Flame synthesis of carbon nanotubes and few-layer graphene on metal-oxide spinel powders

Multi-walled and single-walled carbon nanotubes (CNTs) and few-layer graphene (FLG) are grown directly on spinel powders using flame synthesis. CNT and FLG growth occurs via the decomposition of flame-generated carbon precursors (e.g., CO, C2H2, and CH4) over nanoparticles (i.e., Ni, Co, Fe, and Cu)...

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Published inCarbon (New York) Vol. 63; pp. 478 - 486
Main Authors Memon, Nasir K., Xu, Fusheng, Sun, Geliang, Dunham, Sage J.B., Kear, Bernard H., Tse, Stephen D.
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier Ltd 01.11.2013
Elsevier
Subjects
Carbon
Carbon nanotubes
Counterflow
Cross-disciplinary physics: materials science; rheology
Diffraction
Exact sciences and technology
Graphene
Materials science
Nanoscale materials and structures: fabrication and characterization
Nanotubes
Nickel
Physics
Spinel
Synthesis
Flames
Powders
Synthesis
Spinel
Graphene
Spinels
Carbon nanotubes
Oxides
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Summary:Multi-walled and single-walled carbon nanotubes (CNTs) and few-layer graphene (FLG) are grown directly on spinel powders using flame synthesis. CNT and FLG growth occurs via the decomposition of flame-generated carbon precursors (e.g., CO, C2H2, and CH4) over nanoparticles (i.e., Ni, Co, Fe, and Cu) reduced from the solid oxide. The growth of CNTs is investigated on NiAl2O4, CoAl2O4, and ZnFe2O4, using counterflow diffusion flame and multiple inverse-diffusion flames (m-IDFs), while the growth of FLG is investigated on CuFe2O4 using m-IDFs. As shown by analytical electron microscopy techniques, Raman spectroscopy, and X-ray diffraction, substrate temperature and spinel composition play critical roles in the growth of both CNTs and FLG.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2013.07.023