O4 and ZnFe2O4) in a methane/air counterflow diffusion flame. Carbon nanotube (CNT) growth occurs through decomposition of flamegenerated carbon precursors (e.g. CO and C2H2) over catalyst nanoparticles (i.e. Ni, Co, and Fe) reduced from the solid oxide. CNT growth characteristics are investigated as functions of spinel composition, local gas-phase temperatures, C-related species concentrations, and sampling positions. CNTs grown from ZnFe2O4 are found to be over 50% in SWNT content. Speciallystructured CNTs such as regularly-coiled, large-bending, and Y-junction nanotubes are observed.
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M3 - Conference contribution
AN - SCOPUS:84943575439
T3 - 5th US Combustion Meeting 2007
SP - 386
EP - 394
BT - 5th US Combustion Meeting 2007
PB - Combustion Institute
T2 - 5th US Combustion Meeting 2007
Y2 - 25 March 2007 through 28 March 2007
ER -