Te纳米线模板法加工Bi_2Te_3-Te片式棒热电材料(英文)

In-situ Fabrication of Bi_2Te_3-Te Sheet-rods Using Te Nanowires as Template

以碲纳米线为模板,采用简便的回流法大规模合成了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.