Nano cesium doped tungsten oxide may be applied for producing infrared ultraviolet shielding material. According to experts, such heat insulation material is an excellent heat-insulating material, whose heat insulation performance is superior to that of ITO and ATO, and thus it has attracted more and more attention. Therefore, the preparation of cesium doped tungsten oxide nano powder is also more important. So, how to prepare low-period and short-cycle cesium doped tungsten oxide nanopowder with excellent properties?
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Experts have proposed a preparation method of cesium doped tungsten oxide powder, which has certain cost advantage and a short reaction cycle. The preparation of Cs doped tungsten oxide mainly includes the following steps:
1.0 Weigh ammonium paratungstate, cesium hydroxide in accordance with the Cs/W molar ratio 1:(1.5-2.8), add tartaric acid and ethylene glycol, and react at 170°C for 3h; wherein the molar ratio of tartaric acid to cesium ions is (3-7):1; the amount of ethylene glycol is to make the molar concentration of cesium hydroxide reach 0.1-0.4 mol/L.
2.0 The mixture obtained in step 1.0 is charged into a pressure-capacity bomb of polyphenylene material, and reacted at 260-270°C for 5-8h.
3.0 The reactant obtained in the step 2.0 was subjected to alcohol washing, centrifugation, and vacuum drying at 80°C to obtain cesium doped tungsten oxide powder with complete crystallinity.
