▎ 摘　　要

NOVELTY - Method for preparing polydopamine/graphene oxide fluffy nanofiber adsorbent, involves uniformly mixing dopamine hydrochloride solution and graphene oxide dispersion liquid, adding Tris reagent having pH value of 7.5-9, soaking fluffy polyacrylonitrile nanofiber in reaction system, reacting at 60-70 degrees C for 18-22 hours, and freeze drying to obtain the adsorbent. USE - Method for preparing polydopamine/graphene oxide fluffy nanofiber adsorbent. ADVANTAGE - The method is simple, the prepared adsorbent has low density, large porosity, ensures more than 60% porosity, is fluffy and porous, and the polydopamine modified graphene oxide composite with large layers attached to surface has excellent adsorption performance as heavy metal ion adsorption material.