Empowering architectural glass fiber textiles with radiative cooling and photocatalytic self-cleaning performance through hybridization and morphology modulation of TiO2 with diverse features

Passive daylight radiative cooling (PDRC) is an eco-friendly and advantageous alternative to electric building cooling that can tackle global warming and minimize energy consumption. Hybridized micro-nanorods of TiO 2 (TNr), which possessed simultaneous favorable solar reflectance and UV photocatalysis, were fabricated and modified by utilizing 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane (PFDTS). It was homogeneously dispersed in a polyvinylidene difluoride (PVDF) precursor solution for spraying processing. A multitude of crosslinked network-like papillae and porous structure was constructed on the PVDF/F-TNr coating. The coated glass fiber textile exhibited a solar reflectance of 94.0 % and an atmospheric window emittance of 92.5 %. The outdoors radiative cooling testing was conducted and a maximum daytime cooling effect of 12.2 °C was realized. The rough porous structure jointly constructed by PVDF and F-TNr endowed the coated textile with favorable superhydrophobicity and photocatalytic properties. The coated glass fiber textile also possessed outstanding self-cleaning and antimicrobial properties, highlighting the potential for building cooling applications.