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Nanostructured Bi2Te3 synthesized by low temperature aqueous chemical route |
| Sun Ting, Zhu Tiejun, Zhao Xinbing |
| Dept. of Materials Science & Engineering, Zhejiang Univ., Hangzhou, 310027, P. R. China; |
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Abstract Chemical and physical reactions during the low temperature aqueous chemical synthesis of nanostructured Bi2Te3 powders were investigated in-situ by pH measurement, color observation of the solution and X-ray diffraction analysis of the powders. It was found that Bi2Te3 could be synthesized only in a strong alkaline solution. Bi2Te3 nanocapsules were synthesized by the aqueous chemical route at 65 °C with the addition of disodium ethylenediaminetetraacetate salt. High-resolution transmission electron microscopy observation indicates that the nanocapsules are hollow-structured with a wall thickness of about 6 nm.
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Issue Date: 05 June 2006
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