Cs0.33WO3 Nanoparticles Applied for Thermal Insulation Dispersion

Cs0.33WO3 nanoparticles are functional nanoparticles that may be used to prepare thermal insulation dispersion. In recent years, this new type of environmentally friendly dispersion has been gradually applied to the fields of architectural glass and automotive glass.

Therefore, experts have increased efforts to study the raw material of cesium tungsten bronze nanoparticles. For example, some experts conducted a comparative study on the near-infrared shielding properties of Cs0.33WO3 powders prepared by heat treatment at different temperatures for 2 hours under air atmosphere, and found that:

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The Cs0.33WO3 powder has a high transmittance in the visible light region and a high shielding ratio in the near-infrared region. This is because a large amount of Cs0.33WO3 powder is in the reduced state of 5+, and a hole electron pair is generated with e-, and a high carrier concentration is advantageous for the near-infrared shielding performance. If the powder is heat-treated in air, as the temperature increases, 5+ is slowly oxidized to 6+, and the carrier concentration is lowered, thus affecting its near-infrared shielding performance. The above "heat treatment at different temperatures" are: untreated; heat treatment at 200°C under air atmosphere; heat treatment at 400°C under air atmosphere.

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