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.

With the development of modern industry, the situation of air pollution, water pollution and soil pollution is getting worse and worse. People feel the harm of environmental pollution to themselves. Protecting the environment is to save themselves. People urgently need a low cost, high efficiency and energy for non-toxic degradation and purification.

Although sunlight is a clean energy source, many problems hinder its widespread use. The most important is its intermittence, which is not always sunny, and sunny periods are not always highly correlated with electricity demand. In addition, if the electricity generated by solar energy cannot be used or stored immediately, it will be wasted. Therefore, there is a need for a practical way to store solar energy, which can be used when needed. These means can make people use solar energy and hydrogen energy more efficiently and further reduce their dependence on oil.

Titanium dioxide is known as a photocatalyst material, but it has little function in the absence of ultraviolet radiation. Therefore, Scientists prefer to study visible-light tungsten trioxide photocatalysts.

Energy shortage and environmental deterioration have become the most important problems facing all countries in the world. The development of new functional materials will be an effective way to solve these problems. Because of its unique physical and chemical and electronic properties, tungsten oxide materials have good application prospects in the fields of color-changing window, photocatalysis, fuel cell, chemical sensor, environmental purification, solar energy conversion and other functions, and have become one of the hot topics in the current research of new materials.

At present, most power plants in our country mainly use coal as fuel. The direct combustion of coal will produce a large number of nitrogen oxides which pollute the environment. At present, flue gas denitrification technology is widely used in developed countries to reduce the emission of nitrogen oxides, and the denitrification rate can reach more than 90%.