以碲纳米线为模板,采用简便的同流法大规模合成了Bi2Te3-Te片式棒一维材料,产量达到90%.利用X射线衍射、扫描电镜、X射线能谱、透射电镜对样品进行了分析.系统的研究了KOH、EDTA以及反应时间对产物结构的影响,提出了这种异质结构的形成机制.本制备方法可以推广到合成其它金属和半导体的一维特殊纳米结构.
One-dimensional semiconductor materials Bi2Te3-Te nanocomposites, with a sheet-rod nanostructure can be fabrication on a large scale using Te nanowires as the in-situ template under a simple reflux process, and the yield is high up to 90%. The product was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive X-ray spectroscope (EDS) and transmission electron microscope (TEM). It is a promising way to fabricate one-dimensional nanocrystals of other metals and semiconductors. The influence of KOH, EDTA and reaction time are discussed. The formation mechanism of such a heterostructure is also proposed.
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