Passive radiative cooling (PRC) shows potential for energy savings, especially in the construction and transportation industries. However, it is prone to efficiency loss due to influences from the environment. To address this challenge, we constructed a ZnAl layered double oxide (ZnAl-LDO) substrate, which has optical selectivity, and modified it with a cross-linked surfactant of SiO2/PFDTES, finally yielding an advanced ZnAl-LDOM2 coating material with PRC performance and