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Synthesis and characterization of γ‐Al 2 O 3 nanorods
Author(s) -
Li W. F.,
Ma X. L.,
Zhang W. S.,
Zhang W.,
Li Y.,
Zhang Z. D.
Publication year - 2006
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200521409
Subject(s) - nanorod , nucleation , crystal twinning , materials science , transmission electron microscopy , electric arc , nanotechnology , characterization (materials science) , chemical engineering , chemistry , microstructure , metallurgy , organic chemistry , electrode , engineering
One‐dimensional nanorods of cubic aluminum oxide (γ‐Al 2 O 3 ) have been synthesized by DC electric arc discharge of Fe and Al powders. It is seen that the diameters of the γ‐Al 2 O 3 nanorods are relatively uniform, ranging from 20 to 30 nm. On the basis of detailed transmission electron microscopic observation, it is proposed that the growth of a γ‐Al 2 O 3 nanorod follows the vapor–liquid–solid (VLS) process assisted by a two‐dimensional vapor–solid (VS) nucleation and growth mechanism. The features of heavy twinning in the nanorod imply that twins might contribute to the growth of the nanorod and serve as the nucleus of the nanorod. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)