Cerium Dioxide Nanoparticles as Smart Carriers for Self-Healing Coatings
The utilization of self-healing cerium dioxide nanoparticles (CeO<sub>2</sub>), modified with organic corrosion inhibitors (dodecylamine (DDA) and n-methylthiourea (NMTU)), in epoxy coating is an efficient strategy for enhancing the protection of the epoxy coating and increasing its life...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-04-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/10/4/791 |
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| author | Sehrish Habib Eman Fayyad Muddasir Nawaz Adnan Khan Rana A. Shakoor Ramazan Kahraman Aboubakr Abdullah |
| author_facet | Sehrish Habib Eman Fayyad Muddasir Nawaz Adnan Khan Rana A. Shakoor Ramazan Kahraman Aboubakr Abdullah |
| author_sort | Sehrish Habib |
| collection | DOAJ |
| description | The utilization of self-healing cerium dioxide nanoparticles (CeO<sub>2</sub>), modified with organic corrosion inhibitors (dodecylamine (DDA) and n-methylthiourea (NMTU)), in epoxy coating is an efficient strategy for enhancing the protection of the epoxy coating and increasing its lifetime. Fourier transform infrared (FTIR) spectroscopy analysis was used to confirm the loading and presence of inhibitors in the nanoparticles. Thermal gravimetric analysis (TGA) measurement studies revealed the amount of 25% and 29.75% <i>w/w</i> for NMTU and DDA in the nanoparticles, respectively. The pH sensitive and self-release behavior of modified CeO<sub>2</sub> nanoparticles is confirmed through UV-vis spectroscopy and Zeta potential. It was observed, through scanning electron microscopy (SEM), that a protective layer had been formed on the defect site separating the steel surface from the external environment and healed the artificially created scratch. This protective film played a vital role in the corrosion inhibition of steel by preventing the aggressiveness of Cl<sup>−</sup> in the solution. Electrochemical impedance spectroscopy (EIS) measurements exhibited the exceptional corrosion inhibition efficiency, reaching 99.8% and 95.7% for the modified coating with DDA and NMTU, respectively, after five days of immersion time. |
| first_indexed | 2024-03-10T20:21:03Z |
| format | Article |
| id | doaj.art-33e79162c1d442cfacc34c31fabed27b |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T20:21:03Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-33e79162c1d442cfacc34c31fabed27b2023-11-19T22:11:20ZengMDPI AGNanomaterials2079-49912020-04-0110479110.3390/nano10040791Cerium Dioxide Nanoparticles as Smart Carriers for Self-Healing CoatingsSehrish Habib0Eman Fayyad1Muddasir Nawaz2Adnan Khan3Rana A. Shakoor4Ramazan Kahraman5Aboubakr Abdullah6Center for Advanced Materials (CAM), Qatar University, Doha 2713, QatarCenter for Advanced Materials (CAM), Qatar University, Doha 2713, QatarCenter for Advanced Materials (CAM), Qatar University, Doha 2713, QatarCenter for Advanced Materials (CAM), Qatar University, Doha 2713, QatarCenter for Advanced Materials (CAM), Qatar University, Doha 2713, QatarDepartment of Chemical Engineering, Qatar University, Doha 2713, QatarCenter for Advanced Materials (CAM), Qatar University, Doha 2713, QatarThe utilization of self-healing cerium dioxide nanoparticles (CeO<sub>2</sub>), modified with organic corrosion inhibitors (dodecylamine (DDA) and n-methylthiourea (NMTU)), in epoxy coating is an efficient strategy for enhancing the protection of the epoxy coating and increasing its lifetime. Fourier transform infrared (FTIR) spectroscopy analysis was used to confirm the loading and presence of inhibitors in the nanoparticles. Thermal gravimetric analysis (TGA) measurement studies revealed the amount of 25% and 29.75% <i>w/w</i> for NMTU and DDA in the nanoparticles, respectively. The pH sensitive and self-release behavior of modified CeO<sub>2</sub> nanoparticles is confirmed through UV-vis spectroscopy and Zeta potential. It was observed, through scanning electron microscopy (SEM), that a protective layer had been formed on the defect site separating the steel surface from the external environment and healed the artificially created scratch. This protective film played a vital role in the corrosion inhibition of steel by preventing the aggressiveness of Cl<sup>−</sup> in the solution. Electrochemical impedance spectroscopy (EIS) measurements exhibited the exceptional corrosion inhibition efficiency, reaching 99.8% and 95.7% for the modified coating with DDA and NMTU, respectively, after five days of immersion time.https://www.mdpi.com/2079-4991/10/4/791nanocomposite coatingself-healingcorrosion inhibitorelectrochemical impedance spectroscopynanoparticles |
| spellingShingle | Sehrish Habib Eman Fayyad Muddasir Nawaz Adnan Khan Rana A. Shakoor Ramazan Kahraman Aboubakr Abdullah Cerium Dioxide Nanoparticles as Smart Carriers for Self-Healing Coatings Nanomaterials nanocomposite coating self-healing corrosion inhibitor electrochemical impedance spectroscopy nanoparticles |
| title | Cerium Dioxide Nanoparticles as Smart Carriers for Self-Healing Coatings |
| title_full | Cerium Dioxide Nanoparticles as Smart Carriers for Self-Healing Coatings |
| title_fullStr | Cerium Dioxide Nanoparticles as Smart Carriers for Self-Healing Coatings |
| title_full_unstemmed | Cerium Dioxide Nanoparticles as Smart Carriers for Self-Healing Coatings |
| title_short | Cerium Dioxide Nanoparticles as Smart Carriers for Self-Healing Coatings |
| title_sort | cerium dioxide nanoparticles as smart carriers for self healing coatings |
| topic | nanocomposite coating self-healing corrosion inhibitor electrochemical impedance spectroscopy nanoparticles |
| url | https://www.mdpi.com/2079-4991/10/4/791 |
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