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Effects of solvents and Sb sources on the morphologies of LaFe3CoSb12 nanopowders made by the hydro/solvo thermal method

Published online by Cambridge University Press:  31 January 2011

Pengxian Lu ,
Zigang Shen  and
Xing Hu
Pengxian Lu
Affiliation:
School of Physical Engineering and Material Physics Laboratory, Zhengzhou University, Zhengzhou 450045, People's Republic of China; and College of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450007, People's Republic of China
Xing Hu*
Affiliation:
School of Physical Engineering and Material Physics Laboratory, Zhengzhou University, Zhengzhou 450045, People's Republic of China
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

The thermoelectric LaFe3CoSb12 nanopowders were synthesized by the hydro/solvo thermal method. The effects of different solvents were investigated by using only the potassium antimony tartrate as Sb source. Also, the effects of the different Sb sources were investigated by using only water as solvent on the morphologies of the resulting nanopowders. The results show that a mixture of nanoparticles and nanorods can be obtained in aqueous solution of cetyltrimethylammonium bromide or ethylenediamine-tetra-acetic disodium salt. In ethylenediamine only nanorods can be obtained, and in ethylene glycol only nanoparticles can be obtained. The other morphologies of the LaFe3CoSb12, such as particle-like, nest-shaped, branch-shaped, or feather-like crystalline, can be synthesized in water by selecting a suitable Sb source.

Keywords

HydrothermalNanostructureThermoelectric
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 9 , September 2009 , pp. 2873 - 2879
Copyright
Copyright © Materials Research Society 2009

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