Cs Doped Tungsten Oxide Nanoparticles Applied for Infrared Ultraviolet Shielding Material

Cs doped tungsten oxide nanoparticles, that is, cesium tungsten bronze nanoparticles or CsxWO3 nanoparticles, are well-known as an infrared ultraviolet shielding material or a functional material with excellent near-infrared shielding performance. In recent years, with the promotion of cesium-doped tungsten oxide, its preparation has become more and more popular among scholars.

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A Preparation Method of Cs Doped Tungsten Oxide Nanoparticles for Infrared Ultraviolet Shielding Material

Sodium tungstate (Na2WO4·2H2O) was used as a raw material to prepare a 0.5mol/L sodium tungstate solution, and a tungstic acid sol was obtained through cationic resin exchange. And then add a citric acid solution with a concentration of 1mol/L or 2mol/L and cesium carbonate (Cs2CO3) solution with a concentration of 0.3mol/L in to the prepared tungstic acid sol, stirring to obtain a precursor solution for hydrothermal reaction. The precursor solution was put into an autoclave, and reacted at 190 °C for 3 days, and then ultrasonic washing, alcohol washing, centrifugation, and drying were performed to obtain cesium tungsten bronze powder.

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