Synthesis And Properties Of One-dimensional Nano-semiconductors And Composite Structures

Because of their unique optical,electrical,magnetic and other properties,semiconductor nanomaterials has shown its potential applications in many fields,such as nanoscale devices and functional materials,and many other areas.Since the carbon nanotubes(CNTs)[1]was reported for the first time,a series of one-dimensional semiconductor nanomaterials and their heterostructures have also been prepared.They have unique electrical,magnetic properties,causing widespread concern in the international academic community.Thus,the study of preparation methods and properties of one-dimensional semiconductor nanomaterials are meaningful.[2]In this paper,it was focused on the preparation of one-dimensional semiconductor nanomaterials.By using of solvothermal synthesis,one-dimensional nanostructures of transition metal sulfides and their composite structure were prepared.Then the products were characterized and analyzed,and their properties were studied.The major contents are summarized as follows:(1)A facile solvothermal approach was used to synthesize ?-? semiconductor nanomaterials.We get zinc sulfide(ZnS)nanorods,which was characterized as a hexagonal wurtzite structure,with high purity.The photoluminescence properties of ZnS rods and ZnS rods doped Mn2+ were studied.(2)Via a solvothermal synthesis method,indium sulfide(In2S3)nanobelts was obtained,which was characterized as the ?-In2S3 of cubic phase.The effects of different reaction conditions on the morphology were discussed,and UV-visible absorption property of the nanobelts was studied.(3)On the basis of ZnS nanorods,AuCl3,as a precursor,was added to the body of ZnS,the dumbbell-shaped ZnS-Au heterogeneous nanostructure was got.The detailed morphological and structural analyses of the product were observed.Its optical properties,electrochemical properties and its application in the detection for Hg2+ were studied.