Abstract
Hierarchical K2Mn4O8 nanoflowers synthesized by a facile, fast, high-yield and low-cost molten salt method (MSM), have been investigated as a photothermal conversion material for solar vapor generation for the first time. Loading K2Mn4O8 into microporous poly(vinylidene fluoride) membrane (PVDFM) forms a K2Mn4O8/PVDFM composite evaporator. This evaporator shows high solar-to-vapor conversion efficiencies of ∼80.8% and ∼91.2% under 1 sun and 4 sun irradiation, respectively, and a stable solar vapor generation performance. Therefore, this evaporator has shown a promising potential for interfacial solar vapor generation.
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