摘要：AbstractInspired by lotus leaves, self‐floating Janus cotton fabric is successfully fabricated for solar steam generation with salt‐rejecting property. The layer‐selective soot‐deposited fabrics not only act as a solar absorber but also provide the required superhydrophobicity for floating on the water. With a polyester protector, the prepared Janus evaporator exhibits a sustainable evaporation rate of 1.375 kW m−2h−1and an efficiency of 86.3% under 1 sun (1 kW m−2) and also performs well under low intensity and inclined radiation. Furthermore, no special apparatus and/or tedious processes are needed for preparing this device. With a cost of less than $1 per m2, this flexible Janus absorber is a promising tool for portable solar vapor generator.Self‐floating Janus cotton fabric inspired from lotus leafare rationally constructed for sustainable solar steam generation with an efficiency as high as 86.3% under one sun, and demonstrate good salt‐rejecting ability.
