Application of Microbial Cleaning Technology for Removal of Surface Contamination

Kohli, Rajiv

doi:10.1016/b978-0-12-815577-6.00015-3

Cited by 8 publications

(7 citation statements)

References 45 publications

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“…BCB are usually used for stone consolidation and reinforcement [40], whereas SRB and NRB bacteria Biorestoration technologies are currently considered effective alternatives to traditional restoration methods, as reported in several studies . Biological approaches can be regarded as sustainable alternatives based on several aspects: (i) exploitation of natural "virtuous" microbial processes, as bacterial activity leads to natural release of carbon dioxide and water, so their employment can be considered environmentally friendly [36][37][38]; (ii) selection of non-pathogenic microorganisms, safe to use and without recognized hazard potential [35]; (iii) environmental safety: absence of hazardous wastes and emission, compared to chemicals methods [39]; (iv) soft intervention on artworks [35]; (v) lower or comparable cost compared to conventional methods [36].…”

Section: Bioremediation and Bioconsolidationmentioning

confidence: 99%

The Potential Use of Microorganisms as Restorative Agents: An Update

et al. 2019

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The biodeterioration process involves every type of Cultural Heritage item, including monuments, stoneworks, frescoes, and easel paintings. The accurate study of the microbial and fungal communities dwelling on artworks, and involved in their deterioration, is essential for the adoption of optimal prevention and conservation strategies. Conventional restorative methods, that usually involve chemical and physical technologies, present some disadvantages, including short-term and unsatisfactory effects, potential damage to the treated works, human toxicity, and environmental hazards. Research in the field of restoration has paved the way for innovative biological approaches, or ‘biorestoration’, in which microorganisms are not only considered as an eventual danger for artworks, but rather as potential tools for restoration. The present review describes the main aspects of the biodeterioration process and highlights the most relevant biorestoration approaches: bioconsolidation, biocleaning, biological control, and new promising bio-decontaminating compounds.

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Section: Bioremediation and Bioconsolidationmentioning

confidence: 99%

The Potential Use of Microorganisms as Restorative Agents: An Update

et al. 2019

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“…Nevertheless, the concentration of carbon is acceptable within the range of the typical amount of adventitious carbon contamination (40−60%). 33 The nitrogen levels were very low in the sample, which means that the accuracy of the deconvolution will be very low. Interestingly, the concentration of copper detected is relatively low (0.59%), indicating that the FeNi alloy was homogeneous.…”

Section: Xps Xps Is a Highly Sensitive Technique That Provides Inform...mentioning

confidence: 99%

Nucleation and Diffusion-Controlled Growth of FeNi Permalloy Nanoparticles in a Deep Eutectic Solvent Based on Choline Chloride: Kinetic Behavior and Magnetic Property

Le Manh,

Benitez Perez,

Martinez-Ortiz

et al. 2024

J. Phys. Chem. C

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This work presents the electrochemical nucleation and characterization of FeNi permalloy nanoparticles from a deep eutectic solvent based on choline chloride. FeNi nanoparticles were obtained by a single-potentiostatic-step from the mixture of Fe(III) and Ni(II) ions dissolved in the deep eutectic solvent. The experimental evidence for the formation of the alloy nanoparticles was verified by scanning electron microscopy, energy-dispersive Xray spectroscopy (element mapping), and X-ray photoelectron spectroscopy. These permalloy nanoparticles have shown outstanding magnetic properties, which are better than those of their individual components (Fe and Ni) obtained in the same eutectic solvent. The enhancement in magnetic properties of the obtained alloy was explained by theoretical studies using molecular dynamic simulations and hysteresis modeling. The origin of this enhancement is due to the presence of the magnetocrystalline anisotropy energy, which shows the minimum value along the ([001]) magnetic easy direction in the permalloy.

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“…In the final step, the tip was subjected to a dry UV−ozone treatment (see Methods) to test the effect of a simple method to remove organic contaminants from noncarbon-based probes (e.g., metal-coated or silicon tips) . 41 The HIM image of the tip after UV−ozone treatment is shown in Figure 6f.…”

Section: Hs-afm Of Nucleoproteinsmentioning

confidence: 99%

Focused Helium Ion and Electron Beam-Induced Deposition of Organometallic Tips for Dynamic Atomic Force Microscopy of Biomolecules in Liquid

Allen,

De Teresa,

Onoa

2024

ACS Appl. Mater. Interfaces

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We demonstrate the fabrication of sharp nanopillars of high aspect ratio onto specialized atomic force microscopy (AFM) microcantilevers and their use for high-speed AFM of DNA and nucleoproteins in liquid. The fabrication technique uses localized charged-particleinduced deposition with either a focused beam of helium ions or electrons in a helium ion microscope (HIM) or scanning electron microscope (SEM). This approach enables customized growth onto delicate substrates with nanometer-scale placement precision and in situ imaging of the final tip structures using the HIM or SEM. Tip radii of <10 nm are obtained and the underlying microcantilever remains intact. Instead of the more commonly used organic precursors employed for bio-AFM applications, we use an organometallic precursor (tungsten hexacarbonyl) resulting in tungsten-containing tips. Transmission electron microscopy reveals a thin layer of carbon on the tips. The interaction of the new tips with biological specimens is therefore likely very similar to that of standard carbonaceous tips, with the added benefit of robustness. A further advantage of the organometallic tips is that compared to carbonaceous tips they better withstand UV−ozone cleaning treatments to remove residual organic contaminants between experiments, which are inevitable during the scanning of soft biomolecules in liquid. Our tips can also be grown onto the blunted tips of previously used cantilevers, thus providing a means to recycle specialized cantilevers and restore their performance to the original manufacturer specifications. Finally, a focused helium ion beam milling technique to reduce the tip radii and thus further improve lateral spatial resolution in the AFM scans is demonstrated.

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Application of Microbial Cleaning Technology for Removal of Surface Contamination

Cited by 8 publications

References 45 publications

The Potential Use of Microorganisms as Restorative Agents: An Update

The Potential Use of Microorganisms as Restorative Agents: An Update

Nucleation and Diffusion-Controlled Growth of FeNi Permalloy Nanoparticles in a Deep Eutectic Solvent Based on Choline Chloride: Kinetic Behavior and Magnetic Property

Focused Helium Ion and Electron Beam-Induced Deposition of Organometallic Tips for Dynamic Atomic Force Microscopy of Biomolecules in Liquid

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