Cesium Doped Tungsten Oxide Applied for Infrared Ultraviolet Shielding Material

Cesium doped tungsten oxide is a dark blue powder that may be used to prepare infrared ultraviolet shielding material. With the application of this new type of nano heat insulation material, the preparation of nano particle size Cs doped tungsten oxide powder is more important. For example, the cost, reaction cycle and many other problems should be considered. In this regard, experts have proposed a preparation method of Cs doped tungsten oxide powder, which has certain cost advantage with a short reaction cycle.

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The preparation of the cesium doped tungsten oxide nano powder mainly includes the following steps:

1.0 Weigh ammonium tungstate and cesium nitrate according to Cs/W molar ratio 1: (1.5~2.8), add EDTA and propylene glycol, and react at 170°C for 3h; wherein the molar ratio of EDTA to cerium ion is (3~7):1.

2.0 The mixture obtained in step 1.0 is charged into a pressure-capacity bomb 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 Cs doped tungsten oxide powder with complete crystallinity.

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