Interconnected Porous Fabric‑Based Scalable Evaporator with Asymmetric Wetting Properties for High‑Yield and Salt‑Rejecting Solar Brine Treatment  

作　　者：Lipei Ren Qian Zhang Guomeng Zhao Tao Chen Yingao Wang Xingfang Xiao Hongjun Yang Ning Xu Weilin Xu 

机构地区：[1]State Key Laboratory of New Textile Materials and Advanced Processing Technologies,Wuhan Textile University,Wuhan 430200,People’s Republic of China [2]National Laboratory of Solid State Microstructures,Collaborative Innovation Center of Advanced Microstructures,College of Engineering and Applied Sciences,Jiangsu Key Laboratory of Artificial Functional Materials,Nanjing University,Nanjing 210093,People’s Republic of China

出　　处：《Advanced Fiber Materials》2024年第4期1162-1173,共12页先进纤维材料（英文）

基　　金：supported by the National Key Research and Development Program of China(no.2022YFB3804902);National Natural Science Foundation of China(nos.52102262,52103064,52303323,52322211,U21A2095);Natural Science Foundation of Jiangsu Province(no.BK20200340);the Natural Science Foundation of Hubei Province(nos.2023AFB265 and 2020CFA022);State Key Laboratory of New Textile Materials and Advanced Processing Technology(nos.FZ2021004,FZ20230021).

摘　　要：Solar-driven interfacial evaporation has been considered as a promising approach for treating high-salinity brine,which mitigates ecological pollution as well as produces fresh water.Despite the extensive research efforts,challenges remain regarding the stably high-yield solar treatment of high-salinity water on a large scale.Here,we demonstrate an interconnected porous fabric-based scalable evaporator with asymmetric wetting properties fabricated by weaving technique for high-efficiency and salt-rejecting solar high-salinity brine treatment.Three-dimensional interconnected micropores ensure effective convection-induced fast vapor diffusion,leading to a high evaporation rate in the natural environment with the convective flow.The Janus structure effectively separates absorption and evaporation surfaces for stable salt resistance even under fast evaporation.It is observed that the evaporator achieves a high evaporation rate of 2.48 kg m^(-2)h^(-1)under 1-sun illumination and airflow of 3 m s^(-1)when treating 15 wt%saline.Notably,the outdoor experiment demonstrates that there is neither salt precipitation on the surface nor a decrement in evaporation rate during the 5-day evaporation until water and solute have completely been separated.The interconnected porous fabric with asymmetric wetting properties can be easily and massively produced by industrialized weaving techniques,showing great potential for scalable and efficient solar water treatment of high-salinity brine and industrial wastewater.

关 键 词：Saline wastewater treatment Interfacial solar evaporation Janus fabrics Asymmetric wetting properties Airflow enhancement 

分 类 号：TK519[动力工程及工程热物理—热能工程]