文摘
An aqueous reduction method was successfully used to prepare Bi nanoparticles at 90 ¡ãC with bismuth nitrate pentahydrate [Bi(NO3)3¡¤5H2O] and sodium-hypophosphite (NaH2PO2¡¤H2O) as reactants. The diameters of Bi nanoparticles were controlled in the range of 10-50 nm under varied experimental parameters. And Bi nanobelts can also be constructed through self-assembly of Bi nanoparticles, which had typical lengths of up to 10 ¦Ìm and widths of up to 100 nm. Tartaric acid (TA, H2C4H4O6) and NaOH are key factors in our preparation. These Bi nanostructures are expected to find potential applications in a variety of areas due to their optical characteristics. Various techniques such as X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) were used to characterize the obtained nanostructures.