No abstract

Solar‐driven interfacial steam technology converts photons into heat energy directly and therefore realizes the effective removal of environmental pollutants, which presents huge potential in seawater desalination and freshwater production. To realize efficient and rapid solar‐driven water evaporation, developing and designing efficient photothermal conversion materials is of great significance. Herein, a high‐entropy alloy fiber membrane with rapid heating and wide spectral response was synthesized via adjusting high‐entropy metals diffusion on the surface of carbon nanofibers by an electrospinning technology. Benefited from the low equivalent evaporation enthalpy and high solar spectrum capacity of high‐entropy alloy fibers, the HCNF‐5S2 achieved a rapid steam generation rate of 2.74 kg m‐2 h‐1 with a solar‐to‐vapor conversion efficiency of 99.4% under one sun illumination. In addition, the evaporator presented a stable seawater desalination and wastewater purification performance. Therefore, the high‐entropy alloy‐based solar evaporator can be an alternative photothermal material for efficient solar steam generation.This article is protected by copyright. All rights reserved.