Impact of Co3O4 nanoparticles on epoxy's mechanical and corrosion-resistance properties for carbon steel in seawater

M A Deyab; Omnia A A El-Shamy; Majed M Alghamdi; Adel A El-Zahhar

doi:10.1038/s41598-024-53967-4

Impact of Co₃O₄ nanoparticles on epoxy's mechanical and corrosion-resistance properties for carbon steel in seawater

Sci Rep. 2024 Feb 12;14(1):3535. doi: 10.1038/s41598-024-53967-4.

Authors

M A Deyab¹, Omnia A A El-Shamy², Majed M Alghamdi³, Adel A El-Zahhar³

Affiliations

¹ Egyptian Petroleum Research Institute, Nasr City, Cairo, 11727, Egypt. hamadadeiab@yahoo.com.
² Egyptian Petroleum Research Institute, Nasr City, Cairo, 11727, Egypt.
³ Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, 61413, Abha, Saudi Arabia.

Abstract

Co₃O₄ nanoparticles (Co₃O₄-NPs) are synthesized using the facile solvothermal method. FT-IR and XRD spectroscopic analyses verify the creation of cobalt oxide nanoparticles with an average size of 13.20 nm. Furthermore, Zeta potential assessments were carried out to identify the electrical charge of the surface of the produced Co₃O₄-NPs, which was found to be -20.5 mV. In addition, the average pore size of Co₃O₄-NPs is 19.8 nm, and their BET surface area is 92.4 m/g. The study also concerned the effect of Co₃O₄-NPs on epoxy's improvement of mechanical and corrosion protection for carbon steel in salt solution. By including Co₃O₄-NPs in an epoxy (EP) coating, corrosion is effectively prevented by non-permeable protective coatings that effectively reduce the transfer of corrosion ions and oxygen.

Keywords: Brine solution; Co3O4-NPs; Coatings; Corrosion; Epoxy.