Infrared Shielding Nano Powder: Doped Tungsten Oxide

Doped tungsten oxide is an infrared shielding nano powder that can be used to produce transparent heat insulating materials for glass such as architectural glass, automotive glass, and train glass. This is a multi-doped tungsten oxide nano powder, whose expression is CsxSnyBizW(1-x-y-z)O3, wherein 0<x<0.3, 0<y<0.1, 0<z<0.1. By controlling the doping ratio, the infrared shielding performance and the visible light transmittance of the target product can be adjusted.

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The prepared Sn, Bi and Cs co-doped tungsten oxide nano powder has good stability. The infrared shielding is 96-99%, and the visible light transmittance is 75-90%. Compared with single doped tungsten oxide at 500°C under infrared irradiation, the infrared shielding attenuation is greater than 10%, and the Sn, Bi and Cs co-doped tungsten oxide has an infrared shielding attenuation of less than 1% under the same conditions. Besides, the Sn, Bi and Cs co-doped tungsten oxide nanomaterials are simple to fabricate. The operation is easy, and the environmental protection is good. In addition, the cost is low with good industrial application prospect.

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