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AuthorQureshi, Ahmadyar
AuthorHabib, Sehrish
AuthorNawaz, Muddasir
AuthorShakoor, R.A.
AuthorKahraman, Ramazan
AuthorAhmed, Elsadig Mahdi
Available date2023-02-15T10:16:35Z
Publication Date2023
Publication NameApplied Clay Science
ResourceScopus
URIhttp://dx.doi.org/10.1016/j.clay.2023.106827
URIhttp://hdl.handle.net/10576/40095
AbstractThe deteriorating effect of corrosion can be controlled by applying suitable polymeric-based coatings. In this work, polyolefin based smart composite coatings containing modified halloysite nanotubes decorated with ceria particles were investigated to analyze their anti-corrosion behavior. For this purpose, halloysite nanotubes (Hals) were utilized as nanocarriers which were loaded with sodium dodecyl sulfate (SDS) as a corrosion inhibitor via overnight stirring and vacuum cycling method. The loaded Hals were then modified/decorated with cerium oxide (CeO2) particles by reacting cerium nitrate (Ce (NO3)3.6H2O) and sodium hydroxide (NaOH) which resulted in the formation of CeO2@HAL/SDS. The synthesized modified particles (CeO2@HAL/SDS) were characterized by energy-dispersive X-ray spectroscopy (EDX), Transmission electron microscopy (TEM), Fourier-Transform Infrared Spectrometer (FTIR), Thermogravimetric analysis (TGA), and differential thermal gravimetric analysis (DTA), X-ray diffraction analysis (XRD) and UV-vis spectroscopic analysis. TGA analysis results demonstrated that about 32% (w/w) of SDS has been loaded into Hal, and 47% (w/w) of CeO2 has been immobilized on the surface of Hal. UV-Vis analysis results demonstrated the pH-sensitive and time-dependent release behavior of synthesized particles. Furthermore, the modified CeO2@HAL/SDS particles (1 wt%) were reinforced into the polyolefin-based matrix, coated on a polished steel substrate and their electrochemical properties were investigated. The electrochemical impedance spectroscopy (EIS) analysis confirms the promising improvement in the corrosion inhibition performance of polyolefin coatings modified with CeO2@HAL/SDS particles when compared to the polyolefin composite coatings modified with HAL/SDS due to the synergistic corrosion inhibition performance of Ce(OH)3 and Fe-SDS formation at the cathodic and anodic region of steel.
SponsorThis research was funded by the Qatar National Research Fund (a member of the Qatar Foundation ), grant number NPRP13S-0120-200116 and Qatar University internal grant number QUCG-CENG-22/23-461 . Statements made herein are solely the responsibility of the authors.
Languageen
PublisherElsevier
SubjectCeria
Corrosion inhibition
Halloysite nanotube
Polyolefin coating
Sodium dodecyl sulfate
TitleModified halloysite nanotubes decorated with Ceria for synergistic corrosion inhibition of Polyolefin based smart composite coatings
TypeArticle
Volume Number233
dc.accessType Open Access


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