▎ 摘　　要

NOVELTY - A sodium alginate-graphene composite double network gel ball is prepared by taking graphite oxide, adding aqueous solution, ultrasonically processing to prepare uniform graphene oxide aqueous solution, adding alginate, stirring into stirring machine, forming uniformly mixed solution, dropwise adding bivalent iron salt solution at 0-100 degrees C using peristaltic pump to prepare graphene oxide loaded single network alginate gel ball, adding aqueous solution containing reducing agent, and water bath heating. USE - Method for preparing sodium alginate-graphene composite double network gel ball (claimed). ADVANTAGE - The ball has excellent salt and alkali resistance, table area large and strong adsorption. The method is simple.