Cesium tungstate with the formula of CsxWO3 is a near infrared shielding material for preparing heat insulation film or coating. And the prepared energy saving products are mainly used to glass curtain wall. Also, CsxWO3 can be composed with SiO2 for efficient removal of Rhodamine B from water.
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Some experts synthesized a novel Cs0.33WO3/SiO2 composite aerogel by ambient pressure drying process using hexamethyldisiloxane/HCl for the surface modification of the wet gel. They investigated the influences of Cs0.33WO3 content on the microstructure, pore characteristics and adsorption/photocatalytic activity of the composite aerogels. And it was found that after being heat-treated at 550 °C, the composite aerogels transformed from hydrophobicity to hydrophilicity without changing the main phase of Cs0.33WO3, which indicated that the outer SiO2 aerogel could improve the oxidation resistance of Cs0.33WO3 greatly. Furthermore, the specific surface area and pore volume of the composite aerogels with appropriate composition even have an increasing trend after heat-treatment.
