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11. Synthesis of microsponges by spray drying TEMPO-oxidized cellulose nanofibers and characterization for controlled release

Author

Fiorati, Andrea, primary, Baldassarre, Francesca, additional, Riva, Laura, additional, Tacconi, Stefano, additional, Nobile, Concetta, additional, Vergaro, Viviana, additional, Grisorio, Roberto, additional, Melone, Lucio, additional, Mele, Andrea, additional, Dini, Luciana, additional, Punta, Carlo, additional, and Ciccarella, Giuseppe, additional

Published
2023
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14. List of contributors

Author

Alvarez, Mónica B., primary, Baire, Beeraiah, additional, Bandyopadhyay, Debasish, additional, Banik, Bimal Krishna, additional, Basu, Basudeb, additional, Biju, Akkattu T., additional, Brahmachari, Goutam, additional, Chaudhary, Ankita, additional, Choudhury, Prasun, additional, Dolzhenko, Anton V., additional, Domini, Claudia E., additional, Fiorati, Andrea, additional, Gambarotti, Cristian, additional, Gandhi, Soniya, additional, Gardas, Ramesh, additional, Karmakar, Rajiv, additional, Keglevich, György, additional, Khanna, Garima, additional, Khurana, J.M., additional, Kumar, Abhijeet, additional, Kumar, Rakesh, additional, Lim, Felicia Phei Lin, additional, Maity, Pintu, additional, Margetić, Davor, additional, Melone, Lucio, additional, Mukherjee, Nirmalya, additional, Mukhopadhyay, Chhanda, additional, Pastori, Nadia, additional, Punta, Carlo, additional, Raffaini, Giuseppina, additional, Rajkhowa, Sanchayita, additional, Ranu, Brindaban C., additional, Roy, Tony, additional, Schiel, María A., additional, Silbestri, Gustavo F., additional, Sinha, Arun Kumar, additional, Tiwari, Vinod K., additional, Tripathi, Garima, additional, and Truscello, Ada, additional

Published
2021
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17. Contributors

Author

Aguilera, David R., primary, Anand, Aljo, additional, Avila, Alba, additional, Bahadori, E., additional, Bandehali, Samaneh, additional, Bedia, Jorge, additional, Belver, Carolina, additional, Boccardo, Gianluca, additional, Bonelli, Barbara, additional, Bosch, Julian, additional, Caldera, Fabrizio, additional, Corsi, Ilaria, additional, Crevacore, Eleonora, additional, Dutta, Joydeep, additional, Falciola, Luigi, additional, Fiorati, Andrea, additional, Freyria, Francesca S., additional, Fujisaki, Asako, additional, Gadhi, Tanveer A., additional, Giraldo, Felipe Muñoz, additional, Gómez-Avilés, Almudena, additional, Grassi, Giacomo, additional, Hamd, Wael S., additional, Hosseini, Sayed Mohsen, additional, Mahar, Rasool Bux, additional, Marchisio, Daniele L., additional, Messina, Francesca, additional, Moghadassi, Abdolreza, additional, Muelas-Ramos, Virginia, additional, Muqeet, Muhammad, additional, Noll, Hendrik M., additional, Parvizian, Fahime, additional, Pedrazzo, Alberto Rubin, additional, Peñas-Garzón, Manuel, additional, Pifferi, Valentina, additional, Plazas-Tuttle, Jaime, additional, Prelot, Benedicte, additional, Punta, Carlo, additional, Rajchakit, Urawadee, additional, Ramis, G., additional, Raoof, Amir, additional, Rodriguez, Juan J., additional, Rossetti, I., additional, Sacco, Olga, additional, Sahoo, Tapas Ranjan, additional, Sannino, Diana, additional, Sannino, Filomena, additional, Sarojini, Vijayalekshmi, additional, Sethi, Rajandrea, additional, Testolin, Anna, additional, Tosco, Tiziana, additional, Trotta, Francesco, additional, and Vaiano, Vincenzo, additional

Published
2020
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20. Silver Nanoparticles Supported onto TEMPO-Oxidized Cellulose Nanofibers for Promoting Cd2+ Cation Adsorption.

Author

Riva, Laura, Dotti, Anna, Iucci, Giovanna, Venditti, Iole, Meneghini, Carlo, Corsi, Ilaria, Khalakhan, Ivan, Nicastro, Gloria, Punta, Carlo, and Battocchio, Chiara

Abstract

Nanocellulose constitutes a sustainable and biobased solution both as an efficient sorbent material for water treatment and as support for other inorganic nanomaterials with sorbent properties. Herein, we report the synthesis of a nanocomposite by deposition of in situ-generated silver nanoparticles (AgNPs) onto TEMPO-oxidized cellulose nanofibers (TOCNFs). Following an in-depth analytical investigation, we unveil for the first time the key role of AgNPs in enhancing the adsorption efficiency of TOCNF toward Cd2+ ions, chosen as model heavy metal contaminants. The obtained nanocomposite shows a value of Cd2+ sorption capacity at equilibrium from 150 mg L–1 ion aqueous solutions of ∼116 mg g–1 against the value of 78 mg g–1 measured for TOCNF alone. A combination of field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray (EDX), and X-ray photoelectron spectroscopy (XPS) analyses suggests that Cd2+ ions are mainly adsorbed in the neighborhood of AgNPs. However, XPS characterization allows us to conclude that the role of AgNPs relies on increasing the exposure of carboxylic groups with respect to the original TOCNF, suggesting that these groups are still responsible for absorption. In fact, X-ray absorption spectroscopy (XAS) analysis of the Cd–K edge excludes a direct interaction between Ag0 and Cd2+, supporting the XPS results and confirming the coordination of the latter with carboxyl groups. [ABSTRACT FROM AUTHOR]

Published
2024
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24. Challenges and opportunities for N-hydroxyphthalimide supported over heterogeneous solids for aerobic oxidations

Author

Ministerio de Ciencia e Innovación (España), Caruso, Manfredi, Navalón, Sergio, Cametti, Massimo, Dhakshinamoorthy, Amarajothi, Punta, Carlo, García Gómez, Hermenegildo, Ministerio de Ciencia e Innovación (España), Caruso, Manfredi, Navalón, Sergio, Cametti, Massimo, Dhakshinamoorthy, Amarajothi, Punta, Carlo, and García Gómez, Hermenegildo

Abstract

Organocatalysis, in combination with, or as an alternative to the use of metals, is attracting increasing interest as a sustainable route to promote selective transformations. In this context, N-hydroxyphthalimide (NHPI) has found ample application as an effective organocatalyst capable to promote the aerobic oxidation of a wide range of organic substrates, including saturated and unsaturated hydrocarbons, alcohols, amines and sulphides among others. However, most of these transformations required the use of NHPI dissolved in solution, with consequent limits in the scale-up of the process. Leaving aside the reviews of NHPI as organocatalyst in homogeneous phase, the present review describes the strategies reported to support or anchor NHPI on a wide range of insoluble solids, thus converting this homogeneous organocatalyst into a heterogeneous system, with the consequent advantages related to the ease of separation and recovery of the catalyst from the reaction medium, its recyclability and the possibility to develop continuous flow reactions. After a brief introductory section, a detailed description of the catalytic mechanism is here presented, also providing a comparison between NHPI and 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) radical, and by highlighting the main challenges associated to NHPI heterogenization. The critical description of the heterogeneous solutions is organized according to the nature of the support, focusing on metal–organic frameworks (MOFs), organic polymers, carbon-based materials, and inorganic supports, while the growing use of NHPI-containing photocatalysts is presented separately. In the final section, we outline the main achievements on the use of NHPI heterogeneous catalysis and provide our views for future developments in the area.

Published
2023

25. Environmental safety of nanocellulose: an acute in vivostudy with marine mussels Mytilus galloprovincialisElectronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d3en00135k

Author

Rusconi, Tatiana, Riva, Laura, Punta, Carlo, Solé, Montserrat, and Corsi, Ilaria

Abstract

The growing application of nanocellulose in various industrial sectors with potential release into the natural environment demands a safety assessment and thus ecotoxicity. Herein, we tested two types of cellulose nanofibers, non-oxidized (CNF) and TEMPO-oxidized (TOCNF), by performing acute in vivostudies with the marine bivalve Mytilus galloprovincialisat 1 μg L−1and 1 mg L−1as resembling realistic and acute exposure scenarios, respectively. Uptake and sub-lethal biological responses (lysosomal membrane stability, neurotoxicity, oxidative stress and biotransformation) were investigated along with changes in fibers with water salinity. TOCNF resulted in more dispersion than CNF in natural sea water (NSW) probably owing to higher repulsion among fibers driven by their negative surface charges and colloidal organic material. Both CNF and TOCNF were found in mussel tissues (gills and hemolymph) using labelled stocks. The destabilization of lysosomal membranes of hemocytes was observed; similarly, the inhibition of P-gp efflux activities in the gills was stronger for CNF at the highest concentration (1 mg L−1). Cholinergic enzymes (ASCh–ChE activities) were inhibited in hemocytes, gills and digestive glands regardless of CNF oxidation and concentration tested. In contrast, neither oxidative stress nor biotransformation was affected in the digestive glands and gills of the mussels. Overall, the findings showed CNF uptake by marine mussels and the disruption of gill functionality and immune cells by mechanical interaction even in environmentally realistic exposure scenarios. The paucity of data on the hazards posed by CNF for aquatic species demands that safety aspects be considered in future risk assessment scenarios.

Published
2024
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26. Eco-Friendly Engineered Nanomaterials Coupled with Filtering Fine-Mesh Net as a Promising Tool to Remediate Contaminated Freshwater Sludges: An Ecotoxicity Investigation

Author

Guidi, Patrizia, primary, Bernardeschi, Margherita, additional, Palumbo, Mara, additional, Buttino, Isabella, additional, Vitiello, Valentina, additional, Scarcelli, Vittoria, additional, Chiaretti, Gianluca, additional, Fiorati, Andrea, additional, Pellegrini, David, additional, Pontorno, Lorenzo, additional, Bonciani, Lisa, additional, Punta, Carlo, additional, Corsi, Ilaria, additional, and Frenzilli, Giada, additional

Published
2023
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32. Environmental safety of cellulose nanofibers for environmental applications an in vivo study with marine mussel Mytilus galloprovincialis

Author

Rusconi, Tatiana, Riva, Laura, Punta, Carlo, Solé, Montserrat, Corsi, Ilaria, Rusconi, Tatiana, Riva, Laura, Punta, Carlo, Solé, Montserrat, and Corsi, Ilaria

Abstract

Anthropogenic pollution in the marine environment has grown exponentially around the world and the continuous increase in pollutants released has led to a progressive degradation with consequences on marine biodiversity and ecosystem health . Among methodologies currently in use for water decontamination and remediation , nanocellulose has emerged as a promising solution being of natural origin and an efficient adsorbent material for pollutants removal . Despite such good expectations , up to now environmental and biological impact of nanocellulose has been overlooked . Cellulose based fibers have been recently found in Mediterranean marine species and concerns have been expressed regarding their safety , here added to the nanoscale dimension itself (<100nm). The present study aims to investigate the environmental safety of two types of cellulose nanofibers (CNF), non oxidized (CNF) and oxidized (TOCNF) at concentrations resembling acute and environmentally realistic exposure scenarios (1mg/L 1µg/L) by using an in vivo short term study with the model bivalve mollusk Mytilus galloprovincialis

Published
2022

39. Can TEMPO-Oxidized Cellulose Nanofibers Be Used as Additives in Bio-Based Building Materials? A Preliminary Study on Earth Plasters.

Author

Gallo Stampino, Paola, Riva, Laura, Caruso, Marco, Rahman, Imran Abdul, Elegir, Graziano, Bussini, Daniele, Marti-Rujas, Javier, Dotelli, Giovanni, and Punta, Carlo

Subjects
NANOFIBERS, CELLULOSE, PLASTER, PAPER recycling, CIRCULAR economy, CELLULOSE fibers, RECYCLED paper
Abstract

Interest towards cellulose nanofibers obtained from virgin and waste sources has seen a significant growth, mainly thanks to the increasing sensitivity towards the concept of circular economy and the high levels of paper recycling achieved in recent years. Inspired by the guidelines of the green building industry, this study proposes the production and characterization of TEMPO-oxidized and homogenized cellulose nanofibers (TOHO CNF) from different sources and their use as additives for earth plasters on two different raw earth samples, characterized by geotechnical laboratory tests and mineralogical analysis: a high-plasticity clay (T2) and a medium-compressibility silt (ABS). Original sources, including those derived from waste (recycled cardboard and paper mill sludge), were characterized by determining chemical content (cellulose versus ashes and lignin) and fiber morphology. TOHO CNF derived from the different sources were compared in terms of nanofibers medium diameter, crystallinity degree, thermal decomposition and oxidation degree, that is the content of carboxylic groups per gram of sample. Then, a preliminary analysis of the influence of CNF on earth plasters is examined. Adhesion and capillary absorption tests highlighted the effect of such nanofibers on blends in function of two factors, namely the cellulose original source and the oxidation degree of the fibers. In particular, for both earth samples, T2 and ABS, a significant increase in adhesion strength was observed in the presence of some TOHO CNF additives. As far as capillary sorption tests, while an undesired increase in water adsorption was detected for T2 compared to the control, in the case of ABS, a significant reduction in water content was measured by adding TOHO CNF derived from recycled sources. These results pave the way for further in-depth investigation on the role of TOHO CNF as additives for earth plasters. [ABSTRACT FROM AUTHOR]

Published
2023
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40. Contributors

Author

Alvarez, Mónica B., primary, Arun, V., additional, Bandyopadhyay, Debasish, additional, Banik, Bimal K., additional, Basu, Basudeb, additional, Biju, Akkattu T., additional, Braga, Taniris Cafiero, additional, Brahmachari, Goutam, additional, Cadierno, Victorio, additional, Calvino-Casilda, Vanesa, additional, Chatterjee, Tanmay, additional, Chattopadhyay, Shital K., additional, Chopa, Alicia B., additional, da Silva Neto, Leonardo, additional, Dolzhenko, Anna V., additional, Dolzhenko, Anton V., additional, Domini, Claudia E., additional, de Fátima, Ângelo, additional, Gambarotti, Cristian, additional, Godino, Marina, additional, Kaicharla, Trinadh, additional, Keglevich, György, additional, Kleij, Arjan W., additional, Kumar, Dalip, additional, Kumar, N. Maruthi, additional, Kumar, Dhananjay, additional, Lista, Adriana G., additional, López- Peinado, Antonio J., additional, Maity, Pintu, additional, Majhi, Biju, additional, Mandal, Bablee, additional, Margetić, Davor, additional, Martín-Aranda, Rosa M., additional, Melone, Lucio, additional, Mishra, Bhuwan B., additional, Mukherjee, Nirmalya, additional, Paike, Vijaykumar V., additional, Pérez-Mayoral, Elena, additional, Pilania, Meenakshi, additional, Punta, Carlo, additional, Raffaini, Giuseppina, additional, Ranu, Brindaban C., additional, Schiel, María A., additional, Silbestri, Gustavo F., additional, Singh, Girija S., additional, Singh, Anoop S., additional, Sun, Chung-Ming, additional, Tabane, Tumelo H., additional, Terra, Bruna Silva, additional, Tiwari, Vinod K., additional, Tripathi, Rama P., additional, and Yanai, Hikaru, additional

Published
2015
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43. Cellular Responses Induced by Zinc in Zebra Mussel Haemocytes. Loss of DNA Integrity as a Cellular Mechanism to Evaluate the Suitability of Nanocellulose-Based Materials in Nanoremediation

Author

Guidi, Patrizia, primary, Bernardeschi, Margherita, additional, Palumbo, Mara, additional, Scarcelli, Vittoria, additional, Genovese, Massimo, additional, Protano, Giuseppe, additional, Vitiello, Valentina, additional, Pontorno, Lorenzo, additional, Bonciani, Lisa, additional, Buttino, Isabella, additional, Chiaretti, Gianluca, additional, Pellegrini, David, additional, Fiorati, Andrea, additional, Riva, Laura, additional, Punta, Carlo, additional, Corsi, Ilaria, additional, and Frenzilli, Giada, additional

Published
2021
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