Abstract In this study, a new protective coating system with superior impermeable and active self-healing anticorrosion properties was developed by incorporating of synthesized smart nanocontainers. The impermeable graphene serve as the carrier to encapsulate corrosion inhibitors (benzotriazole, BTA) intertwined with the tannic acid-ferric coordination complex. Local electrochemical impedance spectroscopy and immersion measurements proved that the localized corrosion reaction inside the coating defect can be largely inhibited. The excellent barrier performance of containers-based coating was demonstrated through the increased impedance modulus (nearly two orders of magnitude). In addition, the disassembled tannic acid molecules could integrate with the generated rust to form relatively dense layers. These results indicated the triple-action protective capabilities of coating achieved by the BTA inhibitor, graphene barrier and tannic acid rust-convertor. This novel nanocontainer effectively enhanced the autonomous function of coating and improved its service life under severe conditions.

中文翻译：

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三重智能纳米容器增强保护涂层，具有卓越的主动和被动特性

摘要 在这项研究中，通过引入合成的智能纳米容器，开发了一种具有优异的不渗透性和主动自修复防腐性能的新型保护涂层系统。不可渗透的石墨烯作为载体来封装与单宁酸-铁配位络合物交织在一起的腐蚀抑制剂（苯并三唑，BTA）。局部电化学阻抗谱和浸没测量证明可以在很大程度上抑制涂层缺陷内部的局部腐蚀反应。通过增加的阻抗模量（接近两个数量级）证明了基于容器的涂层的优异阻隔性能。此外，分解的单宁酸分子可以与生成的铁锈结合形成相对致密的层。这些结果表明 BTA 抑制剂、石墨烯屏障和单宁酸锈转化剂实现了涂层的三重保护能力。这种新型纳米容器有效增强了涂层的自主功能，提高了其在恶劣条件下的使用寿命。