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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 (BASEL, SWITZERLAND) 2023; 13:2543. [PMID: 37764572 PMCID: PMC10537782 DOI: 10.3390/nano13182543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 09/05/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023]
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.
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Affiliation(s)
- Eleonora Marconi
- LASR3 Surface Analysis Laboratory Roma Tre, Via della Vasca Navale 84, 00146 Rome, Italy;
- National Institute for Nuclear Physics, INFN Roma, Tre Via della Vasca Navale 84, 00146 Rome, Italy
- Department of Sciences, Roma Tre University, Via della Vasca Navale 84, 00146 Rome, Italy;
| | - Igor Luisetto
- Department of Energy Technologies, ENEA C.R. Casaccia DTE-PCU-IPSE, S.P. 081 Via Anguillarese 301, S.M. di Galeria, 00123 Rome, Italy;
| | - Gabriella Di Carlo
- Institute for the Study of Nanostructured Materials, National Research Council (ISMN-CNR), Via Salaria km 29.3, Monterotondo, 00015 Rome, Italy; (G.D.C.); (M.P.S.)
| | - Maria Paola Staccioli
- Institute for the Study of Nanostructured Materials, National Research Council (ISMN-CNR), Via Salaria km 29.3, Monterotondo, 00015 Rome, Italy; (G.D.C.); (M.P.S.)
| | - Simonetta Tuti
- Department of Sciences, Roma Tre University, Via della Vasca Navale 84, 00146 Rome, Italy;
| | - Luca Tortora
- LASR3 Surface Analysis Laboratory Roma Tre, Via della Vasca Navale 84, 00146 Rome, Italy;
- National Institute for Nuclear Physics, INFN Roma, Tre Via della Vasca Navale 84, 00146 Rome, Italy
- Department of Sciences, Roma Tre University, Via della Vasca Navale 84, 00146 Rome, Italy;
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Olivieri F, Scherillo F, Castaldo R, Cocca M, Squillace A, Gentile G, Lavorgna M. Effectiveness of Mesoporous Silica Nanoparticles Functionalized with Benzoyl Chloride in pH-Responsive Anticorrosion Polymer Coatings. ACS APPLIED POLYMER MATERIALS 2023; 5:5917-5925. [PMID: 37588083 PMCID: PMC10426329 DOI: 10.1021/acsapm.3c00585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 06/29/2023] [Indexed: 08/18/2023]
Abstract
Smart polymer coatings embedding stimuli-responsive corrosion inhibitor nanocarriers are commonly exploited, in the literature, for the development of high-performance active coatings. In this work, high-surface-area amino-functionalized mesoporous silica nanoparticles (MSN-NH2) were developed with a one-step synthesis process and then functionalized with benzoyl chloride (MSN-BC) through a reaction with amino groups. MSN-BC are able to release benzoic acid (BA) in acid and alkaline conditions as a result of the hydrolysis of the pH-sensitive amide bond. MSN-BC were embedded in polymer coatings to exploit the pH-dependent release of corrosion-inhibiting BA. After an in-depth characterization of the developed functional nanoparticles and of their pH-dependent release kinetics of BA, MSN-BC were embedded in an acrylic matrix, realizing coatings for the corrosion protection of aluminum AA2024 alloys. Results demonstrate the effectiveness of the nanoparticles' porous structure for a high loading of the anticorrosive active agent BA and the long-lasting efficiency of the coating for the corrosion protection of aluminum alloys, as validated by morphological and electrochemical impedance spectroscopy (EIS) measurements. EIS experiments were carried out with up to 21 days of exposure to a corrosive environment, revealing the potentialities of the acrylic coatings embedding MSN-BC for the protection of aluminum alloys.
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Affiliation(s)
- Federico Olivieri
- Institute
of Polymers Composites and Biomaterials, National Research Council of Italy, Via Campi Flegrei, 34, 80078 Pozzuoli, NA, Italy
| | - Fabio Scherillo
- Department
of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy
| | - Rachele Castaldo
- Institute
of Polymers Composites and Biomaterials, National Research Council of Italy, Via Campi Flegrei, 34, 80078 Pozzuoli, NA, Italy
| | - Mariacristina Cocca
- Institute
of Polymers Composites and Biomaterials, National Research Council of Italy, Via Campi Flegrei, 34, 80078 Pozzuoli, NA, Italy
| | - Antonino Squillace
- Department
of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy
| | - Gennaro Gentile
- Institute
of Polymers Composites and Biomaterials, National Research Council of Italy, Via Campi Flegrei, 34, 80078 Pozzuoli, NA, Italy
| | - Marino Lavorgna
- Institute
of Polymers Composites and Biomaterials, National Research Council of Italy, P. le Enrico Fermi 1, 80055 Portici, NA, Italy
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Messina E, Pascucci M, Riccucci C, Boccaccini F, Blanco-Valera MT, Garcia-Lodeiro I, Ingo GM, Di Carlo G. Smart Inhibition Action of Amino Acid-Modified Layered Double Hydroxide and Its Application on Carbon Steel. Molecules 2023; 28:5863. [PMID: 37570833 PMCID: PMC10421257 DOI: 10.3390/molecules28155863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/04/2023] [Accepted: 07/07/2023] [Indexed: 08/13/2023] Open
Abstract
Surface impregnation of concrete structures with a migrating corrosion inhibitor is a promising and non-invasive technique for increasing the lifetime of existing structures that already show signs of corrosion attack. The main requirement for inhibitors is their ability to diffuse the rebar at a sufficient rate to protect steel. The use of smart nanocontainers such as layered double hydroxides (LDH) to store corrosion inhibitors significantly increases efficiency by providing an active protection from chloride-induced corrosion. The addition of LDH to reinforced mortar can also improve the compactness and mechanical properties of this matrix. Here, we report the synthesis of a magnesium-aluminum LDH storing glutamine amino acid as a green inhibitor (labeled as Mg-Al-Gln), which can be used as a migrating inhibitor on mortar specimens. The corrosion behavior of the specimens was determined via electrochemical techniques based on measurements of corrosion potential and electrochemical impedance spectroscopy. A cell containing a 3.5% NaCl solution was applied to the mortar surface to promote the corrosion of embedded rebars. The specimens treated with Mg-Al-Gln presented an improved corrosion protection performance, exhibiting an increase in polarization resistance (Rp) compared to the reference specimens without an inhibitor (NO INH). This effect is a consequence of a double mechanism of protection/stimuli-responsive release of glutamine and the removal of corrosive chloride species from the medium.
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Affiliation(s)
- Elena Messina
- Institute for the Study of Nanostructured Materials (ISMN), National Research Council (CNR), SP35d 9, 00010 Montelibretti, Italy; (M.P.); (C.R.); (F.B.); (G.M.I.)
| | - Marianna Pascucci
- Institute for the Study of Nanostructured Materials (ISMN), National Research Council (CNR), SP35d 9, 00010 Montelibretti, Italy; (M.P.); (C.R.); (F.B.); (G.M.I.)
| | - Cristina Riccucci
- Institute for the Study of Nanostructured Materials (ISMN), National Research Council (CNR), SP35d 9, 00010 Montelibretti, Italy; (M.P.); (C.R.); (F.B.); (G.M.I.)
| | - Francesca Boccaccini
- Institute for the Study of Nanostructured Materials (ISMN), National Research Council (CNR), SP35d 9, 00010 Montelibretti, Italy; (M.P.); (C.R.); (F.B.); (G.M.I.)
- Department of Earth Sciences, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Maria Teresa Blanco-Valera
- Eduardo Torrroja Institute for Construction Science—IETCC–CSIC, Serrano Galvache 4, 28033 Madrid, Spain; (M.T.B.-V.); (I.G.-L.)
| | - Ines Garcia-Lodeiro
- Eduardo Torrroja Institute for Construction Science—IETCC–CSIC, Serrano Galvache 4, 28033 Madrid, Spain; (M.T.B.-V.); (I.G.-L.)
| | - Gabriel Maria Ingo
- Institute for the Study of Nanostructured Materials (ISMN), National Research Council (CNR), SP35d 9, 00010 Montelibretti, Italy; (M.P.); (C.R.); (F.B.); (G.M.I.)
| | - Gabriella Di Carlo
- Institute for the Study of Nanostructured Materials (ISMN), National Research Council (CNR), SP35d 9, 00010 Montelibretti, Italy; (M.P.); (C.R.); (F.B.); (G.M.I.)
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Baglioni M, Poggi G, Chelazzi D, Baglioni P. Advanced Materials in Cultural Heritage Conservation. Molecules 2021; 26:molecules26133967. [PMID: 34209620 PMCID: PMC8271397 DOI: 10.3390/molecules26133967] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/25/2021] [Indexed: 11/16/2022] Open
Abstract
Cultural Heritage is a crucial socioeconomic resource; yet, recurring degradation processes endanger its preservation. Serendipitous approaches in restoration practice need to be replaced by systematically addressing conservation issues through the development of advanced materials for the preservation of the artifacts. In the last few decades, materials and colloid science have provided valid solutions to counteract degradation, and we report here the main highlights in the formulation and application of materials and methodologies for the cleaning, protection and consolidation of works of art. Several types of artifacts are addressed, from murals to canvas paintings, metal objects, and paper artworks, comprising both classic and modern/contemporary art. Systems, such as nanoparticles, gels, nanostructured cleaning fluids, composites, and other functional materials, are reviewed. Future perspectives are also commented, outlining open issues and trends in this challenging and exciting field.
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Presentato A, Armetta F, Spinella A, Chillura Martino DF, Alduina R, Saladino ML. Formulation of Mesoporous Silica Nanoparticles for Controlled Release of Antimicrobials for Stone Preventive Conservation. Front Chem 2020; 8:699. [PMID: 32974275 PMCID: PMC7471835 DOI: 10.3389/fchem.2020.00699] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 07/07/2020] [Indexed: 12/21/2022] Open
Abstract
The biotic deterioration of artifacts of archaeological and artistic interest mostly relies on the action of microorganisms capable of thriving under the most disparate environmental conditions. Thus, to attenuate biodeterioration phenomena, biocides can be used by the restorers to prevent or slow down the microbial growth. However, several factors such as biocide half-life, its wash-out because of environmental conditions, and its limited time of action make necessary its application repeatedly, leading to negative economic implications. Sound and successful treatments are represented by controlled release systems (CRSs) based on porous materials. Here, we report on the design and development of a CRS system based on mesoporous silica nanoparticles (MSNs), as a carrier, and loaded with a biocide. MSNs, with a diameter of 55 nm and cylindrical pores of ca. 3-8 nm arranged as parallel arrays concerning the NP diameter, and with 422 m2/g of specific surface area were synthesized by the sol-gel method assisted by oil in water emulsion. Biocide loading and release were carried out in water and monitored by UV-Vis Spectroscopy; in addition, microbiological assay was performed using as control the MCM-41 mesoporous silica loaded with the same biocide. The role of specific supramolecular interaction in regulating the release is discussed. Further, we demonstrated that this innovative formulation was useful in inhibiting the in vitro growth of Kocuria rhizophila, an environmental Gram-positive bacterial strain. Besides, the CRS here prepared reduced the bacterial biomass contaminating a real case study (i.e., stone derived from the Santa Margherita cave located in Sicily, Italy), after several months of treatment thus opening for innovative treatments of deteriorated stone artifacts.
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Affiliation(s)
- Alessandro Presentato
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technology (STEBICEF), University of Palermo, Palermo, Italy
| | - Francesco Armetta
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technology (STEBICEF), University of Palermo, Palermo, Italy
| | - Alberto Spinella
- Advanced Technologies Network (ATeN) Center, University of Palermo, Palermo, Italy
| | - Delia Francesca Chillura Martino
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technology (STEBICEF), University of Palermo, Palermo, Italy.,Advanced Technologies Network (ATeN) Center, University of Palermo, Palermo, Italy
| | - Rosa Alduina
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technology (STEBICEF), University of Palermo, Palermo, Italy
| | - Maria Luisa Saladino
- Department of Biological, Chemical, and Pharmaceutical Sciences and Technology (STEBICEF), University of Palermo, Palermo, Italy
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