| Abstract
| - This article describes a facile l-cysteine-assisted solvothermal method in a mixed solution made ofethylenediamine (en) and distilled water for the large-scale synthesis of various PbS 1D and 3D novelnanostructures. By varying process parameters such as the molar ratio of Pb(OAc)2 to l-cysteine (reactants),the volume ratio of water to ethylenediamine, and the reaction temperature, a variety of 3D architecturalstructures and a 1D wirelike structure can be controllably synthesized in large quantities. On the basis ofearly arrested growth (nanowires), a reasonable possible mechanism for the growth of PbS dendritic structureshas been proposed. The as-prepared PbS products were examined using diverse techniques including X-raypowder diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electronmicroscopy (TEM), selected-area electron diffraction, high-resolution TEM, Raman spectroscopy, andphotoluminescence emission.
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