Nanostructured Bi2Te3 synthesized by low temperature aqueous chemical route

• 来源期刊: 中国高等学校学术文摘·化学
• 关键词: Bi2Te3 nanocapsule nanotubes aqueouschemical synthesis thermoelectric material
• 年，卷（期）: 2006,（2）
• 页码范围: 188-192
• 页数: 5页
• 语种: 英文

摘要

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℃ 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.