Synthesis and Electrochemical Evaluation of MSNs-PbAE Nanocontainers for the Controlled Release of Caffeine as a Corrosion Inhibitor
In this paper, a controlled-release system of caffeine as a corrosion inhibitor was obtained by encapsulating it in MCM-41 silica nanoparticles coated with a poly(β-amino ester) (PbAE), a pH-sensible polymer. Encapsulation was verified using Fourier transform infrared spectroscopy (FTIR) and thermog...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Pharmaceutics |
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| Online Access: | https://www.mdpi.com/1999-4923/14/12/2670 |
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| author | Martín Aguirre-Pulido Jorge A. González-Sánchez Luis R. Dzib-Pérez Montserrat Soria-Castro Alejandro Ávila-Ortega William A. Talavera-Pech |
| author_facet | Martín Aguirre-Pulido Jorge A. González-Sánchez Luis R. Dzib-Pérez Montserrat Soria-Castro Alejandro Ávila-Ortega William A. Talavera-Pech |
| author_sort | Martín Aguirre-Pulido |
| collection | DOAJ |
| description | In this paper, a controlled-release system of caffeine as a corrosion inhibitor was obtained by encapsulating it in MCM-41 silica nanoparticles coated with a poly(β-amino ester) (PbAE), a pH-sensible polymer. Encapsulation was verified using Fourier transform infrared spectroscopy (FTIR) and thermogravimetry (TGA). The release of caffeine from the nanocontainers was analyzed in electrolytes with pH values of 4, 5, and 7 using UV–Vis, showing a 21% higher release in acidic electrolytes than in neutral electrolytes, corroborating its pH sensitivity. Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization were used to determine the inhibition mode and efficiency of the encapsulated and free caffeine. The caffeine released from the nanocontainers showed the highest efficiency, which was 85.19%. These results indicate that these nanocontainers could have potential use in smart anticorrosion coating applications. |
| first_indexed | 2024-03-09T15:58:13Z |
| format | Article |
| id | doaj.art-3d3fc4d984924cb485bde7d91db9aa9c |
| institution | Directory Open Access Journal |
| issn | 1999-4923 |
| language | English |
| last_indexed | 2024-03-09T15:58:13Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Pharmaceutics |
| spelling | doaj.art-3d3fc4d984924cb485bde7d91db9aa9c2023-11-24T17:19:59ZengMDPI AGPharmaceutics1999-49232022-11-011412267010.3390/pharmaceutics14122670Synthesis and Electrochemical Evaluation of MSNs-PbAE Nanocontainers for the Controlled Release of Caffeine as a Corrosion InhibitorMartín Aguirre-Pulido0Jorge A. González-Sánchez1Luis R. Dzib-Pérez2Montserrat Soria-Castro3Alejandro Ávila-Ortega4William A. Talavera-Pech5Corrosion Research Center, Autonomous University of Campeche, Avenida Héroe de Nacozari 480, Campeche 24079, MexicoCorrosion Research Center, Autonomous University of Campeche, Avenida Héroe de Nacozari 480, Campeche 24079, MexicoCorrosion Research Center, Autonomous University of Campeche, Avenida Héroe de Nacozari 480, Campeche 24079, MexicoDepartment of Applied Physics, CINVESTAV-IPN Merida Unit, Km 6 Old Road to Progreso, Mérida 97310, MexicoFaculty of Chemical Engineering, Autonomous University of Yucatán (UADY), Periférico Norte Km 33.5, 13615, Chuburna de Hidalgo Inn, Mérida 97203, MexicoCorrosion Research Center, Autonomous University of Campeche, Avenida Héroe de Nacozari 480, Campeche 24079, MexicoIn this paper, a controlled-release system of caffeine as a corrosion inhibitor was obtained by encapsulating it in MCM-41 silica nanoparticles coated with a poly(β-amino ester) (PbAE), a pH-sensible polymer. Encapsulation was verified using Fourier transform infrared spectroscopy (FTIR) and thermogravimetry (TGA). The release of caffeine from the nanocontainers was analyzed in electrolytes with pH values of 4, 5, and 7 using UV–Vis, showing a 21% higher release in acidic electrolytes than in neutral electrolytes, corroborating its pH sensitivity. Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization were used to determine the inhibition mode and efficiency of the encapsulated and free caffeine. The caffeine released from the nanocontainers showed the highest efficiency, which was 85.19%. These results indicate that these nanocontainers could have potential use in smart anticorrosion coating applications.https://www.mdpi.com/1999-4923/14/12/2670MSNs-PbAEnanocontainerscontrolled releasecorrosion inhibitorelectrochemical analysis |
| spellingShingle | Martín Aguirre-Pulido Jorge A. González-Sánchez Luis R. Dzib-Pérez Montserrat Soria-Castro Alejandro Ávila-Ortega William A. Talavera-Pech Synthesis and Electrochemical Evaluation of MSNs-PbAE Nanocontainers for the Controlled Release of Caffeine as a Corrosion Inhibitor Pharmaceutics MSNs-PbAE nanocontainers controlled release corrosion inhibitor electrochemical analysis |
| title | Synthesis and Electrochemical Evaluation of MSNs-PbAE Nanocontainers for the Controlled Release of Caffeine as a Corrosion Inhibitor |
| title_full | Synthesis and Electrochemical Evaluation of MSNs-PbAE Nanocontainers for the Controlled Release of Caffeine as a Corrosion Inhibitor |
| title_fullStr | Synthesis and Electrochemical Evaluation of MSNs-PbAE Nanocontainers for the Controlled Release of Caffeine as a Corrosion Inhibitor |
| title_full_unstemmed | Synthesis and Electrochemical Evaluation of MSNs-PbAE Nanocontainers for the Controlled Release of Caffeine as a Corrosion Inhibitor |
| title_short | Synthesis and Electrochemical Evaluation of MSNs-PbAE Nanocontainers for the Controlled Release of Caffeine as a Corrosion Inhibitor |
| title_sort | synthesis and electrochemical evaluation of msns pbae nanocontainers for the controlled release of caffeine as a corrosion inhibitor |
| topic | MSNs-PbAE nanocontainers controlled release corrosion inhibitor electrochemical analysis |
| url | https://www.mdpi.com/1999-4923/14/12/2670 |
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