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Bi 2 Te 3 ‐based alloys are currently best‐known, technologically important thermoelectric materials near room temperature. In this paper, nanocrystalline Bi 2 Te 3 was synthesized by an aqueous solution technique based on the reaction between the aqueous solution of Bi‐ethylenediamine tetraaceticacid (EDTA), TeO‐EDTA, and NaBH 4 at room temperature. NaBH 4 was used as a reducing agent. TeO‐EDTA was prepared from TeO 2 after satisfactory purification. The sample purity was examined by selected area energy dispersive X‐ray analysis. The products were characterized by X‐ray diffraction and high‐resolution transmission electron microscopy by which the particle morphologies and size were studied. The particle size ranges from 60 to 90 nm.
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Dhak et al. (2005) studied this question.
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