Rational Design of Inhibitor-Encapsulated Bio-MOF-1 for Dual Corrosion Protection

作者：Jinhua Feng, Junnan Chen, Shuchang Wang, Miaomiao Jia, Zhiyu Zhang, Tongwen Yu, Ming Xue · 发表于：Inorganic Chemistry · 年份：2022 · DOI：10.1021/acs.inorgchem.2c03151 · 被引用次数：17 · 研究领域：Corrosion Behavior and Inhibition、Metal-Organic Frameworks: Synthesis and Applications、Metal and Thin Film Mechanics

Searching for the efficient and sustainable inhibitors to defend metal corrosion in the marine environment has received a great deal attention in both academia and industry. In this work, a new strategy was developed to encapsulate benzimidazole (BI) inhibitor guest molecules into the micropores of bio-MOF-1, which was constructed with the other natural adenine inhibitor. Electrochemical characterizations revealed that the slowly sustained release of BI and adenine inhibitors from the BI@bio-MOF-1 composite presented excellent anti-corrosion durability in the whole mild steel corrosion process. The impedance arc value attained approximately 5000 Ω·cm 2 at initially 2 h and further increased to 6000 Ω·cm 2 after 5 days immersion in 0.5 M NaCl solution, and the inhibition efficiency reached 85.36% due to the synergistic dual inhibitive effect of BI@bio-MOF-1 composite. The dual inhibition-based bio-MOF-1 composite equipped strong metal-chelating capability and response durability, exhibiting high potentiality for metal anti-corrosion applications.