▎ 摘　　要

NOVELTY - Preparing electrically controlled ionic membrane material separating phosphate ions in water comprises (1) dissolving graphene oxide in deionized water and ultrasonicating to obtain graphene oxide solution, (2) configuring the coexisting solution of nickel nitrate and ferric nitrate, (3) mixing the coexisting solution configured in the step (2) with the graphene oxide solution, adding urea, and magnetically stirring to obtain mixed solution, (4) placing the mixed solution in reactor for reaction, (5) placing the nickel-iron-LDH/graphene oxide hybrid material in hydrazine vapor for reduction, (6) mixing the nickel-iron-LDH/rGO hybrid material, polyvinylidene fluoride (PVDF) and conductive carbon black, uniformly grinding, stirring in N-methyl-2-pyrrolidone (NMP) solvent, overnight, coating on conductive titanium mesh to obtain the electroactive nickel-iron double metal hydroxide functional membrane material doped with reduced graphene oxide. USE - The method is useful for preparing electrically controlled ionic membrane material separating phosphate ions in water. ADVANTAGE - The method: achieves the enrichment of phosphate ions; realizes the regeneration of the membrane material; at the same time, has excellent regeneration and cycle stability; and reaches the adsorption capacity to more than 85% of the initial value after 10 cycles. DETAILED DESCRIPTION - Preparing electrically controlled ionic membrane material separating phosphate ions in water comprises (1) dissolving graphene oxide in deionized water and ultrasonicating to obtain graphene oxide solution, (2) configuring the coexisting solution of nickel nitrate and ferric nitrate, (3) mixing the coexisting solution configured in the step (2) with the graphene oxide solution in the step (1), adding urea, and magnetically stirring to obtain mixed solution, (4) placing the mixed solution obtained in the step (3) in reactor for reaction to obtain nickel-iron-lactate dehydrogenase (LDH)/graphene oxide hybrid material, (5) placing the nickel-iron-LDH/graphene oxide hybrid material obtained in the step (4) in hydrazine vapor for reduction to obtain nickel-iron-LDH/reduced graphene oxide (rGO) hybrid material, (6) mixing the nickel-iron-LDH/rGO hybrid material, polyvinylidene fluoride (PVDF) and conductive carbon black obtained in the step (5), uniformly grinding, stirring in N-methyl-2-pyrrolidone (NMP) solvent, overnight, coating on conductive titanium mesh to obtain the electroactive nickel-iron double metal hydroxide functional membrane material doped with reduced graphene oxide, i.e. electrically controlled ion membrane material. An INDEPENDENT CLAIM is also included for electronically controlled ionic membrane material obtained by the preparation method.