A general route for the rapid synthesis of one-dimensional nanostructured single-crystal Te,Se and Se-Te alloys irectly From Te or/and Se powders

Bo Zhou; Jun-Jie Zhu

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A general route for the rapid synthesis of one-dimensional nanostructured single-crystal Te,Se and Se-Te alloys irectly From Te or/and Se powders

机译：从Te或/和Se粉末中直接合成一维纳米结构单晶Te，Se和Se-Te合金的一般方法

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A general and template-free 'disproportionation and reversal' route was developed to synthesize one-dimensional (ID) nanostructures of Te, Se and Se-Te alloys directly from Te or/and Se powders. The products were characterized by x-ray diffraction (XRD), transmission electron microscopy (TEM), selected area electron diffraction (SAED), and scanning electron microscopy (SEM). Te nanorods and nanowires with a width varying from about 40 nm to about 300 nm, Se nanowires with a width of 60-100 nm and a length of 4-6 /im, and Se_xTet_(100-x) alloy nanorods with x in a wide range, and with a width of 30-70 nm and an aspect ratio of three to five, were prepared. The mechanism of formation of the nanorods and nanowires and the effects of the experimental conditions, such as solution concentration, cooling rate, solvent nature and heating process, on the morphology and size of the products have been discussed. We believe that this general route and some other proper reversible processes between solid state and solution state can be extended to the transformations from various bulk materials into nanosized materials with various morphologies.

机译：开发了一种通用且无模板的“歧化和逆向”路线，以直接从Te或/和Se粉末合成Te，Se和Se-Te合金的一维（ID）纳米结构。通过X射线衍射（XRD），透射电子显微镜（TEM），选择区域电子衍射（SAED）和扫描电子显微镜（SEM）对产物进行表征。宽度从大约40 nm到大约300 nm不等的Te纳米棒和纳米线，宽度60-100 nm和长度4-6 / im的Se纳米线以及x中的x的Se_xTet_（100-x）合金纳米棒。制备宽范围的，宽30-70nm，长径比为3至5的薄膜。讨论了纳米棒和纳米线的形成机理，以及溶液浓度，冷却速率，溶剂性质和加热工艺等实验条件对产物形态和尺寸的影响。我们相信，这种从固态到溶液态的一般路线和其他适当的可逆过程可以扩展到从各种块状材料到具有各种形态的纳米级材料的转变。

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《Nanotechnology》 |2006年第6期|共7页
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Bo Zhou; Jun-Jie Zhu;
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A general route for the rapid synthesis of one-dimensional nanostructured single-crystal Te,Se and Se-Te alloys irectly From Te or/and Se powders

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