Corrosion inhibition of carbon steel in 1 M H2SO4 using new Azo Schiff compound: Electrochemical, gravimetric, adsorption, surface and DFT studies

Abstract A new aromatic Schiff base with azo linkage has been synthesized and characterized by FT-IR, 1H-NMR, and 13C-NMR spectroscopy. The new compound 2-(((5-mercapto-1,3,4-thiadiazol-2-yl)imino)methyl)-4-(p-tolyldiazenyl)phenol (5, denoted as AT) was tested as a carbon steel corrosion inhibitor in 1 M H2SO4. The presence of AT in 0.04 mM concentration at 303 K achieved excellent inhibition efficiency values, 96.6 and 97.4% by potentiodynamic polarization and weight loss measurements, respectively. The adsorption process of AT on carbon steel surface was found to obey Langmuir adsorption isotherm with the highest Kads value 476,190 M −1 at 313 K, and ΔG values −25.53, −26.49, −25.97, and −25.78) kJ mol−1 over the studied range of temperatures 303–333 K, indicating the spontaneous formation of stable protection film through a strong adsorption process. Density function theory (DFT) studies were employed for further investigations about the nature of the interaction between the molecules of AT (both of its tautomers) and metal surface. SEM and AFM analysis were used to confirm the inhibition by comparing the morphology of the corroded surface with the inhibited one.

New Heterocyclic Compound as Carbon Steel Corrosion Inhibitor in 1 M H2SO4, High Efficiency at Low Concentration: Experimental and Theoretical Studies

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Hydrazone-based green corrosion inhibitors for API grade carbon steel in HCl: Insights from electrochemical, XPS, and computational studies

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New Aromatic Azo-Schiff as Carbon Steel Corrosion Inhibitor in 1 M H2SO4

https://robots.iopscience.iop.org/article/10.1088/1757-899X/571/1/012077/pdf

Synthesis of New Aromatic Azo-Schiff Compound as Carbon Steel Corrosion Inhibitor in 1 M H2SO4; High Efficiency at Low Concentration

In this research a smart nano-co-polymer (NCP) was prepared from reaction of Phthalic anhydride and Glycerol; the synthesized NCP was characterized through using FT-IR, Atomic Force microscopy and X ray diffraction analysis techniques. The NCPs was mixed with 0.1, 0.2 and 0.3 moles of Acrylic acid monomer. The glutathione protein loaded and release also was studied in the basic and acidic environments. The protein loaded and release was higher in the basic environment than in the acid. 

Ali Ahmed Abdulridha

Papers

Corrosion inhibition of carbon steel in 1 M H2SO4 using new Azo Schiff compound: Electrochemical, gravimetric, adsorption, surface and DFT studies

New Heterocyclic Compound as Carbon Steel Corrosion Inhibitor in 1 M H2SO4, High Efficiency at Low Concentration: Experimental and Theoretical Studies

New Aromatic Azo-Schiff as Carbon Steel Corrosion Inhibitor in 1 M H2SO4

Synthesis of New Aromatic Azo-Schiff Compound as Carbon Steel Corrosion Inhibitor in 1 M H2SO4; High Efficiency at Low Concentration

Synthesis of a smart nano graft co-polymer as a drug delivery