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Journal of Inorganic Materials

Journal of Inorganic Materials >

2008 , Vol. 23 >Issue 1: 121 - 124

DOI: https://doi.org/10.3724/SP.J.1077.2008.00121

Research Paper

Hydrothermal Synthesis and Thermal Decomposing Method for Synthesizing Alumina Nanorods

  • LI Yu-Chu M ,
  • HUANG Chao-Ming ,
  • WANG Sheng-Chang ,
  • WANG Jian-Xun
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  • 1. Institute of Mechatronic Science and Technology, Southern Taiwan University of Technology, Tainan 710, China; 2. Department of Environmental Engineering, Kun-Shan University, Tainan 710, China

Received date: 2007-02-01

  Revised date: 2007-04-17

  Online published: 2008-01-20

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Abstract

Alumina nanorods were successfully prepared from the thermal decomposition of Al(OH)3·xH2O nano precursors obtained hydrothermally at 120℃ for 10--17d, by using Al(OH)3 and LiOH as raw materials. The as-prepared samples were characterized by TEM, HRTEM, SAED and XRD. Besides, the thermal behavior of decomposing Al(OH)3·xH2O precursors synthesized by hydrothermal process was studied through TGA. The results show that the as-prepared Al2O3 nanorods have rod-like morphology and single crystalline nature. The mechanism for the Al2O3 nanorods growth is agreed to Ostwald ripening and oriented attachment. Lye plays an important role in synthesizing the Al2O3 nanorods. As 5mol/L KOH lye displaces original LiOH, the
as-prepared nanowires in the reaction have smaller morphology, with a diameter of 2nm and a length of 10--25nm.

Key words： Al2O3; nanorods; hydrothermal synthesis; thermal decomposition

Cite this article

LI Yu-Chu M , HUANG Chao-Ming , WANG Sheng-Chang , WANG Jian-Xun . Hydrothermal Synthesis and Thermal Decomposing Method for Synthesizing Alumina Nanorods[J]. Journal of Inorganic Materials, 2008 , 23(1) : 121 -124 . DOI: 10.3724/SP.J.1077.2008.00121

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