Scalable Core–Sheath Yarn for Boosting Solar Interfacial Desalination Through Engineering Controllable Water Supply  

作　　者：Xingfang Xiao Luqi Pan Tao Chen Manyu Wang Lipei Ren Bei Chen Yingao Wang Qian Zhang Weilin Xu 

机构地区：[1]State Key Laboratory of New Textile Materials and Advanced Processing Technologies,School of Textile Science and Engineering,National Local Joint Laboratory for Advanced Textile Processing and Clean Production,Wuhan Textile University,Wuhan 430200,China

出　　处：《Engineering》2023年第11期153-160,共8页工程（英文）

基　　金：financial support from the National Natural Science Foundation of China(52103064 and U21A2095);the Key Research and Development Program of Hubei Province(2021BAA068);National Local Joint Laboratory for Advanced Textile Processing and Clean Production(FX2022001)。

摘　　要：Tailoring water supply to achieve confined heating has proven to be an effective strategy for boosting solar interfacial evaporation rates.However,because of salt clogging during desalination,a critical point of constriction occurs when controlling the water rate for confined heating.In this study,we demonstrate a facile and scalable weaving technique for fabricating core-sheath photothermal yarns that facilitate controlled water supply for stable and efficient interracial solar desalination.The core-sheath yarn comprises modal fibers as the core and carbon fibers as the sheaths.Because of the core-sheath design,remarkable liquid pumping can be enabled in the carbon fiber bundle of the dispersed superhydrophilic modal fibers.Our woven fabrics absorb a high proportion(92%)of the electromagnetic radiation in the solar spectrum because of the weaving structure and the carbon fiber sheath.Under one-sun(1 kW·m^(-2))illumination,our woven fabric device can achieve the highest evaporation rate(of 2.12kg·m^(-2)·h^(-1) with energy conversion efficiency:93.7%)by regulating the number of core-sheath yarns.Practical application tests demonstrate that our device can maintain high and stable desalination performance in a 5 wt%NaCl solution.

关 键 词：Interfacial solar desalination Photothermal yarn Tunable water supply Core-sheath yarn'Salt clogging 

分 类 号：TB34[一般工业技术—材料科学与工程]