Tungsten trioxide is regarded as one of the most promising photocatalysts because of its visible light response. However, one of the difficult problems it faces is its poor catalytic activity. Although noble metal platinum (Pt) supported tungsten trioxide exhibits high catalytic performance, the price of platinum is unbearable, so it is imperative to study cheaper synthetic materials.

Silver-tungsten electrical contacts are widely used in various household appliances due to their good thermal conductivity, electrical wear resistance, welding resistance and oxidation resistance.

The preparation of nano organic composite tungsten oxide electrochromic films can make use of nano-structured tungsten oxide films to make organic electrochromic materials better compounded with nano-tungsten oxide electrochromic materials, thereby improving the electrochromic properties of tungsten oxide electrochromic films. The preparation process is as follows:

Tungsten trioxide (WO₃) is an n-type semiconductor oxide with wide band gap. Ordered nanostructured WO₃or hydrated WO₃ has the characteristics of quantum effect and surface effect unique to nanomaterials. It has wide application prospects in gas sensing, photocatalysis, energy storage devices and other fields.