Adsorption characteristics of green 5-arylaminomethylene pyrimidine- 2,4,6-triones on mild steel surface in acidic medium: Experimental and computational approach
Results in Physics, 8 (2018) 657–670
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Elsevier B.V
2020
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| Acceso en liña: | https://doi.org/10.1016/j.rinp.2018.01.008 https://ir.oauife.edu.ng/handle/123456789/5072 |
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| author | Chandrabhan, Verma Lukman.O, Olasunkanmi Eno.E, Ebenso M.A, Quraishi |
| author_facet | Chandrabhan, Verma Lukman.O, Olasunkanmi Eno.E, Ebenso M.A, Quraishi |
| author_sort | Chandrabhan, Verma |
| collection | DSpace |
| description | Results in Physics, 8 (2018) 657–670 |
| format | Journal |
| id | oai:ir.oauife.edu.ng:123456789-5072 |
| institution | My University |
| language | English |
| publishDate | 2020 |
| publisher | Elsevier B.V |
| record_format | dspace |
| spelling | oai:ir.oauife.edu.ng:123456789-50722023-05-13T11:10:19Z Adsorption characteristics of green 5-arylaminomethylene pyrimidine- 2,4,6-triones on mild steel surface in acidic medium: Experimental and computational approach Chandrabhan, Verma Lukman.O, Olasunkanmi Eno.E, Ebenso M.A, Quraishi Langmuir adsorption isotherm Theoretical studies Acid solutions Multicomponent reactions Green corrosion inhibitors Results in Physics, 8 (2018) 657–670 The effect of electron withdrawing nitro (–NO2) and electron releasing hydroxyl (–OH) groups on corrosion inhibition potentials of 5-arylaminomethylenepyrimidine-2,4,6-trione (AMP) had been studied. Four AMPs tagged AMP-1, AMP-2, AMP-3 and AMP-4 were studied for their ability to inhibit mild steel corrosion in 1 M HCl using experimental and theoretical methods. Gravimetric results showed that inhibition efficiency of the studied inhibitors increases with increasing concentration. The results further revealed that that electron withdrawing nitro (–NO2) group decreases the inhibition efficiency of AMP, while electron donating hydroxyl (–OH) group increases the inhibition efficiency of AMP. SEM and AFM studies showed that the studied compounds inhibit mild steel corrosion by adsorbing at the metal/electrolyte interface and their adsorption obeyed the Temkin adsorption isotherm. Potentiodynamic polarization study revealed that studied inhibitors act as mixed type inhibitors with predominant effect on cathodic reaction. The inhibitive strength of the compounds might have direct relationship electron donating ability of the molecules as revealed by quantum chemical parameters. The order of interaction energies derived from Monte Carlo simulations is AMP-4 > AMP-3 > AMP-2 > AMP-1, which is in agreement with the order of inhibition efficiencies obtained from experimental measurements. 2020-01-17T09:27:53Z 2020-01-17T09:27:53Z 2018-01-10 Journal https://doi.org/10.1016/j.rinp.2018.01.008 https://ir.oauife.edu.ng/handle/123456789/5072 en application/pdf Elsevier B.V |
| spellingShingle | Langmuir adsorption isotherm Theoretical studies Acid solutions Multicomponent reactions Green corrosion inhibitors Chandrabhan, Verma Lukman.O, Olasunkanmi Eno.E, Ebenso M.A, Quraishi Adsorption characteristics of green 5-arylaminomethylene pyrimidine- 2,4,6-triones on mild steel surface in acidic medium: Experimental and computational approach |
| title | Adsorption characteristics of green 5-arylaminomethylene pyrimidine- 2,4,6-triones on mild steel surface in acidic medium: Experimental and computational approach |
| title_full | Adsorption characteristics of green 5-arylaminomethylene pyrimidine- 2,4,6-triones on mild steel surface in acidic medium: Experimental and computational approach |
| title_fullStr | Adsorption characteristics of green 5-arylaminomethylene pyrimidine- 2,4,6-triones on mild steel surface in acidic medium: Experimental and computational approach |
| title_full_unstemmed | Adsorption characteristics of green 5-arylaminomethylene pyrimidine- 2,4,6-triones on mild steel surface in acidic medium: Experimental and computational approach |
| title_short | Adsorption characteristics of green 5-arylaminomethylene pyrimidine- 2,4,6-triones on mild steel surface in acidic medium: Experimental and computational approach |
| title_sort | adsorption characteristics of green 5 arylaminomethylene pyrimidine 2 4 6 triones on mild steel surface in acidic medium experimental and computational approach |
| topic | Langmuir adsorption isotherm Theoretical studies Acid solutions Multicomponent reactions Green corrosion inhibitors |
| url | https://doi.org/10.1016/j.rinp.2018.01.008 https://ir.oauife.edu.ng/handle/123456789/5072 |
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