Nicotiana tabacum leaf extract protects aluminium alloy AA3003 from acid attack
We investigated leaf extracts of Nicotianatabacum (NT) for corrosion inhibition efficacy on aluminium alloy AA3003 corrosion in 0.1 M HCl, using a combination of experimental and computational techniques. The results revealed that NT effectively protected the alloy surface in the studied environment...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-12-01
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| Series: | Arabian Journal of Chemistry |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535216301150 |
| _version_ | 1818115555118284800 |
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| author | Demian I. Njoku Goddy N. Onuoha Emeka E. Oguzie Kanayo L. Oguzie Adeteju A. Egbedina Akram N. Alshawabkeh |
| author_facet | Demian I. Njoku Goddy N. Onuoha Emeka E. Oguzie Kanayo L. Oguzie Adeteju A. Egbedina Akram N. Alshawabkeh |
| author_sort | Demian I. Njoku |
| collection | DOAJ |
| description | We investigated leaf extracts of Nicotianatabacum (NT) for corrosion inhibition efficacy on aluminium alloy AA3003 corrosion in 0.1 M HCl, using a combination of experimental and computational techniques. The results revealed that NT effectively protected the alloy surface in the studied environment, particularly at higher concentrations, though this effect became subdued with prolonged exposure. Electrochemical results showed that the extract organic matter adsorbed on the Al alloy/solution interface reduced both the anodic and cathodic current densities, with the latter effect being more pronounced. Fourier transform infrared spectroscopy (FTIR) and energy dispersive X-ray spectroscopy (EDX) confirmed the adsorption of NT constituents on the Al alloy surface, while scanning electron microscopy (SEM) and atomic force microscopy confirmed the protective effect of the adsorbed inhibitor layer. Computational simulation of the adsorption of various constituents of the extract on Al (110) surface achieved within the framework of the density functional theory confirmed strong interaction of some extract constituents with Al. Keywords: Aluminium alloy, Corrosion, Inhibition, Electrochemical technique, Adsorption, Molecular dynamics, FTIR, AFM |
| first_indexed | 2024-12-11T04:08:29Z |
| format | Article |
| id | doaj.art-4aa8f4e65c7c4e9889a3276dee5f0133 |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-12-11T04:08:29Z |
| publishDate | 2019-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-4aa8f4e65c7c4e9889a3276dee5f01332022-12-22T01:21:28ZengElsevierArabian Journal of Chemistry1878-53522019-12-0112844664478Nicotiana tabacum leaf extract protects aluminium alloy AA3003 from acid attackDemian I. Njoku0Goddy N. Onuoha1Emeka E. Oguzie2Kanayo L. Oguzie3Adeteju A. Egbedina4Akram N. Alshawabkeh5Electrochemistry and Material Science Research Laboratory, Department of Chemistry, Federal University of Technology Owerri, PMB 1526, Owerri, NigeriaElectrochemistry and Material Science Research Laboratory, Department of Chemistry, Federal University of Technology Owerri, PMB 1526, Owerri, NigeriaElectrochemistry and Material Science Research Laboratory, Department of Chemistry, Federal University of Technology Owerri, PMB 1526, Owerri, Nigeria; Corresponding author.Division of Environmental Electrochemistry, Department of Environmental Technology, Federal University of Technology Owerri, PMB 1526, Owerri, NigeriaDivision of Environmental Electrochemistry, Department of Environmental Technology, Federal University of Technology Owerri, PMB 1526, Owerri, NigeriaDepartment of Civil and Environmental Engineering, Northeastern University, 360 Huntington Ave., Boston, MA 02115, USAWe investigated leaf extracts of Nicotianatabacum (NT) for corrosion inhibition efficacy on aluminium alloy AA3003 corrosion in 0.1 M HCl, using a combination of experimental and computational techniques. The results revealed that NT effectively protected the alloy surface in the studied environment, particularly at higher concentrations, though this effect became subdued with prolonged exposure. Electrochemical results showed that the extract organic matter adsorbed on the Al alloy/solution interface reduced both the anodic and cathodic current densities, with the latter effect being more pronounced. Fourier transform infrared spectroscopy (FTIR) and energy dispersive X-ray spectroscopy (EDX) confirmed the adsorption of NT constituents on the Al alloy surface, while scanning electron microscopy (SEM) and atomic force microscopy confirmed the protective effect of the adsorbed inhibitor layer. Computational simulation of the adsorption of various constituents of the extract on Al (110) surface achieved within the framework of the density functional theory confirmed strong interaction of some extract constituents with Al. Keywords: Aluminium alloy, Corrosion, Inhibition, Electrochemical technique, Adsorption, Molecular dynamics, FTIR, AFMhttp://www.sciencedirect.com/science/article/pii/S1878535216301150 |
| spellingShingle | Demian I. Njoku Goddy N. Onuoha Emeka E. Oguzie Kanayo L. Oguzie Adeteju A. Egbedina Akram N. Alshawabkeh Nicotiana tabacum leaf extract protects aluminium alloy AA3003 from acid attack Arabian Journal of Chemistry |
| title | Nicotiana tabacum leaf extract protects aluminium alloy AA3003 from acid attack |
| title_full | Nicotiana tabacum leaf extract protects aluminium alloy AA3003 from acid attack |
| title_fullStr | Nicotiana tabacum leaf extract protects aluminium alloy AA3003 from acid attack |
| title_full_unstemmed | Nicotiana tabacum leaf extract protects aluminium alloy AA3003 from acid attack |
| title_short | Nicotiana tabacum leaf extract protects aluminium alloy AA3003 from acid attack |
| title_sort | nicotiana tabacum leaf extract protects aluminium alloy aa3003 from acid attack |
| url | http://www.sciencedirect.com/science/article/pii/S1878535216301150 |
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