Catalytic growth of carbon nanotubes from the internal surface of Fe-loading mesoporous molecular sieves materials

Catalytic formation of carbon nanotubes on Fe-loading hexagonal mesoporous molecular sieve Fe/SiHMS and microporous molecular sieve Fe/NaY has been investigated. TEM pictures, together with the different porous properties of SiHMS and NaY, show us that the carbon nanotubes probably grow inside the c...

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Bibliographic Details
Published in:Materials chemistry and physics 2001-03, Vol.69 (1), p.246-251
Main Authors: Duxiao, Jiang, Nongyue, He, Yuanying, Zhang, Chunxiang, Xu, Chunwei, Yuan, Zuhong, Lu
Format: Article
Language:English
Subjects:
Catalytic formation of carbon nanotubes
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Mesoporous molecular sieves materials
Nanoscale materials and structures: fabrication and characterization
Physics
X-ray photoelectron spectroscopy
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Summary:Catalytic formation of carbon nanotubes on Fe-loading hexagonal mesoporous molecular sieve Fe/SiHMS and microporous molecular sieve Fe/NaY has been investigated. TEM pictures, together with the different porous properties of SiHMS and NaY, show us that the carbon nanotubes probably grow inside the channels of Fe/SiHMS and on the external surface of Fe/NaY. The Fe(2p) binding energy (BE) suggests a stronger interaction between SiHMS and the deposited iron oxide species than that between NaY and iron species. The BE of Si, O and Fe elements for Fe/SiHMS vary much before and after the catalytic synthesis of carbon nanotubes, whereas the BE for NaY changes little. The above XPS information can serve as a supplement to TEM analysis.
ISSN:0254-0584
1879-3312
DOI:10.1016/S0254-0584(00)00465-X