Solar-driven interface steam generation is rapidly emerging as a water purification technology. However, an efficient and facile method to fabricate high-performance and flexible solar evaporators and simultaneously prevent salt accumulation for portable applications is still a challenge. Herein, a super-hydrophilic, conformal and robust Cu-based metal-organic framework (Cu-MOF) absorber coating is strongly immobilized on the commercial textile surface by using sputtered Cu film as a bonding layer, which ensures strong adhesion between the textile substrate and Cu-MOF coating. Benefiting from the excellent capillary effect and powerful water pumping capability, no salt accumulation was observed on the upper surface of Cu-MOF photothermal textile (CMPT) even at a salinity of 9.5 wt% for over 12 h during evaporation. Together with superior light absorptance (95.9%), originating from unique light trapping hierarchical structure of Cu-MOF, and superb air permeability, the CMPT achieved a high evaporation rate of 1.52 kg/m² h under one sun irradiation and simultaneous salt rejection during vapors generation. Moreover, owing to the outstanding structural design, the CMPT possesses high flexibility, superior mechanical strength and excellent chemical stability under harsh environments. The current study presents a simple and straightforward approach for surface-immobilized MOF-coating on textile fibers for practical applications in portable solar steam generators.

太阳能驱动的界面蒸汽生成作为一种水净化技术正在迅速崛起。然而，一种高效、简便的方法来制造高性能和灵活的太阳能蒸发器，同时防止便携式应用中的盐分积累仍然是一个挑战。在此，通过使用溅射的 Cu 膜作为粘合层，将超亲水、保形且坚固的 Cu 基金属有机框架 (Cu-MOF) 吸收剂涂层牢固地固定在商用纺织品表面上，从而确保纺织品基材之间的强附着力和 Cu-MOF 涂层。得益于优异的毛细管效应和强大的抽水能力，即使在蒸发过程中盐度为 9.5 wt% 的情况下，Cu-MOF 光热纺织品 (CMPT) 的上表面也没有观察到盐的积累。在一次阳光照射下²小时，同时在蒸汽产生过程中脱盐。此外，由于出色的结构设计，CMPT在恶劣环境下具有高柔韧性、优异的机械强度和优异的化学稳定性。目前的研究提出了一种简单直接的方法，用于在纺织纤维上进行表面固定 MOF 涂层，用于便携式太阳能蒸汽发生器的实际应用。