Flame synthesis of carbon nanotubes over reduced metal- oxides

Fusheng Xu, Geliang Sun, Stephen D. Tse

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publication5th US Combustion Meeting 2007
PublisherCombustion Institute
Pages386-394
Number of pages9
ISBN (Electronic)9781604238112
StatePublished - Jan 1 2007
Event5th US Combustion Meeting 2007 - San Diego, United States
Duration: Mar 25 2007Mar 28 2007

Publication series

Name5th US Combustion Meeting 2007
Volume1

Other

Other5th US Combustion Meeting 2007
CountryUnited States
CitySan Diego
Period3/25/073/28/07

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Mechanical Engineering

Cite this

Xu, F., Sun, G., & Tse, S. D. (2007). Flame synthesis of carbon nanotubes over reduced metal- oxides. In 5th US Combustion Meeting 2007 (pp. 386-394). (5th US Combustion Meeting 2007; Vol. 1). Combustion Institute.