Ethylenediamine inducing growth of {100} facets exposed PbS nanosheets

Abstract

A simple ethylenediamine‐assisted hydrothermal method was developed for the synthesis of sheet‐like PbS nanostructures. Studies show that ethylenediamine not only provides a weakly basic environment for the reaction system, but also acts as a capping reagent to control the growth habit of cubic PbS. A reasonable growth mechanism for the PbS nanosheet structure has been proposed on the basis of the experimental studies. The structure, morphology, and composition of the nanosheets have been characterized by X‐ray powder diffraction, field‐emission scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, and transmission electron microscopy.

New ways to synthesize lead sulfide nanosheets—substituted alkanes direct the growth of 2D nanostructures

“…Stacked, stripe-like structures are the dominant product and XRD shows a small peak for the (311) facet at 2 = 50° ( Figure 3). Other authors report on a hydrothermal method to produce PbS nanosheets using amines, 12 but those structures possess a thickness of over 50 nm, while those reported here are thinner than 10 nm, calculated using the Scherrer equation. 13 Lead sulfide nanosheets are formed through oriented attachment where ultra-small nanoparticles merge via the {110} facets of the crystal to minimize the surface energy of the whole nanocrystal.…”

2D PbS Nanosheets with Zigzag Edges for Efficient CO2 Photoconversion

“…In Figure 1 b, the peaks at 25.9, 30.1, 43.0, 51.0, 53.4, 62.5, 68.9, 71.0 and 78.9° are assigned to the (111), (200), (220), (311), (222), (400), (331), (420), and (422) facets of face‐centered cubic (fcc) PbS (JCPDS#05–0592). There are no other additional diffraction peaks detected, indicating a high phase purity of the synthesized e‐PbS NS [8] …”

Graphene Analogues of Inorganic Layered Materials

“…Hydrothermal treatment of a tin foil with cysteine yields vertically aligned nanosheets of SnS 2 , with a high capacity of 1050 mAh g −1 and a good photocatalytic activity for the degradation of dyes 42. PbS nanosheets of around 50 nm thickness prepared under hydrothermal conditions with cysteine as the sulfur source and ethylenediamine as the growth inducer have exposed (100) facets 43…”