Ce-based imidazole complex (Ce-IM/ZIF-8) nanoparticles (NPs) were fabricated by doping cerium ions (Ce³⁺ /Ce⁴⁺) in zeolite imidazolate framework-8 (ZIF-8) through a one-pot co-precipitation method. The stimuli-responsive release of Ce³⁺/Ce⁴⁺ species from the Ce-IM/ZIF-8 NPs under acidic conditions was confirmed by UV–Vis spectroscopy. Electrochemical impedance spectroscopy and scanning electron microscope were applied to evaluate the corrosion inhibition efficiency of Ce-IM/ZIF-8 NPs on bare aluminum alloy, and it demonstrates that the released Ce³⁺/Ce⁴⁺, Zn²⁺ ions and imidazole could absorb on the surface of Al alloy by chelating effect, forming a compact corrosion barrier on the Al substrate. Furthermore, the Ce-IM/ZIF-8 NPs were encapsulated into epoxy (EP) resin to obtain a composite coating, and it is found that when the NPs addition amount was 1 wt%, the EP-based composite coating exhibits excellent corrosion barrier and promising self-healing ability, with its impedance at 0.01 Hz maintaining 2.2 × 10⁸ Ω·cm² even after 6 cycles of aging tests (720 h), which could be ascribed to the synergistic inhibition of released Ce ions and imidazole molecules on Al substrate beneath the defective coating.

通过一锅法将铈离子（Ce ³⁺ /Ce ⁴⁺）掺杂到沸石咪唑骨架-8（ZIF-8）中，制备了Ce基咪唑复合物（Ce-IM/ZIF-8）纳米颗粒（NPs）。- 沉淀法。紫外-可见光谱证实了酸性条件下 Ce-IM/ZIF-8 NPs的 Ce ³⁺ /Ce ⁴⁺物质的刺激响应释放。应用电化学阻抗谱和扫描电子显微镜评估Ce-IM/ZIF-8 NPs对裸铝合金的缓蚀效率，结果表明释放的Ce ³⁺ /Ce ⁴⁺、Zn ²⁺离子和咪唑可以通过螯合作用吸附在铝合金表面，在铝基体上形成致密的腐蚀屏障。此外，将 Ce-IM/ZIF-8 NPs 封装在环氧树脂 (EP) 树脂中获得复合涂层，发现当 NPs 添加量为 1 wt% 时，EP 基复合涂层表现出优异的腐蚀阻隔性并且具有良好的自愈能力，其在 0.01 Hz 时的阻抗即使在 6 个循环的老化测试（720 h）后仍保持 2.2 × 10 ⁸  Ω·cm ²，这可能归因于释放的 Ce 离子和咪唑分子的协同抑制作用缺陷涂层下方的铝基板。