▎ 摘　　要

NOVELTY - Preparing magnetic graphene surface molecular imprinting nano composite material e.g. comprises (i) dissolving graphene oxide in deionized water, (ii) adding ferric chloride and thionyl chloride and stirring, (iii) adjusting pH, adding hydrazine hydrate and sodium borohydride reducing agent and reacting, (iv) filtering and washing to obtain surface-modified layer, (v) dispersing magnetic graphene in deionized water, adding template molecule and two kinds of silicone and adjusting pH and oscillating, and (vi) eluting, separating and washing. USE - The method is useful in preparing magnetic graphene surface molecular imprinting nano composite material (claimed). ADVANTAGE - The method: is simple, energy saving process and environmentally friendly. The material has specific selection, large adsorption capacity and has faster magnetic separation. DETAILED DESCRIPTION - Preparing magnetic graphene surface molecular imprinting nano composite material comprises (i) dissolving graphene oxide in deionized water and dispersing under ultrasonic conditions for 0.5-4 hours to obtain graphene oxide concentration in aqueous solution of 1-5 mg/ml, (ii) adding 0.005-0.025 mol/ml ferric chloride and 0.0002-0.001 mol/ml of thionyl chloride to obtain mixed solution and stirring for 0.5-4 hours, (iii) adjusting the pH of mixed solution to 9-12, adding hydrazine hydrate and 5-15 ml sodium borohydride reducing agent and reacting at 60-100 degrees C for 2-10 hours, (iv) filtering using suction and washing to obtain surface-modified layer of iron(ii, iii) oxide graphene (magnetic graphene), (v) dispersing magnetic graphene in deionized water, adding certain concentration of template molecule and two kinds of silicone including functional monomer and crosslinking agent and using ammonia or alkaline substance including sodium hydroxide solution adjusting the pH to 9-12 and oscillating for 6-15 hours at a frequency of 50-200 Hz, and (vi) eluting, separating under magnetic field and washing.