Cesium Tungsten Bronze Nanopowder Applied for Hotel Heat Insulating Glass Coating

Cesium tungsten bronze nanopowder is an important functional material for producing hotel heat insulating glass coating. Wherein, CsxWO3 nanorods with lengths of 10-60 nm can be prepared by controllable solvothermal reaction and a subsequent heat-treatment with citric acid thermolysis under a N2 atmosphere. According to the experts, such coating is developed to achieve simultaneously higher transparency and heat-shielding performance of CsxWO3 for energy-saving glass applications.

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The experts have proved that crystal growth could be controlled by using solid state gel-like tungstic acid as the W source and controlling the water content in the precursor solution. Meanwhile, the deposited carbon film on the particle surface due to thermolysis of citric acid during N2 heat-treatment could also inhibit the crystal growth. And the experts also found that the CsxWO3 coating film on a glass substrate from dispersion of CsxWO3 particles after N2 heat-treatment with citric acid thermolysis exhibited improved transparency and near-infrared (NIR) shielding ability. Particularly, the CsxWO3 particles synthesized using pure ethanol as the solvent exhibited the best visible light transparency and NIR shielding performance.

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