Rational Design and\nFine Fabrication of Passive Daytime\nRadiative Cooling Textiles Integrate Antibacterial, UV-Shielding,\nand Self-Cleaning Characteristics

Passive daytime radiative cooling (PDRC) textiles hold\nsubstantial\npotential for localized outdoor cooling of the human body without\nadditional energy consumption, but their limited multifunctional integration\nseverely hinders their practical application. Herein, aluminum-doped\nzinc oxide (AZO) nanoparticles were purposefully introduced into poly(vinylidene\nfluoride) (PVDF) nanofibers via a facile electrospinning process,\nforming a large-scale and flexible PDRC textile with the desired antibacterial,\nUV-shielding, and self-cleaning capabilities. These prepared PDRC\ntextiles present a weighted sunlight reflection rate of 92.3% and\na weighted emissivity of 89.5% in the mid-infrared region. Furthermore,\noutdoor tests with an average solar intensity of ∼715 W/m<sup>2</sup> demonstrated that a skin simulator temperature could be cooled\nby ∼16.1 °C below the ambient temperature, outperforming\ncotton fabric by ∼6.3 °C. Owing to the outstanding photocatalytic\nproperties of the AZO nanoparticles, these prepared PVDF textiles\nexhibit antibacterial properties (Escherichia coli: 99.99%), UV-shielding performance (UPF > 50<sup>+</sup>), and\nsuperior\nself-cleaning capabilities, providing a cost-effective and eco-friendly\navenue for daytime personal thermal management.