▎ 摘　　要

NOVELTY - The preparation of sodium alginate/acrylamide/graphene oxide gel balls involves (1) placing graphite in sulfuric acid and phosphoric acid, adding potassium permanganate, ultrasonically treating to obtain graphene oxide, (2) taking small amount of grained graphene oxide powder in beaker, adding water, ultrasonically dispersing, adding sodium alginate and acrylamide, stirring at certain temperature, leaving still, defoaming, injecting mixed solution into solution containing metal cations by peristaltic pump, aging, and washing with deionized water. USE - Preparation method of sodium alginate/acrylamide/graphene oxide gel balls for crystal violet dye absorption. ADVANTAGE - The method enables preparation of sodium alginate/acrylamide/graphene oxide gel balls with excellent performance, and gel ball diameter is about 2.5 mm, ball dry-wet ratio is about 1:50, and crystal violet dye removal rate is 93.44%.