Assessment of nanoparticles/nanocomposites to inhibit micro-algal fouling on limestone façades

Becerra, Javier; Ortiz, Pilar; Zaderenko, Ana Paula; Karapanagiotis, Ioannis

doi:10.1080/09613218.2019.1609233

Cited by 27 publications

(24 citation statements)

References 62 publications

(88 reference statements)

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“…Despite their toxicity, traditional biocides are still largely employed to contrast biodeterioration [ 15 , 16 ]. However, biocidal treatments have a brief duration and must often be repeated frequently, creating a repeated threat to the heritage material and the environment [ 17 ]. In addition, repeated biocidal treatments can cause resistance in target biological agents, and they can modify biofilm structures favoring the growth of more harmful biodeteriogens [ 12 , 18 ].…”

Section: Chemical Methodsmentioning

confidence: 99%

“…Nanoparticles (NPs) display unique physicochemical properties including an ultra-small size, large surface-to-mass ratio, and a peculiar reactivity with organisms, and they are appealing to use both for organic and inorganic materials. Some NPs composed of silver (Ag), copper (Cu), titanium dioxide (TiO 2 ), or zinc oxide (ZnO) display interesting biocidal features [ 17 ]. Nanocomposites are materials made by different NPs.…”

Section: Chemical Methodsmentioning

confidence: 99%

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The Control of Cultural Heritage Microbial Deterioration

2020

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The microbial deterioration of cultural heritage includes physical and chemical damage as well as aesthetic alteration. With the technological advancement, a plethora of techniques for removing unwanted microorganisms have opened up new opportunities for microbiologists and conservators. This article reviews the most applied, up-to-date, and sustainable techniques developed for the control of cultural heritage microbial deterioration presenting noteworthy case studies. These techniques include chemical methods, i.e., traditional biocides and nanoparticles; physical methods, such as mechanical removal, UV irradiation, gamma radiation, laser cleaning, heat shocking, microwaves, and dry ice treatment; and biological methods, such as natural molecules with biocidal activity, enzymes, and microorganisms. The application of control systems requires the comprehension of their behavior toward the unwanted microorganisms and possible interactions with the heritage materials. This overview shows also the control methods drawbacks for the purpose of creating awareness in selecting the most suitable technique or combination of techniques.

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Section: Chemical Methodsmentioning

confidence: 99%

Section: Chemical Methodsmentioning

confidence: 99%

The Control of Cultural Heritage Microbial Deterioration

2020

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“…While this bacteria domain represents a relevant pioneering colonizer of outdoor heritage objects, very few studies were carried out with this microorganism. Just six papers of the consulted bibliography studied the effect of Ag NPs 13,61,81 and TiO 2 NPs 14,21,82 on cyanobacteria. Chlorella vulgaris is the most utilized algae from a list of more than ten different algal species.…”

Section: Types Of Microorganisms Used To Evaluate the Potential Of Antimicrobial Nanomaterialsmentioning

confidence: 99%

“…26,56 NP size distribution in solution has been frequently analyzed by dynamic light scattering. 61,81 The reliability of this technique, however, is limited to particles with spherical shape. This technique is affected by aggregation and, therefore, can be used to study the stability of the NP dispersion prior application.…”

Section: Nanomaterials and Nanomaterial-heritage Substrate Characterization Techniquesmentioning

confidence: 99%

Perspectives for antimicrobial nanomaterials in cultural heritage conservation

Franco‐Castillo

Hierro

Fuente

et al. 2021

Chem

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The biodeterioration of artistic and architectural heritage represents a serious and recurring problem for museums, local authorities, and private collectors alike, where irreparable damage to unique artifacts can result in immeasurable losses to our shared cultural heritage. Here, we present an overview of the current trends in antimicrobial products used to protect heritage items from microbial colonization and prevent their deterioration. From a conservation-restoration standpoint, we contrast and compare traditional antimicrobial products with the state of the art in antimicrobial nanomaterials applied in the heritage conservation field, highlighting the promising potential of various different nanomaterials, as well as points of concern and clear red flags from some of the emerging research. Through an examination of the growing body of research in the academic literature we offer recommendations and practical advice on selecting appropriate microbiological assays and characterization techniques to better evaluate the in vitro and in situ antimicrobial properties of nanomaterials.

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“…A mass loss is the other disadvantage that goes along with this technique. It is also possible to use biocidal or fungicidal additives [18,19] in plasters composition or apply protective coatings [20]. Unfortunately, these measures might always not conform to the cultural heritage conservation principles that mostly make a point of maintaining the original compositions, formulas, or procedures.…”

Section: Introductionmentioning

confidence: 99%

Computational Prediction of Susceptibility to Biofilms Growth: Two-Dimensional Analysis of Critical Construction Details

Kočí

Maděra

et al. 2020

Energies

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Retrofitting of historical and traditional buildings is an effective thermal protection measure. The presence of thermal insulation in the composition of building envelopes might, however, bring some shortages due to a decrease of exterior surface temperatures or possible water vapor condensation. These shortages can improve living conditions for various microorganisms on the exterior surfaces, especially in the case of interior thermal insulation systems that are typical with thermal bridges and thus supply the surface with heat to a greater extent. This paper, therefore, aims at the investigation of hygrothermal conditions in selected critical construction details and evaluates the results from the point of view of potential biofilms growth. Two-dimensional modeling of coupled heat and moisture is applied and the hygrothermal patterns are evaluated based on an adjusted isopleth growth model. The results showed that the duration of favorable conditions for biofilms growth is relatively low, accounting for less than 180 h in the worst-case scenario. It means the exterior surfaces of historical buildings provided with interior thermal insulation systems are not threatened by biofilms growth. Anyway, other negative aspects have been revealed that should be treated individually. Possible wood decay or increased hygrothermal straining are the typical examples in that respect.

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Assessment of nanoparticles/nanocomposites to inhibit micro-algal fouling on limestone façades

Cited by 27 publications

References 62 publications

The Control of Cultural Heritage Microbial Deterioration

The Control of Cultural Heritage Microbial Deterioration

Perspectives for antimicrobial nanomaterials in cultural heritage conservation

Computational Prediction of Susceptibility to Biofilms Growth: Two-Dimensional Analysis of Critical Construction Details

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