▎ 摘　　要

NOVELTY - A silica-graphene oxide-surface metal ion-imprinted polymer is prepared by adding functionalized silica/graphene oxide composite, reversible addition-fragmentation chain transfer agent, template ions, functional monomer, crosslinking agent and initiator to mixture of methanol and water under anaerobic conditions, reacting mixture in oil bath, washing product, drying product, washing with 2 mol/L hydrochloric acid, washing with deionized water to neutral and drying. USE - Preparation of silica-graphene oxide-surface metal ion-imprinted polymer used for selective adsorption of metal ions in aqueous solution (claimed). ADVANTAGE - The method enables preparation of silica-graphene oxide-surface metal ion-imprinted polymer with high adsorption site distribution and excellent metal-ion selective separation characteristics. DETAILED DESCRIPTION - A silica/graphene oxide is prepared by adding graphene oxide to an aqueous solution of polyvinylpyrrolidone and ethanol, magnetic-stirring mixture at room temperature for 30-90 minutes, to obtain solution (a), adding concentrated aqueous ammonia and tetraethyl orthosilicate to solution (a), ultrasonically-stirring for 30-90 minutes, to obtain solution (b), placing solution (b) in water bath at 30-50 degrees C, reacting for 12-36 hours, washing and drying. A functionalized silica/graphene oxide composite is prepared by adding silica/graphene oxide and silane coupling agent to ethanol, reacting in water bath at 30-50 degrees C for 8-24 hours, washing and drying. A reversible addition-fragmentation chain transfer agent is prepared by adding a solution of phenyl magnesium bromide to three-necked flask, placing three-necked flask in an oil bath, preheating, supplying nitrogen, dripping carbon disulfide, maintaining oil bath temperature, pre-reacting under anaerobic conditions, adding benzyl bromide, heating to reaction temperature, cooling to room temperature, adding ice water, extracting with petroleum ether, and collecting organic phase. A silica-graphene oxide-surface metal ion-imprinted polymer is prepared by adding functionalized silica/graphene oxide composite, reversible addition-fragmentation chain transfer agent, template ions, functional monomer, crosslinking agent and initiator to mixture of methanol and water under anaerobic conditions, reacting mixture in oil bath, washing product, drying product, washing with 2 mol/L hydrochloric acid, washing with deionized water to neutral and drying.