| Abstract: Various metallic sulfide nanocrystals were synthesized with sulfate and hexamine at 300~600 ℃ in a high pressure reactor. The materials were investigated by a variety of techniques, including X-ray powder diffraction (XRD), transmission electron microscopy (TEM), field scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HRTEM). The results indicate that various metallic sulfide nanocrystals, such as hexaganal FeS, MnS, PbS and ZnS, can be prepared by the present synthetic method under 500 ℃ for 12 h; the as-prepared FeS samples are single-crystal flakes with hexaganal phase. This synthetic method is a novel strategy for the synthesis of metallic sulfide nanocrystals, which may provide a new approach to the synthesis of other sulfide nanostructures. |
