▎ 摘　　要

NOVELTY - Preparing monovalent selective anion exchange membrane comprises (i) mixing p-aminobenzenesulfonic acid and graphene oxide to obtain sulfonated graphene oxide product, (ii) dispersing the sulfonated graphene oxide product in deionized water to obtain a dispersion, (iii) mounting a base film anion exchange membrane on the electrostatic deposition device, and adding dispersion liquid into the liquid chamber, and (iv) installing the modified anion exchange membrane at the through hole of the electrostatic deposition device, adding the dopamine tris-hydrochloric solution into the liquid chamber, and stirring the reaction for 1-24 hours. USE - The method is useful for preparing monovalent selective anion exchange membrane. ADVANTAGE - The method improves stability, anti-pollution performance and monovalent selectivity. DETAILED DESCRIPTION - Preparing monovalent selective anion exchange membrane comprises (i) mixing p-aminobenzenesulfonic acid and graphene oxide in a mass ratio of 1:0.1-10, and reacting at 20-100 degrees C for 3-8 hours to obtain a sulfonated graphene oxide product, (ii) dispersing the sulfonated graphene oxide product in deionized water to obtain a dispersion, where the deionized water is added in an amount of 50-3000 ml/g based on the mass of the sulfonated graphene oxide product, (iii) mounting a base film anion exchange membrane at a through hole on the electrostatic deposition device, the electrostatic deposition device including a first venting chamber, a liquid chamber, a second venting chamber, and electric stirrer, the first venting chamber, the liquid chamber and the second venting chamber are fixed to form a sealed three-chamber structure, and the liquid chamber is sandwiched between the first venting chamber and the second venting chamber, the through hole is provided with a base film mounting hole respectively connected with the first venting chamber and the second venting chamber on both sides of the liquid chamber, where the base film is a diaphragm mounted on the through hole, the first venting chamber and the second venting chamber are respectively connected to the inner cavity of the liquid chamber through the base film, adding dispersion liquid into the liquid chamber, and stirring the reaction for 10-50 hours, at the same time the reaction chamber is connected with the air, and the anion exchange membrane with a sulfonated graphene oxide layer is obtained by the reduction of the reducing agent to obtain a modified anion exchange membrane, where the reducing agent is hydrazine hydrate, ammonia water, and hydroiodic acid or sodium borohydride, and (iv) installing the modified anion exchange membrane at the through hole of the electrostatic deposition device, adding the dopamine tris-hydrochloric solution into the liquid chamber, and stirring the reaction for 1-24 hours.