Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Morphology Controlled Synthesis of Nanostructured Bi2Te3

  • Kim, Hee Jin (Department of Materials Science and Engineering, Yonsei University) ;
  • Han, Mi-Kyung (Department of Chemistry and Nano Science, Ewha Womans University) ;
  • Kim, Ha-Young (Department of Chemistry and Nano Science, Ewha Womans University) ;
  • Lee, Wooyoung (Department of Materials Science and Engineering, Yonsei University) ;
  • Kim, Sung-Jin (Department of Chemistry and Nano Science, Ewha Womans University)
  • Received : 2012.07.25
  • Accepted : 2012.09.05
  • Published : 2012.12.20
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Abstract

Nanostructured thermoelectric bismuth telluride ($Bi_2Te_3$) powders with various morphologies, such as nanoplates, nanorods, and nanotubes, were prepared by a hydrothermal method based on the reaction between $BiCl_3$, Te, and sodium ethylenediaminetetraacetate ($Na_2$-EDTA) at 150, 180, and $210^{\circ}C$. The products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), and selected area electron diffraction (SAED). The effect of reaction temperature on the morphology of the $Bi_2Te_3$ particles was investigated, and the possible mechanism of morphology control was proposed.

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References

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