Preparation method and application of porous interface photo-thermal evaporation material

The invention discloses a preparation method and application of a porous interface photo-thermal evaporation material, and belongs to the technical field of seawater desalination. According to the technical scheme, a low-temperature/inferior solvent co-initiation phase separation method is adopted, a good solvent and an inferior solvent are replaced and washed out, a photo-thermal material and a porous interface photo-thermal evaporation material with an alumina fiber doped hydrophilic polymer matrix are formed, the good continuous water supply capacity is achieved, alumina fibers are directionally arranged in the photo-thermal evaporation direction, and the water supply efficiency is improved. The photothermal conversion is more uniform; the porous interface photo-thermal evaporation material is used for the interface photo-thermal evaporator, the interface photo-thermal evaporator floats on the water surface, and the bottom surface of the porous interface photo-thermal evaporation material is in contact wit