@article{Guo2026, 
author = {Feng Guo and Junyang Chen and Xiaoying Liu and Yuxin Zhang},
title = {Long-lasting corrosion protection of rusted steel via TA-driven chemical modification of LDH-diatomite and adsorption of 8-hydroxyquinoline},
year = {2026},
journal = {Nano Research},
keywords = {rust conversion coating, controlled corrosion inhibition, synergistic anti-corrosion, diatomite microcapsule, tannic acid modification, 8-HQ corrosion inhibitor},
url = {https://www.sciopen.com/article/10.26599/NR.2026.94909112},
doi = {10.26599/NR.2026.94909112},
abstract = {Steel corrosion in humid and saline environments severely threatens infrastructure service durability, while traditional coatings exhibit poor adhesion to rusted steel substrates. Herein, we fabricate a multifunctional anticorrosive filler via facile co-precipitation to in-situ grow Ni-Co layered double hydroxides (LDH) on diatomite (DE). Tannic acid (TA) acts dually as an efficient rust converter that converts iron oxides into stable iron tannate complexes, and a nucleation regulator for homogeneous LDH growth. The corrosion inhibitor 8-hydroxyquinoline (8-HQ) is anchored onto the LDH-DE skeleton via weak electrostatic and coordination interactions, achieving stimuli-responsive sustained release in corrosive media. When embedded into EP resin, the prepared TA/8-HQ@LDH-DE filler realizes hierarchical anticorrosion effects: physical barrier blocking ion penetration, in-situ rust conversion at steel coating interface, and stimuli-responsive inhibitor release to passivate active corrosion sites. Combined electrochemical impedance spectroscopy (EIS) tests and molecular dynamics simulations verify its outstanding anticorrosion performance on rusted Q235 steel. Notably, the TA/8-HQ@LDH-DE/EP coating containing 20 wt.% filler maintained the |Z|0.01Hz value of 4.52 × 108 Ω·cm2 after 40 days of immersion, approximately two orders of magnitude higher than that of the EP coating. This work provides a scalable strategy for integrating passive barrier protection, interfacial rust stabilization, and active intelligent anticorrosion functions toward durable protection of rusted steel substrates.}
}