Affordable Access

Publisher Website

Synthesis and characterization of PbS nanocrystallites organized into different morphological assemblies

Authors
Journal
Journal of Non-Crystalline Solids
0022-3093
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/j.jnoncrysol.2004.08.155

Abstract

Abstract We present a new, simple procedure for the synthesis of PbS nanocrystallites (NCs) via a solvothermal reaction based on decomposition of lead thiocyanate in a boiling solvent, in the presence of the surfactant cetyltrimethylammoniumbromide (CTAB). Fractional precipitation was used to obtain a narrow size distribution of NCs. The formation of different morphological assemblies depends on the reaction time. The sizes of PbS NCs in ranges of 3–7 nm and 8–14 nm were determined by transmission electron microscopy (TEM) and by the blue shift of the absorption edge. The statistical TEM analysis enables characterization of size distribution of the particles. Dependence of the size and the shape of PbS NCs on the kinds of solvents, surfactants, and the thermal treatments has been demonstrated. The selected area electron diffraction (SAED) confirmed the existence of the rock salt cubic structure of the PbS NCs.

There are no comments yet on this publication. Be the first to share your thoughts.