▎ 摘　　要

NOVELTY - Preparing lithium ion imprinting hybrid membrane, comprises e.g. adding graphene oxide and powder polyvinylidene fluoride, dissolving in N-methyl pyrrolidone, stirring mechanically, and mixing uniformly, allowing to stand, to obtain polyvinylidene fluoride/oxidized graphene hybrid membrane, recording as PVDF/GO hybrid membrane, and storing the film in deionized water or distilled water, preparing tris-hydrochloride solution, adding and mixing uniformly, and obtaining mixed solution under the PVDF/GO hybrid membrane immersing in the mixed solution. USE - The lithium ion imprinted hybrid film is useful for the adsorption of lithium ions (claimed). ADVANTAGE - The hybrid film has ability to specifically recognize the printed trace hybrid membrane material, and is capable of identifying and absorb lithium ion under the other competitive ion exists. DETAILED DESCRIPTION - Preparing lithium ion imprinting hybrid membrane, comprises (i) adding graphene oxide and powder polyvinylidene fluoride, dissolving in N-methyl pyrrolidone, stirring mechanically, and mixing uniformly, allowing to stand, to obtain polyvinylidene fluoride/oxidized graphene hybrid membrane, recording as PVDF/GO hybrid membrane, and storing the film in deionized water or distilled water; (ii) preparing tris-hydrochloride solution, adding and mixing uniformly, obtaining mixed solution, under the PVDF/GO hybrid membrane immersing in the mixed solution, at room temperature conditions for oscillating, after the reaction, taking out the product, washing and drying, to obtain polyvinylidene fluoride/graphene oxide poly-dopamine membrane, marking as PVDF/GO-pDA hybrid film; and (iii) taking 4-crown 12, lithium chloride, dispersing uniformly in ethanol, adding vinyl triethoxysilane, magnetically and stirring uniformly, adding ethyl orthosilicate, ammonia water and deionized water to obtain mixed liquid, adding PVDF/GO2-pDA hybrid film into the mixed liquid, magnetic stirring after precipitation polymerization, taking out the film, washing and drying the prepared film.