عرض تفاصيل البحث

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عنوان البحث
New Heterocyclic Compound As Carbon Steel Corrosion Inhibitor In 1 M H2so4, High Efficiency At Low Concentration: Experimental And Theoretical Studies
عنوان المجلة
Journal Of Adhesion Science And Technology
ISSN-1568-5616
تفاصيل النشر
سنة النشر - 2022 / الفهرس الاصلي للمجلة - 5 : 22 (عدد الصفحات 23)
تصنيف البحث
علوم الكيمياء - المجموعة الطبية
البحث والاستدامة
الهدف 3 – الصحة الجيدة والرفاه   المزيد حول هذا الهدف
البحث والمجتمع
نعم , يدعم

اسم الباحثجهة الانتساببلد الباحث
عاصم علاء عبد الحسين سلمان كلية الصيدلة العراق

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 1M H2SO4. The presence of AT in 0.04mM concentration at 303K 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 476,190M1 at 313K, and G values 25.53, 26.49, 25.97, and 25.78) kJ mol1 over the studied range of temperatures 303–333K, 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.