Ion Substitution Strategy toward Spectral Tunability of Environmentally Friendly Rare Earth Sulfide Lattices for Radiative Cooling
ACS SUSTAINABLE CHEMISTRY & ENGINEERING(2023)
摘要
Radiation cooling technology can effectively reduce the energy transmission of the sun to the building during the day, thus playing a certain positive role in alleviating the urban heat island effect and reducing energy consumption. In this study, red Nd-doped gamma-Ce2S3 and orange La-doped gamma-Ce2S3 were prepared by the green synthesis method, and their morphologies and optical properties were systematically studied. The color film produced by mixing the prepared microcrystalline powder with poly(vinylidene fluoride-hexafluoro propylene) at a certain proportion has near-infrared reflectivity and superior environmental resistance, achieving effective cooling of 3-6 degrees C when applied to the building surface. This study expands ideas for energy-efficient building materials and enriches the path to a carbon neutral sustainable future.
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关键词
radiative cooling,chemical doping,chromacontrol,rare earth,spectral tunability
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