Traditional methods for oil/water separation suffer from many tricky problems such as low efficiency, high energy
consumption, and difficulties in recycling and reusing. To address these hurdles, we developed a metal−organic framework-coated
superwetting membrane for multichannel oil/water separation and collection of floating oils. The dip-coating method adopted in this
paper is extremely flexible in manipulation and can be completed within 1 h under a low temperature without any assistance of high
pressure. Interestingly, the strategy of fabricating superwetting membrane mainly includes introducing vital interlayers of Cu(OH)2
nanowires, which not only construct the favorable hierarchical structures but also act as partly sacrificed templates for further growth
of hydrophilic MOF nanowhiskers. In virtue of the high flexibility of the as-prepared mesh, this superwetting membrane can be
applied for multichannel oil/water separation including gravity-driven oil/water separation, continuous oil/water separation, and
floating oil collection. Moreover, the separation efficiency and flux of the superwetting membrane keep high and stable under
multiple separation cycles. This study paves the way for a fast and facile preparation of a superwetting membrane with high
applicability for multiple oil/water separation.