Ultraviolet durable and recyclable radiative cooling covering for efficient building energy saving

. The calculated energy consumption results indicated that the average cooling consumption reached 429.4 kW h, and 31% of the cooling energy could be saved. Notably, owing to the conjugated benzene ring structure of styrene-ethylene-butylene-styrene (SEBS), the film blocked most of the incident UV radiation and diffused the absorptive energy through the delocalization effect of electron clouds. Thus, the film retained high solar reflectivity after continuous UV exposure for 240 h. Notably, the film could be cyclically utilized using a simple nonsolvent-induced phase separation (NIPS) approach. This research offers new insights into the design of UV-durable and recyclable PRC materials, providing a promising prospect for minimizing global building energy consumption and facilitating the development of sustainable buildings.