Cs doped tungsten oxide nanoparticles are mainly applied to produce heat insulation coating for applying to coat the ordinary glass substrate to obtain nano coated glass. It has been reported that such a nano coated glass is highly transparent to shield heat radiation, thereby helping prohibit the temperature rise in hot summer and reduce the emission of CO2 by saving the energy consumption of air-conditioners.
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According to the experts, it is the mixed chemical valence tungsten ions (W5+ and W6+) in cesium tungsten bronze that make it exhibit excellent near infrared shielding ability in a wide range of 800-2500 nm (The near infrared light accounts for up to 52% of the photo-energy of sunlight.). And the nanosize homogenous rod-like tungsten bronze CsxWO3 with excellent NIR shielding ability can be successfully synthesized by a novel and facile water controlled-release solvothermal process (WCRSP).
