Mathematical, electrochemical, spectroscopic and microscopic monitoring of the adsorption effect of expired drugs on zinc corrosion in 3.5% NaCl solution
Because of its unique properties, zinc is widely used in many industries, including medical devices, electronics, and automotive components, but it is susceptible to corrosion, especially in salty environments. In this context, the inhibitory efficacy of two environmentally friendly expired drugs, g...
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Elsevier
2025-01-01
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| Series: | Results in Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211715624007021 |
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| author | Arafat Toghan Omar K. Alduaij Nada Alqarni Emad M. Masoud Hanan Alhussain Ayman M. Mostafa Ahmed A. Farag Ahmed Fawzy |
| author_facet | Arafat Toghan Omar K. Alduaij Nada Alqarni Emad M. Masoud Hanan Alhussain Ayman M. Mostafa Ahmed A. Farag Ahmed Fawzy |
| author_sort | Arafat Toghan |
| collection | DOAJ |
| description | Because of its unique properties, zinc is widely used in many industries, including medical devices, electronics, and automotive components, but it is susceptible to corrosion, especially in salty environments. In this context, the inhibitory efficacy of two environmentally friendly expired drugs, gatifloxacin (Gat) and levofloxacin (Lev), on zinc corrosion in 3.5 % NaCl solution was investigated using several techniques at different temperatures. Kinetic and thermodynamic evaluations confirmed that the adsorption strength of these compounds on the metal surface plays an effective role in their inhibitory capacity, and this certainly depends on their chemical structure. The inhibition efficiencies (% IEs) were calculated to be 87 % and 89 % for Gat and Lev using 500 mg/L of drug and at 298 K, respectively. Potentiodynamic polarization (PDP) studies have classified these drugs as anodic-type inhibitors. Adsorption assessments have shown that it is a physical process following the Langmuir isotherm. Electrochemical impedance spectroscopy (EIS) experiments have demonstrated good adhesion and stability of the protective film on the metal surface resulting from the adsorption of these compounds. Inhibition mechanisms have also been provided. Response surface methodology (RSM) analysis was used to analyze the data and predict the response. The experimental results of all the techniques used and the statistical and computational analysis were in remarkable agreement with each other. |
| format | Article |
| id | doaj-art-2ab36b1b76ae4d499d5c714e0c84c65e |
| institution | Kabale University |
| issn | 2211-7156 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Chemistry |
| spelling | doaj-art-2ab36b1b76ae4d499d5c714e0c84c65e2025-01-29T05:00:54ZengElsevierResults in Chemistry2211-71562025-01-0113102006Mathematical, electrochemical, spectroscopic and microscopic monitoring of the adsorption effect of expired drugs on zinc corrosion in 3.5% NaCl solutionArafat Toghan0Omar K. Alduaij1Nada Alqarni2Emad M. Masoud3Hanan Alhussain4Ayman M. Mostafa5Ahmed A. Farag6Ahmed Fawzy7Chemistry Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia; Chemistry Department, Faculty of Science, South Valley University, Qena 83523, Egypt; Corresponding authors.Chemistry Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi ArabiaDepartment of Chemistry, College of Sciences, University of Bisha, Bisha 61922, P.O. Box 551, Saudi ArabiaDepartment of Chemistry, Faculty of Science, Islamic University of Madinah, 42351 Madinah, Saudi Arabia; Corresponding authors.Chemistry Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi ArabiaDepartment of Physics, College of Science, Qassim University, P.O. Box 6644, Buraydah Almolaydah 51452, Saudi ArabiaEgyptian Petroleum Research Institute (EPRI), 11727 Cairo, Egypt; Corresponding authors.Chemistry Department, Faculty of Science, Assiut University, Assiut 71516, Egypt; Corresponding authors.Because of its unique properties, zinc is widely used in many industries, including medical devices, electronics, and automotive components, but it is susceptible to corrosion, especially in salty environments. In this context, the inhibitory efficacy of two environmentally friendly expired drugs, gatifloxacin (Gat) and levofloxacin (Lev), on zinc corrosion in 3.5 % NaCl solution was investigated using several techniques at different temperatures. Kinetic and thermodynamic evaluations confirmed that the adsorption strength of these compounds on the metal surface plays an effective role in their inhibitory capacity, and this certainly depends on their chemical structure. The inhibition efficiencies (% IEs) were calculated to be 87 % and 89 % for Gat and Lev using 500 mg/L of drug and at 298 K, respectively. Potentiodynamic polarization (PDP) studies have classified these drugs as anodic-type inhibitors. Adsorption assessments have shown that it is a physical process following the Langmuir isotherm. Electrochemical impedance spectroscopy (EIS) experiments have demonstrated good adhesion and stability of the protective film on the metal surface resulting from the adsorption of these compounds. Inhibition mechanisms have also been provided. Response surface methodology (RSM) analysis was used to analyze the data and predict the response. The experimental results of all the techniques used and the statistical and computational analysis were in remarkable agreement with each other.http://www.sciencedirect.com/science/article/pii/S2211715624007021Zinc corrosionExpired drugsEco-friendly inhibitorsAdsorptionRSM optimization |
| spellingShingle | Arafat Toghan Omar K. Alduaij Nada Alqarni Emad M. Masoud Hanan Alhussain Ayman M. Mostafa Ahmed A. Farag Ahmed Fawzy Mathematical, electrochemical, spectroscopic and microscopic monitoring of the adsorption effect of expired drugs on zinc corrosion in 3.5% NaCl solution Results in Chemistry Zinc corrosion Expired drugs Eco-friendly inhibitors Adsorption RSM optimization |
| title | Mathematical, electrochemical, spectroscopic and microscopic monitoring of the adsorption effect of expired drugs on zinc corrosion in 3.5% NaCl solution |
| title_full | Mathematical, electrochemical, spectroscopic and microscopic monitoring of the adsorption effect of expired drugs on zinc corrosion in 3.5% NaCl solution |
| title_fullStr | Mathematical, electrochemical, spectroscopic and microscopic monitoring of the adsorption effect of expired drugs on zinc corrosion in 3.5% NaCl solution |
| title_full_unstemmed | Mathematical, electrochemical, spectroscopic and microscopic monitoring of the adsorption effect of expired drugs on zinc corrosion in 3.5% NaCl solution |
| title_short | Mathematical, electrochemical, spectroscopic and microscopic monitoring of the adsorption effect of expired drugs on zinc corrosion in 3.5% NaCl solution |
| title_sort | mathematical electrochemical spectroscopic and microscopic monitoring of the adsorption effect of expired drugs on zinc corrosion in 3 5 nacl solution |
| topic | Zinc corrosion Expired drugs Eco-friendly inhibitors Adsorption RSM optimization |
| url | http://www.sciencedirect.com/science/article/pii/S2211715624007021 |
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