Cesium Tungsten Bronze Applied for Living Room Thermal Insulating Film

Cesium tungsten bronze is the best choice to prepare living room thermal insulating film. But why? That is because the prepared heat insulating film has high light absorption property in the near-infrared region. Specifically, the highest absorbance at the wavelength of 1012 nm in the near-infrared region is 1.96, and the lowest absorbance at the wavelength of visible light at 431 nm is 0.80.

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The expert introduced a preparation method of cesium tungsten bronze for living room thermal insulating film. The steps are as follows as:

Step One: Pour 20ml of 0.5mol/L tungstic acid solution into a beaker, add 30ml 2mol/L citric acid solution in stirring, slowly add 5ml 0.3mol/L cesium carbonate solution and continue stirring for 1h to obtain the reaction precursor solution for preparing Cs0.33WO3. Wherein, the concentration of tungstic acid in the precursor solution is 0.18mol/L, and the concentration of citric acid is 1.10 mol/L.

Step Two: Transfer the prepared reaction precursor solution into the autoclave, and continuously hydrothermally reacting at 200 °C for 3 d.

Step Three: The obtained precipitate is sequentially washed with water and alcohol for 3 times, and after centrifugation, it is dried at 50 °C for 10 h to obtain the dark blue hexagonal phase Cs0.32WO3 powder with an average particle size of 188.5 nm and a specific surface area of 41.67 m^2/g.

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