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

作者：Zhou B; Zhu JJ^*

来源：Nanotechnology, 2006, 17(6): 1763-1769.

DOI：10.1088/0957-4484/17/6/037

A a general and template-free 'disproportionation and reversal' route was developed to synthesize one-dimensional (1D) 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 nrn, Se nanowires with a width of 60-100 nm and a length of 4-6 mu m, and SexTe100-x alloy nanorods with x in a wide range, and with a width of 30-70 nrn 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 natiosized materials with various morphologies.

• 出版日期2006-3-28
• 单位南京师范大学; 南京大学