▎ 摘　　要

NOVELTY - A graphene oxide-polylactic acid micro-bubble composite material comprises polylactic acid micro-bubble and graphene oxide. USE - Graphene oxide-polylactic acid micro-bubble composite material used for heavy metal ion adsorption (claimed). ADVANTAGE - The material is environment-friendly, has strong and high adsorption capacity, and suitable for adsorbing sewage heavy metal ions. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene oxide-polylactic acid micro-bubble composite material comprising dissolving polylactic acid micro-bubble and cationic high molecular polymer in water, absorbing, adding graphene oxide in water, and adsorbing.