Abstract
Corrosion inhibitors are crucial for self-healing of the coatings. However, the corrosion inhibition effect of single inhibitor is still limited. In this work, the self-healing nanocomposite coatings (HZK/EP) were prepared based on the synergistic effect of L-histidine (L-His) and Zn2+ ions. Dendritic silica (KCC-1) is used as nanocontainers to realize effective loading and release of inhibitors, thereby greatly improving anticorrosion ability of EP compared with the direct addition of inhibitors. Electrochemical impedance spectroscopy (EIS) results show that HZK/EP has a high |Z|0.01 Hz value of 3.32 × 1010 Ω·cm2 after 40 days of immersion in 3.5 wt% NaCl solution. His-Zn/KCC-1 endows epoxy coating with the excellent self-healing performance, which can be attributed to the fact that the lone pair electrons of N or O atoms of L-His can coordinate with the empty orbital of Zn2+ ions to form a complex.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
