Biomass-Derived Polysilsesquioxane Nanofilament Reinforced Porous Aerogel for Durable Passive Radiative Cooling across All Day and Weather Conditions.

ABSTRACT: Passive radiative cooling (PRC) is a potentially sustainable strategy by reflecting sunlight (0.3-2.5 μm) and emitting heat through the atmospheric window (8-13 μm) without energy consumption. However, challenges remain due to high sunlight irradiance (1000 W m^-2) during the day. Our research addresses these challenges by incorporating one-dimensional polysilsesquioxane nanofilaments (1D PSNFs) into micro- and nanoporous biomass-derived aerogels, forming a three-dimensional framework. The designed sustainable aerogel cooler achieves greater than 97% sunlight reflection and thermal emission, resulting in a cooling power of 138.6 W m^-2 over 720 h, reducing ambient temperatures by 9 °C. In addition, the aerogel cooler demonstrates high thermal stability, low thermal cond

SUBMITTER: Xu J 

PROVIDER: S-EPMC12613843 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature