Evaluation of the inhibition effect of novel cyclohepta[b]pyridine derivatives for copper corrosion and theoretical calculations

Author(s):  
Ahlam M. Fathi ◽  
El Hassane Anouar ◽  
Hanan A. Soliman ◽  
Ahmed H. Shamroukh ◽  
Eman R. Kotb ◽  
...  
2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Zaklina Z. Tasić ◽  
Marija B. Petrović Mihajlović ◽  
Ana T. Simonović ◽  
Milan B. Radovanović ◽  
Milan M. Antonijević

Abstract It is known that if unused drugs are improperly disposed, they can pollute the environment. Furthermore, researchers are still trying to find an environmentally friendly corrosion inhibitor. These factors lead to the possible application of unused pharmaceutical compounds as corrosion inhibitors. The feasibility of an anti-inflammatory, analgesic and antipyretic drug, ibuprofen, was evaluated as a potential copper corrosion inhibitor in synthetic acid rain solution. This investigation was performed by applying electrochemical and weight loss measurements and quantum chemical calculations. The results obtained by these techniques revealed the ability of ibuprofen to protect copper from corrosion. The inhibition efficiency of ibuprofen rises with increase in its concentration and can reach a value of 97.3%. The results of surface analysis of treated coupons by scanning electron microscopy and theoretical calculations are consistent with the experimental results.


2008 ◽  
Vol 50 (12) ◽  
pp. 3467-3474 ◽  
Author(s):  
G. Quartarone ◽  
M. Battilana ◽  
L. Bonaldo ◽  
T. Tortato

RSC Advances ◽  
2015 ◽  
Vol 5 (52) ◽  
pp. 41923-41933 ◽  
Author(s):  
Sudheer Sudheer ◽  
M. A. Quraishi

The inhibition effect of three aryl pyrazole pyridine derivatives (APPs) against the corrosion of copper in 0.5 M HCl has been investigated by electrochemical impedance, potentiodynamic polarization measurements and quantum chemical methods.


Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2107 ◽  
Author(s):  
Zhili Gong ◽  
Shini Peng ◽  
Xiaomei Huang ◽  
Lanzhou Gao

The anti-corrosion inhibition effect of itraconazole on copper (Cu) in 0.5 M H2SO4 is observed with variety of experimental methods, including electrochemical measurement, surface morphology analysis, and theoretical calculations. These experimental results all confirm that itraconazole exhibits excellent anti-corrosion performance in the certain temperatures range (298 K–313 K) for copper in sulfuric acid solution. In addition, corresponding adsorption isothermal models were used to fit the adsorption behavior of itraconazole on the copper surface. The results show that the Langmuir adsorption model agrees best with the experimental results. The adsorption of itraconazole on the copper surface belongs to chemical and physical adsorption.


Electrochem ◽  
2020 ◽  
Vol 1 (2) ◽  
pp. 188-199 ◽  
Author(s):  
Avni Berisha

The corrosion of mild steel in aqueous perchloric acid solution was studied in the presence and absence of four different pyridine derivatives. Electrochemical measurements point out that these molecules inhibit the corrosion of mild steel by acting as mixed inhibitors. The adsorbed molecules act as a barrier that prevents the oxidation of the metal and the hydrogen evolution reaction at the mild steel surface. Molecular insights vis-à-vis the corrosion process were acquired by the use of Density Functional Theory (DFT), Molecular Dynamics, and Monte Carlo calculations. Monte Carlo and Molecular Dynamic simulation were used to understand at the molecular level the adsorption ability of the studied molecules onto Fe(110) surface. The experimental results and theoretical calculations provided important support for the understanding of the corrosion inhibition mechanism expressed by the pyridine molecules.


2013 ◽  
Vol 52 (29) ◽  
pp. 9709-9718 ◽  
Author(s):  
Ali Döner ◽  
Ayşe Ongun Yüce ◽  
Gülfeza Kardaş

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