Cesium tungsten bronze nanopowder is often used to produce sun room heat insulating glass coating, which is a new type of transparent and NIR shielding coating. As the prepared smart coating shows excellent thermal insulation property and see-through capability, the nano coating can be applied in building glasses for reducing solar heat gain through building envelop and saving energy for cooling.
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Some experts prepared TiO2/ATO/CsxWO3 coating and coated it on the glass to obtain a novel TiO2/ATO/CsxWO3 tri-structured thin film with excellent NIR shielding performance and high visible transparency. Among them, the TiO2 film acts as the external layer in the substrate glass with optimal thickness of 4 μm. Meanwhile, the ATO/CsxWO3 film with an optimized thickness of 4.63 μm serves as the internal layer in the substrate glass. The visible transmittance and NIR absorbance of the entire thin films are 58.6% and 93.4%, respectively. Moreover, the tri-structured thin films also demonstrate prominent photocatalytic property, mirrored by a degradation test of 29.4% of methylene blue within 30 minutes. Hence, the tri-structured film shows a great potential in energy-efficient glass windows.
