@article{Ma2025, 
author = {Yuan Ma and Tong Li and Si-Rui Zhao and Zhou-Tao Feng and Jin-Ku Liu},
title = {Design synthesis and synergistic anticorrosion performance of ZIF-8/NiAl LDH heterojunction nanocontainers},
year = {2025},
journal = {Nano Research},
volume = {18},
number = {1},
pages = {94907000},
keywords = {layered double hydroxide (LDH), zeolitic imidazolate framework-8 (ZIF-8), nanocontainers, synergistic mechanisms, anti-corrison},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94907000},
doi = {10.26599/NR.2025.94907000},
abstract = {This study introduces a novel relay and synergistic anti-corrosion mechanisms by constructing an active anticorrosive coating with nanocontainers through the combination of zinc-based zeolitic imidazolate framework materials (ZIF-8) and layered double hydroxides loaded with molybdate anions (MoO42− LDHs). The incorporation of ZIF-8 provided the material with abundant surface nano-micropores, enhancing its adsorption capacity for corrosive ions such as OH− and Cl−. Simultaneously, this adsorption enabled the ZIF-8-loaded NiAl-MoO42− LDH to receive signals induced by Cl− stimulation or pH changes. After receiving the signals, the corrosion inhibitor MoO42− encapsulated within the NiAl-MoO42− LDH was released responsively and exchanged with Cl−. The released MoO42− from nanocontainers adsorbed onto localized corrosion sites, forming a passivation film, thereby blocking the diffusion path of Cl−. Additionally, this study demonstrated that the self-assembly of ZIF-8 effectively reduced the hydrophilicity of LDH and enhanced the resistance of coating to permeability. Through supramolecular interactions between LDH hydroxyl groups, metal-organic framework (MOF) functional groups and organic epoxy resin, the cross-linking of the coating and the interfacial compatibility of the materials were significantly improved. The Z-type heterojunction composed of nickel-based LDH and metal organic frameworks not only increased the specific surface area and capacitance performance but also provided photo-induced cathodic protection for metal substrates with matched bandgaps. The experimental results showed that the impedance properties of the ZIF-8/NiAl-MoO42− LDH coatings were 28.43 times of pure epoxy after 168 h. This work can provide new insights and assistance for the study of anti-corrosion mechanisms.}
}