Corrosion inhibition properties of pyrazolylindolenine compounds on copper surface in acidic media
Background: The corrosion inhibition performance of pyrazolylindolenine compounds, namely 4-(3,3-dimethyl-3H-indol-2-yl)-pyrazole-1-carbothioamide (InPzTAm), 4-(3,3-dimethyl-3H-indol-2-yl)-1H-pyrazole-1-carbothiohydrazide (InPzTH) and 3,3-dimethyl-2-(1-phenyl-1H-pyrazol-4-yl)-3H-indole (InPzPh),) on...
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| Format: | Article |
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2012
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| author | Ebadi, M. Ali, H.M. Khaledi, H. Basirun, Wan Jefrey |
| author_facet | Ebadi, M. Ali, H.M. Khaledi, H. Basirun, Wan Jefrey |
| author_sort | Ebadi, M. |
| collection | UM |
| description | Background: The corrosion inhibition performance of pyrazolylindolenine compounds, namely 4-(3,3-dimethyl-3H-indol-2-yl)-pyrazole-1-carbothioamide (InPzTAm), 4-(3,3-dimethyl-3H-indol-2-yl)-1H-pyrazole-1-carbothiohydrazide (InPzTH) and 3,3-dimethyl-2-(1-phenyl-1H-pyrazol-4-yl)-3H-indole (InPzPh),) on copper in 1M HCl solution is investigated by electrochemical impedance spectroscopy (EIS), open circuit potential (OCP) and linear scan voltammetry (LSV) techniques. Results: The results show that the corrosion rate of copper is diminished by the compounds with the inhibition strength in the order of: InPzTAm[modifier letter right arrowhead] InPzTH [modifier letter right arrowhead] InPzPh. The corrosion inhibition efficiencies for the three inhibitors are 94.0, 91.4 and 79.3, for InPzTAm, InPzTH and InPzPh respectively with the same inhibitor concentration (2 mM). Conclusion: From the EIS, OCP and LSV results it was concluded that pyrazolylindolenine compounds with S-atom (with an amine group) have illustrated better corrosion inhibition performance compared to hydrazine and phenyl group. |
| first_indexed | 2024-03-06T05:18:55Z |
| format | Article |
| id | um.eprints-7535 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:18:55Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | um.eprints-75352019-01-30T01:29:14Z http://eprints.um.edu.my/7535/ Corrosion inhibition properties of pyrazolylindolenine compounds on copper surface in acidic media Ebadi, M. Ali, H.M. Khaledi, H. Basirun, Wan Jefrey QD Chemistry Background: The corrosion inhibition performance of pyrazolylindolenine compounds, namely 4-(3,3-dimethyl-3H-indol-2-yl)-pyrazole-1-carbothioamide (InPzTAm), 4-(3,3-dimethyl-3H-indol-2-yl)-1H-pyrazole-1-carbothiohydrazide (InPzTH) and 3,3-dimethyl-2-(1-phenyl-1H-pyrazol-4-yl)-3H-indole (InPzPh),) on copper in 1M HCl solution is investigated by electrochemical impedance spectroscopy (EIS), open circuit potential (OCP) and linear scan voltammetry (LSV) techniques. Results: The results show that the corrosion rate of copper is diminished by the compounds with the inhibition strength in the order of: InPzTAm[modifier letter right arrowhead] InPzTH [modifier letter right arrowhead] InPzPh. The corrosion inhibition efficiencies for the three inhibitors are 94.0, 91.4 and 79.3, for InPzTAm, InPzTH and InPzPh respectively with the same inhibitor concentration (2 mM). Conclusion: From the EIS, OCP and LSV results it was concluded that pyrazolylindolenine compounds with S-atom (with an amine group) have illustrated better corrosion inhibition performance compared to hydrazine and phenyl group. 2012 Article PeerReviewed Ebadi, M. and Ali, H.M. and Khaledi, H. and Basirun, Wan Jefrey (2012) Corrosion inhibition properties of pyrazolylindolenine compounds on copper surface in acidic media. Chemistry Central Journal, 6 (1). p. 163. ISSN 1752153X , DOI https://doi.org/10.1186/1752-153X-6-163 <https://doi.org/10.1186/1752-153X-6-163>. http://www.scopus.com/inward/record.url?eid=2-s2.0-84871672011&partnerID=40&md5=c26140d80708920a50ddc9b7352cc418 10.1186/1752-153X-6-163 |
| spellingShingle | QD Chemistry Ebadi, M. Ali, H.M. Khaledi, H. Basirun, Wan Jefrey Corrosion inhibition properties of pyrazolylindolenine compounds on copper surface in acidic media |
| title | Corrosion inhibition properties of pyrazolylindolenine compounds on copper surface in acidic media |
| title_full | Corrosion inhibition properties of pyrazolylindolenine compounds on copper surface in acidic media |
| title_fullStr | Corrosion inhibition properties of pyrazolylindolenine compounds on copper surface in acidic media |
| title_full_unstemmed | Corrosion inhibition properties of pyrazolylindolenine compounds on copper surface in acidic media |
| title_short | Corrosion inhibition properties of pyrazolylindolenine compounds on copper surface in acidic media |
| title_sort | corrosion inhibition properties of pyrazolylindolenine compounds on copper surface in acidic media |
| topic | QD Chemistry |
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