▎ 摘　　要

NOVELTY - The method involves preparing adhesive solution. The adhesive is loaded to the three-dimensional substrate with quasi-oriented fiber structure. An adhesive layer is formed on the substrate. The photo-thermal material is loaded on the adhesive layer to obtain the high-efficiency photo-thermal evaporation material. The polyvinyl acetate molecular weight range is 10000-1000000, and the polyvinyl acetate aqueous solution concentration is 1 to 5mg/mL. The substrate in the polyvinyl acetate adhesive solution is soaked for 10-60s. An adhesive layer is formed on the substrate material. The photo-thermal material is Transition metal carbides Titanium carbide nanosheet, graphene oxide nano sheet, and molybdenum disulfide nano sheet. The concentration of the photo-hermal material water dispersion liquid is 1 to 50mg/mL. USE - Method for preparing high-efficiency photo-thermal evaporation material (claimed). ADVANTAGE - The high absorption and high-efficiency evaporation in the solar spectrum range can be realized. Heat concentration on the evaporation surface and the transmission of water can be improved by the evaporation material structure of three-dimensional connected channel. The method is featured with low cost, simple operation, and easy scale preparation characteristics. The flexibility of the evaporation material can be improved. The evaporation material can be assembled into different specifications of evaporation system based on the requirements. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the scanning electron microscope image of the high-efficiency photo-thermal evaporation material.