| 纳米结构Bi2Te3化合物的低温湿化学合成 |
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| 引用本文： | 孙霆,朱铁军,赵新兵. 纳米结构Bi2Te3化合物的低温湿化学合成[J]. 化学学报, 2005, 63(16): 1515-1519 |
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| 作者姓名： | 孙霆 朱铁军 赵新兵 |
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| 作者单位： | 浙江大学硅材料国家重点实验室,杭州310027 |
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| 基金项目： | 国家自然科学基金（Nos.50171064,50471039）;“863计划”纳米专项课题（No.2002AA302406）资助项目. |
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| 摘 要： | 通过对溶液pH值和颜色以及粉末结构的原位分析, 研究了低温湿化学Bi2Te3纳米粉末合成过程中的化学和物理反应机制. 结果表明, 碱性添加剂对合成Bi2Te3是必要的. 采用65 ℃低温湿化学合成方法, 在添加乙二胺四乙酸二钠(EDTA)的情况下, 制备了Bi2Te3纳米囊. 高分辨电镜观察表明, 这种内空管状结构纳米囊的壁厚约为6 nm.
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| 关 键 词： | Bi2Te3 纳米囊 纳米管 湿化学合成 热电材料 |
| 收稿时间： | 2005-10-09 |
| 修稿时间： | 2005-10-09 |
Nanostructured Bi2Te3 Synthesized by Low Temperature Aqueous Chemical Route |
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| Sun Ting;Zhu TieJun;Zhao XinBing. Nanostructured Bi2Te3 Synthesized by Low Temperature Aqueous Chemical Route[J]. Acta Chimica Sinica, 2005, 63(16): 1515-1519 |
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| Authors: | Sun Ting Zhu TieJun Zhao XinBing |
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| Affiliation: | (State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027) |
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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 and 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 have been synthesized by the aqueous chemical route at 65 ℃ 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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| Keywords: | Bi2Te3 nanocapsule nanotube aqueous chemical synthesis thermoelectric material |
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