Nano tungsten disulfide (WS2) is a two-dimensional layered nanomaterial that has been widely studied due to its special structure. And it is the special structure (a layered structure) that makes WS2 show excellent physical, chemical, mechanical and electrical performance.
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Nano tungsten disulfide is a typical two-dimensional crystalline material with a layered structure. A single layer of tungsten disulfide consists of three atomic layers. Wherein, the middle layer is a tungsten atomic layer, the upper and lower layers are both sulfur atomic layers. And he tungsten atomic layer is sandwiched by two sulfur atomic layers to form a "sandwich" structure. In the molecular layer, W and S are covalently bonded, but there is only a weak van der Waals force between the molecular layers. This unique "sandwich" layered structure makes two-dimensional layered nanomaterial nano WS2 have wide application prospects in many fields such as lubricants, catalysts, sensors, energy storage, and electroluminescence.
