▎ 摘　　要

NOVELTY - Two-dimensional nanomaterial-based self-healing barrier dual-functional coating loaded with cerium ions comprises 2-10 pts. wt. two-dimensional nanomaterials loaded with cerium ions, 40-60 pts. wt. bio-based resin, 5-15 pts. wt. polyvinyl acetal, 5-10 pts. wt. polymethylhydrogensiloxane, 4-10 pts. wt. curing agent and 0.005-0.03 pt. wt. anti-flash rust agent. USE - The two-dimensional nanomaterial-based self-healing barrier dual-functional coating loaded with cerium ions is used as surface coating for metal materials (claimed). ADVANTAGE - The coating reduces dependence on petrochemical resources, is more environment friendly and long-term stable and has less pollution to environment, specific release behavior of polydopamine and corrosion inhibitor under corresponding pH conditions and efficient anti-corrosion performance.