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Prof. MARIA LUISA Saladino
STEBICEF Department, University of Palermo, Italy

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Research Keywords & Expertise

0 Polymeric Nanocomposites
0 Luminescent Nanoparticles
0 Mesoporous silica materials
0 Controlled release systems
0 Innovative materials for conservation of cultural heritage

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Controlled release systems

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Journal article
Published: 22 June 2021 in Applied Sciences
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Hydrophobic treatment is one of the most important interventions usually carried out for the conservation of stone artefacts and monuments. The study here reported aims to answer a general question about how two polymers confer different protective performance. Two fluorinated-based polymer formulates applied on samples of Cusa’s stone confer a different level of water repellence and water vapour permeability. The observed protection action is here explained on the basis of chemico-physical interactions. The distribution of the polymer in the pore network was investigated using scanning electron microscopy and X-ray microscopy. The interactions between the stone substrate and the protective agents were investigated by means of solid state NMR spectroscopy. The ss-NMR findings reveal no significant changes in the chemical neighbourhood of the observed nuclei of each protective agent when applied onto the stone surface and provide information on the changes in the organization and dynamics of the studied systems, as well as on the mobility of polymer chains. This allowed us to explain the different macroscopic behaviours provided by each protective agent to the stone substrate.

ACS Style

Veronica Ciaramitaro; Alberto Spinella; Francesco Armetta; Roberto Scaffaro; Emmanuel Gulino; George Kourousias; Alessandra Gianoncelli; Eugenio Caponetti; Maria Saladino. A New Methodological Approach to Correlate Protective and Microscopic Properties by Soft X-ray Microscopy and Solid State NMR Spectroscopy: The Case of Cusa’s Stone. Applied Sciences 2021, 11, 5767 .

AMA Style

Veronica Ciaramitaro, Alberto Spinella, Francesco Armetta, Roberto Scaffaro, Emmanuel Gulino, George Kourousias, Alessandra Gianoncelli, Eugenio Caponetti, Maria Saladino. A New Methodological Approach to Correlate Protective and Microscopic Properties by Soft X-ray Microscopy and Solid State NMR Spectroscopy: The Case of Cusa’s Stone. Applied Sciences. 2021; 11 (13):5767.

Chicago/Turabian Style

Veronica Ciaramitaro; Alberto Spinella; Francesco Armetta; Roberto Scaffaro; Emmanuel Gulino; George Kourousias; Alessandra Gianoncelli; Eugenio Caponetti; Maria Saladino. 2021. "A New Methodological Approach to Correlate Protective and Microscopic Properties by Soft X-ray Microscopy and Solid State NMR Spectroscopy: The Case of Cusa’s Stone." Applied Sciences 11, no. 13: 5767.

Short communication
Published: 17 March 2021 in Spectrochimica Acta Part B: Atomic Spectroscopy
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In this work we report an X-ray fluorescence spectroscopy (XRF) study combined with a multivariate approach allowing to detect compositional differences and similarities among the alloys used in realization of silver collection of San Gennaro items collection. The San Gennaro treasure in Naples (Italy) represents, in fact, one of the most important silver collections in the world. The classification of the collection items is very complex, not only for the large number of objects, but also in consideration that between 1600 and 1700, in Naples, more than 350 laboratories were active, most of them specialized in specific art of work. As a consequence, a given collection object could be composed by various silver pieces that were produced by different laboratories. We applied a multivariate analysis on the XRF measurements data set to find a classification criterion based on the alloy elemental composition. Results showed that the collection items, as a whole or parts of it, can be divided into four large groups characterized by their different Ag/Cu ratio.

ACS Style

F. Armetta; V. Mollica Nardo; S. Trusso; M.L. Saladino; A. Arcovito; E. Cosio; P. Jorio; R.C. Ponterio. The silver collection of San Gennaro treasure (Neaples): A multivariate statistic approach applied to X-ray fluorescence data. Spectrochimica Acta Part B: Atomic Spectroscopy 2021, 180, 106171 .

AMA Style

F. Armetta, V. Mollica Nardo, S. Trusso, M.L. Saladino, A. Arcovito, E. Cosio, P. Jorio, R.C. Ponterio. The silver collection of San Gennaro treasure (Neaples): A multivariate statistic approach applied to X-ray fluorescence data. Spectrochimica Acta Part B: Atomic Spectroscopy. 2021; 180 ():106171.

Chicago/Turabian Style

F. Armetta; V. Mollica Nardo; S. Trusso; M.L. Saladino; A. Arcovito; E. Cosio; P. Jorio; R.C. Ponterio. 2021. "The silver collection of San Gennaro treasure (Neaples): A multivariate statistic approach applied to X-ray fluorescence data." Spectrochimica Acta Part B: Atomic Spectroscopy 180, no. : 106171.

Journal article
Published: 13 March 2021 in International Journal of Molecular Sciences
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Graphene coating on the cobalt-chromium alloy was optimized and successfully carried out by a cold-wall chemical vapor deposition (CW-CVD) method. A uniform layer of graphene for a large area of the Co-Cr alloy (discs of 10 mm diameter) was confirmed by Raman mapping coated area and analyzing specific G and 2D bands; in particular, the intensity ratio and the number of layers were calculated. The effect of the CW-CVD process on the microstructure and the morphology of the Co-Cr surface was investigated by scanning X-ray photoelectron microscope (SPEM), atomic force microscopy (AFM), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). Nanoindentation and scratch tests were performed to determine mechanical properties of Co-Cr disks. The results of microbiological tests indicate that the studied Co-Cr alloys covered with a graphene layer did not show a pro-coagulant effect. The obtained results confirm the possibility of using the developed coating method in medical applications, in particular in the field of cardiovascular diseases.

ACS Style

Łukasz Wasyluk; Vitalii Boiko; Marta Markowska; Mariusz Hasiak; Maria Saladino; Dariusz Hreniak; Matteo Amati; Luca Gregoratti; Patrick Zeller; Dariusz Biały; Jacek Arkowski; Magdalena Wawrzyńska. Graphene Coating Obtained in a Cold-Wall CVD Process on the Co-Cr Alloy (L-605) for Medical Applications. International Journal of Molecular Sciences 2021, 22, 2917 .

AMA Style

Łukasz Wasyluk, Vitalii Boiko, Marta Markowska, Mariusz Hasiak, Maria Saladino, Dariusz Hreniak, Matteo Amati, Luca Gregoratti, Patrick Zeller, Dariusz Biały, Jacek Arkowski, Magdalena Wawrzyńska. Graphene Coating Obtained in a Cold-Wall CVD Process on the Co-Cr Alloy (L-605) for Medical Applications. International Journal of Molecular Sciences. 2021; 22 (6):2917.

Chicago/Turabian Style

Łukasz Wasyluk; Vitalii Boiko; Marta Markowska; Mariusz Hasiak; Maria Saladino; Dariusz Hreniak; Matteo Amati; Luca Gregoratti; Patrick Zeller; Dariusz Biały; Jacek Arkowski; Magdalena Wawrzyńska. 2021. "Graphene Coating Obtained in a Cold-Wall CVD Process on the Co-Cr Alloy (L-605) for Medical Applications." International Journal of Molecular Sciences 22, no. 6: 2917.

Journal article
Published: 08 January 2021 in Scientific Reports
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Co-doped Ce3+, Cr3+ and Pr3+ yttrium–aluminium–gallium garnet powders of various sizes were obtained by co-precipitation method. The microstructure and morphology were investigated by XRPD, TEM and gas porosimetry. The luminescence properties were studied by excitation and emission spectra, quantum yield and decay times. Thermoluminescence measurements were performed to evaluate the activation energy, traps redistribution and frequency factor. Limitation in the energy transfer between dopant ions in the small particles, traps depth and surface defects were considered and investigated as responsible for the quenching of persistent luminescence. The phosphors annealed at 1100 °C show the optimal persistent luminescence and nano-particle size.

ACS Style

Vitalii Boiko; Zhengfa Dai; Marta Markowska; Cristina Leonelli; Cecilia Mortalò; Francesco Armetta; Federica Ursi; Giorgio Nasillo; Maria Luisa Saladino; Dariusz Hreniak. Particle size-related limitations of persistent phosphors based on the doped Y3Al2Ga3O12 system. Scientific Reports 2021, 11, 1 -14.

AMA Style

Vitalii Boiko, Zhengfa Dai, Marta Markowska, Cristina Leonelli, Cecilia Mortalò, Francesco Armetta, Federica Ursi, Giorgio Nasillo, Maria Luisa Saladino, Dariusz Hreniak. Particle size-related limitations of persistent phosphors based on the doped Y3Al2Ga3O12 system. Scientific Reports. 2021; 11 (1):1-14.

Chicago/Turabian Style

Vitalii Boiko; Zhengfa Dai; Marta Markowska; Cristina Leonelli; Cecilia Mortalò; Francesco Armetta; Federica Ursi; Giorgio Nasillo; Maria Luisa Saladino; Dariusz Hreniak. 2021. "Particle size-related limitations of persistent phosphors based on the doped Y3Al2Ga3O12 system." Scientific Reports 11, no. 1: 1-14.

Research article
Published: 03 December 2020 in Journal of Chemical Education
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This article highlights the multianalytical study of exuded liquid from an ancient Egyptian sealed alabaster vase by Master’s students in an applied chemistry for cultural heritage course. Master students are introduced to the field of Archaeometry that see the collaboration of experts in different areas of research such as conservators, curators of museums, physicists, chemists, etc. The sample is a residue exuded on the linen strip sealing an ancient Egyptian alabaster vase (inventory number S.8448) from the collection of the Museo Egizio in Turin (Italy). The students start to plan the noninvasive investigation by X-ray fluorescence (XRF), transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy (EDS) for the inorganic compounds characterization, followed by the extraction of the organic components (such as oils, fats, and waxes) to be analyzed by high-resolution 1H and 13C nuclear magnetic resonance (NMR) spectroscopy and 2D NMR correlation spectroscopy (COSY), heteronuclear single quantum coherence (HSQC), and long-range heteronuclear correlation (HMBC) techniques and by gas chromatography coupled with mass spectrometry (GC/MS). Reference standards, spectral databases, and published data on similar artifacts served as the basis for the interpretation of the instrumental results. The approach was introduced in the course of Applied Chemistry for Cultural Heritage for Master students in Archaeology (University of Palermo, Italy), where the need is to know how to approach the scientific investigation together with the conservation scientists and how to manage with a very low amount of sample. Pedagogically, the approach introduces students to the main techniques currently used in the field of Archaeometry while reinforcing fundamental concepts in sample collecting and multicomponent microsample analysis. This interdisciplinary approach provides a unique experience that demonstrates chemistry’s broad applicability outside of the traditional laboratory. Students are guided to identify the inorganic and organic components of the exudate liquid: the first one is ascribable to clay minerals iron oxides, which could impart the brown color to the sample; the second one is ascribed to triglycerides of various kinds, which probably comes from vegetable oil.

ACS Style

G. Festa; M. L. Saladino; V. Mollica Nardo; F. Armetta; V. Renda; G. Nasillo; R. Pitonzo; A. Spinella; M. Borla; E. Ferraris; V. Turina; R. C. Ponterio. Identifying the Unknown Content of an Ancient Egyptian Sealed Alabaster Vase from Kha and Merit’s Tomb Using Multiple Techniques and Multicomponent Sample Analysis in an Interdisciplinary Applied Chemistry Course. Journal of Chemical Education 2020, 98, 461 -468.

AMA Style

G. Festa, M. L. Saladino, V. Mollica Nardo, F. Armetta, V. Renda, G. Nasillo, R. Pitonzo, A. Spinella, M. Borla, E. Ferraris, V. Turina, R. C. Ponterio. Identifying the Unknown Content of an Ancient Egyptian Sealed Alabaster Vase from Kha and Merit’s Tomb Using Multiple Techniques and Multicomponent Sample Analysis in an Interdisciplinary Applied Chemistry Course. Journal of Chemical Education. 2020; 98 (2):461-468.

Chicago/Turabian Style

G. Festa; M. L. Saladino; V. Mollica Nardo; F. Armetta; V. Renda; G. Nasillo; R. Pitonzo; A. Spinella; M. Borla; E. Ferraris; V. Turina; R. C. Ponterio. 2020. "Identifying the Unknown Content of an Ancient Egyptian Sealed Alabaster Vase from Kha and Merit’s Tomb Using Multiple Techniques and Multicomponent Sample Analysis in an Interdisciplinary Applied Chemistry Course." Journal of Chemical Education 98, no. 2: 461-468.

Journal article
Published: 28 November 2020 in Progress in Organic Coatings
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The Temple G of the Archaeological Park of Selinunte (Italy), the largest in Europe, is one of the most impressive temples in the Magna Grecia. Today, it is completely destroyed due to a strong earthquake occurred in the Middle Ages. The used stone is a calcarenite coming from the ancient and renowned quarries of Cusa near the acropolis. This work comes from the today’s proposal of Temple G anastylosis. The goal of the work is to provide the results relating the protective effectiveness of three polymer formulations, appropriately selected, on stone samples taken from the “Capitello” quarry, part of “Cusa quarries”. The formulations functionality was deployed by adding TiO2 nanoparticles to provide a self-cleaning property that was evaluated by methylene blue photo-degradation test. Water absorption by capillarity and water vapour permeability tests as well as colorimetric measurements, were performed according with UNI EN regulations to evaluate the performances of the protective treatments, also in presence of TiO2 nanoparticles. The effect of TiO2 nanoparticles on the polymer stability was investigated by Infrared Spectroscopy. The study highlighted the pros and consof the changes caused by the protective agents on the stone surface providing useful information for a conscious choice of products to be used for an efficacious conservation treatment of Cusa stone.

ACS Style

Eugenio Caponetti; Veronica Ciaramitaro; Francesco Armetta; Vincenzo Renda; Laura Ercoli; Maria Luisa Saladino. Effectiveness of some protective and self-cleaning treatments: a challenge for the conservation of temple G stone in Selinunte. Progress in Organic Coatings 2020, 151, 106020 .

AMA Style

Eugenio Caponetti, Veronica Ciaramitaro, Francesco Armetta, Vincenzo Renda, Laura Ercoli, Maria Luisa Saladino. Effectiveness of some protective and self-cleaning treatments: a challenge for the conservation of temple G stone in Selinunte. Progress in Organic Coatings. 2020; 151 ():106020.

Chicago/Turabian Style

Eugenio Caponetti; Veronica Ciaramitaro; Francesco Armetta; Vincenzo Renda; Laura Ercoli; Maria Luisa Saladino. 2020. "Effectiveness of some protective and self-cleaning treatments: a challenge for the conservation of temple G stone in Selinunte." Progress in Organic Coatings 151, no. : 106020.

Original research
Published: 15 November 2020 in Cellulose
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This work follows a previous one dealing with the state of conservation study of the wooden part of the roman Acqualadroni rostrum soon after its finding in the seabed of Acqualadroni (Messina, Italy). The archaeological survey and recovery were particularly relevant since this artefact is one of the two rostrums, nowadays known, found together with its wooden part. Following the recovery, it was consolidated by immersion in a melamine-formaldehyde resin (Kauramin) aqueous solution for eight months at the “Centro di Restauro del Legno Bagnato” (Pisa, Italy). The present investigation is aimed to determine at microscopic scale the wood state of conservation and to highlight interactions of the consolidant with wood components, by using solid-state NMR spectroscopy ten years after the consolidation treatment. Sampling by coring was exceptionally authorized, and the wood core was divided into seven aliquots as a function of depth. 13C cross-polarization magic angle spinning (13C{1H} CP-MAS NMR) spectra and variable contact time (VCT) experiments have been carried out to determine the cellulose crystallinity index, the lignin condensation degree and the holocellulose-lignin ratio. The interactions between the resin and the wood components were highlighted by T1ρH relaxation times determination and two-dimensional 13C–1H correlation (FSLG CP HETCOR) NMR experiments. Findings revealed specific interactions between the aromatic part of the resin and the lignin, as well as a network of hydrogen bonds involving all components of the system.

ACS Style

Alberto Spinella; Delia Francesca Chillura Martino; Maria Luisa Saladino; Federica Sammartino; Francesco Caruso; Eugenio Caponetti. Solid state NMR investigation of the roman Acqualadroni rostrum: tenth year assessment of the consolidation treatment of the wooden part. Cellulose 2020, 28, 1025 -1038.

AMA Style

Alberto Spinella, Delia Francesca Chillura Martino, Maria Luisa Saladino, Federica Sammartino, Francesco Caruso, Eugenio Caponetti. Solid state NMR investigation of the roman Acqualadroni rostrum: tenth year assessment of the consolidation treatment of the wooden part. Cellulose. 2020; 28 (2):1025-1038.

Chicago/Turabian Style

Alberto Spinella; Delia Francesca Chillura Martino; Maria Luisa Saladino; Federica Sammartino; Francesco Caruso; Eugenio Caponetti. 2020. "Solid state NMR investigation of the roman Acqualadroni rostrum: tenth year assessment of the consolidation treatment of the wooden part." Cellulose 28, no. 2: 1025-1038.

Journal article
Published: 01 September 2020 in Journal of Catalysis
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Mesoporous silica nanoparticles (MSN) were used as a platform to design novel active materials for the catalytic and photocatalytic epoxidation of limonene. Binary systems comprised of TiO2 and MSN were used for the catalytic reaction when doped with manganese, and for the photocatalytic reaction when functionalised with hexadecyl chains or imidazolinyl groups. All of the MSN based systems were synthesized by condensation in emulsion. A thorough characterization of the powders has been performed by means of Inductively Coupled Plasma – Optical Emission Spectroscopy (ICP-OES), X-ray diffraction (XRD), FT-IR, Raman and EPR Spectroscopy, Fluorescence and diffuse reflectance UV–vis (DRS) Spectroscopy, gas Porosimetry, and Transmission Electron Microscopy (TEM). The obtained morphological and structural information have been related to the catalytic and photocatalytic performances for the epoxidation of limonene. MSN support finely distributes the manganese active centres in the case of the catalytic epoxidation, while acts as functional co-catalyst in the case of the photocatalytic reaction. Upon careful optimization of the experimental conditions, the catalytic process afforded conversion and selectivity values up to 90 and 84%, respectively, while the photocatalytic process provided in the best case conversions up to 80% and selectivity values of ca. 50%. Both the catalytic and photocatalytic approaches were performed under relatively mild experimental conditions and use molecular oxygen as the oxidant. Therefore, both of them represent promising green alternatives to traditional methods for the industrially relevant production of limonene epoxide. This compound, in fact, is the starting material for the production of poly(limonene carbonates), biopolymers with outstanding properties which are promising substitutes of oil derived polycarbonates.

ACS Style

Alessandro Gottuso; Angela Köckritz; Maria Luisa Saladino; Francesco Armetta; Claudio De Pasquale; Giorgio Nasillo; Francesco Parrino. Catalytic and photocatalytic epoxidation of limonene: Using mesoporous silica nanoparticles as functional support for a Janus-like approach. Journal of Catalysis 2020, 391, 202 -211.

AMA Style

Alessandro Gottuso, Angela Köckritz, Maria Luisa Saladino, Francesco Armetta, Claudio De Pasquale, Giorgio Nasillo, Francesco Parrino. Catalytic and photocatalytic epoxidation of limonene: Using mesoporous silica nanoparticles as functional support for a Janus-like approach. Journal of Catalysis. 2020; 391 ():202-211.

Chicago/Turabian Style

Alessandro Gottuso; Angela Köckritz; Maria Luisa Saladino; Francesco Armetta; Claudio De Pasquale; Giorgio Nasillo; Francesco Parrino. 2020. "Catalytic and photocatalytic epoxidation of limonene: Using mesoporous silica nanoparticles as functional support for a Janus-like approach." Journal of Catalysis 391, no. : 202-211.

Original research article
Published: 21 August 2020 in Frontiers in Chemistry
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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.

ACS Style

Alessandro Presentato; Francesco Armetta; Alberto Spinella; Delia Francesca Chillura Martino; Rosa Alduina; Maria Luisa Saladino. Formulation of Mesoporous Silica Nanoparticles for Controlled Release of Antimicrobials for Stone Preventive Conservation. Frontiers in Chemistry 2020, 8, 1 .

AMA Style

Alessandro Presentato, Francesco Armetta, Alberto Spinella, Delia Francesca Chillura Martino, Rosa Alduina, Maria Luisa Saladino. Formulation of Mesoporous Silica Nanoparticles for Controlled Release of Antimicrobials for Stone Preventive Conservation. Frontiers in Chemistry. 2020; 8 ():1.

Chicago/Turabian Style

Alessandro Presentato; Francesco Armetta; Alberto Spinella; Delia Francesca Chillura Martino; Rosa Alduina; Maria Luisa Saladino. 2020. "Formulation of Mesoporous Silica Nanoparticles for Controlled Release of Antimicrobials for Stone Preventive Conservation." Frontiers in Chemistry 8, no. : 1.

Journal article
Published: 20 June 2020 in Optical Materials
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Pr3+,Yb3+ activated SrF2 nanoparticles synthesized by low-temperature hydrothermal method were studied. The composition and size of nanoparticles were intentionally changed by controlling synthesis conditions. After structural and morphological characterization, the spectroscopic properties of the nanoparticles were analyzed in the visible and near infrared spectra ranges. The results show correlation between the gradual change of the amount of carboxylate and hydroxyl moieties on the nanoparticle surface, varied by the size nanoparticles and the quenching of the luminescence. The size-related amount of surface quenchers is strongly connected to the decrease of the downconversion efficiency.

ACS Style

Karina Grzeszkiewicz; G. Lucchini; M. Ptak; Maria Luisa Saladino; D. Hreniak; A. Speghini. Effect of surface impurities on downconversion luminescence of Pr3+, Yb3+ activated SrF2 nanoparticles. Optical Materials 2020, 107, 110020 .

AMA Style

Karina Grzeszkiewicz, G. Lucchini, M. Ptak, Maria Luisa Saladino, D. Hreniak, A. Speghini. Effect of surface impurities on downconversion luminescence of Pr3+, Yb3+ activated SrF2 nanoparticles. Optical Materials. 2020; 107 ():110020.

Chicago/Turabian Style

Karina Grzeszkiewicz; G. Lucchini; M. Ptak; Maria Luisa Saladino; D. Hreniak; A. Speghini. 2020. "Effect of surface impurities on downconversion luminescence of Pr3+, Yb3+ activated SrF2 nanoparticles." Optical Materials 107, no. : 110020.

Journal article
Published: 09 June 2020 in Optical Materials
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Synthesis of Y3Al2Ga3O12 garnet (YAGG) nanophosphors co-doped with Ce3+, Cr3+, and Nd3+ ions by co-precipitation is reported. The effect of Ce3+ concentration on the structure of garnet and on optical properties including persistent luminescence was investigated. The X-ray diffraction measurements showed that single garnet phase was obtained. The contraction of the crystallites size was observed with increasing the cerium concentration. The combined emission of three used co-dopants together allows to extend persistent luminescence spectral range. The photoluminescence, excitation and persistent luminescence spectra were collected and the optimal Ce3+ concentration for the highest efficiency conversion of UV and blue light into the red and the near infrared emission was determined. Based on thermoluminescence data, the effect of Ce3+ concentration on the traps redistribution was also investigated.

ACS Style

V. Boiko; M. Markowska; L. Consentino; Maria Luisa Saladino; D. Hreniak. Effect of Ce3+ concentration on persistent luminescence of YAGG:Ce3+,Cr3+,Nd3+ nanophosphors obtained by the co-precipitation method. Optical Materials 2020, 107, 109956 .

AMA Style

V. Boiko, M. Markowska, L. Consentino, Maria Luisa Saladino, D. Hreniak. Effect of Ce3+ concentration on persistent luminescence of YAGG:Ce3+,Cr3+,Nd3+ nanophosphors obtained by the co-precipitation method. Optical Materials. 2020; 107 ():109956.

Chicago/Turabian Style

V. Boiko; M. Markowska; L. Consentino; Maria Luisa Saladino; D. Hreniak. 2020. "Effect of Ce3+ concentration on persistent luminescence of YAGG:Ce3+,Cr3+,Nd3+ nanophosphors obtained by the co-precipitation method." Optical Materials 107, no. : 109956.

Journal article
Published: 23 April 2020 in Materials
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Sore, infected wounds are a major clinical issue, and there is thus an urgent need for novel biomaterials as multifunctional constituents for dressings. A set of biocomposites was prepared by solvent casting using different concentrations of carboxymethylcellulose (CMC) and exfoliated graphene oxide (Exf-GO) as a filler. Exf-GO was first obtained by the strong oxidation and exfoliation of graphite. The structural, morphological and mechanical properties of the composites (CMCx/Exf-GO) were evaluated, and the obtained composites were homogenous, transparent and brownish in color. The results confirmed that Exf-GO may be homogeneously dispersed in CMC. It was found that the composite has an inhibitory activity against the Gram-positive Staphylococcus aureus, but not against Gram-negative Pseudomonas aeruginosa. At the same time, it does not exhibit any cytotoxic effect on normal fibroblasts.

ACS Style

Maria Luisa Saladino; Marta Markowska; Clara Carmone; Patrizia Cancemi; Rosa Alduina; Alessandro Presentato; Roberto Scaffaro; Dariusz Biały; Mariusz Hasiak; Dariusz Hreniak; Magdalena Wawrzyńska. Graphene Oxide Carboxymethylcellulose Nanocomposite for Dressing Materials. Materials 2020, 13, 1980 .

AMA Style

Maria Luisa Saladino, Marta Markowska, Clara Carmone, Patrizia Cancemi, Rosa Alduina, Alessandro Presentato, Roberto Scaffaro, Dariusz Biały, Mariusz Hasiak, Dariusz Hreniak, Magdalena Wawrzyńska. Graphene Oxide Carboxymethylcellulose Nanocomposite for Dressing Materials. Materials. 2020; 13 (8):1980.

Chicago/Turabian Style

Maria Luisa Saladino; Marta Markowska; Clara Carmone; Patrizia Cancemi; Rosa Alduina; Alessandro Presentato; Roberto Scaffaro; Dariusz Biały; Mariusz Hasiak; Dariusz Hreniak; Magdalena Wawrzyńska. 2020. "Graphene Oxide Carboxymethylcellulose Nanocomposite for Dressing Materials." Materials 13, no. 8: 1980.

Journal article
Published: 17 April 2020 in Optical Materials
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The Y3Al2Ga3O12:Ce3+,Cr3+,Pr3+ (YAGG) persistent luminescent ceramics were sintered in static air (without airflow) and followed by hot isostatic pressing (HIP) treatment. The low aggregated and relatively narrow particle-size distributed starting powders, with the particle size of about 50 nm, were synthesized by using Pechini method and then annealed at 900 °C for 16 h in static air. Compared to nano-phosphors, the ceramics exhibited more intense and longer persistent luminescence (PersL). The photoluminescence and PersL spectra were found to have a similar shape, indicating that the emitting centers for photoluminescence and PersL processes were same. The intense Ce3+ and Cr3+ bands, as well as weak Pr3+ narrow peaks, were observed under and after blue light irradiation, due to energy transfer from donor (Ce3+) to emitting centers (Cr3+ and Pr3+). The annealing treatment in static air significantly decreased the intensity and shortened the duration of the PersL of the ceramic, due to the elimination of oxygen vacancies, which played an important role of energy traps during PersL process.

ACS Style

Zhengfa Dai; Vitalii Boiko; Karina Grzeszkiewicz; Maria Luisa Saladino; Jiang Li; Dariusz Hreniak. Effect of annealing treatment on the persistent luminescence of Y3Al2Ga3O12:Ce3+,Cr3+,Pr3+ ceramics. Optical Materials 2020, 105, 109888 .

AMA Style

Zhengfa Dai, Vitalii Boiko, Karina Grzeszkiewicz, Maria Luisa Saladino, Jiang Li, Dariusz Hreniak. Effect of annealing treatment on the persistent luminescence of Y3Al2Ga3O12:Ce3+,Cr3+,Pr3+ ceramics. Optical Materials. 2020; 105 ():109888.

Chicago/Turabian Style

Zhengfa Dai; Vitalii Boiko; Karina Grzeszkiewicz; Maria Luisa Saladino; Jiang Li; Dariusz Hreniak. 2020. "Effect of annealing treatment on the persistent luminescence of Y3Al2Ga3O12:Ce3+,Cr3+,Pr3+ ceramics." Optical Materials 105, no. : 109888.

Journal article
Published: 13 January 2020 in Progress in Organic Coatings
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In this paper the effect of the application of four kinds of polymer dispersions containing nanoparticles, used as protectives, on two type of carbonatic lithotypes, White Noto and Comiso stone, is reported. The study was conducted by analysing the contribution of each component of the system. After the structural characterization of the coating itself, the performance of those colloidal systems has been studied upon application on the calcarenites, preferring non-invasive techniques and microdestructive techniques. Effect of the nanoparticles presence on hydrorepellency and roughness of the stone surface and on chromatic changes has also been considered. The tests conducted have proven that although some of the formulations present some issues for their usage on White Noto stone, all four formulations induce an effective waterproofing action on Comiso stones, even in presence of TiO2 and SiO2 nanoparticles.

ACS Style

Vincenzo Renda; Monica Alvarez De Buergo; Maria Luisa Saladino; Eugenio Caponetti. Assessment of protection treatments for carbonatic stone using nanocomposite coatings. Progress in Organic Coatings 2020, 141, 105515 .

AMA Style

Vincenzo Renda, Monica Alvarez De Buergo, Maria Luisa Saladino, Eugenio Caponetti. Assessment of protection treatments for carbonatic stone using nanocomposite coatings. Progress in Organic Coatings. 2020; 141 ():105515.

Chicago/Turabian Style

Vincenzo Renda; Monica Alvarez De Buergo; Maria Luisa Saladino; Eugenio Caponetti. 2020. "Assessment of protection treatments for carbonatic stone using nanocomposite coatings." Progress in Organic Coatings 141, no. : 105515.

Full paper
Published: 25 October 2019 in Chemistry – A European Journal
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A versatile synthetic strategy for the preparation of multi‐metallic oxy‐nitrides has been designed and here exemplarily discussed considering the preparation of nanoscaled zinc‐gallium oxy‐nitrides and zinc‐gallium‐indium oxy‐nitrides, two important photo‐catalysts of new generation, proven to be active in key energy related processes from pollutant decomposition to overall water splitting. The synthesis presented here allows the preparation of small nanoparticles (less than 20 nm in diameter), well‐defined in size and shape, yet highly crystalline and the highest surface area reported so far (up to ~80 m 2 /g). X‐rays diffraction study shows that the final materials is not a mixture of the single oxides but a distinctive compound. The photocatalytic properties of the oxy‐nitrides have been tested toward the decomposition of an organic dye (as model reaction for the decomposition of air pollutants), showing better photocatalytic performances than the corresponding pure phases (reaction constant 0.22 h ‐1 ), while almost no reaction was observed in absence of catalyst. Photo‐catalysts have been also tested in H 2 evolution (semi‐reaction of the water splitting process) with results comparable to the best literature values, but living more room for further improvement.

ACS Style

Tingke Rao; Maria Luisa Saladino; Yuanxing Fang; Xinchen Wang; Cristina Giordano. Multimetallic Oxynitrides Nanoparticles for a New Generation of Photocatalysts. Chemistry – A European Journal 2019, 25, 16676 -16682.

AMA Style

Tingke Rao, Maria Luisa Saladino, Yuanxing Fang, Xinchen Wang, Cristina Giordano. Multimetallic Oxynitrides Nanoparticles for a New Generation of Photocatalysts. Chemistry – A European Journal. 2019; 25 (72):16676-16682.

Chicago/Turabian Style

Tingke Rao; Maria Luisa Saladino; Yuanxing Fang; Xinchen Wang; Cristina Giordano. 2019. "Multimetallic Oxynitrides Nanoparticles for a New Generation of Photocatalysts." Chemistry – A European Journal 25, no. 72: 16676-16682.

Original article
Published: 01 September 2019 in Emergent Materials
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The preparation method of a polymer composite and the filler loading are amongst the factors that influence the properties of the final composites. This article studies the effect of these factors on the thermal stability and thermal degradation kinetics of poly(methyl methacrylate) (PMMA)/mesoporous silica (MCM-41) composites filled with small amounts of MCM-41. The PMMA/MCM-41 composites were prepared through in situ polymerisation and melt mixing methods, with MCM-41 loadings of 0.1, 0.3, and 0.5 wt.%. The presence of MCM-41 increased the thermal stability of PMMA/MCM-41 composites prepared by melt mixing, but in the case of the in situ polymerised samples, the MCM-41 accelerated the degradation of the polymer. As a result, the activation energy was low and less energy was required to initiate and propagate the degradation process of these composites. The small-angle X-ray scattering (SAXS) measurements showed that the preparation method of the composites had no influence on the pore size of MCM-41, but the PMMAs used in the two methods both had shorter chains than the MCM-41 pore size. This allowed the polymer chains to be trapped inside the pores of the filler and be immobilised, as was observed from nuclear magnetic resonance (NMR) spectroscopy. The immobilisation of the polymer chains was more significant in the in situ polymerised samples.

ACS Style

M. A. Sibeko; Maria Luisa Saladino; F. Armetta; A. Spinella; A. S. Luyt. Effect of preparation method on the properties of poly(methyl methacrylate)/mesoporous silica composites. Emergent Materials 2019, 2, 363 -370.

AMA Style

M. A. Sibeko, Maria Luisa Saladino, F. Armetta, A. Spinella, A. S. Luyt. Effect of preparation method on the properties of poly(methyl methacrylate)/mesoporous silica composites. Emergent Materials. 2019; 2 (3):363-370.

Chicago/Turabian Style

M. A. Sibeko; Maria Luisa Saladino; F. Armetta; A. Spinella; A. S. Luyt. 2019. "Effect of preparation method on the properties of poly(methyl methacrylate)/mesoporous silica composites." Emergent Materials 2, no. 3: 363-370.

Journal article
Published: 01 September 2019 in Spectrochimica Acta Part B: Atomic Spectroscopy
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V. Renda; Viviana Mollica Nardo; G. Anastasio; E. Caponetti; C.S. Vasi; Maria Luisa Saladino; F. Armetta; S. Trusso; R.C. Ponterio. A multivariate statistical approach of X-ray fluorescence characterization of a large collection of reverse glass paintings. Spectrochimica Acta Part B: Atomic Spectroscopy 2019, 159, 1 .

AMA Style

V. Renda, Viviana Mollica Nardo, G. Anastasio, E. Caponetti, C.S. Vasi, Maria Luisa Saladino, F. Armetta, S. Trusso, R.C. Ponterio. A multivariate statistical approach of X-ray fluorescence characterization of a large collection of reverse glass paintings. Spectrochimica Acta Part B: Atomic Spectroscopy. 2019; 159 ():1.

Chicago/Turabian Style

V. Renda; Viviana Mollica Nardo; G. Anastasio; E. Caponetti; C.S. Vasi; Maria Luisa Saladino; F. Armetta; S. Trusso; R.C. Ponterio. 2019. "A multivariate statistical approach of X-ray fluorescence characterization of a large collection of reverse glass paintings." Spectrochimica Acta Part B: Atomic Spectroscopy 159, no. : 1.

Journal article
Published: 12 August 2019 in Heritage
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The characterization of materials used in the archaeological field needs an experimental approach in order to avoid the destruction or perturbation of artworks. In order to afford this purpose, a multi-analytical spectroscopic approach is regularly used. We combined non-invasive analysis by using handheld spectroscopic instrumentations (mainly XRF and Raman spectrometers) in order to characterize the wall painting preserved in the church of S. Maria delle Palate at Halaesa Arconidea archeological site (Tusa, Messina, Italy). The aim of the work is the characterization of the nature of pigments used for the realization of the wall painting. The wall painting, probably representing St. Francis in the act of receiving the stigmata, has been subject to cleaning and restoration. Thanks to use of in situ measurement, we have identified hematite and goethite for the red and yellow respectively, and lazurite for the blue. In addition, some relevant information about the black pigment, the technique used for the realization and the conservation state were also obtained. The results obtained during the diagnostic campaign have been a support for the work of restorers. For the first time, the wall painting has been studied, increasing the knowledge of Halaesa Arconidea archaeological site.

ACS Style

Viviana Mollica Nardo; Vincenzo Renda; Sara Bonanno; Francesco Parrotta; Gianfranco Anastasio; Eugenio Caponetti; Maria Luisa Saladino; Cirino Salvatore Vasi; Rosina Celeste Ponterio. Non-Invasive Investigation of Pigments of Wall Painting in S. Maria Delle Palate di Tusa (Messina, Italy). Heritage 2019, 2, 2398 -2407.

AMA Style

Viviana Mollica Nardo, Vincenzo Renda, Sara Bonanno, Francesco Parrotta, Gianfranco Anastasio, Eugenio Caponetti, Maria Luisa Saladino, Cirino Salvatore Vasi, Rosina Celeste Ponterio. Non-Invasive Investigation of Pigments of Wall Painting in S. Maria Delle Palate di Tusa (Messina, Italy). Heritage. 2019; 2 (3):2398-2407.

Chicago/Turabian Style

Viviana Mollica Nardo; Vincenzo Renda; Sara Bonanno; Francesco Parrotta; Gianfranco Anastasio; Eugenio Caponetti; Maria Luisa Saladino; Cirino Salvatore Vasi; Rosina Celeste Ponterio. 2019. "Non-Invasive Investigation of Pigments of Wall Painting in S. Maria Delle Palate di Tusa (Messina, Italy)." Heritage 2, no. 3: 2398-2407.

Journal article
Published: 07 August 2019 in Heritage
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The “Trionfo della morte” is a detached fresco painting dated at the half of the XV century. Its history is strictly connected with the history of Palermo and it is considered a symbol of the late Gothic period. Some small areas of the fresco were analyzed using a combination of non-invasive techniques and hand-held instrumentations (multispectral imaging analysis, X-ray fluorescence (XRF), and IR spectroscopy). The characterization of the nature of pigments used in its realization and restoration works was performed and some indications about its conservation state were obtained. More interestingly, some hidden details were revealed on the mysterious painting. They constitute additional evidence of the preciousness of the fresco.

ACS Style

Maria Francesca Alberghina; Salvatore Schiavone; Caterina Greco; Maria Luisa Saladino; Francesco Armetta; Vincenzo Renda; Eugenio Caponetti. How Many Secret Details Could a Systematic Multi-Analytical Study Reveal About the Mysterious Fresco Trionfo della Morte? Heritage 2019, 2, 2370 -2383.

AMA Style

Maria Francesca Alberghina, Salvatore Schiavone, Caterina Greco, Maria Luisa Saladino, Francesco Armetta, Vincenzo Renda, Eugenio Caponetti. How Many Secret Details Could a Systematic Multi-Analytical Study Reveal About the Mysterious Fresco Trionfo della Morte? Heritage. 2019; 2 (3):2370-2383.

Chicago/Turabian Style

Maria Francesca Alberghina; Salvatore Schiavone; Caterina Greco; Maria Luisa Saladino; Francesco Armetta; Vincenzo Renda; Eugenio Caponetti. 2019. "How Many Secret Details Could a Systematic Multi-Analytical Study Reveal About the Mysterious Fresco Trionfo della Morte?" Heritage 2, no. 3: 2370-2383.

Research paper
Published: 04 July 2019 in Journal of Nanoparticle Research
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The paper reports the influence of cerium content and heat treatment on composition, structural features and optical properties of nanostructures constituted by a layer of Ce:YAG nanoparticles on glass wool (Ce:[email protected]). The Ce:[email protected] nanostructures were obtained embedding the glass wool (GW) in a gel-like precursor and calcining at 800 and 900 °C. Gel-like precursor of urea glass route (UGR) method has been used to prepare both nanostructures and Ce:YAG nanoparticles prepared as references. Structural properties were investigated by using X-ray diffraction (XRD) and infrared spectroscopy (IR). Results showed that the composition of the final products strongly depends both on the cerium content and temperature. Optical properties of best materials have been investigated in order to verify their suitability for lighting applications. Obtained results show relatively high quantum efficiency for Ce:[email protected] treated at 800 °C comparing with the Ce:YAG nanoparticles obtained at the same temperature confirming the improved luminescence properties of the nanoparticles when they are applied on GW surface.

ACS Style

Francesco Armetta; Chiara Defilippi; Cristina Giordano; Eugenio Caponetti; Lukasz Marciniak; Dariusz Hreniak; Maria Luisa Saladino. Influence of cerium content and heat treatment on Ce:[email protected] wool nanostructures. Journal of Nanoparticle Research 2019, 21, 152 .

AMA Style

Francesco Armetta, Chiara Defilippi, Cristina Giordano, Eugenio Caponetti, Lukasz Marciniak, Dariusz Hreniak, Maria Luisa Saladino. Influence of cerium content and heat treatment on Ce:[email protected] wool nanostructures. Journal of Nanoparticle Research. 2019; 21 (7):152.

Chicago/Turabian Style

Francesco Armetta; Chiara Defilippi; Cristina Giordano; Eugenio Caponetti; Lukasz Marciniak; Dariusz Hreniak; Maria Luisa Saladino. 2019. "Influence of cerium content and heat treatment on Ce:[email protected] wool nanostructures." Journal of Nanoparticle Research 21, no. 7: 152.