Cesium Doped Tungsten Oxide Nanopowder Applied for Transparent Thermal Insulation Nanopowder

Cesium doped tungsten oxide nanopowder, also known as cesium tungsten bronze nanopowder, is becoming one of a potential transparent heat shielding material --- transparent thermal insulation nanopowder. It is non-toxic and environmentally friendly. And the manufacturing cost is not very high. So, it is more and more widely applied to the field of building and automotive glass.

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It is well accepted that cesium doped tungsten oxide is a typical tungsten bronze material with wonderful near infrared shielding performance, but recent theoretical calculated results have indicated that alkali metal-codoped tungsten oxide would have better infrared barrier properties. And experts have successfully synthesized the monodoped and codoped-WO3 by one-step solvothermal method with tungstate acid as the tungsten source, and CsCl, RbCl as cesium source and Rb source, respectively. The samples were characterized by UV-VIS-NIR transmittance spectroscopy, X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy. And it was found that the products were no impure phase and showed good crystallinity, irregularly agglomerated with diameters of 20-100nm, well dispersed.

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