Tungsten is an important rare metal element and has a wide range of uses in industry. There are two kinds of tungsten materials in industry, one is to extract tungsten from tungsten ore, which is called primary tungsten. The other is to recycle waste from tungsten products, such as catalysts, waste alloys and so on. This secondary resource called tungsten, tungsten resources become increasingly scarce, the proportion of secondary resources of tungsten is also growing.

Photocatalytic technology is a technology that uses light energy as energy to realize catalysis. The photocatalytic properties of tungstate have been confirmed by many researches. However, in terms of catalytic efficiency, zinc tungstate, bismuth tungstate and cadmium tungstate are reported more, while silver tungstate is relatively few. This is because the photocatalytic properties of silver tungstate are also worthy of improvement.

Nanocrystalline cemented carbide has excellent properties such as high strength, high toughness, high hardness, good wear resistance and heat resistance, which is difficult to be produced by conventional materials. Nano tungsten powder is the key raw material to prepare nano cemented carbide.

Studies have shown that tungsten can effectively reduce the phase transition temperature of vanadium dioxide, copper can enhance the conductivity of vanadium dioxide.

Bismuth tungstate is a star product in the field of photocatalyst. Because of its narrow forbidden band width (about 2.7eV), it can respond to visible light of 400-460 nm, and because of the layered characteristics of Bi₂WO₆ structure, which consist of WO₆ eight surface layer and Bi₂O₂ layer alternately.

Tungstic heteropoly acid generally refers to heteropoly acid and its salts. It is a polyoxometalate metal complex composed of central (Heteropoly) atoms (P, Si, etc.) and coordinated (multi atom W) bridged by oxygen atoms. It can be widely used in homogeneous and heterogeneous catalytic systems.