Cesium tungstate nanopowder may be applied for preparing infrared ultraviolet shielding material. The obtained material is a kind of heat insulating material, which is more and more widely applied in the field of architectural glass. Therefore, the preparation of nano grain size cesium tungstate is particularly important. In this regard, experts have proposed a preparation method of nano cesium tungstate, including the following steps:
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1.0 The reaction amount of ammonium paratungstate as a tungsten raw material and cesium carbonate as a raw material of cesium were dissolved in a solvent methanol. The obtained solution was dried to obtain powder, and the powder was further pulverized to obtain a mixed powder of tungsten and cesium.
2.0 The tungsten and cesium mixed powder was placed in a closed reaction vessel with stirring, sorbitol as a reaction solvent was added thereto, and the reaction was reacted at 300°C for 6 hours with stirring. The mass of the reaction solvent was 2 times the mass of the mixed powder of tungsten and cesium.
3.0 The reaction product in step 2.0 is separated and washed with deionized water or ethanol, dried, and pulverized by a jet mill to obtain nanometer cesium tungstate. The air pressure is set at 0.6MPa, and the speed of the air pulverizer classifier is set to 2000r/min.
