Synthesis and characterization of a new tungsten sulfide with a lamellar mesostructure

A new tungsten sulfide(designated as WS-L) with intercalated cetyltrimethyl ammonium surfactant cations was prepared under a mild hydrothermal conditio n, and the product was characterized by IR IC-P, SEMI TEM, XPS and TGA. Sod ium tungstate and thioacetamide were used as the tungsten and sulfur source s respectively, whereas the template was cetyltrimethylammonium bromide. XR D and TEM results reveal that the compound has a lamellar mesostructure wit h an interlayer distance of 2.925 nm. The empirical composition of the indi vidual inorganic layer is [WS3.5](2-) and the negative charges on the layer are balanced by the surfactant cations intercalated between two adjacent l ayers.