Tungsten trioxide has a narrow band gap (2.6-2.7 eV). The band structure of tungsten trioxide can match well with that of titanium dioxide. By compounding it with titanium dioxide, a composite with core shell structure can be obtained, which has better photoelectric or photocatalytic properties than that of a single component (titanium dioxide or tungsten trioxide).

Tungsten copper alloys are widely used in resistance welding, electrical contact materials and EDM plasma electrode materials due to their high strength, high hardness, arc erosion resistance and fusion resistance. It can be used in the lead frame of large scale integrated circuits, heat sink substrates of solid-state microwave tubes and the throat lining of rocket nozzle with short-term high temperature resistance in aerospace technology.

With the boom of new energy vehicles, more and more researchers are devoting themselves to the research of new energy batteries with high performance. At present, lithium-ion batteries have become the most basic battery materials because of their high energy density, long service life and no pollution to the environment. However, cathode materials are becoming the main bottleneck in the industrialization of lithium-ion batteries.

Tungsten carbide is a typical transition metal carbide, which belongs to hexagonal system. Tungsten carbide has good conductivity, and nano-sized tungsten carbide has good potential to replace noble metals as catalysts for hydrogen evolution. Therefore, it has attracted wide attention in the field of catalytic hydrogen evolution.

In recent years, the research on mechanical properties of high performance composite cemented carbides has become one of the frontier topics in the field of cemented carbides. Carbon nanotubes are one-dimensional nanomaterials composed of stable C_C covalent bonds, which have super comprehensive mechanical properties.

In recent years, photocatalysis has attracted widespread attention in environmental control and energy development. Zinc tungstate, as an important photocatalyst, has shown good photocatalytic activity in the photolysis of water and degradation of organic pollutants, and has become a research hotspot at home and abroad.

Tungsten carbide is a kind of important transition metal carbides, which has the catalytic properties similar to noble metals. It has shown excellent catalytic performance in oil, gas hydrodesulfurization, denitrification, hydrocarbon isomerization and other reactions, and is the focus of attention.

Tungsten metal has a series of excellent properties such as high hardness, high strength, low vapor pressure, good corrosion resistance and high temperature corrosion resistance. The tungsten porous body made from it has excellent dimensional stability and durable life, and has been widely used in the fields of electronics, aviation, weapons and other applications.

In recent years, with the improvement of people's living standards, a large number of new decorative materials and luxurious and fashionable modern furniture and other household goods continue to enter the interior, resulting in the increasingly serious indoor environmental pollution. At present, the main indoor pollutants such as formaldehyde, benzene, toluene and other volatile organic compounds (voc) seriously exceed the standard, causing great harm to people's health.

SCR denitrification technology, namely selective catalytic reduction technology, is an environmental protection and pollution control measure adopted by many thermal power plants in China. In the presence of oxygen and the role of catalysts, it can preferentially react with NO_x to produce N₂ and H₂O instead of oxidizing with oxygen in flue gas.