Arch-Bridge Photothermal Fabric with Efficient Warp-Direction Water Paths for Continuous Solar Desalination

Arch-Bridge Photothermal Fabric with Efficient Warp-Direction Water Paths for Continuous Solar Desalination

9 April 2024 | Yuxin Yang¹,⁴ · Daiyi Wang¹ · Wenxi Liao¹ · Haoyue Zeng¹ · Yujian Wu¹ · Luxin Li¹ · Wei Feng¹ · Jie Xue³ · Hongbin Cao² · Jiaqi Chen¹ · Yanyan Huang¹ · Yanyan Zheng¹ · Pan Wang¹ · Jun Liu² · Muchun Guo⁴ · Huang Zhou² · Xing Fan³
A novel scalable and recyclable arch-bridge photothermal fabric (ABPF) with efficient warp-direction water paths has been developed for continuous solar desalination. This fabric is fabricated using a shuttle-flying weaving technique, which allows for precise construction of effective water paths and improved water-heat distribution at the solar evaporation interface. The ABPF design minimizes heat loss and enhances the water evaporation area, resulting in a highly efficient, all-weather solar water evaporation system. The fabric incorporates a new interface contact mode between water path fibers and polyaniline photothermal fibers. Under solar illumination of 1 kW/m², the temperature, evaporation rate, and solar-vapor conversion efficiency of the photothermal fabric reached above 123°C, 2.31 kg/m²/h, and 99.93%, respectively. The ABPF fabric demonstrates an excellent water evaporation rate, providing a new approach for improving sustainable seawater desalination. The study highlights the importance of designing effective water transport channels to enhance solar evaporation efficiency. The fabric is made from flexible photothermal fibers as the weft and hydrophilic fibers as the warp. The fabrication process involves in situ loading of polyaniline onto cotton threads and the preparation of hydrophilic cotton fibers through alkaline treatment. The ABPF fabric represents a significant advancement in solar desalination technology, offering a scalable and recyclable solution for efficient water evaporation.A novel scalable and recyclable arch-bridge photothermal fabric (ABPF) with efficient warp-direction water paths has been developed for continuous solar desalination. This fabric is fabricated using a shuttle-flying weaving technique, which allows for precise construction of effective water paths and improved water-heat distribution at the solar evaporation interface. The ABPF design minimizes heat loss and enhances the water evaporation area, resulting in a highly efficient, all-weather solar water evaporation system. The fabric incorporates a new interface contact mode between water path fibers and polyaniline photothermal fibers. Under solar illumination of 1 kW/m², the temperature, evaporation rate, and solar-vapor conversion efficiency of the photothermal fabric reached above 123°C, 2.31 kg/m²/h, and 99.93%, respectively. The ABPF fabric demonstrates an excellent water evaporation rate, providing a new approach for improving sustainable seawater desalination. The study highlights the importance of designing effective water transport channels to enhance solar evaporation efficiency. The fabric is made from flexible photothermal fibers as the weft and hydrophilic fibers as the warp. The fabrication process involves in situ loading of polyaniline onto cotton threads and the preparation of hydrophilic cotton fibers through alkaline treatment. The ABPF fabric represents a significant advancement in solar desalination technology, offering a scalable and recyclable solution for efficient water evaporation.
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