Brown tungsten oxide, typically referring to tungsten dioxide (WO₂), is an inorganic compound composed of tungsten and oxygen elements. It is an important transition metal oxide with unique physical and chemical properties. Here are some key characteristics of brown tungsten oxide:

In daily life and industrial production, the operation of mechanical equipment relies on the support of lubricating materials. Lubricating materials play a crucial role as they can reduce friction and wear between mechanical components, lower energy consumption, and extend the service life of equipment. In recent years, tungsten disulfide nanosheet (WS₂ nanosheet), as a new type of lubricating material, has gradually become a "star material" in the lubrication field, thanks to its unique structure and excellent properties.

Yellow tungsten oxide (chemical formula: WO₃) is an important transition metal oxide with unique physical and chemical properties, and is widely used in various fields such as energy, environmental protection, and electronics. Here is a brief introduction to its main characteristics:

Tungsten disulfide nanosheet (WS₂ nanosheet) consists of tungsten and sulfur. Its structure resembles a sandwich, with one or more layers of tungsten atoms sandwiched between two layers of sulfur atoms, and these layers are held together by weak van der Waals forces. This unique layered structure endows the WS₂ nanosheet with many excellent physical and chemical properties, making it highly effective in the lcatalysis field.