Synthesis and evolution of PbS nanocrystals through a Surfactant-assisted solvothermal route Article

cited authors

  • Zhang, C; Kang, Z; Shen, E; Wang, E; Gao, L; Luo, F; Tian, C; Wang, C; Lan, Y; Li, J; Cao, X

fiu authors

abstract

  • We present a surfactant-assisted solvothermal approach for the controllable synthesis of a PbS nanocrystal at low temperature (85 °C). Nanotubes (400 nm in length with an outer diameter of 30 nm), bundle-like long nanorods (about 5-15 μm long and an average diameter of 100 nm), nanowires (5-20 μm in length and with a diameter of 20-50 nm), short nanorods (100-300 nm in length and an axial ratio of 5-10), nanoparticles (25 nm in width with an aspect ratio of 2), and nanocubes (a short axis length of 10 nm and a long axis length of 15 nm) were successfully prepared and characterized by transmission electron microscopy, scanning electron microscopy, and powder X-ray diffraction pattern. A series of experimental results indicated that several experimental factors, such as AOT concentration, ratio of [water]/[surfactant], reaction time, and ratio of the reagents, play key roles in the final morphologies of PbS. Possible formation mechanisms of PbS nanorods and nanotubes were proposed. © 2006 American Chemical Society.

publication date

  • January 12, 2006

end page

  • 189

volume

  • 110