Hydrothermal synthesis and thermoelectric properties of nanostructured Bi0.5Sb1.5Te3 compounds

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  • Yanhua Zhang, Institute of Special Ceramics and Powder Metallurgy, University of Science and Technology Beijing, China
  • Guiying Xu, Institute of Special Ceramics and Powder Metallurgy, University of Science and Technology Beijing, China
  • Jianli Mi, Denmark
  • Fei Han, Institute of Special Ceramics and Powder Metallurgy, University of Science and Technology Beijing, China
  • Ze Wang, Institute of Special Ceramics and Powder Metallurgy, University of Science and Technology Beijing, China
  • Changchun Ge, Institute of Special Ceramics and Powder Metallurgy, University of Science and Technology Beijing, China
  • Interdisciplinary Nanoscience Center
  • Department of Chemistry
Single-phase BiSbTe compounds have been prepared by hydrothermal synthesis at 150°C for 24 h using SbCl , BiCl and tellurium powder as precursors. X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) have been applied to analyze the phase distributions, microstructures and grain sizes of the as-grown BiSbTe products. It is found that the hydrothermally synthesized BiSb Te nanopowders have a morphology dominated by irregular hexagonal sheets due to the anisotropic growth of the crystals. The BiSbTe nanosheets are parallelly stacked in certain direction to form sheet-agglomerates attribute to the temperature gradients in the solution.
Original languageEnglish
JournalMaterials Research Bulletin
Volume46
Issue5
Pages (from-to)760-764
Number of pages5
ISSN0025-5408
DOIs
Publication statusPublished - 1 May 2011

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