Cesium Doped Tungsten Oxide Powder Applied for Transparent Thermal Insulation Material

Cesium doped tungsten oxide powder may be applied for preparing transparent thermal insulation material, which is more and more widely used in building glass. For example, after the cesium doped tungsten oxide nanopowder is sufficiently ground and ultrasonically dispersed in a citric acid solution (of different concentration), it is added to a 0.1g/mL PVA solution, and then stirred in a water bath at 79°C for 0.5h to precipitate 1-2 days to obtain the material to be coated.

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Among them, the XRD diffraction patterns of cesium doped tungsten oxide nano powder synthesized from precursor liquids with different citric acid concentrations can be seen that the diffraction peak of the synthesized cesium doped tungsten oxide is sharp when the concentration of citric acid is high, indicating that the citric acid content is helpful for the formation of cesium doped tungsten oxide crystals. This is because citric acid acts as a reducing agent on the one hand during the reaction, and carbon dioxide gas is generated after the reaction to increase the pressure of the reaction. On the other hand, as a dispersing agent, as the concentration of citric acid increases, the activity of the hydrothermal reaction gradually increases, which promotes the growth of the cesium doped tungsten oxide crystal.

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