▎ 摘　　要

NOVELTY - Preparing double template-guided imprinted composite membrane comprises (i) sonicating 10 ml of 3 wt.% cellulose nano-crystals suspension for 10 minutes, adding neodymium(III) nitrate hexahydrate and graphene oxide solution and then iminodiacetic acid-(3-glycidoxypropyl)trimethoxysilane(GLYMO-IDA) silane and tetraethyl orthosilicate and fully dissolved, stirring the mixture under heating to obtain homogeneous mixture, placing in a polystyrene petri dish, drying at room temperature and evaporating to obtain composite membrane, and (ii) placing composite membrane in step (i) in sulfuric acid, heating without stirring, repeating many times until the cellulose nano-crystals template could not be detected by X-ray diffraction, removing membrane, washing with large amounts of deionized water, and then washing membrane with 1 l water and air drying to obtain final product. USE - The method is useful for preparing double template-guided imprinted composite membrane. ADVANTAGE - The method is useful for industrial production.