Morphology and structure of WS₂ nanosheets prepared by solvothermal method with surfactants

In this work, a modified solvothermal method has been developed to synthesize few layers of tungsten disulfide-nanosheets(WS₂-NS). Different types of surfactants were also employed in the modified solvothermal method with respect to the original procedure. As-prepared WS₂ samples were characterized by XRD, TEM, and Raman spectrum. The results showed that the obtained WS₂-NS were consisted of 1–10 atomic layers. Importantly, the effects of surfactant on the morphology formation of WS₂-NS were investigated. A possible growth mechanism is presented to explain the formation of WS₂-NS.