▎ 摘　　要

NOVELTY - Preparing salt-resistant evaporator involves dispersing nanoparticles of size less than 50 nm capable of capturing solar energy as a photothermal conversion agent, in polar solvent, leaving still for 30 minutes to obtain a dispersion, making vertically arranged fibers into 0.13-0.15 g/cm3 fiber bundle with rectangular, circular or trapezoidal shape on the surface, soaking the bundle in water, vertically placing the bundle, coating the dispersion on the upper surface of the bundle to a penetration thickness of 0.2-0.5 cm, drying the bundle with nanoparticles on the surface in a blast drying oven at 50-60 degrees C, baking and carbonizing using a high temperature gun with an outer flame temperature of 400-500 degrees C to obtain a vertically arranged fiber bundle with a black surface, washing the black surface several times with water, drying at 50-60 degrees C, taking out, and assembling nanoparticles on fibers. The thickness of the carbonized layer is 0.1-0.2 cm. USE - The method is useful for preparing salt-resistant evaporator, which is useful for desalting seawater by solar energy and extracting clean water from seawater and sewage. ADVANTAGE - The method provides salt-resistant evaporator, which has excellent cycle stability and salt tolerance. The evaporation rate and light-to-heat conversion efficiency exhibited in high-concentration salt water are higher than reported materials such as carbon nanotubes and graphene.