Cesium Doped Tungsten Oxide Applied for Transparent Thermal Insulation Material

Cesium doped tungsten oxide may be applied for preparing transparent thermal insulation material. And the preparation of Cs doped tungsten oxide nano powder is becoming more and more important as its application in the field of heat insulation expands. In this regard, the experts proposed a preparation method of nano grain size Cs doped tungsten oxide, which saves raw materials with a short reaction period. More important, such preparation method can solve the deficiencies in the prior art.

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

1.0 According to the Cs/W molar ratio 1: (1.5-2.8), weigh the cesium salt, tungsten salt, add chelating agent and alcohol reagent, react at 170°C for 3h;

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 a complete crystallinity.

The obtained powder is a dark blue powder. The preparation method adopts a short reaction cycle, which is advantageous for industrial production. Moreover, the reaction raw materials used in the method are relatively economical, and therefore the preparation cost is also correspondingly reduced.

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