Influence of ferrocene/benzene mole ratio on the synthesis of carbon nanostructures

The carbon nanostructures, including single-walled carbon nanotubes (SWNTs), multi-walled carbon nanotubes (MWNTs) and carbon nanofibers (CNFs) were synthesized by a floating catalyst method. Carbon nanotubes (CNTs) and CNFs in different diameters and structures can be obtained by controlling the fe...

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Bibliographic Details
Published inChemical physics letters Vol. 376; no. 1; pp. 83 - 89
Main Authors Bai, Shuo, Li, Feng, Yang, QuanHong, Cheng, Hui-Ming, Bai, JinBo
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 17.07.2003
Elsevier Science
Subjects
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
Materials science
Nanoscale materials and structures: fabrication and characterization
Physics
Scanning electron microscopy
Raman spectra
Catalytic reaction
Carbon nanotubes
Experimental study
High-resolution methods
Ferrocene
Transmission electron microscopy
Benzene
Chemical decomposition
Chemical synthesis
Nanofibers
Nanostructured materials
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Summary:The carbon nanostructures, including single-walled carbon nanotubes (SWNTs), multi-walled carbon nanotubes (MWNTs) and carbon nanofibers (CNFs) were synthesized by a floating catalyst method. Carbon nanotubes (CNTs) and CNFs in different diameters and structures can be obtained by controlling the ferrocene (catalyst precursor)/benzene (carbon source) mole ratio. The diameter of CNFs and CNTs increases while ferrocene/benzene mole ratio decreases. The general tendency is: (a) SWNTs can be synthesized when ferrocene/benzene mole ratio is around or above 15.1%. (b) MWNTs can be produced when ferrocene/benzene mole ratio is between 4.2% and 8.76%. (c) CNFs can be synthesized when ferrocene/benzene is below 4.2%.
ISSN:0009-2614
1873-4448
DOI:10.1016/S0009-2614(03)00959-X