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Electrochemical and quantum chemical study of 1-ethyl-1H-pyrazolo [3,4-d] pyrimidine-4(5H)-thione as corrosion inhibitor for mild steel in HCl solution
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نویسنده
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el hattabi l. ,echihi s. ,el fal m. ,guenbour a. ,ramli y. ,essassi e.m. ,tabyaoui m.
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منبع
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journal of materials and environmental science - 2017 - دوره : 8 - شماره : 7 - صفحه:2428 -2441
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چکیده
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The 1-ethyl-1h-pyrazolo [3,4-d] pyrimidine-4(5h)-thione (etpp) has been evaluated as corrosion inhibitor for mild steel in 1m hcl solution by means of potentiodynamic polarization and electrochemical impedance spectroscopic measurements. the obtained results revealed that this compound is a good mixed type inhibitor with cathodic predominance effectiveness. the effect of temperature on the corrosion behavior with the addition of optimal concentration of 10-3m was studied in temperature range of 303-343 k. the value of inhibition efficiency decreases slightly with the increasing of temperature. the adsorption of the inhibitor on the mild steel (ms) surface follows the langmuir adsorption isotherm,indicating monolayer adsorption. the activation parameters indicate the inhibitor is physically adsorbed. the findings concerning the quantum chemical calculation indicate a high feasibility of molecular adsorption of etpp. © 2017,university of mohammed premier,oujda morocco.
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کلیدواژه
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Adsorption; Corrosion inhibition; EIS; Hydrochloric acid; Mild steel
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آدرس
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laboratory of nanotechnology,materials and environment,department of chemistry,faculty of science,university mohammed v.,av,ibn batouta,bp 1014,rabat, Morocco, laboratory of nanotechnology,materials and environment,department of chemistry,faculty of science,university mohammed v.,av,ibn batouta,bp 1014,rabat,morocco,laboratory of water and environment,faculty of sciences of el jadida,bp 20,el jadida, Morocco, laboratory organic chemistry heterocyclic urac 21,cluster competence pharmacochemistry,faculty of science,university mohammed v,av,ibn batouta,bp 1014,rabat, Morocco, laboratory of nanotechnology,materials and environment,department of chemistry,faculty of science,university mohammed v.,av,ibn batouta,bp 1014,rabat, Morocco, medicinal chemistry laboratory,faculty of medicine and pharmacy,mohammed v university,rabat, Morocco, laboratory organic chemistry heterocyclic urac 21,cluster competence pharmacochemistry,faculty of science,university mohammed v,av,ibn batouta,bp 1014,rabat, Morocco, laboratory of nanotechnology,materials and environment,department of chemistry,faculty of science,university mohammed v.,av,ibn batouta,bp 1014,rabat, Morocco
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Authors
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