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Alfe M, Minopoli G, Tartaglia M, Gargiulo V, Ausanio G. Biocompatible Hybrid Graphenic Thin Coatings on Flexible Substrates through Matrix-Assisted Pulsed Laser Evaporation (MAPLE). ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 39018469 DOI: 10.1021/acsami.4c06000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/19/2024]
Abstract
This work reports the production of biocompatible thin layers for biomedical applications based on a graphene-like material (GL), a graphene-related material (GRM) obtained from carbon black. GL was combined in a hybrid fashion with polydopamine (pDA), a mussel-inspired water-resistant wet adhesive bonding obtained by the oxidative polymerization of dopamine (DA), and polyvinyl pyrrolidinone (PVP), a nontoxic synthetic polymer with intrinsic adhesion properties, to obtain a tighter adhesion of the thin layer to the substrate (silicone slices). Matrix-assisted pulsed laser evaporation (MAPLE) was used to coat PDMS slices with thin films of GL-pDA and GL-PVP directly from their frozen suspensions in water. The results indicate that the relevant chemical-physical characteristics of both thin films (evidenced by FTIR and AFM) were maintained after MAPLE deposition and that the films exhibit uniformity also at the nanometric level. After deposition, the GL-pDA and GL-PVP films underwent a biological survey toward murine fibroblasts (NIH3T3), human keratinocytes (HaCAT), and human cervical adenocarcinoma epithelial-like (HeLa) cells to assess the feasibility of this approach. Results indicate that both the GL-pDA and GL-PVP films did not perturb the biological parameters evaluated, including cytoskeleton alterations. Both hybrid films enhanced the effects of GL on cellular vitality across all cell lines. Specifically, the GL-pDA film exhibited a more stable effect over time (up to 72 h), whereas the GL-PVP film behaved similarly to the GL film in NIH3T3 and HeLa cell lines after long-term exposure. These promising results make the GL-pDA and GL-PVP films potential candidates for the manufacture of coated flexible devices for biomedical applications.
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Affiliation(s)
- Michela Alfe
- Institute of Sciences and Technologies for Sustainable Energy and Mobility (CNR-STEMS), Via G. Marconi, 4, Naples 80125, Italy
| | - Giuseppina Minopoli
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Via Pansini, 5, Naples 80131, Italy
| | - Massimiliano Tartaglia
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Via Pansini, 5, Naples 80131, Italy
| | - Valentina Gargiulo
- Institute of Sciences and Technologies for Sustainable Energy and Mobility (CNR-STEMS), Via G. Marconi, 4, Naples 80125, Italy
| | - Giovanni Ausanio
- Department of Physics "E. Pancini", University of Naples Federico II and Institute for Superconductors Innovative Materials and Devices (CNR-SPIN), via Cinthia 26, Naples 80126, Italy
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Russo T, Peluso V, Gloria A, Gargiulo V, Alfe M, Ausanio G. An integrated design strategy coupling additive manufacturing and matrix-assisted pulsed laser evaporation (MAPLE) towards the development of a new concept 3D scaffold with improved properties for tissue regeneration. NANOSCALE ADVANCES 2024; 6:3064-3072. [PMID: 38868830 PMCID: PMC11166109 DOI: 10.1039/d4na00098f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 04/12/2024] [Indexed: 06/14/2024]
Abstract
Bioinspired strategies for scaffold design and optimization were improved by the introduction of Additive Manufacturing (AM), thus allowing for replicating and reproducing complex shapes and structures in a reliable manner, adopting different kinds of polymeric and nanocomposite materials properly combined according to the features of the natural host tissues. Benefiting from recent findings in AM, a Matrix-Assisted Pulsed Laser Evaporation (MAPLE) technique was employed for obtaining graphene-like material (GL) uniform coatings on 3D scaffolds for tissue repair strategies, towards the development of a new concept 3D scaffold with controlled morphological/architectural and surface features and mechanical and biological properties. The effect of the material-design combination through an integrated technological approach (i.e., MAPLE deposition of GL on 3D AM PCL scaffolds) was assessed through scanning electron microscopy, atomic force microscopy, contact angle measurements, mechanical measurements and biological analyses (cell viability assay and alkaline phosphatase activity) in conjunction with confocal laser scanning microscopy. The differentiation of hMSCs towards the osteoblast phenotype was also investigated analysing the gene expression profile. The obtained findings provided a further insight into the development of improved strategies for the functionalization or combination of GL with other materials and 3D structures in a hybrid fashion for ensuring a tighter adhesion onto the substrates, improving cell fate over time, without negatively altering the mechanical properties and behaviour of the neat constructs. In particular, the results provided interesting information, making 3D AM GL-coated scaffolds potential candidates for bone tissue engineering.
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Affiliation(s)
- Teresa Russo
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy 80125 Naples Italy
| | - Valentina Peluso
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy 80125 Naples Italy
| | - Antonio Gloria
- Department of Industrial Engineering, University of Naples Federico II 80125 Naples Italy
| | - Valentina Gargiulo
- Institute of Sciences and Technologies for Sustainable Energy and Mobility (STEMS), National Research Council of Italy 80125 Naples Italy
| | - Michela Alfe
- Institute of Sciences and Technologies for Sustainable Energy and Mobility (STEMS), National Research Council of Italy 80125 Naples Italy
| | - Giovanni Ausanio
- Dipartimento di Fisica "Ettore Pancini", Università degli Studi di Napoli Federico II 80125 Napoli Italy
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Seitzhanova M, Azat S, Yeleuov M, Taurbekov A, Mansurov Z, Doszhanov E, Berndtsson R. Production of Graphene Membranes from Rice Husk Biomass Waste for Improved Desalination. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:224. [PMID: 38276742 PMCID: PMC10820881 DOI: 10.3390/nano14020224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/02/2024] [Accepted: 01/16/2024] [Indexed: 01/27/2024]
Abstract
Inexpensive and efficient desalination is becoming increasingly important due to dwindling freshwater resources in view of climate change and population increase. Improving desalination techniques of brackish water using graphene-based materials has the possibility to revolutionize freshwater production and treatment. At the same time, graphene matter can be cheaply mass-produced from biowaste materials. In view of this, graphene material was obtained from a four-step production approach starting from rice husk (RH), including pre-carbonation, desilication, chemical activation, and exfoliation. The results showed that the produced samples contained a mixture of graphene layers and amorphous carbon. The activation ratio of 1:5 for carbonized RH and potassium hydroxide (KOH), respectively, provided higher graphene content than the 1:4 ratio of the same components, while the number of active layers remained unaffected. Further treatment with H2O2 did not affect the graphene content and exfoliation of the amorphous carbon. Preparation of the graphene material by the NIPS technique and vacuum filtration displayed different physicochemical characteristics of the obtained membranes. However, the membranes' main desalination function might be related more to adsorption rather than size exclusion. In any case, the desalination properties of the different graphene material types were tested on 35 g/L saltwater samples containing NaCl, KCl, MgCl2, CaSO4, and MgSO4. The produced graphene materials efficiently reduced the salt content by up to 95%. Especially for the major constituent NaCl, the removal efficiency was high.
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Affiliation(s)
- Makpal Seitzhanova
- Faculty of Chemistry and Chemical Technology, Department of Chemical Physics and Materials Science, Al-Farabi Kazakh National University, Al-Farabi Ave. 71, Almaty 050059, Kazakhstan; (M.S.); (Z.M.)
| | - Seitkhan Azat
- Laboratory of Engineering Profile, Satbayev University, Satbayev Str. 22a, Almaty 050013, Kazakhstan
| | - Mukhtar Yeleuov
- Institute of Combustion Problems, Bogenbay Batyr Str. 1721, Almaty 050012, Kazakhstan; (M.Y.); (A.T.); (E.D.)
| | - Azamat Taurbekov
- Institute of Combustion Problems, Bogenbay Batyr Str. 1721, Almaty 050012, Kazakhstan; (M.Y.); (A.T.); (E.D.)
| | - Zulkhair Mansurov
- Faculty of Chemistry and Chemical Technology, Department of Chemical Physics and Materials Science, Al-Farabi Kazakh National University, Al-Farabi Ave. 71, Almaty 050059, Kazakhstan; (M.S.); (Z.M.)
- Institute of Combustion Problems, Bogenbay Batyr Str. 1721, Almaty 050012, Kazakhstan; (M.Y.); (A.T.); (E.D.)
| | - Erlan Doszhanov
- Institute of Combustion Problems, Bogenbay Batyr Str. 1721, Almaty 050012, Kazakhstan; (M.Y.); (A.T.); (E.D.)
| | - Ronny Berndtsson
- Division of Water Resources Engineering, Centre for Advanced Middle Eastern Studies, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
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Magaletti F, Margani F, Monti A, Dezyani R, Prioglio G, Giese U, Barbera V, Galimberti MS. Adducts of Carbon Black with a Biosourced Janus Molecule for Elastomeric Composites with Lower Dissipation of Energy. Polymers (Basel) 2023; 15:3120. [PMID: 37514509 PMCID: PMC10383720 DOI: 10.3390/polym15143120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 07/12/2023] [Accepted: 07/20/2023] [Indexed: 07/30/2023] Open
Abstract
Elastomer composites with low hysteresis are of great importance for sustainable development, as they find application in billions of tires. For these composites, a filler such as silica, able to establish a chemical bond with the elastomer chains, is used, in spite of its technical drawbacks. In this work, a furnace carbon black (CB) functionalized with polar groups was used in replacement of silica, obtaining lower hysteresis. CBN326 was functionalized with 2-(2,5-dimethyl-1H-pyrrol-1-yl)-1,3-propanediol (serinol pyrrole, SP), and samples of CB/SP adducts were prepared with different SP content, ranging from four to seven parts per hundred carbon (phc). The entire process, from the synthesis of SP to the preparation of the CB/SP adduct, was characterized by a yield close to 80%. The functionalization did not alter the bulk structure of CB. Composites were prepared, based on diene rubbers-poly(1,4-cis-isoprene) from Hevea Brasiliensis and poly(1,4-cis-butadiene) in a first study and synthetic poly(1,4-cis-isoprene) in a second study-and were crosslinked with a sulfur-based system. A CB/silica hybrid filler system (30/35 parts) was used and the partial replacement (66% by volume) of silica with CB/SP was performed. The composites with CB/SP exhibited more efficient crosslinking, a lower Payne effect and higher dynamic rigidity, for all the SP content, with the effect of the functionalized CB consistently increasing the amount of SP. Lower hysteresis was obtained for the composites with CB/SP. A CB/SP adduct with approximately 6 phc of SP, used in place of silica, resulted in a reduction in ΔG'/G' of more than 10% and an increase in E' at 70 °C and in σ300 in tensile measurements of about 35% and 30%, respectively. The results of this work increase the degrees of freedom for preparing elastomer composites with low hysteresis, allowing for the use of either silica or CB as filler, with a potentially great impact on an industrial scale.
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Affiliation(s)
- Federica Magaletti
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
| | - Fatima Margani
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
| | - Alessandro Monti
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
| | - Roshanak Dezyani
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
| | - Gea Prioglio
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
| | - Ulrich Giese
- Deutsches Institut für Kautschuktechnologie e. V., Eupener Straße 33, 30519 Hannover, Germany
| | - Vincenzina Barbera
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
| | - Maurizio Stefano Galimberti
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milano, Italy
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Gargiulo V, Policicchio A, Lisi L, Alfe M. CO 2 Capture and Gas Storage Capacities Enhancement of HKUST-1 by Hybridization with Functionalized Graphene-like Materials. ENERGY & FUELS : AN AMERICAN CHEMICAL SOCIETY JOURNAL 2023; 37:5291-5302. [PMID: 37058617 PMCID: PMC10084447 DOI: 10.1021/acs.energyfuels.2c04289] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 03/05/2023] [Indexed: 06/19/2023]
Abstract
The role of graphene related material (GRM) functionalization on the structural and adsorption properties of MOF-based hybrids was deepened by exploring the use of three GRMs obtained from the chemical demolition of a nanostructured carbon black. Oxidized graphene-like (GL-ox), hydrazine reduced graphene-like (GL), and amine-grafted graphene-like (GL-NH2) materials have been used for the preparation of Cu-HKUST-1 based hybrids. After a full structural characterization, the hybrid materials underwent many adsorption-desorption cycles to evaluate their capacities to capture CO2 and store CH4 at high pressure. All the MOF-based samples showed very high specific surface area (SSA) values and total pore volumes, but different pore size distributions attributed to the instauration of interactions between the MOF precursors and the specific functional groups on the GRM surface during MOF growth. All the samples showed a good affinity toward both gases (CO2 and CH4) and a comparable structural stability and integrity (possible aging was excluded). The trend of the maximum storage capacity values of the four MOF samples toward CO2 and CH4 was HKUST-1/GL-NH2 > HKUST-1 > HKUST-1/GL-ox > HKUST-1/GL. Overall, the measured CO2 and CH4 uptakes were in line with or higher than those already reported in the open literature for Cu-HKUST-1 based hybrids evaluated in similar conditions.
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Affiliation(s)
- Valentina Gargiulo
- CNR-STEMS
Institute of Sciences and Technologies for Sustainable Energy and
Mobility, P. le V. Tecchio
80, Napoli 80125, Italy
| | - Alfonso Policicchio
- Dipartimento
di Fisica, Università della Calabria, Via P. Bucci - Cubo 31C, Arcavacata di Rende 87036, Italy
- CNISM
- Consorzio Nazionale Interuniversitario per le Scienze fisiche della
Materia, Via della Vasca
Navale 84, Roma 00146, Italy
- Consiglio
Nazionale delle Ricerche, Istituto di Nanotecnologia
(Nanotec) − UoS Cosenza, Via Ponte P. Bucci, Cubo 31C, Arcavacata di
Rende 87036, Italy
| | - Luciana Lisi
- CNR-STEMS
Institute of Sciences and Technologies for Sustainable Energy and
Mobility, P. le V. Tecchio
80, Napoli 80125, Italy
| | - Michela Alfe
- CNR-STEMS
Institute of Sciences and Technologies for Sustainable Energy and
Mobility, P. le V. Tecchio
80, Napoli 80125, Italy
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6
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Alfe M, Minopoli G, Tartaglia M, Gargiulo V, Caruso U, Pepe GP, Ausanio G. Coating of Flexible PDMS Substrates through Matrix-Assisted Pulsed Laser Evaporation (MAPLE) with a New-Concept Biocompatible Graphenic Material. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3663. [PMID: 36296853 PMCID: PMC9610489 DOI: 10.3390/nano12203663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/10/2022] [Accepted: 10/15/2022] [Indexed: 06/16/2023]
Abstract
In this study, matrix-assisted pulsed laser evaporation (MAPLE) was used to deposit graphene-like materials (GL), a new class of biocompatible graphene-related materials (GRMs) obtained from a controlled top-down demolition of a carbon black, on silicone slices to test their potential use as functional coating on invasive medical devices as indwelling urinary catheters. Results indicate that the relevant chemical-physical features of the deposit (controlled by FTIR and AFM) were maintained after MAPLE deposition. After deposition, GL films underwent a biological survey toward target cellular lines (murine fibroblast NIH3T3, human keratinocytes HaCAT and the human cervical adenocarcinoma epithelial-like HeLa). Results indicate that the GL films did not lead to any perturbations in the different biological parameters evaluated. The presented results and the possibility to further functionalize the GL or combine them with other functional materials in a hybrid fashion to assure a tighter adhesion onto the substrate for use in harsh conditions open the door to practical applications of these new-concept medical devices (drug delivery, next generation flexible devices, multifunctional coatings) paving the way to the prevention of nosocomial infections driven by catheterization through antibiotics-free approaches.
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Affiliation(s)
- Michela Alfe
- Institute of Sciences and Technologies for Sustainable Energy and Mobility (CNR-STEMS), P.le V. Tecchio 80, 80125 Naples, Italy
| | - Giuseppina Minopoli
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, via Pansini, 5, 80131 Naples, Italy
| | - Massimiliano Tartaglia
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, via Pansini, 5, 80131 Naples, Italy
| | - Valentina Gargiulo
- Institute of Sciences and Technologies for Sustainable Energy and Mobility (CNR-STEMS), P.le V. Tecchio 80, 80125 Naples, Italy
| | - Ugo Caruso
- Department of Chemical Sciences, University of Naples Federico II, via Cinthia 4, 80126 Naples, Italy
| | - Giovanni Piero Pepe
- Department of Physics “E. Pancini”, University of Naples Federico II, via Cinthia 4, 80126 Naples, Italy
| | - Giovanni Ausanio
- Department of Physics “E. Pancini”, University of Naples Federico II, via Cinthia 4, 80126 Naples, Italy
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7
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The Transformation of 0-D Carbon Dots into 1-, 2- and 3-D Carbon Allotropes: A Minireview. NANOMATERIALS 2022; 12:nano12152515. [PMID: 35893483 PMCID: PMC9330435 DOI: 10.3390/nano12152515] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 01/20/2023]
Abstract
Carbon dots (CDs) represent a relatively new type of carbon allotrope with a 0-D structure and with nanoparticle sizes < 10 nm. A large number of research articles have been published on the synthesis, characteristics, mechanisms and applications of this carbon allotrope. Many of these articles have also shown that CDs can be synthesized from “bottom-up” and “top-down” methods. The “top-down” methods are dominated by the breaking down of large carbon structures such as fullerene, graphene, carbon black and carbon nanotubes into the CDs. What is less known is that CDs also have the potential to be used as carbon substrates for the synthesis of larger carbon structures such as 1-D carbon nanotubes, 2-D or 3-D graphene-based nanosheets and 3-D porous carbon frameworks. Herein, we present a review of the synthesis strategies used to convert the 0-D carbons into these higher-dimensional carbons. The methods involve the use of catalysts or thermal procedures to generate the larger structures. The surface functional groups on the CDs, typically containing nitrogen and oxygen, appear to be important in the process of creating the larger carbon structures that typically are formed via the generation of covalent bonds. The CD building blocks can also ‘aggregate’ to form so called supra-CDs. The mechanism for the formation of the structures made from CDs, the physical properties of the CDs and their applications (for example in energy devices and as reagents for use in medicinal fields) will also be discussed. We hope that this review will serve to provide valuable insights into this area of CD research and a novel viewpoint on the exploration of CDs.
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Graphene-Like Layers from Carbon Black: In Vivo Toxicity Assessment. NANOMATERIALS 2020; 10:nano10081472. [PMID: 32727143 PMCID: PMC7466612 DOI: 10.3390/nano10081472] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/16/2020] [Accepted: 07/24/2020] [Indexed: 12/12/2022]
Abstract
Graphene-like (GL) layers, a new graphene-related material (GRM), possess peculiar chemical, colloidal, optical and transport properties. Considering the very recent promising application of GL layers in biomedical and bioelectronic fields, it is of utmost importance to investigate the toxicological profile of these nanomaterials. This study represents an important first report of a complete in vivo toxicity assessment of GL layers on embryonic zebrafish (Danio rerio). Our results show that GL layers do not lead to any perturbations in the different biological parameters evaluated, indicating their good biocompatibility on a vertebrate model. The new insight into the biosafety of GL layers will expand their applications in nanomedicine.
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9
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Alfe M, Gargiulo V, Di Capua R. An Old but Lively Nanomaterial: Exploiting Carbon Black for the Synthesis of Advanced Materials. EURASIAN CHEMICO-TECHNOLOGICAL JOURNAL 2019. [DOI: 10.18321/ectj861] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Carbon black (CB) is an old-concept but versatile carbonaceous material prone to be structurally and chemically modified under quite mild wet conditions. Recently, we exploited the potentiality of CB for the production of a highly varied array of advanced materials with applications in energetics, water remediation and sensoristic. The proposed approaches are devised to meet specific needs: low production costs, scalable synthetic approaches, flexibility i.e. easy tuning of chemico-physical properties of the carbon-based advanced materials. Two main approaches have been exploited: modification of CB at the surface and highly CB de-structuration. The former approach allows obtaining highly homogenous CB-modified nanoparticles (around 160 nm) with tunable surface properties (hydrophilicity, typology of functional groups and surface charge density, pore size distribution), supports for ionic liquid (SILP) and composites (carbon-iron oxide). The latter approach exploiting a top-down demolition of CB produces a highly versatile graphene related material (GRM), made up by stacked short graphene-like layers (GL) particularly suitable for advanced composites synthesis and ultrathin carbon-based films production.
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10
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Seitzhanova M, Mansurov Z, Yeleuov M, Roviello V, Di Capua R. The Characteristics of Graphene Obtained from Rice Husk and Graphite. EURASIAN CHEMICO-TECHNOLOGICAL JOURNAL 2019. [DOI: 10.18321/ectj825] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
In this paper methods for obtaining graphene oxide from rice husk were developed, which using a downward approach based on a four-stage strategy: preliminary carbonization, desilication, activation with KOH, and exfoliation and its comparison with the method of graphite oxidation. The samples were analyzed by elemental analysis, SEM, Raman, TGA and FTIR. The elemental analysis show that the proposed approach allows to produce graphene materials with a carbon content around 70% and rich in inorganic matter (0–20 wt.%) (K, Fe, Si). To remove inorganic contents, purification and functionalization step were applied. The Raman spectra of the samples indicate the presence of a mixture of graphene layers and amorphous carbon. The thermogravimetric profile of samples is characterized by a slowly weight decrease up to a final residue of ~10 wt.%. FTIR spectra are characterized by the typical broad shape of large condensed aromatic carbon bonds; only the peak due to C=C stretching modes and the overlapped peaks between 900 and 1500 cm-1 due to skeleton vibrations are detected.
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11
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Di Capua R, Gargiulo V, Alfè M, De Luca GM, Skála T, Mali G, Pezzella A. Eumelanin Graphene-Like Integration: The Impact on Physical Properties and Electrical Conductivity. Front Chem 2019; 7:121. [PMID: 30937300 PMCID: PMC6432792 DOI: 10.3389/fchem.2019.00121] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Accepted: 02/15/2019] [Indexed: 11/13/2022] Open
Abstract
The recent development of eumelanin pigment-based blends integrating "classical" organic conducting materials is expanding the scope of eumelanin in bioelectronics. Beyond the achievement of high conductivity level, another major goal lays in the knowledge and feasible control of structure/properties relationship. We systematically investigated different hybrid materials prepared by in situ polymerization of the eumelanin precursor 5,6-dihydroxyindole (DHI) in presence of various amounts of graphene-like layers. Spectroscopic studies performed by solid state nuclear magnetic resonance (ss-NMR), x-ray photoemission, and absorption spectroscopies gave a strong indication of the direct impact that the integration of graphene-like layers into the nascent polymerized DHI-based eumelanin has on the structural organization of the pigment itself, while infrared, and photoemission spectroscopies indicated the occurrence of negligible changes as concerns the chemical units. A tighter packing of the constituent units could represent a strong factor responsible for the observed improved electrical conductivity of the hybrid materials, and could be possible exploited as a tool for electrical conductivity tuning.
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Affiliation(s)
- Roberto Di Capua
- Department of Physics “E. Pancini”, University of Naples “Federico II” and Superconducting and Other Innovative Materials and Devices Institute (SPIN), CNR, Naples, Italy
| | | | - Michela Alfè
- Institute for Research on Combustion (IRC), CNR, Naples, Italy
| | - Gabriella Maria De Luca
- Department of Physics “E. Pancini”, University of Naples “Federico II” and Superconducting and Other Innovative Materials and Devices Institute (SPIN), CNR, Naples, Italy
| | - Tomáš Skála
- Faculty of Mathematics and Physics, Charles University, Prague, Czechia
| | - Gregor Mali
- Department of Inorganic Chemistry and Technology, National Institute of Chemistry, Ljubljana, Slovenia
| | - Alessandro Pezzella
- Institute for Polymers, Composites and Biomaterials (IPCB), CNR, Pozzuoli, Italy
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12
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Esposito S, Silvestri B, Russo V, Bonelli B, Manzoli M, Deorsola FA, Vergara A, Aronne A, Di Serio M. Self-Activating Catalyst for Glucose Hydrogenation in the Aqueous Phase under Mild Conditions. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04710] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Serena Esposito
- Dipartimento di Scienza Applicata e Tecnologia e Unità INSTM di Torino-Politecnico, Politecnico di Torino, Corso Duca degli Abruzzi, 24, I-10129 Torino, Italy
| | - Brigida Silvestri
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università di Napoli Federico II, P.le Tecchio, 80, I-80125 Napoli, Italy
| | - Vincenzo Russo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 4, I-80126 Napoli, Italy
| | - Barbara Bonelli
- Dipartimento di Scienza Applicata e Tecnologia e Unità INSTM di Torino-Politecnico, Politecnico di Torino, Corso Duca degli Abruzzi, 24, I-10129 Torino, Italy
| | - Maela Manzoli
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via Pietro Giuria, 9, I-10125 Torino, Italy
| | - Fabio A. Deorsola
- Dipartimento di Scienza Applicata e Tecnologia e Unità INSTM di Torino-Politecnico, Politecnico di Torino, Corso Duca degli Abruzzi, 24, I-10129 Torino, Italy
| | - Alessando Vergara
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 4, I-80126 Napoli, Italy
| | - Antonio Aronne
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università di Napoli Federico II, P.le Tecchio, 80, I-80125 Napoli, Italy
| | - Martino Di Serio
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 4, I-80126 Napoli, Italy
- International Research Organization for Advanced Science and Technology (IROAST), University of Kumamoto, 860-8555 Kumamoto, Japan
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Lettieri S, Gargiulo V, Pallotti DK, Vitiello G, Maddalena P, Alfè M, Marotta R. Evidencing opposite charge-transfer processes at TiO2/graphene-related materials interface through a combined EPR, photoluminescence and photocatalysis assessment. Catal Today 2018. [DOI: 10.1016/j.cattod.2018.01.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Kaur J, Vergara A, Rossi M, Gravagnuolo AM, Valadan M, Corrado F, Conte M, Gesuele F, Giardina P, Altucci C. Electrostatically driven scalable synthesis of MoS2–graphene hybrid films assisted by hydrophobins. RSC Adv 2017. [DOI: 10.1039/c7ra09878b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Green synthesis of MoS2/biofunctionalized graphene hybrid films assisted by Vmh2 hydrophobin for applications in biosensing and photodetection.
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Affiliation(s)
- Jasneet Kaur
- Department of Physics “Ettore Pancini”
- University of Naples Federico II
- Naples
- Italy
- Akal College of Basic Sciences
| | - Alessandro Vergara
- Department of Chemical Sciences
- University of Naples Federico II
- Naples
- Italy
- CEINGE Biotecnologie Avanzate scarl
| | - Manuela Rossi
- Department of Earth, Environment and Resources Sciences
- University of Naples Federico II
- Naples
- Italy
| | - Alfredo Maria Gravagnuolo
- Department of Chemical Sciences
- University of Naples Federico II
- Naples
- Italy
- Division of Pharmacy and Optometry
| | | | - Federica Corrado
- Istituto Zooprofilattico Sperimentale del Mezzogiorno
- Portici
- Italy
| | | | - Felice Gesuele
- Department of Physics “Ettore Pancini”
- University of Naples Federico II
- Naples
- Italy
| | - Paola Giardina
- Department of Chemical Sciences
- University of Naples Federico II
- Naples
- Italy
| | - Carlo Altucci
- Department of Physics “Ettore Pancini”
- University of Naples Federico II
- Naples
- Italy
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15
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Di Capua R, Gargiulo V, Alfè M. Graphene-Like Layers from Unconventional Carbon Sources: New Perspectives on Hybrid Materials and π-system Synergisms. EURASIAN CHEMICO-TECHNOLOGICAL JOURNAL 2016. [DOI: 10.18321/ectj480] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
We developed a new approach for producing graphene-like (GL) materials through a two-steps oxidation/reduction method starting from a nanostructured (high surface) carbon black, a versatile carbonaceous material prone to be structurally and chemically modified in quite mild wet conditions. Atomic Force Microscopy and zetapotential measurements allowed to model the assembling mechanisms and the role of hydrophobic interactions, demonstrating the possibility to easily tune the surface morphology. GL materials have been then employed in a large variety of hybrid materials for innovative applications, and characterized by chemical, electrical, structural and spectroscopic techniques. With Metal-Organic Frameworks, GL produced conducting composites with electrical conductivity tunable by changing the concentration of the parent materials; Eumelanin/GL and TiO2-nanoparticles/GL were also studied for photocatalysis and biosensors applications.
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Gargiulo V, Alfè M, Capua RD, Togna AR, Cammisotto V, Fiorito S, Musto A, Navarra A, Parisi S, Pezzella A. Supplementing π-systems: eumelanin and graphene-like integration towards highly conductive materials for the mammalian cell culture bio-interface. J Mater Chem B 2015; 3:5070-5079. [DOI: 10.1039/c5tb00343a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Eumelanin and graphene-like integration towards a competitive exploitation in the materials science of the melanic human pigment.
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Affiliation(s)
| | - Michela Alfè
- Istituto di Ricerche sulla Combustione (IRC) – CNR
- I-80125 Naples
- Italy
| | - Roberto Di Capua
- Dipartimento di Fisica
- Università di Napoli Federico II via Cintia
- Naples
- Italy
- CNR-SPIN via Cintia
| | - Anna Rita Togna
- Department of Physiology and Pharmacology “Vittorio Erspamer”
- Sapienza University of Rome
- 00185 Rome
- Italy
| | - Vittoria Cammisotto
- Department of Physiology and Pharmacology “Vittorio Erspamer”
- Sapienza University of Rome
- 00185 Rome
- Italy
| | - Silvana Fiorito
- Department of Clinical Medicine
- Sapienza University of Rome
- 00185 Rome
- Italy
- Inst. of Translational Pharmacology
| | - Anna Musto
- Department of Molecular Medicine and Medical Biotechnology
- University of Naples “Federico II”
- Naples
- 5- 80131- Napoli
- Italy
| | - Angelica Navarra
- Department of Molecular Medicine and Medical Biotechnology
- University of Naples “Federico II”
- Naples
- 5- 80131- Napoli
- Italy
| | - Silvia Parisi
- Department of Molecular Medicine and Medical Biotechnology
- University of Naples “Federico II”
- Naples
- 5- 80131- Napoli
- Italy
| | - Alessandro Pezzella
- Department of Chemical Sciences
- University of Naples “Federico II” Via Cintia 4
- I-80126 Naples
- Italy
- Institute for Polymers, Composites and Biomaterials (IPCB)
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Gelzo M, Grimaldi M, Vergara A, Severino V, Chambery A, Dello Russo A, Piccioli C, Corso G, Arcari P. Comparison of binder compositions in Pompeian wall painting styles from Insula Occidentalis. Chem Cent J 2014; 8:65. [PMID: 25419232 PMCID: PMC4240868 DOI: 10.1186/s13065-014-0065-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Accepted: 10/30/2014] [Indexed: 11/17/2022] Open
Abstract
Background Although the pigment composition of Pompeian wall paintings has been the object of several studies, a comprehensive characterization of paint binder components is still lacking. This work aimed investigated at a molecular level the binder composition differences among wall paintings belonging to different periods of Pompeii’s history. Analytical investigations were performed on representative samples of the first, second, third, and fourth painting styles excavated from the house of Marcus Fabius Rufus (Insula Occidentalis). The application of sensitive experimental methodologies was complemented by historical knowledge to gain insight in painting techniques and materials used by Pompeian artists. Results Fourier transform infrared spectroscopy and Raman spectroscopy were used to investigate the organic components and pigments present in powders obtained from samples of the four painting styles. No proteinaceous components were detected in the samples with liquid chromatography-electrospray ionization-hybrid quadrupole/time-of-flight mass spectrometry. Liquid chromatography, gas chromatography with flame-ionization detection, and gas chromatography–mass spectrometry of polar and non-polar components extracted from powders were used to evaluate and compare the free amino acids, sugars, and fatty acids profiles. Conclusions Pigments and natural products (lipids, gums and wheat flours) were the main components of all samples. This supports the hypothesis that artists likely used water tempera for Pompeian wall paintings. Scheme of the multi-analytical approach followed to compare Pompeian paint binders composition.Scheme of the multi-analytical approach followed to compare Pompeian paint binders composition. ![]()
Electronic supplementary material The online version of this article (doi:10.1186/s13065-014-0065-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Monica Gelzo
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università di Napoli Federico II, Via Pansini 5, I-80131 Naples, Italy
| | - Mario Grimaldi
- Centro Internazionale per gli Studi Pompeiani, Università Suor Orsola Benincasa, Via Suor Orsola 10, I-80135 Naples, Italy
| | - Alessandro Vergara
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia 21, I-80126 Naples, Italy ; Distretto ad Alta Tecnologia dei Beni Culturali (DATABENC) Scarl, Naples, Italy
| | - Valeria Severino
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Seconda Università di Napoli, Via Vivaldi 43, I-81100 Caserta, Italy
| | - Angela Chambery
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Seconda Università di Napoli, Via Vivaldi 43, I-81100 Caserta, Italy
| | - Antonio Dello Russo
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università di Napoli Federico II, Via Pansini 5, I-80131 Naples, Italy
| | | | - Gaetano Corso
- Dipartimento di Medicina Clinica e Sperimentale, Università di Foggia, Via Pinto 1, I-71122 Foggia, Italy
| | - Paolo Arcari
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università di Napoli Federico II, Via Pansini 5, I-80131 Naples, Italy ; CEINGE, Biotecnologie Avanzate Scarl, Via Comunale Margherita, 482 I-80145 Naples, Italy
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Zabiegaj D, Santini E, Guzmán E, Ferrari M, Liggieri L, Buscaglia V, Buscaglia MT, Battilana G, Ravera F. Nanoparticle laden interfacial layers and application to foams and solid foams. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.02.046] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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