2024-04-022024-07-15 20:44浏览数:76次
Biomimetic Design of 3D Fe3O4/V-EVOH Fiber-Based Self-FloatingComposite Aerogel to Enhance Solar Steam GenerationPerformance An interfacial solar steam generation evaporator for seawaterdesalination has attracted extensive interest in recent years. Nevertheless,challenges still remain in relatively low evaporation rate, unsatisfactory energyconversion efffciency, and salt accumulation. Herein, we have demonstrated abiomimetic bilayer composite aerogel consisting of bottom hydrophilic andvertically aligned EVOH channels and an upper hydrophobic conical Fe3O4array. Thanks to the design merits, the 3D Fe3O4/V-EVOH evaporatorexhibits a high evaporation rate of ∼2.446 kg m−2 h−1 and an impressive solarenergy conversion efffciency of ∼165.5% under 1 sun illumination, which issuperior to those of state-of-the-art evaporators reported so far. Moreover, theasymmetrical wettability not only allows the evaporator to self-ffoat on thewater but also facilitates the salt ion diffusion in the channels; thus,the evaporator shows no salt crystals on its surface and only a 6%decrease in evaporation performance even after the salt concentration increases from 0 to 10.0 wt %. Wu Y, Li S, Yan K, et al. Biomimetic Design of 3D Fe3O4/V-EVOH Fiber-Based Self-Floating CompositeAerogel to Enhance Solar Steam Generation Performance[J]. Nano Letters, 2024, 24(15): 4537-4545.
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