Preparation process of antimony doped stannum oxide nano-crystal

Abstract

The present invention discloses a preparation method of tin oxide (ATO)nanometer crystal with antimon doping , which belongs to the technical field of preparing inorganic material. The preparation method comprises the steps of that: a sticky and paste form tin-antimon mixed solution is obtained by adding multilevel composite fuel into the tin-antimon mixed solution which is prepared by adding tin salt solution into the antimonic salt solution obtained by mixing antimonic salt with coordination agent; the paste form tin-antimon mixed solution is injected into a combustion furnace when the temperature of the furnace is up to 600~900 DEG C, and after the combustion process is finished, the combustion product is collected to obtain flocculent light blue ATO powder. In the present invention, the reaction is controlled by using the thermodynamic property and the kinetic property of each component of the multilevel composite fuel, and the combustion process is rapid and stable; the obtained product has a small grain size, a narrow distribution, a uniform doping and a high purity; the reaction process has no waste water and exhaust emission, saves energy and is adapted to continuous production.

Description

technical field [0001] The invention relates to a rapid preparation method of antimony-doped tin oxide (ATO) nanocrystals, belonging to the field of inorganic material preparation. Background technique [0002] As a new multifunctional material in the 21st century, antimony-doped tin dioxide (ATO) is characterized by its high melting point (about 1200 ° C), good thermal stability, corrosion resistance, good mechanical stability, and easy adsorption of oxygen and carbon monoxide on the surface. The characteristics of solar energy conversion batteries, smart windows, electrochromic materials, electrostatic plastics, chemical fibers, polymer films, anti-radiation and anti-static coating materials for displays, infrared absorption and heat insulation materials, gas sensors, electrode materials, etc. Wide range of applications. [0003] In recent years, the rapid development of nanotechnology has injected new vitality into ATO materials. It has been found tha...

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Problems solved by technology

But so far, because the combustion synthesis method still has some insurmountable problems in terms of technology development and theoretical research, the industry has not yet used the combustion method to synthesize nano-powders, and reports on the synthesis of nano-ATO powders by combustion methods are rare. In the article entitled "Research on ATO Nano-powder Combustion Synthesis" [Journal of Inorganic Chemistry 2004 (7): 801-804], the disclosed technical scheme is to use tin nitrate and antimony citrate as the main raw materials, and use citric acid as the fuel. Nitric acid is used as an oxidant, and a sol is formed by titrating ammonia water, dried in an oven to form a gel, and then the gel is treated at a low temperature of 300°C and a high temperature of 600°C for 2 hours to obtain nano-ATO, and a large amount of gas released during combustion is used to suppress particles However, the process is similar to the conventional co-precipitation method, except that citric acid is added as fuel, the synthesis process is complex, the time is long, and a large amount of smoke is released during the combustion process, labor protection Relatively poor

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