Synthesis and characterization of nanoplate-based SnS microflowers via a simple solvothermal process with biomolecule assistance

A biomolecule-assisted mild solvothermal process has been successfully developed to synthesize the SnS microflowers with nanoplates, in which l-cysteine was used as the sulfur source and complexing agent. The phase structure, morphology, composition and optical properties of the as-prepared product were characterized by XRD, FE-SEM, TEM (HRTEM), SAED, XPS, TGA and UV–vis spectrum. Results demonstrated that the as-synthesized product is comprised of microflowers with nanoplates, and the nanoplates are 50 nm in average thickness. And a possible mechanism for the growth of the SnS microflowers with nanoplates was put forward and briefly discussed. The proposed solvothermal method using l-cysteine as the sulfur source and complexing agent is very promising for the low cost and large-scale synthesis of other tin chalcogenide compounds.

Graphical abstractA biomolecule-assisted mild solvothermal method is described for the synthesis of tin (II) sulfide microflowers with nanoplates, in which l-cysteine was used as the sulfur source and complexing agent. The phase structure, morphology, composition and optical properties of the as-prepared product were characterized by XRD, FE-SEM, TEM (HRTEM), SAED, XPS, TGA and UV–vis spectrum. This method is simple, nonflammable, inexpensive, and environmentally benign. It is very promising for the low-cost and large–scale synthesis of other tin chalcogenide compounds.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► We first prepared the SnS microflowers with the assistance of l-cysteine. ► The product was characterized by XRD, FESEM, TEM (HRTEM), SAED, XPS, TGA and UV–vis. ► A possible mechanism for the growth of the SnS microflowers was put forward. ► This route is very promising for low cost and large scale of other tin chalcogenides.