The attractive characteristics of nano-materials in structure, optical and chemical properties have aroused great interest of physicists, materials scientists and chemists. 1In the early 1980s, after the concept of nano-materials was formed, the rest of the world paid great attention to such materials. It is its unique physical and chemical properties that make people realize its potential and bring new research opportunities for physics, chemistry, materials, biology, medicine and other disciplines. Nano-materials have a very broad application prospect. In recent years, it has been applied in a certain field of chemical production and shows its unique charm.

1. catalyst plays a decisive role in many fields of catalytic chemistry. It can control the reaction time and improve their efficiency and reaction speed. Most traditional catalysts not only have low catalytic efficiency, but also their preparation is based on experience, which not only causes great waste of raw materials in production, increases cost efficiency, but also pollutes the environment. Nanoparticles have surface activity because they provide the necessary conditions for catalysts. The efficiency of nano-particles catalytic reaction can be greatly improved by controlling the speed, and even can not be used in the reaction. The average reaction speed ratio of nanoparticle catalyst is 10- 15 times. Nanoparticles are used as catalysts in semiconductor photocatalysts, especially in the field of organic preparation. The semiconductor particles dispersed in the solution are similar to a short-circuited micro-battery, and the energy ratio is higher than that of the bandgap semiconductor illumination semiconductor dispersion system, and the semiconductor nanoparticles have electron-absorbing hole pairs. In the electric field, the electron holes separated from the particle surface are moved to different positions, similar to the oxidation and reduction reactions of components in solution. Photocatalytic reaction involves many different types of chemical reactions, such as oxidation of alcohols and hydrocarbons, oxidation and reduction of inorganic ions, organic catalytic hydrogenation and dehydrogenation, amino acids, nitrogen fixation, water purification, water gas shift, and some heterogeneous catalysis is difficult to achieve. Semiconductor effective catalyst for degradation of organic pollutants in water. For example, TiO2 has high photocatalytic activity, acid resistance, light stability, non-toxicity, low price and easy availability, and is the best choice for preparing photocatalyst. This paper reports the use of silica matrix to produce TiO/ SiO2 supported catalyst with higher catalytic activity. Nanoparticles of nickel, copper or zinc compounds are excellent hydrogenation catalysts for some organic compounds, which can replace expensive platinum catalysts or buttons. The reaction temperature of nano-platinum black ethylene oxide catalyst ranges from 600℃ to room temperature. Using nanoparticles as catalysts to improve the reaction efficiency, optimize the reaction path and increase the reaction speed is an important research topic that can not be ignored in the future catalytic science, and it is likely to bring revolutionary changes to the industrial application of catalysts.