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Your search keyword '"D’Arienzo, Massimiliano"' showing total 14 results
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14 results on '"D’Arienzo, Massimiliano"'

9. SiO2/Ladder-Like Polysilsesquioxanes Nanocomposite Coatings: Playing with the Hybrid Interface for Tuning Thermal Properties and Wettability

Author

D’Arienzo, Massimiliano, primary, Dirè, Sandra, additional, Cobani, Elkid, additional, Orsini, Sara, additional, Di Credico, Barbara, additional, Antonini, Carlo, additional, Callone, Emanuela, additional, Parrino, Francesco, additional, Dalle Vacche, Sara, additional, Trusiano, Giuseppe, additional, Bongiovanni, Roberta, additional, and Scotti, Roberto, additional

Published
2020
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10. A green approach for preparing high-loaded sepiolite/polymer biocomposites

Author

Di Credico, B, Tagliaro, I, Cobani, E, Conzatti, L, D'Arienzo, M, Giannini, L, Mascotto, S, Scotti, R, Stagnaro, P, Tadiello, L, Di Credico, Barbara, Tagliaro, Irene, COBANI, ELKID, Conzatti, Lucia, D'Arienzo, Massimiliano, Giannini, Luca, Mascotto, Simone, Scotti, Roberto, Stagnaro, Paola, Tadiello, Luciano, Di Credico, B, Tagliaro, I, Cobani, E, Conzatti, L, D'Arienzo, M, Giannini, L, Mascotto, S, Scotti, R, Stagnaro, P, Tadiello, L, Di Credico, Barbara, Tagliaro, Irene, COBANI, ELKID, Conzatti, Lucia, D'Arienzo, Massimiliano, Giannini, Luca, Mascotto, Simone, Scotti, Roberto, Stagnaro, Paola, and Tadiello, Luciano

Abstract

Global industry is showing a great interest in the field of sustainability owing to the increased attention for ecological safety and utilization of renewable materials. For the scientific community, the challenge lies in the identification of greener synthetic approaches for reducing the environmental impact. In this context, we propose the preparation of novel biocomposites consisting of natural rubber latex (NRL) and sepiolite (Sep) fibers through the latex compounding technique (LCT), an ecofriendly approach where the filler is directly mixed with a stable elastomer colloid. This strategy favors a homogeneous dispersion of hydrophilic Sep fibers in the rubber matrix, allowing the production of high-loaded sepiolite/natural rubber (Sep/NR) without the use of surfactants. The main physicochemical parameters which control Sep aggregation processes in the aqueous medium were comprehensively investigated and a flocculation mechanism was proposed. The uniform Sep distribution in the rubber matrix, characteristic of the proposed LCT, and the percolative filler network improved the mechanical performances of Sep/NR biocomposites in comparison to those of analogous materials prepared by conventional melt-mixing. These outcomes indicate the suitability of the adopted sustainable procedure for the production of high-loaded clay–rubber nanocomposites with remarkable mechanical features.

Published
2019

12. Step-by-step growth of HKUST-1 on functionalized TiO2surface: An efficient material for CO2capture and solar photoreduction

Author

Di Credico, B, Redaelli, M, Bellardita, M, Calamante, M, Cepek, C, Cobani, E, D’Arienzo, M, Evangelisti, C, Marelli, M, Moret, M, Palmisano, L, Scotti, R, Di Credico, Barbara, Redaelli, Matteo, Bellardita, Marianna, Calamante, Massimo, Cepek, Cinzia, Cobani, Elkid, D’arienzo, Massimiliano, Evangelisti, Claudio, Marelli, Marcello, Moret, Massimo, Palmisano, Leonardo, Scotti, Roberto, Di Credico, B, Redaelli, M, Bellardita, M, Calamante, M, Cepek, C, Cobani, E, D’Arienzo, M, Evangelisti, C, Marelli, M, Moret, M, Palmisano, L, Scotti, R, Di Credico, Barbara, Redaelli, Matteo, Bellardita, Marianna, Calamante, Massimo, Cepek, Cinzia, Cobani, Elkid, D’arienzo, Massimiliano, Evangelisti, Claudio, Marelli, Marcello, Moret, Massimo, Palmisano, Leonardo, and Scotti, Roberto

Abstract

The present study reports on a simple preparation strategy of a hybrid catalyst, TiO2/HKUST-1, containing TiO2anatase nanoparticles (NPs) with tailored morphology and photocatalytic activity coupled with a porous metal-organic framework (MOF), namely HKUST-1, as an advanced material for the CO2photocatalytic reduction. In detail, TiO2/HKUST-1 catalyst was prepared via an easy slow-diffusion method combined with a step-by-step self-assembly at room temperature. The growth of crystalline HKUST-1 onto titania surface was achieved by functionalizing TiO2nanocrystals, with phosphoesanoic acid (PHA), namely TiO2-PHA, which provides an intimate contact between MOF and TiO2. The presence of a crystalline and porous shell of HKUST-1 on the TiO2surfaces was assessed by a combination of analytical and spectroscopic techniques. TiO2/HKUST-1 nanocomposite showed a significant efficiency in reducing CO2to CH4under solar light irradiation, much higher than those of the single components. The role of MOF to improve the photoreduction process under visible light was evidenced and attributed either to the relevant amount of CO2captured into the HKUST-1 porous architecture or to the hybrid structure of the material, which affords enhanced visible light absorption and allows an effective electron injection from TiO2-PHA to HKUST-1, responsible for the photochemical reduction of CO2.

Published
2018

13. Step-by-Step Growth of HKUST-1 on Functionalized TiO2 Surface: An Efficient Material for CO2 Capture and Solar Photoreduction

Author

Di Credico, Barbara, primary, Redaelli, Matteo, additional, Bellardita, Marianna, additional, Calamante, Massimo, additional, Cepek, Cinzia, additional, Cobani, Elkid, additional, D’Arienzo, Massimiliano, additional, Evangelisti, Claudio, additional, Marelli, Marcello, additional, Moret, Massimo, additional, Palmisano, Leonardo, additional, and Scotti, Roberto, additional

Published
2018
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14. Ladder-like Poly(methacryloxypropyl) silsesquioxane-Al 2 O 3 -polybutadiene Flexible Nanocomposites with High Thermal Conductivity.

Author

Mingarelli P, Romeo C, Callone E, Fredi G, Dorigato A, D'Arienzo M, Parrino F, and Dirè S

Abstract

Ladder-like poly(methacryloxypropyl)-silsesquioxanes (LPMASQ) are photocurable Si-based gels characterized by a double-stranded structure that ensures superior thermal stability and mechanical properties than common organic polymers. In this work, these attractive features were exploited to produce, in combination with alumina nanoparticles (NPs), both unmodified and functionalized with methacryloxypropyl-trimethoxysilane (MPTMS), LPMASQ/Al 2 O 3 composites displaying remarkable thermal conductivity. Additionally, we combined LPMASQ with polybutadiene (PB) to produce hybrid nanocomposites with the addition of functionalized Al 2 O 3 NPs. The materials underwent thermal stability, structural, and morphological evaluations via thermogravimetric analysis (TGA), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDXS), Fourier transform infrared spectroscopy (FTIR), and solid-state nuclear magnetic resonance (NMR). Both blending PB with LPMASQ and surface functionalization of nanoparticles proved to be effective strategies for incorporating a higher ceramic filler amount in the matrices, resulting in significant increases in thermal conductivity. Specifically, a 113.6% increase in comparison to the bare matrix was achieved at relatively low filler content (11.2 vol%) in the presence of 40 wt% LPMASQ. Results highlight the potential of ladder-like silsesquioxanes in the field of thermally conductive polymers and their applications in heat dissipation for flexible electronic devices.

Published
2023
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