Yellow Tungsten Oxide Nanopowder Applied for Smart Heat Insulation Film

Yellow tungsten oxide nanopowder may be used to prepare smart heat insulation film, which has excellent performance of high heat insulation and UV resistance. So, such smart material may be applied to architectural glass such as glass curtain wall, sun room, and greenhouse, to reduce temperature and energy consumption.

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In this regard, experts say that some of these heat insulating films are prepared using tungsten trioxide as electrochromic material. And some experts say that they doped tungsten trioxide with other elements such as Mo to obtain heat insulating film of better electrochromic properties. The expert also introduced the preparation method of Mo-doped WO3 ultrafine nanowires: 100mL precursor solution and 100mL deionized water were charged into a 250mL flask, condensed and reacted at 110°C for 12h. And the prepared blue solution was centrifuged and finally the centrifuged precipitate was dispersed in deionized water to form a Mo-doped WO3 ink. The reaction temperature of 110°C is mainly selected as the boiling point of the solution is 102.5°C, so the crystallinity of Mo doped WO3 can be ensured.

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