Dielectric-tuned hierarchical nanoarchitectures integrated with volatile corrosion inhibitor systems enable synergistic active-passive anti-corrosion and ultra-broadband microwave absorption

作者：Renchi Qin, Li Tian, Yingrui Tian, Yao Zou, Chenxi Liu, Jiaxu Sun, Qing Qi, Fanbin Meng · 发表于：Nano Research · 年份：2025 · DOI：10.26599/nr.2025.94907740 · 被引用次数：9 · 研究领域：Corrosion Behavior and Inhibition、Gas Sensing Nanomaterials and Sensors

Despite significant advancements in microwave absorption materials (MAMs) for electromagnetic interference mitigation, the integration of robust microwave absorption (MA) and corrosion resistance into a unified system remains a critical challenge, particularly for long-term durability in harsh environments. Conventional approaches relying on multiphase composites often suffer from compromised functionality due to intrinsic property conflicts between absorption and anti-corrosion components. Here, we propose an integrated design strategy of active-passive corrosion inhibition and MA to design composite volatile corrosion inhibition coatings with synergistic dielectric attenuation and multiple corrosion protection effects. Dielectric property modulation strategy-based, we achieved precise modulation of permittivity gradients and interfacial polarization for RGO/FCIP@SiO₂, resulting in optimal impedance matching and record-breaking MA performance: a minimal reflection loss ( RL min ) of −68 dB at 12.82 GHz with a 7 GHz effective absorption bandwidth (EAB) at 2.0 mm thickness. Moreover, the two-dimensional lamellar RGO has a “maze effect” and superhydrophobic architecture (162.3°contact angle) to passively defend against corrosive media. Concurrently, the multicomponent volatile corrosion inhibitor (BGC) system endows the composite with exceptional active corrosion inhibition. Through the dynamic anti-corrosion process involving vapor-phase release, surface adsorption, and prote...