Hydrothermal synthesis of star-like and dendritic PbS nanoparticles from new precursors--颗粒学报PARTICUOLOGY

Salavati-Niasari, M., & Ghanbari, D. (2012). Hydrothermal synthesis of star-like and dendritic PbS nanoparticles from new precursors. Particuology, 10(5), 628–633. https://doi.org/10.1016/j.partic.2012.02.003

Hydrothermal synthesis of star-like and dendritic PbS nanoparticles from new precursors

Masoud Salavati-Niasari ^a *, Davood Ghanbari ^b

a Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P.O. Box 87317-51167, Iran
b Young Researchers Club, Arak Branch, Islamic Azad University, Arak, Iran

10.1016/j.partic.2012.02.003

Volume 10, Issue 5, October 2012, Pages 628-633

Received 1 November 2011, Revised 6 February 2012, Accepted 14 February 2012, Available online 1 May 2012.

E-mail: salavati@kashanu.ac.ir

Highlights

► PbS was obtained via a hydrothermal reaction between Pb(HSal)₂ and thiourea.

► Star like lead sulfide was obtained at pH = 4.

► Nanoparticle of lead sulfide was obtained at pH = 10.

Abstract

Lead sulfide (PbS) nanostructures with different morphologies and particle sizes were obtained via a simple hydrothermal reaction between lead (II) salicylate (Pb(Hsal)₂) and thiourea (tu). Reaction products were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), ultraviolet-visible (UV–vis) and Fourier transform infrared (FT-IR) spectroscopy. Morphology of the product, varying from star-like to dendritic, depends on the mole ratio of tu to (Pb(Hsal)₂), pH, and reaction time.

Graphical abstract

Keywords

Lead sulfide; Nanostructures; Hydrothermal; Optical properties; Star-like

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