▎ 摘　　要

NOVELTY - Preparation of multifunctional water separator materials based on graphene oxide nanoribbons involves mixing phosphoric acid solution and concentrated sulfuric acid; adding carbon nanotubes; adding potassium permanganate; moving mixture into oil bath, reacting, cooling; pouring solution into ice-water mixture containing hydrogen peroxide, condensing; adding hydrochloric acid and water, sonicating, filtering using PTFE membrane; drying, sonicating; adding isophorone diisocyanate, washing with dichloromethane and freeze-drying; dispersing in deionized water and filtering. USE - Method for preparing multifunctional water separator materials based on graphene oxide nanoribbons (claimed) used for water separation and heavy metal adsorption. ADVANTAGE - The method protects environment. DETAILED DESCRIPTION - Preparation of multifunctional water separator materials based on graphene oxide nanoribbons comprises: (A) preparing functionalized graphene oxide nanoribbons by taking 2-50 mL phosphoric acid solution, adding into 500 ml round bottom flask, adding 20-400 ml concentrated sulfuric acid, stirring; weighing 0.1-10 g carbon nanotubes, adding into mixed solution in first step, stirring for 0.1-5 hours; slowly adding 0.1-50 g potassium permanganate, stirring for 0.5-1 hour; moving mixture into oil bath at 30-70 degrees C, reacting and stirring for 5-48 hours, cooling to room temperature; pouring solution into ice-water mixture containing 2-50 ml hydrogen peroxide, condensing for 5-48 hours, stopping reaction when solution turns dark green; adding 100-300 ml hydrochloric acid and 50-200 ml water, sonicating, filtering using PTFE membrane, washing; vacuum drying in oven to obtain graphene oxide nanoribbons (GONRs), sonicating for 2-50 minutes to get homogenous suspension of GONRs; adding 0.1-10 g isophorone diisocyanate, stirring under nitrogen protection for 20-30 hours, washing with 4-6 times dichloromethane and freeze-drying; and (B) vacuum filtering by dispersing in 100-1000 ml deionized water, sonicating, and vacuum filtering.