Synthesis and evolution of PbS nanocrystals through a surfactant-assisted solvothermal route.

Journal Article

We present a surfactant-assisted solvothermal approach for the controllable synthesis of a PbS nanocrystal at low temperature (85 degrees C). Nanotubes (400 nm in length with an outer diameter of 30 nm), bundle-like long nanorods (about 5-15 mum long and an average diameter of 100 nm), nanowires (5-20 mum 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.

Full Text

Duke Authors

Cited Authors

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

Published Date

  • January 12, 2006

Published In

Volume / Issue

  • 110 / 1

Start / End Page

  • 184 - 189

PubMed ID

  • 16471519

International Standard Serial Number (ISSN)

  • 1520-6106

Digital Object Identifier (DOI)

  • 10.1021/jp053215+

Language

  • eng

Conference Location

  • United States