Cs Doped Tungsten Oxide Nanoparticles Applied for Heat Insulating Window Glass

Cs doped tungsten oxide nanoparticles with the formula of CsxWO3 are important functional nanoparticles for producing heat insulating window glass. And it is believed that Cs doped tungsten oxide nanoparticles are suitable for energy-saving film applications in the building and automobile window glasses. Well, Pt-doped CsxWO3 is also studied in some reports as it has improved near infrared shielding performance.

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Some experts have synthesized Pt-doped CsxWO3 (Ptn-CsxWO3) nanorods by one pot solvothermal method using sodium tungstate and cesium sulfate as raw materials, and investigated the role of Pt-doping on the crystal structure, morphology and transparent thermal insulation of Ptn-CsxWO3. The results indicate that Pt catalysis plays an important role in promoting oxygen vacancies and W5+ generation, and can improve the near infrared shielding performance of Ptn-CsxWO3 greatly. Furthermore, the as-synthesized Ptn-CsxWO3 nanorods could achieve excellent near infrared shielding and transparent thermal insulation performance without requiring additional reduction heat-treatment. In a word, the excellent transparent thermal insulation performance of Ptn-CsxWO3 nanoparticles without needing additional heat-treatment enables them to be more suitable for producing heat insulating window glass.

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