▎ 摘　　要

NOVELTY - An oxidized graphene composite which is composite graphene oxide adsorbent is prepared by ultrasonically dispersing graphene oxide in water to obtain oxidized graphene suspension, adding camphor wood dust and carboxymethyl cellulose in oxidized graphene suspension, fully stirring to obtain reaction solution in which mass ratio graphene oxide:camphor wood dust:carboxymethyl cellulose is 2:1:4-6, filtering reaction solution, washing, and freeze-drying. USE - Preparation of oxidized graphene composite for removing heavy metal nickel and phenol in water solution (all claimed). ADVANTAGE - The preparation reduces agglomeration effect of oxidized graphene, increases specific surface area of oxidized graphene composite and hydrophilic dispersibility in solution, improves absorbing property, has easy to obtain raw materials and low preparation and treatment process cost, and is easy to operate. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) process of removing heavy metal nickel in water solution which involves adding 1-2 g composite graphene oxide adsorbent in 1 L water solution containing nickel, absorbing at 20-50 degrees C, fully absorbing and oscillation to complete reaction, and filtering obtained waste liquid using filter film to finish removing heavy metal nickel in water solution; (2) preparation of nickel oxide graphene composite which involves adding graphene oxide composite adsorbent to nickel-containing water solution, adding reducing agent, absorbing after saturation, heating reaction solution to 80-85 degrees C, reacting to obtain black flocculent precipitate in which reducing agent is sodium borohydride, and mass of reducing agent is 9-11 times mass of graphene oxide, filtering precipitate, washing, and freeze-drying; and (3) process of removing phenol in water solution which involves adding 1-2 g nickel oxide graphene composite to 1 L phenol-containing water solution at 20-50 degrees C, fully absorbing and oscillating to complete reaction, and filtering waste liquid using filter film.