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Fabrication of Smart pH-Responsive Nanocontainers for Corrosion Protection of Mild Steel

Fathabadi, H. E ; Sharif University of Technology | 2023

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  1. Type of Document: Article
  2. DOI: 10.1134/S2070205123700648
  3. Publisher: Pleiades Publishing , 2023
  4. Abstract:
  5. Abstract: Intelligent pH-sensitive nanocontainers were successfully constructed employing the Layer by Layer (LbL) approach. FESEM, HRTEM, EDS, elemental mapping, zeta-potential, FTIR, TGA, SIMS, UV–Vis, and Tafel polarization examinations were subsequently performed on the nanocontainers. Following the LbL procedure, imaging evaluation using FESEM and HRTEM revealed a 42 percent increase in the diameter of SiO2 nanoparticles with a halo view. The effective layer implantation was confirmed by EDS, elemental mapping, and zeta potential recording. Electrostatic interactions between Hexamine (HMTA) compounds and distinct layers were discovered using FTIR. Nanocontainers were found to contain 2.86 percent HMTA after a thermal study and a SIMS analysis. An analysis using ultraviolet/visible light showed that the nanocontainers discharged HMTA at various rates into mixtures with different pH. Due to the self-release of HMTA from nanocontainers in extreme acidic and basic mixtures, Tafel polarization suggested surface corrosion resistance. © 2023, Pleiades Publishing, Ltd
  6. Keywords:
  7. Corrosion ; Hexamine ; Nanocontainers ; pH-sensitive ; Steel
  8. Source: Protection of Metals and Physical Chemistry of Surfaces ; Volume 59, Issue 4 , 2023 , Pages 763-777 ; 20702051 (ISSN)
  9. URL: https://link.springer.com/article/10.1134/S2070205123700648