Large-scale preparation of aluminum borate-coated aluminum oxide nanowires

Single-crystal and uniform aluminum borate (Al 4B 2O 9)-coated aluminum oxide nanowires have been synthesized in high purity and in large yield via a reaction of metal aluminum with boron oxide in the presence of carbon nanotubes (CNTs). The aluminum oxide nanowires exhibit a well-crystallized one-d...

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Bibliographic Details
Published in:Journal of solid state chemistry 2005-07, Vol.178 (7), p.2262-2266
Main Authors: Zhang, J., Huang, Y., Lin, J., Ding, X.X., Tang, C., Qi, S.R.
Format: Article
Language:English
Subjects:
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
Aluminum borate
Aluminum oxide
BORATES
BORON OXIDES
CARBON
Carbon nanotubes
CERAMICS
Cross-disciplinary physics: materials science
rheology
CRYSTAL GROWTH
Epitaxial growth
EPITAXY
Exact sciences and technology
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
Materials science
MONOCRYSTALS
NANOTUBES
Physics
QUANTUM WIRES
Stacking faults
THICKNESS
WIRES
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Summary:Single-crystal and uniform aluminum borate (Al 4B 2O 9)-coated aluminum oxide nanowires have been synthesized in high purity and in large yield via a reaction of metal aluminum with boron oxide in the presence of carbon nanotubes (CNTs). The aluminum oxide nanowires exhibit a well-crystallized one-dimensional structure with diameters ranging from 50 to 70 nm, and the Al 4B 2O 9 have a coating thickness of about 1–5 nm. CNTs play a crucial role in the formation of the important ceramic nanowires, by providing a platform to grow the composite structure. The growth mechanism was proposed by the detailed microscopy observations. Aluminum borate (Al 4B 2O 9)-coated aluminum oxide nanowires have been synthesized in high purity and in large yield via a reaction of metal aluminum with boron oxide in the presence of carbon nanotubes (CNTs). The reaction took place on the surface of the CNTs. The carbon nanotubes not only acted as a template, but also reacted with B 2O 3 to reduce the formation of the glassy B 2O 3.
ISSN:0022-4596
1095-726X
DOI:10.1016/j.jssc.2005.05.004