▎ 摘　　要

NOVELTY - Interception-evaporation interface separation type photo-thermal evaporation device comprises polysaccharide-metal ion film porous material and photo-thermal layer. The photo-thermal layer is coated on portion of surface of the polysaccharide-metal ion film porous material. The polysaccharide-metal ion film porous material comprises polysaccharide-metal ion film and porous material. The polysaccharide-metal ion is coated on the surface of the porous material by the film. USE - Interception-evaporation interface separation type photo-thermal evaporation device used in the field of oil-water separation (claimed). ADVANTAGE - The cut-off-evaporation interface separation type photo-thermal evaporation device solves the problem of oil-water emulsion treatment process of water component mass transfer resistance is large, porous material is easy to be polluted by oil, easy to volatilize or heat sensitive oil component recovery rate is low. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing interception-evaporation interface separation type photo-thermal evaporation device, which involves immersing porous material containing metal salt solution, crosslinking reaction to obtain polysaccharide-metal ion film porous material, coating photo-thermal conversion material on the surface of the polysaccharide-metal ion film porous material, obtaining the interception-evaporation interface separation type photo-thermal evaporation device, viscosity of the metal salt solution is lower than that of the polysaccharide solution.