The common preparation methods of tungsten oxide include:
Preparation method of tungsten oxide – thermal decomposition method
Tungsten oxide is produced by heating tungsten compounds (such as ammonium tungstate, sodium tungstate, etc.) at high temperature for thermal decomposition. This method is usually carried out under an inert atmosphere, and high-purity tungsten oxide can be obtained.
Preparation method of tungsten oxide Hydrothermal synthesis method
Tungsten oxide is formed by reacting tungstate or tungstic acid with an appropriate solvent under high temperature and high pressure conditions. The hydrothermal synthesis method can control the morphology, particle size and structure of tungsten oxide.
Preparation method of tungsten oxide Oxide reduction method
Tungsten oxide is produced by reducing tungsten oxides such as tungsten trioxide. Common reducing agents include hydrogen, sodium hydroxide, and the like.
Preparation method of tungsten oxide Sol-gel method
Through the sol-gel process, the precursor of tungsten (such as tungstate) is dissolved in an appropriate solvent to form a sol, and then tungsten oxide is prepared through steps such as gelation, drying and calcination.
Tungsten Oxide Preparation Method Chemical Vapor Deposition
The tungsten compound in the gas phase is decomposed by chemical reaction to generate tungsten oxide, which is then deposited on the substrate to form a thin film. This method is often used to prepare tungsten oxide thin films.
These methods can be selected according to actual needs to obtain tungsten oxide materials with desired purity, morphology and structure. Different preparation methods may be suitable for different application fields and research purposes.
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