▎ 摘　　要

NOVELTY - Selective electroadsorption of a halogen ion in a composite salt wastewater involves taking a composite bismuth electrode compounded with a bismuth-doped carbon/reduced graphene oxide composite active material to serve as an anode and a carbon material to serve as a cathode, followed by placing in composite salt wastewater and electrifying. The bismuth-doped carbon/reduced graphene oxide composite active material comprises reduced graphene oxide and carbon-coated bismuth elemental particles, which are combined in situ on the surface of the reduced graphene oxide. USE - The method is useful for the selective electroadsorption of a halogen ion in a composite salt wastewater. ADVANTAGE - The method enables simple selective electroadsorption of the halogen ion in the composite salt wastewater with excellent selective electroadsorption ability and cycle performance.