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AuthorHabib, Sehrish
AuthorFayyad, Eman
AuthorNawaz, Muddasir
AuthorKhan, Adnan
AuthorShakoor, Rana A.
AuthorKahraman, Ramazan
AuthorAbdullah, Aboubakr
Available date2022-10-02T08:22:09Z
Publication Date2020-04-01
Publication NameNanomaterials
Identifierhttp://dx.doi.org/10.3390/nano10040791
CitationHabib, S., Fayyad, E., Nawaz, M., Khan, A., Shakoor, R. A., Kahraman, R., & Abdullah, A. (2020). Cerium dioxide nanoparticles as smart carriers for self-healing coatings. Nanomaterials, 10(4), 791.‏
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85083957701&origin=inward
URIhttp://hdl.handle.net/10576/34696
AbstractThe utilization of self-healing cerium dioxide nanoparticles (CeO2), modified with organic corrosion inhibitors (dodecylamine (DDA) and n-methylthiourea (NMTU)), in epoxy coating is an efficient strategy for enhancing the protection of the epoxy coating and increasing its lifetime. Fourier transform infrared (FTIR) spectroscopy analysis was used to confirm the loading and presence of inhibitors in the nanoparticles. Thermal gravimetric analysis (TGA) measurement studies revealed the amount of 25% and 29.75% w/w for NMTU and DDA in the nanoparticles, respectively. The pH sensitive and self-release behavior of modified CeO2 nanoparticles is confirmed through UV-vis spectroscopy and Zeta potential. It was observed, through scanning electron microscopy (SEM), that a protective layer had been formed on the defect site separating the steel surface from the external environment and healed the artificially created scratch. This protective film played a vital role in the corrosion inhibition of steel by preventing the aggressiveness of Cl- in the solution. Electrochemical impedance spectroscopy (EIS) measurements exhibited the exceptional corrosion inhibition effciency, reaching 99.8% and 95.7% for the modified coating with DDA and NMTU, respectively, after five days of immersion time.
SponsorThis research was funded by Qatar National Research Fund (a member of the Qatar Foundation), grant number NPRP Grant 11S-1226-170132. Statements made herein are solely the responsibility of the authors.
Languageen
PublisherMDPI AG
SubjectCorrosion inhibitor
Electrochemical impedance spectroscopy
Nanocomposite coating
Nanoparticles
Self-healing
TitleCerium dioxide nanoparticles as smart carriers for self-healing coatings
TypeArticle
Issue Number4
Volume Number10
dc.accessType Open Access


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