
Nano grain size tungsten trioxide for thermal insulation film may be prepared by many different preparation methods. What are their advantages and disadvantages? Tungsten trioxide with special morphology can be prepared using different preparation methods such as hydrothermal synthesis method, precipitation method, sol-gel method, microemulsion method, gas-liquid reaction method and template method. The advantages and disadvantages of these preparation methods are as follows: The WO3 powder prepared by hydrothermal synthesis method has the advantages of complete grain development, small particle…