▎ 摘　　要

NOVELTY - Preparing graphene oxide/chitosan composite cadmium ion imprinted hydrogel comprises (i) preparing graphene oxide grafted polyacrylic acid, (ii) preparing polycarbonate microspheres, (iii) mixing ethanol, distilled water, sodium silicate, polyethylene glycol and cetyltrimethylammonium bromide, adding polycarbonate microspheres to form mixed solution, adding aqueous ammonium chloride solution to mixed solution, reacting, suction filtrating, drying and calcining to obtain silicon dioxide hollow microspheres, (iv) preparing chitosan grafted polyacrylic acid, (v) dissolving chitosan grafted polyacrylic acid in distilled water, adding cadmium nitrate, silicone dioxide hollow microspheres and graphene oxide grafted polyacrylic acid, stirring to form mixed solution, reacting for 5 hours at 60-70℃, soaking product in mixed aqueous solution of glutaraldehyde and thiourea, and carrying out cross-linking reaction at 60-70℃, washing to remove template cadmium ions to obtain final product. USE - The method is useful for preparing graphene oxide/chitosan composite cadmium ion imprinted hydrogel. ADVANTAGE - The method: is simple; and has high efficacy. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for graphene oxide/chitosan composite cadmium ion-imprinted hydrogel, prepared by above method.