Generally, tungsten disulfide can be prepared from tungsten trioxide, using it as the raw material. Tungsten disulfide with different purity can be prepared by this method according to different preparation conditions.

At present, tungsten oxide (WO₃) thin films with resistance sensitive layer are often used to monitor low concentration of NO₂ gas. The preparation methods of WO₃ thin films are to coat nano-tungsten oxide on planar interdigital electrodes or curved ceramic tube substrates by simple manual brushing or deposition. However, the specific surface area of tungsten oxide films prepared by this process is small, which restricts the improvement of the sensitivity of detecting nitrogen dioxide gas.

Tungsten oxide has outstanding electrochromic, photochromic, thermochromic and catalytic properties. It is confirmed that reducing the particle size of traditional electrode materials to zero dimension will greatly enhance the material and charge transport process, and it is expected to expand the application of quantum dots in the field of ultra-fast response electrochemical devices. Zero-dimensional tungsten oxide quantum dots can greatly improve the electroluminescent properties of tungsten oxide. The preparation process of tungsten oxide quantum dots includes the following steps:

Ethanol gas sensor can be used to detect ethanol content in drunk driving inspection or industrial production, avoiding traffic accidents or production safety accidents, and has important practical value. In recent years, tungsten oxide with ethanol sensing properties has attracted the attention of researchers and researchers.

Conductive thin film electrodes are the basic components of organic light-emitting devices (OLED). Their performance directly affects the light-emitting efficiency of the whole device. Among them, transparent conductive film is a photoelectric material which combines optical transparency and conductivity. Because of its excellent photoelectric properties, transparent conductive film can be widely used in solar cells, LED, TFT, LCD and touch screen display fields.

Solar control glass is the glass that transmits the total incident radiation energy (total solar heat) through a high percentage of incident light and a low percentage of total incident radiation energy. One way to produce such glass is to deposit coatings containing one or more layers of various materials, especially metal oxides, such as tungsten oxide, on the glass, which are usually of sub-micron thickness.

Typical semiconductor metal oxides such as titanium dioxide and tungsten trioxide have become the most widely studied and applied metal oxides due to their low cost, non-toxic, harmless, stable biological and chemical properties, and light corrosion resistance.

In industrial production, friction and wear are the main causes of material damage, increasing energy consumption and mechanical equipment scrapping, which has brought serious economic losses. The purpose of lubrication is to reduce friction, wear and energy consumption. The important means of lubrication technology is the use of lubricants, which can be divided into liquid lubricants, solid lubricants and solid-liquid compatible lubricants.

The increasing development of modern industry not only improves people's living standards, but also brings unavoidable damage to the ecological environment. Nitric oxide (NO) emitted from organic matter decomposition, fossil fuel combustion and chemical industry is a common atmospheric pollutant, which is one of the main substances to form acid rain and photochemical smog, and has great damage to the environment. Therefore, the research of nitrogen dioxide gas sensor components has important significance and development prospects.

With the rapid development of modern industry, a large number of untreated industrial wastewater and other untreated wastewater are discharged directly into the nature, causing huge pollution damage to the environment and seriously affecting human health. However, the traditional environmental governance has many problems, such as high energy consumption, high cost, low efficiency and incomplete governance.