Antifungal Graphene‐based Absorbers as Advanced Materials for Preventive Conservation of Cultural Objects

Gorgolis, George; Messina, Elena; Kotsidi, Maria; Staccioli, Maria Paola; Nhuch, Elsa Lesaria; Carlo, Gabriella Di; Schrekker, Henri Stefan S.; Paterakis, George; Koutroumanis, Nikos; Galiotis, Costas

doi:10.1002/cnma.202200265

Cited by 5 publications

(5 citation statements)

References 20 publications

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“…[198,199] In the action of the polyvinyl alcohol/GO film, the interaction mechanism appears to mainly involve surface complexation, 𝜋-𝜋 stacking, and electrostatic interactions. [30] Most importantly, the authors report that the adsorption mechanism is reversible, possibly allowing to reuse of the PLA/GO film after it has reached its maximum capacity. The performance of this nanocomposite has been reported to be comparable or superior to the one based on rGO combined with ionic liquids [200] or hexagonal boron nitride [201] in terms of VOCs adsorption.…”

Section: Indoor Environmental Controlmentioning

confidence: 99%

“…GO can interact and, consequently trap these molecules thanks to its oxygencontaining functional groups, which make it affine to polar species. [30] Parallelly, protection from nonpolar VOCs might also be achieved by leveraging the hydrophobicity of graphene. [198,199] In the action of the polyvinyl alcohol/GO film, the interaction mechanism appears to mainly involve surface complexation, 𝜋-𝜋 stacking, and electrostatic interactions.…”

Section: Indoor Environmental Controlmentioning

confidence: 99%

“…[202] In a recent report, the potential of rGO-based aerogels containing an ionic liquid has been studied as a preventive conservation strategy against VOCs and fungi (i.e., Aspergillus niger) colonization. [200] Both the adsorption and the desorption of VOCs have been investigated, proving a more stable aerogel-aldehydes interaction and a quicker desorption for the organic acids. This suggests that both chemisorption and physisorption occur simultaneously.…”

Section: Indoor Environmental Controlmentioning

confidence: 99%

“…[ 30 ] Most importantly, the authors report that the adsorption mechanism is reversible, possibly allowing to reuse of the PLA/GO film after it has reached its maximum capacity. The performance of this nanocomposite has been reported to be comparable or superior to the one based on rGO combined with ionic liquids [ 200 ] or hexagonal boron nitride [ 201 ] in terms of VOCs adsorption. The improvement is probably associated both with the different polarity of GO compared to rGO and with the different structure of film and aerogel.…”

Section: Applications In Cultural Heritagementioning

confidence: 99%

“…[18][19][20][21][22][23] Within this realm, graphene and graphene-related materials (GRMs) have shown promise in addressing a range of issues (Figure 1A), including corrosion, UVaging, and reversibility. [24][25][26][27][28][29][30][31] These issues are sometimes not fully addressed by current strategies, [32][33][34][35] or by conventional treatments. [36][37][38][39][40][41] Over the last 19 years, extensive research on graphene and GRMs [42][43][44][45][46][47][48] has paved the way for their application in a wide range of fields, such as (opto)electronics, sensing, biomedicine, and energy storage.…”

Section: Introductionmentioning

confidence: 99%

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Present Status and Perspectives of Graphene and Graphene‐related Materials in Cultural Heritage

Galvagno,

Tartaglia,

Stratigaki

et al. 2024

Adv Funct Materials

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Cultural heritage faces recurring degradation processes and natural aging phenomena, demanding the envisioning of innovative preservation solutions inspired by cutting‐edge scientific research. Over extended time frames, current preservation strategies often prove inadequate in preserving the different constituent materials of cultural assets, which are thus threatened by their inherent fragility and by the complex interactions with the surrounding environment. The distinctive properties of graphene and graphene‐related materials (GRMs) now offer unexplored opportunities in the field of cultural heritage, addressing various forms of deterioration phenomena. This work critically analyzes early‐stage literature on the use of graphene and GRMs. Strengths, weaknesses, and limitations in anti‐corrosion, anti‐fading, and consolidation properties of graphene and GRMs are thoroughly investigated, along with their possible applications in smart sensors to monitor the state of health of endangered artifacts. The aim is to elucidate how specific characteristics of graphene and GRMs can be applied to the conservation, diagnostics, and monitoring of artistic and archaeological assets. Future perspectives in the design of stable, long‐lasting, and compatible graphene‐based solutions for cultural heritage protection are highlighted, providing a detailed discussion on potentials and pitfalls.

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Section: Indoor Environmental Controlmentioning

confidence: 99%

Section: Indoor Environmental Controlmentioning

confidence: 99%

Section: Indoor Environmental Controlmentioning

confidence: 99%

Section: Applications In Cultural Heritagementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Present Status and Perspectives of Graphene and Graphene‐related Materials in Cultural Heritage

Galvagno,

Tartaglia,

Stratigaki

et al. 2024

Adv Funct Materials

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Advanced methodologies for the cleaning of works of art

Casini

Chelazzi

Baglioni

2023

Sci. China Technol. Sci.

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Cultural heritage assets constitute a fundamental socioeconomic resource, but the actual works of art need to be maintained, counteracting degradation processes, to transfer these benefits to future generations. In particular, the removal of soil, aged coatings, and vandalism/overpaints is one of the most needed interventions in art restoration. Traditional cleaning methodologies, based on classical solution and polymer chemistry, only grant limited control of the cleaning interventions, with the risk of affecting the original components of the artifacts, and often involving the use of toxic or non-environmentally friendly compounds. Alternatively, materials science, colloids, and soft matter have provided valuable and safe solutions in the last decades. This review provides a selection of the most recent and advanced methodologies for the wet cleaning of works of art, spanning from nanostructured cleaning fluids (microemulsions, surfactants swollen micelles) to physical and chemical gels. The new methodologies work on different physico-chemical mechanisms, such as processes for detaching/dewetting, to selectively remove the unwanted layers in sustainable and cost-effective interventions. The best performing systems, like microemulsions confined in “twin-chain” polyvinyl alcohol gels, have been assessed in the cleaning of masterpieces such as works by Pablo Picasso, Jackson Pollock and Roy Lichtenstein. Particular attention is dedicated to “green” chemistry systems, using low-toxicity solvents or bio-based/waste materials to build gel networks. Finally, current trends and future perspectives are given, showing that advanced systems for art cleaning link with transversal fields of crucial importance even beyond Cultural heritage conservation, e.g., detergency, tissue engineering, drug-delivery, food industry and cosmetics.

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Graphene aerogels as efficient adsorbers of water pollutants and their effect of drying methods

Gorgolis,

Kotsidi,

Paterakis

et al. 2024

Sci Rep

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Environmental accidents highlight the need for the development of efficient materials that can be employed to eliminate pollutants including crude oil and its derivatives, as well as toxic organic solvents. In recent years, a wide variety of advanced materials has been investigated to assist in the purification process of environmentally compromised regions, with the principal contestants being graphene-based structures. This study describes the synthesis of graphene aerogels with two methods and determines their efficiency as adsorbents of several water pollutants. The main difference between the two synthesis routes is the use of freeze-drying in the first case, and ambient pressure drying in the latter. Raman spectroscopy, Scanning Electron Microscopy (SEM), X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS) and contact angle measurements are employed here for the characterisation of the samples. The as-prepared aerogels have been found to act as photocatalysts of aqueous dye solutions like methylene blue and Orange G, while they were also evaluated as adsorbents of organic solvents (acetone, ethanol and methanol), and, oils like pump oil, castor oil, silicone oil, as well. The results presented here show that the freeze-drying approach provides materials with better adsorption efficiency for the most of the examined pollutants, however, the energy and cost-saving advantages of ambient-pressure-drying could offset the adsorption advantages of the former case.

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Antifungal Graphene‐based Absorbers as Advanced Materials for Preventive Conservation of Cultural Objects

Cited by 5 publications

References 20 publications

Present Status and Perspectives of Graphene and Graphene‐related Materials in Cultural Heritage

Present Status and Perspectives of Graphene and Graphene‐related Materials in Cultural Heritage

Advanced methodologies for the cleaning of works of art

Graphene aerogels as efficient adsorbers of water pollutants and their effect of drying methods

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