Cs0.33WO3 Applied for Sunshade Glass

Cs0.33WO3 for preparing sunshade glass is also known as cesium tungsten bronze that has the property of shielding most of the near infrared rays and transmitting more than 70% visible light to shield heat radiation and ensure daylighting.

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According to the experts, the Cs0.33WO3 nanoparticles also have the near-infrared photothermal conversion property. And they investigated the NIR photothermal conversion property in deionized water at different concentrations. The aqueous dispersion of Cs0.33WO3 nanoparticles was added to a 2-mL polystyrene cell, and then the dispersion was exposed to an 808-nm diode laser with an irradiation area of 0.3 cm2 and an intensity of 820 mW. The temperature of aqueous dispersion was detected with a thermocouple. Photothermal conversion efficiency was calculated. For the study on the photothermal stability of Cs0.33WO3 nanoparticles under NIR irradiation, the 0.08 wt.% aqueous dispersion of Cs0.33WO3 nanoparticles obtained after grinding for 3 h was continuously re-exposed to an 808-nm diode laser for 5 cycles. For each cycle, the aqueous dispersion was irradiated for 10 min and then cooled to the initial temperature. Using a thermocouple, the variation of temperature with time was monitored.

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