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Nanomaterials
Volume 13
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10.3390/nano13182543
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Article

3-APTES on Dendritic Fibrous Mesoporous Silica Nanoparticles for the pH-Controlled Release of Corrosion Inhibitors

by
Eleonora Marconi
1,2,3,
Igor Luisetto
4,
Gabriella Di Carlo
5,
Maria Paola Staccioli
5,
Simonetta Tuti
3 and
Luca Tortora
1,2,3,*
1
LASR3 Surface Analysis Laboratory Roma Tre, Via della Vasca Navale 84, 00146 Rome, Italy
2
National Institute for Nuclear Physics, INFN Roma, Tre Via della Vasca Navale 84, 00146 Rome, Italy
3
Department of Sciences, Roma Tre University, Via della Vasca Navale 84, 00146 Rome, Italy
4
Department of Energy Technologies, ENEA C.R. Casaccia DTE-PCU-IPSE, S.P. 081 Via Anguillarese 301, S.M. di Galeria, 00123 Rome, Italy
5
Institute for the Study of Nanostructured Materials, National Research Council (ISMN-CNR), Via Salaria km 29.3, Monterotondo, 00015 Rome, Italy
*
Author to whom correspondence should be addressed.
Nanomaterials 2023, 13(18), 2543; https://doi.org/10.3390/nano13182543
Submission received: 10 August 2023 / Revised: 5 September 2023 / Accepted: 8 September 2023 / Published: 11 September 2023
(This article belongs to the Special Issue Functional Coatings with Nanostructures: Synthesis, Characterizations and Applications)
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Abstract

Mesoporous silica nanoparticles (MSNPs) are currently used in different fields like catalysis, nanomedicine, and conservation science, taking advantage of their high surface area. Here, we synthesized and functionalized mesoporous dendritic fibrous nanoparticles to realize a smart delivery system of protective agents for metals. Different MSNPs were obtained via the microemulsion method followed by a hydrothermal or refluxing treatment at different w/o ratios, times, and temperatures. Dendritic spherical silica nanoparticles with specific features such as an appropriate size (450 nm), a very large surface area (600 m2 g−1), and a high yield synthesis (86%) were selected for surface modification. The fiber surface of the selected MSNPs was functionalized with 3-aminopropyl triethoxysilane (3-APTES). 3-APTES works as a pH-driven “nanogate”, suppressing the immediate leakage of the total guest molecule load and modulating the release as a function of pH conditions. Surface-modified MSNPs were tested as a reservoir of the most diffused corrosion inhibitors: Mercaptobenzothiazole (MBT) and 1H-Benzotriazole (BTA); their release properties were studied in solutions with pH = 4 and 7. Functionalized and non-functionalized MSNPs showed a good loading efficiency of guest molecules (34–64%) and a pH-dependent release of the corrosion inhibitors on a timescale of several hours.
Keywords: mesoporous silica; nanocarrier; corrosion; 3-APTES; MBT; BTA mesoporous silica; nanocarrier; corrosion; 3-APTES; MBT; BTA

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MDPI and ACS Style

Marconi, E.; Luisetto, I.; Di Carlo, G.; Staccioli, M.P.; Tuti, S.; Tortora, L. 3-APTES on Dendritic Fibrous Mesoporous Silica Nanoparticles for the pH-Controlled Release of Corrosion Inhibitors. Nanomaterials 2023, 13, 2543. https://doi.org/10.3390/nano13182543

AMA Style

Marconi E, Luisetto I, Di Carlo G, Staccioli MP, Tuti S, Tortora L. 3-APTES on Dendritic Fibrous Mesoporous Silica Nanoparticles for the pH-Controlled Release of Corrosion Inhibitors. Nanomaterials. 2023; 13(18):2543. https://doi.org/10.3390/nano13182543

Chicago/Turabian Style

Marconi, Eleonora, Igor Luisetto, Gabriella Di Carlo, Maria Paola Staccioli, Simonetta Tuti, and Luca Tortora. 2023. "3-APTES on Dendritic Fibrous Mesoporous Silica Nanoparticles for the pH-Controlled Release of Corrosion Inhibitors" Nanomaterials 13, no. 18: 2543. https://doi.org/10.3390/nano13182543

APA Style

Marconi, E., Luisetto, I., Di Carlo, G., Staccioli, M. P., Tuti, S., & Tortora, L. (2023). 3-APTES on Dendritic Fibrous Mesoporous Silica Nanoparticles for the pH-Controlled Release of Corrosion Inhibitors. Nanomaterials, 13(18), 2543. https://doi.org/10.3390/nano13182543

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