▎ 摘　　要

NOVELTY - Preparing graphene oxide/polymer composite antifreeze hydrogel comprises (i) dispersing graphene oxide in deionized water, adding ferrous salt solution under ice-water bath conditions, and reacting to obtain first mixed solution, (ii) adding initiator and sulfuric acid in the first mixed solution to obtain second mixed solution, (iii) adding polymer monomer and double crosslinking agent in second mixed solution to obtain third mixed solution, (iv) shaping third mixed solution at 40-80℃ to obtain graphene oxide/polymer composite hydrogel, and (v) immersing graphene oxide/polymer composite hydrogel in metal salt solution for 8-13 hours to obtain final product. USE - The method is useful for preparing graphene oxide/polymer composite antifreeze hydrogel in preparing conductive materials and biosensors (claimed). ADVANTAGE - The method: has mild conditions and strong controllability, which hcontrols mass ratio of reactants, concentration of salt solution and soaking time of hydrogel. The hydrogel has different mechanical properties, electrical conductivity and antifreeze properties.