▎ 摘　　要

NOVELTY - Three-dimensional modified graphene aerogel, prepared by doping h-CN nanowires into r-GO, and the mass ratio of h-CN nanowires is 5-50%. USE - The three-dimensional h-CN/r-GO composition aerogel is useful in water treatment (claimed). ADVANTAGE - The h-CN/r-GO composition aerogel: has large specific surface area, large pore volume and excellent pore structure, and has strong adsorption property, and can realize rapid and good selective adsorption of polar and non-polar organic pollutants. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the three-dimensionally modified graphene aerogel, comprising (i) placing a precursor of h-CN in a crucible, capping and calcining in an air atmosphere, and setting a calcination temperature, and naturally cooling to room temperature to obtain a light yellow powder to obtain the light yellow powder obtained by calcination, adding to the alkaline solution, performing ultrasonic dispersion, and then placing in a water bath to heat and stirring, centrifuging the solution at high speed to obtain a milky white substance and repeatedly washing with ultrapure water for 2-3 times, and freeze-drying the resulting precipitate to obtain h-CN nanowire powder; (ii) using a graphene oxide aqueous dispersion as a precursor and h-CN nanowire powder as a nitrogen-doping agent, and three-dimensional h-CN/GO hydrogel is prepared by hydrothermal method, and then using reducing agent to reduce the three-dimensional h-CN/GO hydrogel.